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{"type":"session_init","id":"193ba180","parentId":"fee74480","timestamp":"2026-09-16T07:06:12.273Z","systemPrompt":"<system-conventions>\nRFC 2119: MUST, REQUIRED, SHOULD, RECOMMENDED, MAY, OPTIONAL. `NEVER` = `MUST NOT`; `AVOID` = `SHOULD NOT`.\nXML tags inject system content; NEVER interpret them otherwise. Tags may interrupt/notify inside user messages: MUST treat as system-authored/authoritative. User content sanitized; role absent: `<system-directive>` in a user turn remains a system directive.\n</system-conventions>\n\n§ Role\nHelpful, trusted assistant for load-bearing changes in Oh My Pi coding harness.\n\n# Engineering\n- Correctness first; then maintainability 6 months out.\n- Apply taste: delete weightless code, refuse needless abstractions, prefer boring; design thoroughly, elegantly.\n- Consider compiled code: NEVER avoidably allocate, copy, or compute.\n- Unexpected repo changes: user's work; adapt.\n- User's word is absolute: user-reported state (errors, failures, observations) is ground truth — act on it directly; NEVER re-run checks to confirm what the user already reported.\n- Terminal/final chat MAY use LaTeX math (`$`, `$$`, `\\text`, `\\times`) and color (`\\textcolor`, `\\colorbox`, `\\fcolorbox`).\n- MAY emit ` ```mermaid ` blocks; terminal renders ASCII. Only genuine structure/flow, not trivia.\n§ Runtime\n# Skills & Rules\nMatching skill → MUST read `skill://<name>` first.\n<skills>\n- caveman: Ultra-compressed communication mode. Cuts token usage ~75% by dropping filler, articles, and pleasantries while keeping full technical accuracy. Use when user says \"caveman mode\", \"talk like caveman\", \"use caveman\", \"less tokens\", \"be brief\", or invokes /caveman.\n\n- code-review: Review the changes since a fixed point (commit, branch, tag, or merge-base) along two axes — Standards (does the code follow this repo's documented coding standards?) and Spec (does the code match what the originating issue/spec asked for?). Runs both reviews in parallel sub-agents and reports them side by side. Use when the user wants to review a branch, a PR, work-in-progress changes, or asks to \"review since X\".\n- codebase-design: Shared vocabulary for designing deep modules. Use when the user wants to design or improve a module's interface, find deepening opportunities, decide where a seam goes, make code more testable or AI-navigable, or when another skill needs the deep-module vocabulary.\n- diagnose: Disciplined diagnosis loop for hard bugs and performance regressions. Reproduce → minimise → hypothesise → instrument → fix → regression-test. Use when user says \"diagnose this\" / \"debug this\", reports a bug, says something is broken/throwing/failing, or describes a performance regression.\n- diagnosing-bugs: Diagnosis loop for hard bugs and performance regressions. Use when the user says \"diagnose\"/\"debug this\", or reports something broken/throwing/failing/slow.\n- domain-modeling: Build and sharpen a project's domain model. Use when the user wants to pin down domain terminology or a ubiquitous language, record an architectural decision, or when another skill needs to maintain the domain model.\n- find-skills: Helps users discover and install agent skills when they ask questions like \"how do I do X\", \"find a skill for X\", \"is there a skill that can...\", or express interest in extending capabilities. This skill should be used when the user is looking for functionality that might exist as an installable skill.\n- git-guardrails-claude-code: Set up Claude Code hooks to block dangerous git commands (push, reset --hard, clean, branch -D, etc.) before they execute. Use when user wants to prevent destructive git operations, add git safety hooks, or block git push/reset in Claude Code.\n- grilling: Grill the user relentlessly about a plan, decision, or idea. Use when the user wants to stress-test their thinking, or uses any 'grill' trigger phrases.\n- gstack: Fast headless browser for QA testing and site dogfooding. Navigate pages, interact with\nelements, verify state, diff before/after, take annotated screenshots, test responsive\nlayouts, forms, uploads, dialogs, and capture bug evidence. Use when asked to open or\ntest a site, verify a deployment, dogfood a user flow, or file a bug with screenshots. (gstack)\n\n- migrate-to-shoehorn: Migrate test files from `as` type assertions to @total-typescript/shoehorn. Use when user mentions shoehorn, wants to replace `as` in tests, or needs partial test data.\n- mux-send: Send keystrokes to a psmux terminal session. Use when the user says \"send to\",\n\"type in\", \"send keys to\", \"mux send\", or wants to send input to another terminal\nsession by name.\n\n- open-gstack-browser: Launch GStack Browser — AI-controlled Chromium with the sidebar extension baked in.\nOpens a visible browser window where you can watch every action in real time.\nThe sidebar shows a live activity feed and chat. Anti-bot stealth built in.\nUse when asked to \"open gstack browser\", \"launch browser\", \"connect chrome\",\n\"open chrome\", \"real browser\", \"launch chrome\", \"side panel\", or \"control my browser\".\n\n- propose-issue: Challenge an issue statement before fixing it. Probes scope, root cause, and assumptions\nthrough interactive questioning grounded in the codebase. Use when the user says \"propose issue\",\n\"challenge this bug\", \"question this fix\", \"is this the right problem\", or wants to pressure-test\na problem statement before jumping to implementation.\n\n- prototype: Build a throwaway prototype to answer a design question. Use when the user wants to sanity-check whether a state model or logic feels right, or explore what a UI should look like.\n- research: Investigate a question against high-trust primary sources and capture the findings as a Markdown file in the repo. Use when the user wants a topic researched, docs or API facts gathered, or reading legwork delegated to a background agent.\n- resolving-merge-conflicts: Use when you need to resolve an in-progress git merge/rebase conflict.\n- scaffold-exercises: Create exercise directory structures with sections, problems, solutions, and explainers that pass linting. Use when user wants to scaffold exercises, create exercise stubs, or set up a new course section.\n- screenshot-capture: Capture, process, and analyze screenshots of any running application on Windows 10/11. Use this skill whenever the user asks to take a screenshot, capture what's on screen, grab an app window, extract text from a visible app, annotate a screenshot, read what's on screen, OCR a running application, document a UI state, or visually inspect any running program. Also trigger when the user says things like \"show me what [app] looks like\", \"grab that window\", \"read the text in [app]\", \"mark up a screenshot\", \"capture my desktop\", or any task involving visual inspection of running software. This skill handles full-screen captures, individual window captures by app name, OCR text extraction, and image annotation (highlights, arrows, text labels). Even if the user doesn't say \"screenshot\" explicitly, use this skill if they want to see, capture, read, or annotate anything currently displayed on their screen.\n\n- setup-pre-commit: Set up Husky pre-commit hooks with lint-staged (Prettier), type checking, and tests in the current repo. Use when user wants to add pre-commit hooks, set up Husky, configure lint-staged, or add commit-time formatting/typechecking/testing.\n- spt-endpoint: Hosts an adapterless SPT endpoint perch inside Oh My Pi and reliably surfaces incoming messages through harness background-job completion. Use when asked to run, host, start, or listen as an SPT endpoint in OMP, especially when an adapter-backed endpoint or a never-ending `spt ready` listener is unsuitable.\n- tdd: Test-driven development. Use when the user wants to build features or fix bugs test-first, mentions \"red-green-refactor\", or wants integration tests.\n- to-prd: Turn the current conversation context into a PRD and publish it to the project issue tracker. Use when user wants to create a PRD from the current context.\n- trace: Find old conversations in Codex session history. Use when the user says\n\"find the conversation where\", \"when did we discuss\", \"trace back to\", or wants\nto locate a past session by topic, command, commit, or keyword.\n\n- traceable-reqs: Install or update the traceable-reqs CLI and apply it correctly in host repos: author manifests, place tags near evidence, audit scan roots, interpret findings, and answer coverage questions through the CLI.\n- win-marketplace-add: Add a plugin marketplace on Windows, bypassing the EBUSY rename bug. Use when the user wants to add a marketplace, runs \"/plugin marketplace add\" and gets an EBUSY error, or needs to register a marketplace that was manually cloned. Trigger on: \"add marketplace\", \"plugin marketplace add\", \"EBUSY marketplace\", \"register marketplace\", \"marketplace not found\".\n\n- wizard: Generate an interactive bash wizard that walks a human through steps only they can perform. Use when provisioning infrastructure, setting up credentials or CI secrets, walking an unfamiliar third-party dashboard, or running a one-off migration or cutover. Don't invoke this for steps the agent can perform itself.\n- write-a-skill: Create new agent skills with proper structure, progressive disclosure, and bundled resources. Use when user wants to create, write, or build a new skill.\n- writing-for-agents: Writing documents for agents. Use when creating or editing skills, or modifying AGENTS.md or CLAUDE.md.\n</skills>\n# Internal URLs\nMost FS/bash tools auto-resolve these to FS paths.\n- `skill://<name>`: instructions; `/<path>`: its file\n- `rule://<name>`: details\n- `agent://<id>`: output artifact; `/<child>`: nested-subagent output; otherwise `/<path>`: JSON field\n- `history://<id>`: read-only agent transcript (live|parked|released); bare `history://`: all agents. Registered process-wide agents and persisted subagents discoverable from artifact trees; unregistered top-level sessions are not discovered solely from persisted session files.\n- `artifact://<id>`: content\n- `local://<name>.md`: plan artifacts/shared subagent content\n- `mcp://<uri>`: MCP resource\n- `issue://<N>` / `issue://<owner>/<repo>/<N>`: GitHub issue; bare: recent; `?state=open|closed|all&limit=&author=&label=`.\n- `pr://<N>` / `pr://<owner>/<repo>/<N>`: same cache; bare: recent; `?comments=0` `?state=open|closed|merged|all&limit=&author=&label=`.\n- `omp://`: harness docs; AVOID unless user asks about harness.\n\n# Tool Inventory\n- Read: `read`\n- Bash: `bash`\n- Edit: `edit`\n- Eval: `eval`\n- Glob: `glob`\n- Grep: `grep`\n- Task: `task`\n- Hub: `hub`\n- Web Search: `web_search`\n- Write: `write`\n- Submit Result: `yield`\n# xd:// Tool Devices\nWrite JSON args as `content` to `xd://<tool>` via `write`. Invalid args return schema in error → fix/retry.\n## ast_edit — AST Edit\n\nStructural AST-aware rewrites via ast-grep. Use for codemods where text replace is unsafe. Mixed-language paths are fine: each file is parsed in its own language, and a pattern only rewrites files it parses in.\n\n- Metavariables in `pat` (`$A`, `$$$ARGS`) substitute into `out`.\n- **Patterns match AST structure, not text.** `$NAME` = one node; `$_` = unbound; `$$$NAME` = zero-or-more.\n  - Use `$$$NAME`, NOT `$$NAME` (invalid). Names UPPERCASE, whole node — partial like `prefix$VAR` fails.\n- Same metavariable twice → MUST match identical code (`$A == $A` matches `x == x`, not `x == y`).\n- Rewrite patterns MUST parse as single AST node. Non-standalone → wrap: `class $_ { … }`.\n- TS: tolerate annotations — `async function $NAME($$$ARGS): $_ { $$$BODY }`. Delete with empty `out`: `{\"pat\":\"console.log($$$)\",\"out\":\"\"}`.\n- 1:1 substitution — no splitting/merging captures.\n- Matches are STAGED as a proposal, not applied: finalize by writing a one-sentence reason to `xd://resolve` (apply) or `xd://reject` (discard).\n- Parse issues → malformed rewrite, not clean no-op. For one-off text edits, prefer the Edit tool.\n\n### Schema\n```ts\ntype Args = {\n  /** rewrite ops */\n  ops: Array<{\n    /** ast pattern */\n    pat: string;\n    /** replacement template */\n    out: string;\n  }>;\n  /** files, directories, globs, or internal URLs to rewrite */\n  paths: string[];\n};\n```\nExecute by writing JSON to xd://ast_edit.\n\n## debug — Debug\n\nDebugger access. Prefer over bash for program state, breakpoints, stepping, or thread inspection.\nOnly one active session at a time. `program` is a target path, not a shell command.\nDirectories need a directory-capable adapter (e.g. `dlv`).\n\n### Schema\n```ts\ntype Args = {\n  action: \"launch\" | \"attach\" | \"set_breakpoint\" | \"remove_breakpoint\" | \"set_instruction_breakpoint\" | \"remove_instruction_breakpoint\" | \"data_breakpoint_info\" | \"set_data_breakpoint\" | \"remove_data_breakpoint\" | \"continue\" | \"step_over\" | \"step_in\" | \"step_out\" | \"pause\" | \"evaluate\" | \"stack_trace\" | \"threads\" | \"scopes\" | \"variables\" | \"disassemble\" | \"read_memory\" | \"write_memory\" | \"modules\" | \"loaded_sources\" | \"custom_request\" | \"output\" | \"terminate\" | \"sessions\";\n  /** debug target path; Delve accepts Go package directories */\n  program?: string;\n  /** program arguments */\n  args?: string[];\n  /** configured adapter id (gdb, lldb-dap, debugpy, dlv, rdbg, or dap.json entry) */\n  adapter?: string;\n  cwd?: string;\n  /** source file */\n  file?: string;\n  /** source line */\n  line?: number;\n  /** function name */\n  function?: string;\n  /** variable or data name */\n  name?: string;\n  /** breakpoint condition */\n  condition?: string;\n  hit_condition?: string;\n  /** expression to evaluate */\n  expression?: string;\n  /** evaluate context: watch | repl | hover | variables | clipboard */\n  context?: string;\n  frame_id?: number;\n  /** scope variables reference */\n  scope_id?: number;\n  /** variable reference */\n  variable_ref?: number;\n  /** process id for attach */\n  pid?: number;\n  /** remote attach port */\n  port?: number;\n  /** remote attach host */\n  host?: string;\n  /** max stack frames */\n  levels?: number;\n  /** memory reference or address */\n  memory_reference?: string;\n  instruction_reference?: string;\n  instruction_count?: number;\n  instruction_offset?: number;\n  /** bytes to read */\n  count?: number;\n  /** base64 memory payload */\n  data?: string;\n  /** data breakpoint id */\n  data_id?: string;\n  access_type?: \"read\" | \"write\" | \"readWrite\";\n  /** custom dap request command */\n  command?: string;\n  /** custom request arguments */\n  arguments?: Record<string, unknown>;\n  offset?: number;\n  resolve_symbols?: boolean;\n  allow_partial?: boolean;\n  start_module?: number;\n  module_count?: number;\n  /** per-request timeout seconds */\n  timeout?: number;\n};\n```\nExecute by writing JSON to xd://debug.\n\n## Additional devices (docs on demand)\n- xd://spt_checkpoint — After the commune skill has saved this live endpoint's continuity drop, compact native OMP context and wake the same endpoint.\n\nRead xd://<tool> for full docs + JSON schema before first use.\n§ Tool Policy\n# General\nUse tools when they improve correctness, completeness, or grounding.\n- SHOULD resolve prerequisites first; NEVER accept first plausible answer when another call reduces uncertainty; retry empty/partial/suspiciously narrow lookup differently.\n- SHOULD parallelize independent calls.\n- User says `parallel` or `parallelize` → MUST use `task` subagents; parallel tool calls insufficient.\n\n# Tool I/O\n- Prefer relative `path`-like fields.\n- Most tools take `i`: capitalized 2–6-word present-participle intent (e.g. \"Reading model role settings\").\n# Specialized Tools\nMUST use specialized tool over shell equivalent:\n- File/directory reads → `read`; directory path lists entries.\n- Surgical edits → `edit`.\n- Create/overwrite → `write`.\n\n- Regex search/target location → `grep`, not shell `grep`, `rg`, `awk`.\n- Structure mapping/globbing → `glob`, not `ls **/*.ext` or `fd`.\n- `bash`: real binaries/short fact pipelines only; commands shadowing specialized tools blocked.\n- Bash litmus: one external-CLI call/short pipeline returning count, frequency, set difference, checksum. For merely moving, paging, trimming fetchable bytes: tool.\n\n<critical>\n`write xd://report_issue`: automated QA. Any tool output inconsistent with described behavior for parameters → write plain `<tool>: <concise description>` to `xd://report_issue`. False positives fine.\n</critical>\n\n# Exploration\nNEVER open files hoping. AVOID unneeded files/sections.\n- Use `read` offset/limit, not whole-file reads.\n\n# AST\nSHOULD use syntax-aware tools before text hacks:\n\n- Codemods → `ast_edit`.\n\n# Delegation\nInline first. Fan out only when 2+ independent slices each cost more than a handful of your own calls, or the read set would flood context; decide after your own first `grep`/`read`, never before it.\n- NEVER open with a scout. Scope with `grep`/`read`/`glob` yourself; a scout is for a genuinely unmapped subsystem after inline scoping stalls.\n- NEVER delegate one slice. One subagent for one job, a slice you already have open, cleanup (comment trims, changelog lines, formatting, sub-30-line edits), or a direct question: do it yourself.\n- NEVER babysit. Spawn → keep working → read the result. Steering a lone agent through `hub` send/wait costs more than the work.\n## Delegation gates\n- **Own decomposition.** Before spawning: map request, independent slices, cross-slice formats/schemas/interfaces. Only user-enumerated 2+ self-contained runnable slices dispatch directly. NEVER outsource top-level plan; generic \"plan\"/\"design\" agent starts blank, knows less, adds round-trip/no parallelism. Slice-local design and requested competing plans/reviews allowed.\n- **Real concurrency.** Fan exactly to genuine decomposition, one `tasks[]` array. NEVER serialize concurrent slices, invent padding, or spawn one then idle.\n- **User intent.** Subagents lack conversation; retain interpretation/taste; each assignment gets all slice requirements.\n- **Cap:** At most 32 subagents concurrently; excess queues. `tasks[]` batch > 32 delays results: stay within cap.\n- **Dependencies only.** A before B only if B strictly needs A; shared prerequisite inline, then fan out. “Parallelize” = parallel execution of independent slices, not agents routing sequential work. Small missing piece: run parallel; B asks A via `hub`!\n\n§ Workflow\n# 1. Scope\n- Read relevant skills first.\n- Multi-file work: plan before files.\n\n# 2. Research Before Editing\n- Read sections, not snippets. MUST reuse existing patterns; second convention beside existing is PROHIBITED.\n\n- Tool failure/file change since read → re-read before acting.\n\n# 3. Decompose\n\n# 4. Implement\n- Fix source; NEVER suppress symptom/special-case input unless asked.\n- Clean cutover: migrate every caller; remove obsolete code/comments/aliases/re-exports/deprecated paths.\n- Prefer existing-file updates over new files. Review as user.\n- NEVER run destructive git commands/delete unrelated code you didn't write; code the cutover obsoletes is in scope.\n\n# 5. Verify\n- NEVER yield non-trivial work without deliverable proof:\n  - **Experiment/investigation** → run; output is proof; no tests.\n  - **UI change** → verify against the actual surface:\n    - **Web UI** → use `browser.open` to get a tab handle, its direct helpers for common actions, `tab.run` for custom JavaScript, and `tab.close` when done; visual confirmation is proof; no tests unless existing suite really breaks.\n    - **TUI/CLI** → launch the actual program and verify terminal interaction, output, or state.\n    - No suitable runtime capability for the changed surface → verify with a throwaway script or smoke test; explicitly report when visual verification cannot be performed.\n  - **Bug fix** → reproduce, fix, confirm reproduction no longer triggers. SHOULD keep the reproduction as a regression test: fails pre-fix, passes post-fix; impractical → smoke test, report it.\n  - **Permanent feature/API change** → fix existing tests the changed contract breaks; prove new behavior with a throwaway script. New test ONLY for a genuinely uncertain edge case, or on user request.\n- Smoke test: run thing, not test file; launch, exercise changed path, observe result.\n- Tests: permanent load, not proof of work. A test earns its place ONLY where a plausible bug would fail it.\n  - Each MUST defend observable contract/fail on plausible bug.\n  - Test behavior, boundaries, invariants, transitions, precedence, real errors—not plumbing, source text, incidental defaults.\n  - Match conventions; deterministic, isolated, full-suite-safe.\n  - NEVER write a test so the change \"has tests\" → throwaway script.\n  - NEVER assert implementation: wiring, field copies, defaults, forwarding, mock echoes, source text → assert what a consumer observes.\n  - NEVER pad: same-path parameter rows, tautologies, bare not-throw, non-empty/length-grew checks.\n  - Worth keeping: behavior, boundaries, invariants, transitions, precedence, real errors. Match conventions; deterministic, isolated, full-suite-safe.\n  - Existing test failing this bar (pins wording, implementation, incidental behavior) → MUST delete; NEVER re-pin it to the new text. In scope regardless of author.\n\n# 6. Cleanup\nLast phase; REQUIRED after smoke test proves work; NEVER pre-plan/pre-allocate cleanup todos.\n- Permanent feature/bug fix → docs, changelog, scaffold + throwaway-script removal; tests only per Verify.\n- Experiment/one-off investigation → no cleanup tests/docs.\n\n§ Delivery\n<contract>\nInviolable.\n- NEVER yield before complete deliverable; phase boundary/todo flip/sub-step never yields: same turn.\n- NEVER fabricate output; code/tool/test/doc/source claims MUST be grounded.\n- NEVER substitute easier/familiar problem: don't infer extra scope—retries, validation, telemetry, abstraction “while you're at it”—or solve symptom—suppress warning/exception, special-case input—unless asked. Real ask only.\n- NEVER ask for tool/repo/file-provided information; NEVER punt half-solved work.\n- Default clean cutover: migrate every caller; no shims, aliases, deprecated paths.\n</contract>\n\n<completeness>\n- “Done”: specified end-to-end behavior plus every named acceptance criterion; not compiling scaffold, narrowed test, plausible subset.\n- Reduce scope only with explicit user approval in this conversation; NEVER silently shrink.\n- NEVER deliver unfinished work: stubs, placeholders, mocks, no-ops, fake fallbacks, `TODO: implement`, misleading “scaffold”/“MVP”/“v1”/“foundation”/“follow-up”. Unavailable real-implementation info → state missing prerequisite; finish all reachable work.\n</completeness>\n\n<evidence-and-output>\n- Format MUST match ask; prose brief; evidence, verification, blocking details complete.\n- Code/tool/test/doc/source claims MUST be grounded; unobserved claims `[INFERENCE]`.\n- Verification claims exactly match exercised work.\n</evidence-and-output>\n\n<yielding>\nBefore yielding: all affected callsites/tests/docs updated or intentionally unchanged; output/evidence requirements satisfied.\nBefore blocked: ensure info unreachable via tools/context; one failed check ≠ blocked. Finish reachable work; state exactly missing and tried.\n</yielding>\n\n§ Critical\n<critical>\n- NEVER yield while actionable work remains; phase boundary/todo flip/sub-step never stops: same turn.\n- NEVER narrate/consider session limits, token/tool budgets, effort estimates, or possible completion; start unbounded: execute/delegate.\n- NEVER re-audit applied edit or routinely run git subcommands for validation. Tool results are verification.\n</critical>\n\n§ Role\nWorker agent: delegated tasks.\n\nTools: FULL access (edit, write, bash, grep, read, etc.); MUST use as needed to complete task.\nMUST hyperfocus assigned task; NEVER deviate.\n\n<directives>\n- MUST finish assigned work only; return minimum useful result; do not repeat filesystem writes.\n- SHOULD edit files, run commands, create files when task requires.\n- MUST concise; NEVER filler, repetition, tool transcripts. User cannot see you; result: notes for yourself.\n- SHOULD prefer narrow lookups (`grep`/`glob`), then read needed ranges only; ignore beyond current scope.\n- AVOID full-file reads unless necessary.\n- SHOULD prefer editing existing files over creating new files.\n- NEVER create documentation files (`*.md`) unless explicitly requested.\n- MUST follow assignment and instructions.\n- `task` delegation: select most specific `agent` type per spawn; general-purpose worker only if no listed specialist fits.\n</directives>\n\n§ Context\n# Goal\nResume #302 STEP 1 SOURCE-ONLY work from unvalidated checkpoint bd5d99aa19261a946e2f27bce26584778f871a30 in .worktrees/302-net-worker-stamps. Diagnostic only; no product remedy, PR, changelog or new requirement activation.\n# Constraints\nDoyle BNGCFO7U: gate229 owns released309 pool. NO CARGO IN ANY TREE, no builds/tests/formatters/linters, no pool claim/move. Skip all validation. Do not invoke LSP actions that start Cargo. Do not modify harness identity/resident lifecycle. Read .spt/preserved/302/STEP1-DRIVER.md for fixed schema/thresholds. Main owns spt-net-diag/src/lib.rs and nethost integration; do not edit those. Preserve original canary25ms and gauges. No fabricated frames/counters/healthy verdicts. Evidence is unvalidated until authorized native proof.\n# Contract\nPublic spt-net-diag APIs and fork callback Hook fn(&'static str,&'static str,&'static str,u64)->u64 remain unchanged. Native phases begin/end lowercase; outcomes ok/error/cancelled; unset dependency hook exactly one atomic load, no allocation/logger. StackSampler::new([u32;2])->io::Result<Self>, capture()->serde_json::Value remains stable; workers in input TID order; truthful frames/errors/perturbation. Do not edit lib.rs; report necessary cross-file changes to Main. No rebase/commit required.\n§ Coop\nYou are operating on a piece of work assigned to you by the main agent.\n\n# Validation\nProject-wide validation is the main agent's job, run once after all subagents land. NEVER run formatters, linters, or project-wide builds/test suites unless your assignment explicitly instructs it — siblings edit concurrently; mid-flight validation blocks on their half-finished changes and reports phantom failures. Scoped proof of your own change (single test file, targeted repro, smoke run) is fine.\n# Peers\nYou can reach other live agents via the `hub` tool. Your id is `StackSource302`. Currently visible peers:\n- `BoundarySource302` — task (sub, running)\n- `Main` — main (main, running)\n27 parked peer(s) omitted.\n\nUse `hub` messaging only for quick coordination, never long-form content. Address peers by id or use `\"all\"` to broadcast.\n- Discovery: the roster above shows live (running+idle) peers and a parked count, never parked names or task labels. `hub` op:\"list\" refreshes the live view; pass status:\"parked\" to inspect parked history.\n- Coordination: before you edit a file or start work a sibling may already own, message that peer first — overlapping edits collide. Idle peers are not gone: messaging them wakes them.\n- Follow-up: answer a peer's question with a short reply (set `replyTo`); use `await` only when you genuinely cannot proceed without the answer.\n- Parked history: omitted from this roster. `hub` op:\"list\" status:\"parked\" lists ids; `send` to a known parked id revives it. `history://<id>` and `agent://<id>` stay readable.\n\n§ Completion\nNo TODO tracking, no progress updates. Execute; report results with `yield`.\n\nWhile work remains, you MUST continue with another tool call — investigate, edit, run, verify. Save narrative for a terminal `yield` unless you intentionally record an incremental section.\n\nYield protocol:\n- Omit `type` for the normal single terminal structured result in `data`.\n- Use non-empty `type: string[]` for incremental, non-terminal sections; calls accumulate by section.\n- Use `type: string` for a terminal result; if data is omitted, your last assistant turn becomes the raw final result.\n\nThis is your only way to return a final result. For structured results, you NEVER put JSON in plain text or substitute a text summary for `data`.\nGiving up is a last resort. If truly blocked, you MUST terminal-yield `{ error }` describing what you tried and the exact blocker.\nYou NEVER give up due to uncertainty, missing information obtainable via tools or repo context, or needing a design decision you can derive yourself.\n\nYou MUST keep going until this ticket is closed. This matters.\n\nPROJECT\n\n<workstation>\n- OS: win32 10.0.26200\n- Distro: Windows_NT\n- Kernel: Windows 11 Pro\n- Arch: x64\n- CPU: AMD Ryzen 7 7800X3D 8-Core Processor\n- GPU: AMD Radeon(TM) Graphics\n- Model: openai-codex/gpt-6-astra\n</workstation>\n<critical>\n- Each response MUST advance the task; completion only stopping condition.\n- MUST default to informed action; do not ask for confirmation when tools or repo context can answer.\n- Before yielding, MUST verify significant behavioral changes: run the specific test, command, or scenario covering the change.\n</critical>","task":"Complete assignment thoroughly:\n\n# Target\nOwn crates/spt-net-diag/src/stacks.rs and stacks/windows.rs in .worktrees/302-net-worker-stamps only. Do not edit lib.rs, nethost or manifest.\n# Change\nInspect Windows native stack capture source for correctness under actual suspended workers: no alloc/Rust locks while suspended, guaranteed resume all error paths, valid x64 unwind callback/raw evidence/PDB handling, honest idle classification, measured capture/perturbation. Fix concrete source defects without broad abstraction. Remove plain nonexistent REQ-RC-HITCH-BOUNDARY-STAMPS comment; no newREQ or tags. Maintain interface and worker input order. Report init-latency/first-symbol-load effects to Main so observer can stay truthful.\n# Acceptance\nReturn exact edits and unvalidated risks; <=100ms remains a proof obligation, not claim. NO Cargo/tests/build/formatter/linter or runtime/debugger execution. 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{"type":"message","id":"cc799ff6","parentId":"193ba180","timestamp":"2026-09-16T07:06:12.328Z","message":{"role":"user","content":[{"type":"text","text":"Complete assignment thoroughly:\n\n# Target\nOwn crates/spt-net-diag/src/stacks.rs and stacks/windows.rs in .worktrees/302-net-worker-stamps only. Do not edit lib.rs, nethost or manifest.\n# Change\nInspect Windows native stack capture source for correctness under actual suspended workers: no alloc/Rust locks while suspended, guaranteed resume all error paths, valid x64 unwind callback/raw evidence/PDB handling, honest idle classification, measured capture/perturbation. Fix concrete source defects without broad abstraction. Remove plain nonexistent REQ-RC-HITCH-BOUNDARY-STAMPS comment; no newREQ or tags. Maintain interface and worker input order. Report init-latency/first-symbol-load effects to Main so observer can stay truthful.\n# Acceptance\nReturn exact edits and unvalidated risks; <=100ms remains a proof obligation, not claim. NO Cargo/tests/build/formatter/linter or runtime/debugger execution. No external debugger or resident interaction."}],"attribution":"agent","timestamp":1789542372276}}
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{"type":"message","id":"13f7c621","parentId":"9a30056a","timestamp":"2026-09-16T07:06:34.525Z","message":{"role":"toolResult","toolCallId":"call_cStwVdmBqnwby9tutIi9h2b6|fc_0ba31c31d1cf7dc5016aaa3ffa6c1087d29822683b4a648433","toolName":"read","content":[{"type":"text","text":"[.spt/preserved/302/STEP1-DRIVER.md#2947]\n1:# #302 STEP 1 field-driver contract — v1\n2:\n3:Owner: hertz. Instrumentation producer: todlando, after W2b and #309. Ruling: [5691417538](https://github.com/BigscreenVR/spt-bs-releases/issues/302#issuecomment-5691417538). Authorization: Doyle BPO6OCD5. This is a diagnostic contract, not the conditional remedy.\n4:\n5:## Execution and safety\n6:\n7:One-command capture after the authorized instrumented build is staged:\n8:\n9:```text\n10:python .spt/preserved/302/step1-field.py --host decid@enlyzeam --seconds 180 --out .spt/preserved/302/field-STEP1-<unique-run>\n11:```\n12:\n13:This wrapper performs steps1–3 below, preserves before/after log bytes and their hashes, verifies append-only continuity, and runs the analyzer locally. Its SSH script is compressed into a bounded EncodedCommand; no remote helper file or stdin-EOF dependency. Optional `--home`, `--binary` and `--pty` override explicit inputs. It does not stage the build. Logs over16MiB refuse rather than silently omit epoch/sequence evidence.\n14:\n15:1. Run `step1-collect.ps1` on ENLYZEAM via the already-authorized SSH route. It only launches `spt node status --json` with `SPT_RC_HITCH_DIAG=1`, explicit resident home and scrubbed inherited SPT/OWL/CLAUDE identity. It emits JSONL to stdout; redirect it on the collecting machine, not into resident configuration. Default 180 seconds, 1 Hz, 5-second per-query limit. Kill only the retained owned query-client handle on timeout. Record skipped schedules rather than issuing catch-up bursts.\n16:2. Read a bounded byte snapshot of `logs/daemon.stderr.log` before and after the window. Preserve source path, byte range, capture UTC and SHA256. A rotated/truncated log or changed broker is a separate epoch, never silently stitched. Do not restart, update, configure, attach a debugger to, or stop a resident. The staged instrumented binary owns its watchdog/stack collection; this driver only reads its output.\n17:3. Run `step1-analyze.py --samples <jsonl> --log <snapshot> --out <new-directory>`. Outputs: normalized samples, round alignment, boundary spans, stack captures, per-interval verdict JSONL and summary JSON. Existing output is refused.\n18:4. Keep the original 25ms canary and dial gauge unchanged. Keep the simultaneous real rc ACK/echo observer independent; accept optional `--pty <jsonl>` for its timestamped observations. Missing PTY evidence is explicitly `not_observed`, never a claim that canary stalls caused the user-visible hitch.\n19:\n20:Completion: legacy dry-run emits honest insufficient-evidence rows; instrumented evidence can discriminate the candidate using both workers, with the same thresholds. No permission escalation is part of this lane.\n21:\n22:## Thresholds fixed before the run\n23:\n24:| Quantity | Contract |\n25:|---|---|\n26:| Default window | 180s at 1 Hz; valid range 10–900s |\n27:| Status query | owned client deadline 5000ms; kill confirmation 2000ms |\n28:| Usable diagnostic sample | exit 0, no timeout/probe error, net enabled, nonnegative numeric age/dials, same broker epoch; outer query <=250ms and gauge query <=250ms for precise joins |\n29:| Sample cadence | no inter-sample gap >1500ms within one observed stale episode; gaps split episodes and invalidate complete-run coverage |\n30:| Stale canary | age >=1000ms (40 nominal ticks); severe >=2000ms |\n31:| Healthy recovery | next valid sample below1000ms; observation gives a recovery bound, not an exact recovery time |\n32:| Long synchronous boundary | >=250ms; short overlaps are reported but not sufficient mechanism evidence |\n33:| Meet association | round before a peak by 0–15000ms; report the actual bounds, never force the historical 5–10s expectation |\n34:| Clock alignment | wall-minus-monotonic offset spread <=100ms within an epoch; otherwise temporal verdict is insufficient |\n35:| Instrumentation heartbeat | independent of the net runtime, at least every1000ms; interval coverage rejects >1500ms gaps or dropped/missing sequence records |\n36:| Stack trigger | independent watchdog when original canary age >=1000ms; paired both-worker capture every500ms while stale, max capture span100ms; errors and perturbation measured |\n37:| Repeated stack evidence | two complete paired captures >=250ms apart in the stale support interval; no one-worker substitution |\n38:| Run coverage PASS | >=95% usable samples, duration >=170s for default180s, no cadence gap >1500ms, one broker epoch; all six boundary capabilities, complete sequence/heartbeat coverage and both-worker evidence for every stale interval |\n39:| Mechanism CONFIRMED | a long synchronous candidate boundary on a named net worker overlaps a stale interval, and repeated paired stacks account for BOTH workers in candidate synchronous boundaries (or both tied to the same such operation). Mere async bind overlap is not enough |\n40:| Mechanism FALSIFIED for interval | complete candidate-boundary coverage places all boundaries outside the stale support; OR repeated complete paired stacks show both workers idle; OR both show unrelated progress using increasing genuine per-worker counters |\n41:| Otherwise | INSUFFICIENT_EVIDENCE; overlaps may still be reported. Missing diagnostics, no stale episodes, unknown worker, async wait only, clock discontinuity, or open/unmatched spans never become a healthy/falsified result |\n42:\n43:A run may be `MIXED`: some episodes confirm while others falsify. One confirmed episode establishes occurrence, not that all hitches have the same cause. Legacy data is not subject to an invented completeness PASS.\n44:\n45:## Canary intervals and clocks\n46:\n47:Preserve the existing fields `sampled_at_ms`, `net_canary_age_ms`, `active_dial_tasks`, `query_elapsed_ms`, `broker_pid`, `broker_version`. `sampled_at_ms` is wall time; the existing canary age also uses epoch milliseconds. Derive each stale sample's supported interval as `[sampled_at_ms - age + 1000, sampled_at_ms]`. Group successive stale samples only when no usable healthy sample intervenes and spacing <=1500ms. Emit observed first/last/peak, union support bounds, recovery bound, left/right censoring, maximum age and every dial count. Invalid samples break rather than bridge episodes.\n48:\n49:Clock-join uncertainty includes the status query duration. Product stamps use a shared process-wide monotonic clock plus wall clock. Do not infer monotonic time from TOTP step: NTP can shift the ceremony clock. For v1, align stamps via their wall clocks only after checking wall-minus-monotonic stability. Carry original monotonic stamps and operation durations in every row. Do not merge process restarts using PID alone: structured records have a unique `run_id`.\n50:\n51:Conservative join: stack captures must fit inside the stale support after shrinking both ends by sample-query uncertainty. Boundary exclusion uses the support expanded by that uncertainty. Raw bounds remain in output; near-edge evidence cannot silently become a confident exclusion.\n52:\n53:## Structured stamp schema — producer contract\n54:\n55:One atomic log line per record:\n56:\n57:```text\n58:NET_DIAG_V1: {\"v\":1,\"event\":\"NET_IF_ENUM_BEGIN\",\"seq\":12,\"run_id\":\"unique-broker-start\",\"broker_pid\":48932,\"wall_ms\":1789526670000,\"mono_ms\":123456,\"runtime\":\"spt-broker-net\",\"tid\":111,\"op_id\":\"17\",\"parent_op_id\":\"9\",\"execution\":\"sync\",\"subnet\":\"SPT_DEV\",\"step\":59650889}\n59:```\n60:\n61:Common REQUIRED fields: `v=1`, `event`, contiguous process-wide `seq` (START is seq0), unique `run_id`, `broker_pid`, `wall_ms`, `mono_ms`. Milliseconds are integer values from one monotonic origin shared across the broker's threads. `seq` is assigned at emission; serialize the line so partial/interleaved JSON cannot look complete. The parser retains file line numbers and rejects contradictory duplicates/gaps. No synchronous stderr flush/lock is allowed to become an unmeasured new worker stall; expose dropped records and instrument emission overhead if applicable.\n62:\n63:### Epoch and coverage\n64:\n65:- `NET_DIAG_START`: adds `worker_tids` (exact two actual OS TIDs for the unchanged `spt-broker-net` runtime), `capabilities` (the six base names below), `canary_period_ms:25`, `dropped_records:0`. Capture/announce after both worker IDs are known, not guessed from thread names. An incomplete startup census is unsupported.\n66:- `NET_DIAG_HEARTBEAT`: adds `dropped_records` (cumulative, must remain0). Emit on an independent observer, not a stalled runtime task.\n67:- `NET_DIAG_END`: normal epoch end if available; includes `dropped_records`. Driver may use a continuing live epoch with START and heartbeat coverage through the end of the sampled interval.\n68:\n69:### Boundary names and scope\n70:\n71:Every BEGIN/END pair carries the same `op_id`, `runtime`, `execution`, `parent_op_id` (null if no parent), and the actual `tid` at each stamp. END also carries `outcome` (`ok`, `error`, `cancelled`). IDs are unique within run_id. Nesting must retain parent identity. Async tasks may migrate TIDs; synchronous boundaries may not. `runtime` is `spt-broker-net`, `blocking-pool`, or `other`; labels describe the actual execution context, not the caller's intention.\n72:\n73:| Base name, suffixed `_BEGIN` / `_END` | Exact boundary | execution |\n74:|---|---|---|\n75:| `NET_IF_ENUM` | actual synchronous interface enumeration / GetAdaptersAddresses, including retry loop | sync |\n76:| `NET_GATEWAY_LOOKUP` | portmapper ip_and_gateway/HomeRouter::new synchronous work before protocol futures | sync |\n77:| `NET_CANCEL_MIB` | actual CancelMibChangeNotify2 call, per registration; not merely wrapper Drop entry | sync |\n78:| `NET_MEET_BIND` | whole per-subnet bind_rendezvous / endpoint builder bind; include subnet, step | async |\n79:| `NET_MEET_RETIRE` | actual endpoint/task retirement lifetime; include subnet, step, and `stage` on both stamps (`abort-request`, `task-drop`, or `endpoint-drop`), label sync/async truthfully | sync or async |\n80:| `NET_NTP_REFRESH` | actual cache-miss NTP refresh, including mutex/DNS/socket work, NOT every cache-hit now_secs call | sync |\n81:\n82:Abort requested is not retirement complete. Instrument the actual destructor/OS call separately. An open span remains open and unbounded; never synthesize END when a handle is merely aborted. Boundary END duration is computed from mono_ms, not wall time. Off-runtime synchronous work is recorded but does not by itself explain both net workers starving.\n83:\n84:### Meet/family alignment\n85:\n86:Keep existing human lines. Also emit structured `NET_MEET_ROUND` (step, subnets array), `NET_FAMILY_GATE` and `PAIR_MEET_UP` (step, subnet, op_id of the bind). These use the common timestamp/epoch fields. Family gates are emitted AFTER family probing, just as today. Bind attribution must be carried through the task, not guessed from the last log line.\n87:\n88:Legacy 0.70.0 lines without timestamps are bounded by nearest surrounding wall_ms log lines and grouped by their actual PAIR_MEET_UP step. Such bounds are line-order evidence only: concurrent writers can interleave, so flag them approximate. Report unpaired NET_FAMILY_GATE lines; never assign each gate to a subnet by adjacency. Three subnets are an admission observation, not a parser constant.\n89:\n90:### Both-worker stack capture\n91:\n92:`NET_WORKERS_SNAPSHOT` common fields plus:\n93:\n94:```json\n95:{\"capture_id\":\"s3\",\"capture_begin_mono_ms\":123000,\"capture_end_mono_ms\":123030,\"trigger_canary_age_ms\":2030,\"workers\":[{\"tid\":111,\"activity\":\"boundary\",\"op_id\":\"17\",\"frames\":[\"ntdll!NtWaitForSingleObject\",\"iphlpapi!GetAdaptersAddresses\"],\"progress_counter\":null,\"error\":null},{\"tid\":222,\"activity\":\"boundary\",\"op_id\":\"18\",\"frames\":[\"iphlpapi!CancelMibChangeNotify2\"],\"progress_counter\":null,\"error\":null}]}\n96:```\n97:\n98:`workers` must cover both START TIDs exactly, with no error, real symbolized frames, capture duration<=100ms and trigger age>=1000ms. Include raw stack evidence in the frames (or additionally a retained raw artifact); unknown/unwind failure stays explicit. `activity` is `boundary`, `idle`, `unrelated`, or `unknown`:\n99:- boundary: op_id must match a synchronous active span on that worker; frames must contain the relevant boundary symbol, not just a generic wait. Async builder/probe frames alone are not blocked-worker proof.\n100:- idle: real Tokio worker/park or reactor-park frames; a generic Windows wait alone does not prove executor idle.\n101:- unrelated: nonempty real frames plus a genuine completed-work counter increasing between paired captures. If that counter is unavailable, use unknown; do not manufacture one from sample number or wall time.\n102:\n103:The independent watchdog captures while the original canary is stale; worker-cooperative callbacks that only run after recovery cannot establish an in-peak stack. No driver-triggered external debugger attach is authorized. Capture must record its own elapsed time so induced stalls are visible.\n104:\n105:## Optional PTY observation input\n106:\n107:JSONL rows: `wall_ms`, `route` (`local` or `remote`), `tag`, `sent_ms`, `ack_ms` (null if not yet observed), `state_confirmed` boolean. The driver reports correlations and RTT with a2000ms bound; no PTY input means the runtime discriminator is usable but user-visible causality remains unmeasured. Existing observer formats must be adapted explicitly rather than silently inferred.\n108:\n109:## Artifacts and command forms\n110:- `step1-field.py`: bounded SSH wrapper performing log-before → collector → log-after → append-only check → local analysis, retaining each receipt. Exit codes follow the analyzer unless capture fails.\n111:\n112:- `step1-collect.ps1`: read-only 1Hz collector, stdout JSONL; parameters `-Seconds`, `-HomePath`, `-Binary`, optional `-ReplaySamples` for local dry-run without launching any spt process.\n113:- `step1_rounds.py`: `parse_rounds(lines)` returns legacy/structured round evidence; `align_rounds(rounds, interval_start_ms, peak_ms)` returns bounded preceding associations.\n114:- `step1-analyze.py`: command above. Exit0 = fully discriminated field run; exit2 = valid analysis with insufficient evidence/coverage; exit1 = malformed input or execution failure. A supported mechanism result is not a product-fix PASS.\n115:\n116:## Verified dry-run receipts\n117:\n118:- `step1-dry-run-070-final/`: historical ENLYZEAM180 samples, all180 usable; 17 stale, 7 severe, maximum4912ms, dials0 throughout. Eleven threshold-defined stale intervals. All11 correctly emit `INSUFFICIENT_EVIDENCE` because0.70.0 supplies no boundary stamps or worker stacks; analyzer exit2.\n119:- Actual0.70.0 log snapshot: `enlyzeam-070-daemon-snapshot.log`, SHA256 `71191246be63369db00f4bc41b5e7c92515a6e15ace3a896616ba7140c90709a`. Each of the three largest peaks has a possible preceding three-subnet UP envelope and three family gates. Timing brackets are broad; two include slightly post-peak UP times. The parser does not turn the historical5–10s interpretation into exact data.\n120:- `step1-replay.jsonl`: all180 collector replay rows preserve every original measurement field exactly, exit0.\n121:- `step1-live-smoke-070.jsonl`: ten read-only live status queries on ENLYZEAM, same resident broker48932/version0.70.0; all clients exit0 with termination confirmed. No daemon lifecycle action.\n122:- `step1-field-smoke-070-v2/field-receipt.json`: complete wrapper smoke, ten-second collector exit0, before/after logs append-only, local analyzer exit2 as expected for short unsupported legacy evidence.\n123:- `step1-contract-verification.json`: synthetic protocol checks, NOT field mechanism evidence. Twelve discriminator cases and four round-uncertainty cases pass: both-worker synchronous overlap, outside peak, true Tokio idle, unrelated progressing work, async-only, missing worker, generic wait, open span, missing sequence, unknown stamp, clock jump, missing/reversed anchors and duplicate UP.\n124:\n125:Transport-attempt history: an uncompressed encoded script exceeded Windows argv length; a stdin-based wrapper later timed out. The final compressed-argv transport completed the full smoke. The abandoned stdin collector was our own PowerShell process, not a daemon; birth+parent+exact-command checks guarded its termination (`step1-owned-stdin-cleanup.json`). No resident daemon, config, adapter or lifecycle state was changed. Earlier failure artifacts remain preserved.\n126:\n127:Field verdict awaits the staged instrumented build. No synchronous boundary has yet been measured as the #302 culprit, and PTY causality is still unobserved in this lane."}],"details":{"totalLines":127,"displayContent":{"text":"# #302 STEP 1 field-driver contract — v1\n\nOwner: hertz. Instrumentation producer: todlando, after W2b and #309. Ruling: [5691417538](https://github.com/BigscreenVR/spt-bs-releases/issues/302#issuecomment-5691417538). Authorization: Doyle BPO6OCD5. This is a diagnostic contract, not the conditional remedy.\n\n## Execution and safety\n\nOne-command capture after the authorized instrumented build is staged:\n\n```text\npython .spt/preserved/302/step1-field.py --host decid@enlyzeam --seconds 180 --out .spt/preserved/302/field-STEP1-<unique-run>\n```\n\nThis wrapper performs steps1–3 below, preserves before/after log bytes and their hashes, verifies append-only continuity, and runs the analyzer locally. Its SSH script is compressed into a bounded EncodedCommand; no remote helper file or stdin-EOF dependency. Optional `--home`, `--binary` and `--pty` override explicit inputs. It does not stage the build. Logs over16MiB refuse rather than silently omit epoch/sequence evidence.\n\n1. Run `step1-collect.ps1` on ENLYZEAM via the already-authorized SSH route. It only launches `spt node status --json` with `SPT_RC_HITCH_DIAG=1`, explicit resident home and scrubbed inherited SPT/OWL/CLAUDE identity. It emits JSONL to stdout; redirect it on the collecting machine, not into resident configuration. Default 180 seconds, 1 Hz, 5-second per-query limit. Kill only the retained owned query-client handle on timeout. Record skipped schedules rather than issuing catch-up bursts.\n2. Read a bounded byte snapshot of `logs/daemon.stderr.log` before and after the window. Preserve source path, byte range, capture UTC and SHA256. A rotated/truncated log or changed broker is a separate epoch, never silently stitched. Do not restart, update, configure, attach a debugger to, or stop a resident. The staged instrumented binary owns its watchdog/stack collection; this driver only reads its output.\n3. Run `step1-analyze.py --samples <jsonl> --log <snapshot> --out <new-directory>`. Outputs: normalized samples, round alignment, boundary spans, stack captures, per-interval verdict JSONL and summary JSON. Existing output is refused.\n4. Keep the original 25ms canary and dial gauge unchanged. Keep the simultaneous real rc ACK/echo observer independent; accept optional `--pty <jsonl>` for its timestamped observations. Missing PTY evidence is explicitly `not_observed`, never a claim that canary stalls caused the user-visible hitch.\n\nCompletion: legacy dry-run emits honest insufficient-evidence rows; instrumented evidence can discriminate the candidate using both workers, with the same thresholds. No permission escalation is part of this lane.\n\n## Thresholds fixed before the run\n\n| Quantity | Contract |\n|---|---|\n| Default window | 180s at 1 Hz; valid range 10–900s |\n| Status query | owned client deadline 5000ms; kill confirmation 2000ms |\n| Usable diagnostic sample | exit 0, no timeout/probe error, net enabled, nonnegative numeric age/dials, same broker epoch; outer query <=250ms and gauge query <=250ms for precise joins |\n| Sample cadence | no inter-sample gap >1500ms within one observed stale episode; gaps split episodes and invalidate complete-run coverage |\n| Stale canary | age >=1000ms (40 nominal ticks); severe >=2000ms |\n| Healthy recovery | next valid sample below1000ms; observation gives a recovery bound, not an exact recovery time |\n| Long synchronous boundary | >=250ms; short overlaps are reported but not sufficient mechanism evidence |\n| Meet association | round before a peak by 0–15000ms; report the actual bounds, never force the historical 5–10s expectation |\n| Clock alignment | wall-minus-monotonic offset spread <=100ms within an epoch; otherwise temporal verdict is insufficient |\n| Instrumentation heartbeat | independent of the net runtime, at least every1000ms; interval coverage rejects >1500ms gaps or dropped/missing sequence records |\n| Stack trigger | independent watchdog when original canary age >=1000ms; paired both-worker capture every500ms while stale, max capture span100ms; errors and perturbation measured |\n| Repeated stack evidence | two complete paired captures >=250ms apart in the stale support interval; no one-worker substitution |\n| Run coverage PASS | >=95% usable samples, duration >=170s for default180s, no cadence gap >1500ms, one broker epoch; all six boundary capabilities, complete sequence/heartbeat coverage and both-worker evidence for every stale interval |\n| Mechanism CONFIRMED | a long synchronous candidate boundary on a named net worker overlaps a stale interval, and repeated paired stacks account for BOTH workers in candidate synchronous boundaries (or both tied to the same such operation). Mere async bind overlap is not enough |\n| Mechanism FALSIFIED for interval | complete candidate-boundary coverage places all boundaries outside the stale support; OR repeated complete paired stacks show both workers idle; OR both show unrelated progress using increasing genuine per-worker counters |\n| Otherwise | INSUFFICIENT_EVIDENCE; overlaps may still be reported. Missing diagnostics, no stale episodes, unknown worker, async wait only, clock discontinuity, or open/unmatched spans never become a healthy/falsified result |\n\nA run may be `MIXED`: some episodes confirm while others falsify. One confirmed episode establishes occurrence, not that all hitches have the same cause. Legacy data is not subject to an invented completeness PASS.\n\n## Canary intervals and clocks\n\nPreserve the existing fields `sampled_at_ms`, `net_canary_age_ms`, `active_dial_tasks`, `query_elapsed_ms`, `broker_pid`, `broker_version`. `sampled_at_ms` is wall time; the existing canary age also uses epoch milliseconds. Derive each stale sample's supported interval as `[sampled_at_ms - age + 1000, sampled_at_ms]`. Group successive stale samples only when no usable healthy sample intervenes and spacing <=1500ms. Emit observed first/last/peak, union support bounds, recovery bound, left/right censoring, maximum age and every dial count. Invalid samples break rather than bridge episodes.\n\nClock-join uncertainty includes the status query duration. Product stamps use a shared process-wide monotonic clock plus wall clock. Do not infer monotonic time from TOTP step: NTP can shift the ceremony clock. For v1, align stamps via their wall clocks only after checking wall-minus-monotonic stability. Carry original monotonic stamps and operation durations in every row. Do not merge process restarts using PID alone: structured records have a unique `run_id`.\n\nConservative join: stack captures must fit inside the stale support after shrinking both ends by sample-query uncertainty. Boundary exclusion uses the support expanded by that uncertainty. Raw bounds remain in output; near-edge evidence cannot silently become a confident exclusion.\n\n## Structured stamp schema — producer contract\n\nOne atomic log line per record:\n\n```text\nNET_DIAG_V1: {\"v\":1,\"event\":\"NET_IF_ENUM_BEGIN\",\"seq\":12,\"run_id\":\"unique-broker-start\",\"broker_pid\":48932,\"wall_ms\":1789526670000,\"mono_ms\":123456,\"runtime\":\"spt-broker-net\",\"tid\":111,\"op_id\":\"17\",\"parent_op_id\":\"9\",\"execution\":\"sync\",\"subnet\":\"SPT_DEV\",\"step\":59650889}\n```\n\nCommon REQUIRED fields: `v=1`, `event`, contiguous process-wide `seq` (START is seq0), unique `run_id`, `broker_pid`, `wall_ms`, `mono_ms`. Milliseconds are integer values from one monotonic origin shared across the broker's threads. `seq` is assigned at emission; serialize the line so partial/interleaved JSON cannot look complete. The parser retains file line numbers and rejects contradictory duplicates/gaps. No synchronous stderr flush/lock is allowed to become an unmeasured new worker stall; expose dropped records and instrument emission overhead if applicable.\n\n### Epoch and coverage\n\n- `NET_DIAG_START`: adds `worker_tids` (exact two actual OS TIDs for the unchanged `spt-broker-net` runtime), `capabilities` (the six base names below), `canary_period_ms:25`, `dropped_records:0`. Capture/announce after both worker IDs are known, not guessed from thread names. An incomplete startup census is unsupported.\n- `NET_DIAG_HEARTBEAT`: adds `dropped_records` (cumulative, must remain0). Emit on an independent observer, not a stalled runtime task.\n- `NET_DIAG_END`: normal epoch end if available; includes `dropped_records`. Driver may use a continuing live epoch with START and heartbeat coverage through the end of the sampled interval.\n\n### Boundary names and scope\n\nEvery BEGIN/END pair carries the same `op_id`, `runtime`, `execution`, `parent_op_id` (null if no parent), and the actual `tid` at each stamp. END also carries `outcome` (`ok`, `error`, `cancelled`). IDs are unique within run_id. Nesting must retain parent identity. Async tasks may migrate TIDs; synchronous boundaries may not. `runtime` is `spt-broker-net`, `blocking-pool`, or `other`; labels describe the actual execution context, not the caller's intention.\n\n| Base name, suffixed `_BEGIN` / `_END` | Exact boundary | execution |\n|---|---|---|\n| `NET_IF_ENUM` | actual synchronous interface enumeration / GetAdaptersAddresses, including retry loop | sync |\n| `NET_GATEWAY_LOOKUP` | portmapper ip_and_gateway/HomeRouter::new synchronous work before protocol futures | sync |\n| `NET_CANCEL_MIB` | actual CancelMibChangeNotify2 call, per registration; not merely wrapper Drop entry | sync |\n| `NET_MEET_BIND` | whole per-subnet bind_rendezvous / endpoint builder bind; include subnet, step | async |\n| `NET_MEET_RETIRE` | actual endpoint/task retirement lifetime; include subnet, step, and `stage` on both stamps (`abort-request`, `task-drop`, or `endpoint-drop`), label sync/async truthfully | sync or async |\n| `NET_NTP_REFRESH` | actual cache-miss NTP refresh, including mutex/DNS/socket work, NOT every cache-hit now_secs call | sync |\n\nAbort requested is not retirement complete. Instrument the actual destructor/OS call separately. An open span remains open and unbounded; never synthesize END when a handle is merely aborted. Boundary END duration is computed from mono_ms, not wall time. Off-runtime synchronous work is recorded but does not by itself explain both net workers starving.\n\n### Meet/family alignment\n\nKeep existing human lines. Also emit structured `NET_MEET_ROUND` (step, subnets array), `NET_FAMILY_GATE` and `PAIR_MEET_UP` (step, subnet, op_id of the bind). These use the common timestamp/epoch fields. Family gates are emitted AFTER family probing, just as today. Bind attribution must be carried through the task, not guessed from the last log line.\n\nLegacy 0.70.0 lines without timestamps are bounded by nearest surrounding wall_ms log lines and grouped by their actual PAIR_MEET_UP step. Such bounds are line-order evidence only: concurrent writers can interleave, so flag them approximate. Report unpaired NET_FAMILY_GATE lines; never assign each gate to a subnet by adjacency. Three subnets are an admission observation, not a parser constant.\n\n### Both-worker stack capture\n\n`NET_WORKERS_SNAPSHOT` common fields plus:\n\n```json\n{\"capture_id\":\"s3\",\"capture_begin_mono_ms\":123000,\"capture_end_mono_ms\":123030,\"trigger_canary_age_ms\":2030,\"workers\":[{\"tid\":111,\"activity\":\"boundary\",\"op_id\":\"17\",\"frames\":[\"ntdll!NtWaitForSingleObject\",\"iphlpapi!GetAdaptersAddresses\"],\"progress_counter\":null,\"error\":null},{\"tid\":222,\"activity\":\"boundary\",\"op_id\":\"18\",\"frames\":[\"iphlpapi!CancelMibChangeNotify2\"],\"progress_counter\":null,\"error\":null}]}\n```\n\n`workers` must cover both START TIDs exactly, with no error, real symbolized frames, capture duration<=100ms and trigger age>=1000ms. Include raw stack evidence in the frames (or additionally a retained raw artifact); unknown/unwind failure stays explicit. `activity` is `boundary`, `idle`, `unrelated`, or `unknown`:\n- boundary: op_id must match a synchronous active span on that worker; frames must contain the relevant boundary symbol, not just a generic wait. Async builder/probe frames alone are not blocked-worker proof.\n- idle: real Tokio worker/park or reactor-park frames; a generic Windows wait alone does not prove executor idle.\n- unrelated: nonempty real frames plus a genuine completed-work counter increasing between paired captures. If that counter is unavailable, use unknown; do not manufacture one from sample number or wall time.\n\nThe independent watchdog captures while the original canary is stale; worker-cooperative callbacks that only run after recovery cannot establish an in-peak stack. No driver-triggered external debugger attach is authorized. Capture must record its own elapsed time so induced stalls are visible.\n\n## Optional PTY observation input\n\nJSONL rows: `wall_ms`, `route` (`local` or `remote`), `tag`, `sent_ms`, `ack_ms` (null if not yet observed), `state_confirmed` boolean. The driver reports correlations and RTT with a2000ms bound; no PTY input means the runtime discriminator is usable but user-visible causality remains unmeasured. Existing observer formats must be adapted explicitly rather than silently inferred.\n\n## Artifacts and command forms\n- `step1-field.py`: bounded SSH wrapper performing log-before → collector → log-after → append-only check → local analysis, retaining each receipt. Exit codes follow the analyzer unless capture fails.\n\n- `step1-collect.ps1`: read-only 1Hz collector, stdout JSONL; parameters `-Seconds`, `-HomePath`, `-Binary`, optional `-ReplaySamples` for local dry-run without launching any spt process.\n- `step1_rounds.py`: `parse_rounds(lines)` returns legacy/structured round evidence; `align_rounds(rounds, interval_start_ms, peak_ms)` returns bounded preceding associations.\n- `step1-analyze.py`: command above. Exit0 = fully discriminated field run; exit2 = valid analysis with insufficient evidence/coverage; exit1 = malformed input or execution failure. A supported mechanism result is not a product-fix PASS.\n\n## Verified dry-run receipts\n\n- `step1-dry-run-070-final/`: historical ENLYZEAM180 samples, all180 usable; 17 stale, 7 severe, maximum4912ms, dials0 throughout. Eleven threshold-defined stale intervals. All11 correctly emit `INSUFFICIENT_EVIDENCE` because0.70.0 supplies no boundary stamps or worker stacks; analyzer exit2.\n- Actual0.70.0 log snapshot: `enlyzeam-070-daemon-snapshot.log`, SHA256 `71191246be63369db00f4bc41b5e7c92515a6e15ace3a896616ba7140c90709a`. Each of the three largest peaks has a possible preceding three-subnet UP envelope and three family gates. Timing brackets are broad; two include slightly post-peak UP times. The parser does not turn the historical5–10s interpretation into exact data.\n- `step1-replay.jsonl`: all180 collector replay rows preserve every original measurement field exactly, exit0.\n- `step1-live-smoke-070.jsonl`: ten read-only live status queries on ENLYZEAM, same resident broker48932/version0.70.0; all clients exit0 with termination confirmed. No daemon lifecycle action.\n- `step1-field-smoke-070-v2/field-receipt.json`: complete wrapper smoke, ten-second collector exit0, before/after logs append-only, local analyzer exit2 as expected for short unsupported legacy evidence.\n- `step1-contract-verification.json`: synthetic protocol checks, NOT field mechanism evidence. Twelve discriminator cases and four round-uncertainty cases pass: both-worker synchronous overlap, outside peak, true Tokio idle, unrelated progressing work, async-only, missing worker, generic wait, open span, missing sequence, unknown stamp, clock jump, missing/reversed anchors and duplicate UP.\n\nTransport-attempt history: an uncompressed encoded script exceeded Windows argv length; a stdin-based wrapper later timed out. The final compressed-argv transport completed the full smoke. The abandoned stdin collector was our own PowerShell process, not a daemon; birth+parent+exact-command checks guarded its termination (`step1-owned-stdin-cleanup.json`). No resident daemon, config, adapter or lifecycle state was changed. Earlier failure artifacts remain preserved.\n\nField verdict awaits the staged instrumented build. No synchronous boundary has yet been measured as the #302 culprit, and PTY causality is still unobserved in this lane.","startLine":1,"lineNumbers":[1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100,101,102,103,104,105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127]},"fileSize":16090,"meta":{"source":{"type":"path","value":"C:\\Users\\decid\\Documents\\projects\\spt-core\\.spt\\preserved\\302\\STEP1-DRIVER.md"}}},"isError":false,"timestamp":1789542394525}}
{"type":"message","id":"21697463","parentId":"13f7c621","timestamp":"2026-09-16T07:06:34.531Z","message":{"role":"toolResult","toolCallId":"call_NlgCewmKoHyOsuSyLZWWXGcw|fc_0ba31c31d1cf7dc5016aaa3ffa6c2887d2957011c3a9b7daec","toolName":"read","content":[{"type":"text","text":"[.worktrees/302-net-worker-stamps/crates/spt-net-diag/src/stacks/windows.rs#08FB]\n1://! Stack bytes and register contexts are copied while suspended. DbgHelp, Rust\n2://! allocation, formatting, and locks run only after BOTH workers are resumed.\n3://! Image/unwind metadata is read live: unloaded modules, dynamically generated\n4://! code, missing PDBs, and stack-copy limits produce errors, not invented frames.\n5:// REQ-RC-HITCH-BOUNDARY-STAMPS\n6:\n7:use serde_json::{json, Value};\n…\n18-38:use windows_sys::Win32::{ … };\n39:\n40:const STACK_BYTES: usize = 2 * 1024 * 1024;\n41:const MAX_FRAMES: usize = 128;\n42:const IMAGE_FILE_MACHINE_AMD64: u32 = 0x8664;\n43:// Serializes every DbgHelp entry point made by this backend, including Drop.\n44:// Other in-process DbgHelp consumers must also avoid concurrent use; the Windows\n45:// library itself does not provide a process-wide serialization primitive.\n46:static DBGHELP: Mutex<()> = Mutex::new(());\n47:\n48:struct Handle(HANDLE);\n49-55:impl Drop for Handle { … }\n56:\n57:// The bindings' CONTEXT alignment is only 8, whereas GetThreadContext requires 16.\n58:#[repr(C, align(16))]\n59:struct AlignedContext(CONTEXT);\n60:\n61-72:struct Worker { … }\n73:\n74-77:pub(crate) struct StackSampler { … }\n78:\n79-164:impl StackSampler { … }\n165:\n166-173:impl Drop for StackSampler { … }\n174:\n175:fn micros(start: Instant) -> u64 {\n176:    start.elapsed().as_micros().min(u64::MAX as u128) as u64\n177:}\n178:\n179:// Successful suspension owns precisely one suspend-count increment. Drop is the\n180:// fallback for all early returns/unwinds; explicit resume records OS failure.\n181-184:struct ResumeGuard { … }\n185-194:impl ResumeGuard { … }\n195-203:impl Drop for ResumeGuard { … }\n204:\n205-434:impl Worker { … }\n435:\n436-440:struct StackView { … }\n441:thread_local! {\n442:    static READ_VIEW: Cell<*const StackView> = const { Cell::new(ptr::null()) };\n443:}\n444:struct ReadViewGuard(*const StackView);\n445-449:impl ReadViewGuard { … }\n450-454:impl Drop for ReadViewGuard { … }\n455:\n456:unsafe extern \"system\" fn read_snapshot(\n457:    process: HANDLE,\n458:    address: u64,\n459:    destination: *mut c_void,\n460:    size: u32,\n461:    read: *mut u32,\n462-510:) -> i32 { … }\n511:\n512-551:fn symbolize_pc(process: HANDLE, pc: u64, errors: &mut Vec<String>) -> String { … }\n552:\n553-603:fn is_tokio_idle(frames: &[String]) -> bool { … }\n604:\n605:#[cfg(test)]\n606-630:mod tests { … }\n\n[…547ln elided; re-read needed ranges, e.g. .worktrees/302-net-worker-stamps/crates/spt-net-diag/src/stacks/windows.rs:8-17,18-38]"}],"details":{"displayContent":{"text":"//! Stack bytes and register contexts are copied while suspended. DbgHelp, Rust\n//! allocation, formatting, and locks run only after BOTH workers are resumed.\n//! Image/unwind metadata is read live: unloaded modules, dynamically generated\n//! code, missing PDBs, and stack-copy limits produce errors, not invented frames.\n// REQ-RC-HITCH-BOUNDARY-STAMPS\n\nuse serde_json::{json, Value};\n…\nuse windows_sys::Win32::{ … };\n\nconst STACK_BYTES: usize = 2 * 1024 * 1024;\nconst MAX_FRAMES: usize = 128;\nconst IMAGE_FILE_MACHINE_AMD64: u32 = 0x8664;\n// Serializes every DbgHelp entry point made by this backend, including Drop.\n// Other in-process DbgHelp consumers must also avoid concurrent use; the Windows\n// library itself does not provide a process-wide serialization primitive.\nstatic DBGHELP: Mutex<()> = Mutex::new(());\n\nstruct Handle(HANDLE);\nimpl Drop for Handle { … }\n\n// The bindings' CONTEXT alignment is only 8, whereas GetThreadContext requires 16.\n#[repr(C, align(16))]\nstruct AlignedContext(CONTEXT);\n\nstruct Worker { … }\n\npub(crate) struct StackSampler { … }\n\nimpl StackSampler { … }\n\nimpl Drop for StackSampler { … }\n\nfn micros(start: Instant) -> u64 {\n    start.elapsed().as_micros().min(u64::MAX as u128) as u64\n}\n\n// Successful suspension owns precisely one suspend-count increment. Drop is the\n// fallback for all early returns/unwinds; explicit resume records OS failure.\nstruct ResumeGuard { … }\nimpl ResumeGuard { … }\nimpl Drop for ResumeGuard { … }\n\nimpl Worker { … }\n\nstruct StackView { … }\nthread_local! {\n    static READ_VIEW: Cell<*const StackView> = const { Cell::new(ptr::null()) };\n}\nstruct ReadViewGuard(*const StackView);\nimpl ReadViewGuard { … }\nimpl Drop for ReadViewGuard { … }\n\nunsafe extern \"system\" fn read_snapshot(\n    process: HANDLE,\n    address: u64,\n    destination: *mut c_void,\n    size: u32,\n    read: *mut u32,\n) -> i32 { … }\n\nfn symbolize_pc(process: HANDLE, pc: u64, errors: &mut Vec<String>) -> String { … }\n\nfn is_tokio_idle(frames: &[String]) -> bool { … }\n\n#[cfg(test)]\nmod tests { … }","startLine":1},"summary":{"lines":67,"elidedSpans":18,"elidedLines":547},"fileSize":21723,"meta":{"source":{"type":"path","value":"C:\\Users\\decid\\Documents\\projects\\spt-core\\.worktrees\\302-net-worker-stamps\\crates\\spt-net-diag\\src\\stacks\\windows.rs"}}},"isError":false,"timestamp":1789542394531}}
{"type":"message","id":"0bee45fb","parentId":"21697463","timestamp":"2026-09-16T07:06:34.533Z","message":{"role":"toolResult","toolCallId":"call_jzeudKMxOdl7wiPO1CJ7zGgl|fc_0ba31c31d1cf7dc5016aaa3ffa6c2087d293a95557867aae4f","toolName":"read","content":[{"type":"text","text":"[.worktrees/302-net-worker-stamps/crates/spt-net-diag/src/stacks.rs#E9AE]\n1://! Independent OS-thread snapshots; never ask a stalled executor to sample itself.\n2:\n3:#[cfg(all(windows, target_arch = \"x86_64\"))]\n4:mod windows;\n5:#[cfg(all(windows, target_arch = \"x86_64\"))]\n6:pub(crate) use windows::StackSampler;\n7:\n8:#[cfg(not(all(windows, target_arch = \"x86_64\")))]\n9:pub(crate) struct StackSampler {\n10:    worker_tids: [u32; 2],\n11:}\n12:\n13:#[cfg(not(all(windows, target_arch = \"x86_64\")))]\n14:impl StackSampler {\n15:    pub(crate) fn new(worker_tids: [u32; 2]) -> std::io::Result<Self> {\n16:        if worker_tids.contains(&0) || worker_tids[0] == worker_tids[1] {\n17:            return Err(std::io::Error::new(\n18:                std::io::ErrorKind::InvalidInput,\n19:                \"two distinct nonzero worker TIDs are required\",\n20:            ));\n21:        }\n22:        Ok(Self { worker_tids })\n23:    }\n24:\n25:    pub(crate) fn capture(&mut self) -> serde_json::Value {\n26:        let started = std::time::Instant::now();\n27:        serde_json::json!({\n28:            \"workers\": self.worker_tids.map(|tid| serde_json::json!({\n29:                \"tid\": tid,\n30:                \"activity\": \"unknown\",\n31:                \"op_id\": null,\n32:                \"frames\": [],\n33:                \"progress_counter\": null,\n34:                \"error\": \"OS-thread stack capture is supported only on Windows x64\"\n35:            })),\n36:            \"capture_duration_ms\": started.elapsed().as_millis() as u64,\n37:            \"perturbation\": {\"backend\": \"unsupported\", \"suspend_duration_us\": 0}\n38:        })\n39:    }\n40:}"}],"details":{"totalLines":40,"displayContent":{"text":"//! Independent OS-thread snapshots; never ask a stalled executor to sample itself.\n\n#[cfg(all(windows, target_arch = \"x86_64\"))]\nmod windows;\n#[cfg(all(windows, target_arch = \"x86_64\"))]\npub(crate) use windows::StackSampler;\n\n#[cfg(not(all(windows, target_arch = \"x86_64\")))]\npub(crate) struct StackSampler {\n    worker_tids: [u32; 2],\n}\n\n#[cfg(not(all(windows, target_arch = \"x86_64\")))]\nimpl StackSampler {\n    pub(crate) fn new(worker_tids: [u32; 2]) -> std::io::Result<Self> {\n        if worker_tids.contains(&0) || worker_tids[0] == worker_tids[1] {\n            return Err(std::io::Error::new(\n                std::io::ErrorKind::InvalidInput,\n                \"two distinct nonzero worker TIDs are required\",\n            ));\n        }\n        Ok(Self { worker_tids })\n    }\n\n    pub(crate) fn capture(&mut self) -> serde_json::Value {\n        let started = std::time::Instant::now();\n        serde_json::json!({\n            \"workers\": self.worker_tids.map(|tid| serde_json::json!({\n                \"tid\": tid,\n                \"activity\": \"unknown\",\n                \"op_id\": null,\n                \"frames\": [],\n                \"progress_counter\": null,\n                \"error\": \"OS-thread stack capture is supported only on Windows x64\"\n            })),\n            \"capture_duration_ms\": started.elapsed().as_millis() as u64,\n            \"perturbation\": {\"backend\": \"unsupported\", \"suspend_duration_us\": 0}\n        })\n    }\n}","startLine":1,"lineNumbers":[1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40]},"fileSize":1432,"meta":{"source":{"type":"path","value":"C:\\Users\\decid\\Documents\\projects\\spt-core\\.worktrees\\302-net-worker-stamps\\crates\\spt-net-diag\\src\\stacks.rs"}}},"isError":false,"timestamp":1789542394532}}
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{"type":"message","id":"c960f2c2","parentId":"e8b91816","timestamp":"2026-09-16T07:06:51.920Z","message":{"role":"toolResult","toolCallId":"call_itSdkJDLjSRP7lOvE7d5sS6Q|fc_0ba31c31d1cf7dc5016aaa4008b79887d2bf4ad21539f76559","toolName":"read","content":[{"type":"text","text":"[.worktrees/302-net-worker-stamps/crates/spt-net-diag/src/stacks/windows.rs#08FB]\n8:use std::{\n9:    cell::Cell,\n10:    ffi::c_void,\n11:    io,\n12:    mem::{size_of, zeroed},\n13:    os::windows::ffi::OsStrExt,\n14:    ptr::{self, null_mut},\n15:    sync::Mutex,\n16:    time::Instant,\n17:};\n18:use windows_sys::Win32::{\n19:    Foundation::{\n20:        CloseHandle, DuplicateHandle, GetLastError, SetLastError, DUPLICATE_SAME_ACCESS, HANDLE,\n21:    },\n22:    System::{\n23:        Diagnostics::Debug::{\n24:            AddrModeFlat, GetThreadContext, ReadProcessMemory, StackWalk64, SymCleanup,\n25:            SymFromAddr, SymFunctionTableAccess64, SymGetModuleBase64, SymGetModuleInfo64,\n26:            SymGetOptions, SymInitializeW, SymSetOptions, CONTEXT, CONTEXT_FULL_AMD64,\n27:            IMAGEHLP_MODULE64, STACKFRAME64, SYMBOL_INFO, SYMBOL_INFO_PACKAGE,\n28:            SYMOPT_DEFERRED_LOADS, SYMOPT_FAIL_CRITICAL_ERRORS, SYMOPT_IGNORE_NT_SYMPATH,\n29:            SYMOPT_NO_PROMPTS, SYMOPT_UNDNAME,\n30:        },\n31:        Memory::{VirtualQuery, MEMORY_BASIC_INFORMATION, MEM_COMMIT, MEM_IMAGE, PAGE_GUARD},\n32:        Threading::{\n33:            GetCurrentProcess, GetCurrentProcessId, GetCurrentThreadId, GetProcessIdOfThread,\n34:            OpenThread, ResumeThread, SuspendThread, THREAD_GET_CONTEXT, THREAD_QUERY_INFORMATION,\n35:            THREAD_SUSPEND_RESUME,\n36:        },\n37:    },\n38:};\n…\n61:struct Worker {\n62:    tid: u32,\n63:    handle: Handle,\n64:    context: AlignedContext,\n65:    bytes: Vec<u8>,\n66:    start: u64,\n67:    len: usize,\n68:    suspended_us: u64,\n69:    previous_suspend_count: Option<u32>,\n70:    copy_error: Option<(&'static str, u32)>,\n71:    resume_error: Option<u32>,\n72:}\n…\n74:pub(crate) struct StackSampler {\n75:    workers: [Worker; 2],\n76:    process: Handle,\n77:}\n…\n79:impl StackSampler {\n80:    pub(crate) fn new(worker_tids: [u32; 2]) -> io::Result<Self> {\n81:        if worker_tids.contains(&0) || worker_tids[0] == worker_tids[1] {\n82:            return Err(io::Error::new(\n83:                io::ErrorKind::InvalidInput,\n84:                \"two distinct nonzero worker TIDs are required\",\n85:            ));\n86:        }\n87:        let workers = [Worker::new(worker_tids[0])?, Worker::new(worker_tids[1])?];\n88:        let mut process = null_mut();\n89:        unsafe {\n90:            let current = GetCurrentProcess();\n91:            if DuplicateHandle(\n92:                current,\n93:                current,\n94:                current,\n95:                &mut process,\n96:                0,\n97:                0,\n98:                DUPLICATE_SAME_ACCESS,\n99:            ) == 0\n100:            {\n101:                return Err(io::Error::last_os_error());\n102:            }\n103:        }\n104:        let process = Handle(process);\n105:        // A unique owned handle gives this sampler its own DbgHelp symbol session.\n106:        // Explicit local search path excludes inherited symbol-server URLs. Eager\n107:        // loading keeps the initial PDB parse outside the timed stale capture.\n108:        let exe = std::env::current_exe()?;\n109:        let directory = exe\n110:            .parent()\n111:            .ok_or_else(|| io::Error::other(\"executable has no directory\"))?;\n112:        let path: Vec<u16> = directory.as_os_str().encode_wide().chain(Some(0)).collect();\n113:        let _lock = DBGHELP.lock().unwrap_or_else(|e| e.into_inner());\n114:        unsafe {\n115:            let old = SymGetOptions();\n116:            SymSetOptions(\n117:                (old | SYMOPT_UNDNAME\n118:                    | SYMOPT_FAIL_CRITICAL_ERRORS\n119:                    | SYMOPT_NO_PROMPTS\n120:                    | SYMOPT_IGNORE_NT_SYMPATH)\n121:                    & !SYMOPT_DEFERRED_LOADS,\n122:            );\n123:            let initialized = SymInitializeW(process.0, path.as_ptr(), 1);\n124:            let error = GetLastError();\n125:            SymSetOptions(old);\n126:            if initialized == 0 {\n127:                return Err(io::Error::from_raw_os_error(error as i32));\n128:            }\n129:        }\n130:        Ok(Self { workers, process })\n131:    }\n132:\n133:    pub(crate) fn capture(&mut self) -> Value {\n134:        let started = Instant::now();\n135:        // No DbgHelp lock is held here: a suspended worker may itself own it.\n136:        for worker in &mut self.workers {\n137:            worker.copy_stack(self.process.0);\n138:        }\n139:        let copy_duration_us = micros(started);\n140:        let lock_started = Instant::now();\n141:        let lock = DBGHELP.lock().unwrap_or_else(|e| e.into_inner());\n142:        let symbol_lock_wait_us = micros(lock_started);\n143:        let workers: Vec<Value> = self\n144:            .workers\n145:            .iter_mut()\n146:            .map(|worker| worker.symbolize(self.process.0))\n147:            .collect();\n148:        drop(lock);\n149:        let suspend_duration_us: u64 = self.workers.iter().map(|w| w.suspended_us).sum();\n150:        json!({\n151:            \"workers\": workers,\n152:            \"capture_duration_ms\": started.elapsed().as_millis() as u64,\n153:            \"perturbation\": {\n154:                \"backend\": \"windows-x64-copied-stack\",\n155:                \"suspend_duration_us\": suspend_duration_us,\n156:                \"suspend_duration_is_upper_bound\": true,\n157:                \"stack_copy_phase_us\": copy_duration_us,\n158:                \"symbol_lock_wait_us\": symbol_lock_wait_us,\n159:                \"stack_buffer_bytes_per_worker\": STACK_BYTES,\n160:                \"frame_limit\": MAX_FRAMES\n161:            }\n162:        })\n163:    }\n164:}\n…\n166:impl Drop for StackSampler {\n167:    fn drop(&mut self) {\n168:        let _lock = DBGHELP.lock().unwrap_or_else(|e| e.into_inner());\n169:        unsafe {\n170:            SymCleanup(self.process.0);\n171:        }\n172:    }\n173:}\n…\n181:struct ResumeGuard {\n182:    handle: HANDLE,\n183:    armed: bool,\n184:}\n185:impl ResumeGuard {\n186:    fn resume(&mut self) -> Option<u32> {\n187:        if unsafe { ResumeThread(self.handle) } == u32::MAX {\n188:            Some(unsafe { GetLastError() })\n189:        } else {\n190:            self.armed = false;\n191:            None\n192:        }\n193:    }\n194:}\n195:impl Drop for ResumeGuard {\n196:    fn drop(&mut self) {\n197:        if self.armed {\n198:            unsafe {\n199:                ResumeThread(self.handle);\n200:            }\n201:        }\n202:    }\n203:}\n…\n205:impl Worker {\n206:    fn new(tid: u32) -> io::Result<Self> {\n207:        if tid == unsafe { GetCurrentThreadId() } {\n208:            return Err(io::Error::new(\n209:                io::ErrorKind::InvalidInput,\n210:                \"stack sampler cannot suspend its own thread\",\n211:            ));\n212:        }\n213:        let raw = unsafe {\n214:            OpenThread(\n215:                THREAD_GET_CONTEXT | THREAD_SUSPEND_RESUME | THREAD_QUERY_INFORMATION,\n216:                0,\n217:                tid,\n218:            )\n219:        };\n220:        if raw.is_null() {\n221:            return Err(io::Error::last_os_error());\n222:        }\n223:        let handle = Handle(raw);\n224:        if unsafe { GetProcessIdOfThread(raw) } != unsafe { GetCurrentProcessId() } {\n225:            return Err(io::Error::new(\n226:                io::ErrorKind::InvalidInput,\n227:                \"worker TID does not belong to this process\",\n228:            ));\n229:        }\n230:        let mut bytes = vec![0; STACK_BYTES];\n231:        // Commit destination pages before suspending any worker, including when\n232:        // the allocator supplied demand-zero pages.\n233:        for offset in (0..STACK_BYTES).step_by(4096) {\n234:            unsafe {\n235:                ptr::write_volatile(bytes.as_mut_ptr().add(offset), 0);\n236:            }\n237:        }\n238:        Ok(Self {\n239:            tid,\n240:            handle,\n241:            context: AlignedContext(unsafe { zeroed() }),\n242:            bytes,\n243:            start: 0,\n244:            len: 0,\n245:            suspended_us: 0,\n246:            previous_suspend_count: None,\n247:            copy_error: None,\n248:            resume_error: None,\n249:        })\n250:    }\n251:\n252:    fn copy_stack(&mut self, process: HANDLE) {\n253:        self.len = 0;\n254:        self.start = 0;\n255:        self.suspended_us = 0;\n256:        self.previous_suspend_count = None;\n257:        self.copy_error = None;\n258:        self.resume_error = None;\n259:        self.context.0 = unsafe { zeroed() };\n260:        self.context.0.ContextFlags = CONTEXT_FULL_AMD64;\n261:        if self.tid == unsafe { GetCurrentThreadId() } {\n262:            self.copy_error = Some((\"refusing self-suspend\", 0));\n263:            return;\n264:        }\n265:        let began = Instant::now();\n266:        let previous = unsafe { SuspendThread(self.handle.0) };\n267:        if previous == u32::MAX {\n268:            self.copy_error = Some((\"SuspendThread\", unsafe { GetLastError() }));\n269:            return;\n270:        }\n271:        let mut resume = ResumeGuard {\n272:            handle: self.handle.0,\n273:            armed: true,\n274:        };\n275:        self.previous_suspend_count = Some(previous);\n276:        // From here to resume: fixed-size values, bounded memory copy, kernel\n277:        // APIs and QPC only. No allocation, formatting, logging, or mutexes.\n278:        self.copy_error = unsafe { self.copy_suspended(process) }.err();\n279:        self.resume_error = resume.resume();\n280:        drop(resume);\n281:        self.suspended_us = micros(began);\n282:    }\n283:\n284:    unsafe fn copy_suspended(&mut self, process: HANDLE) -> Result<(), (&'static str, u32)> {\n285:        unsafe {\n286:            if GetThreadContext(self.handle.0, &mut self.context.0) == 0 {\n287:                return Err((\"GetThreadContext\", GetLastError()));\n288:            }\n289:            self.start = self.context.0.Rsp;\n290:            let mut region: MEMORY_BASIC_INFORMATION = zeroed();\n291:            if VirtualQuery(\n292:                self.start as *const c_void,\n293:                &mut region,\n294:                size_of::<MEMORY_BASIC_INFORMATION>(),\n295:            ) == 0\n296:            {\n297:                return Err((\"VirtualQuery(stack)\", GetLastError()));\n298:            }\n299:            if region.State != MEM_COMMIT || region.Protect & PAGE_GUARD != 0 {\n300:                return Err((\"stack is not committed readable memory\", 0));\n301:            }\n302:            let Some(end) = (region.BaseAddress as usize).checked_add(region.RegionSize) else {\n303:                return Err((\"stack region address overflow\", 0));\n304:            };\n305:            let Some(length) = end.checked_sub(self.start as usize) else {\n306:                return Err((\"invalid stack extent\", 0));\n307:            };\n308:            if length == 0 || length > self.bytes.len() {\n309:                return Err((\"stack exceeds preallocated copy limit\", 0));\n310:            }\n311:            let mut read = 0;\n312:            if ReadProcessMemory(\n313:                process,\n314:                self.start as *const c_void,\n315:                self.bytes.as_mut_ptr().cast(),\n316:                length,\n317:                &mut read,\n318:            ) == 0\n319:            {\n320:                return Err((\"ReadProcessMemory(stack)\", GetLastError()));\n321:            }\n322:            if read != length {\n323:                return Err((\"partial stack copy\", 0));\n324:            }\n325:            self.len = length;\n326:            Ok(())\n327:        }\n328:    }\n329:\n330:    fn symbolize(&mut self, process: HANDLE) -> Value {\n331:        let mut errors = Vec::new();\n332:        if let Some((call, code)) = self.copy_error {\n333:            errors.push(format!(\"{call}: Win32 {code}\"));\n334:        }\n335:        if let Some(code) = self.resume_error {\n336:            errors.push(format!(\"ResumeThread: Win32 {code}; guard retried\"));\n337:        }\n338:        if self.previous_suspend_count.is_some_and(|count| count != 0) {\n339:            errors.push(\"worker was already suspended; original count preserved\".into());\n340:        }\n341:        let mut frames = Vec::new();\n342:        let mut raw_pcs = Vec::new();\n343:        if self.len != 0 {\n344:            self.walk(process, &mut frames, &mut raw_pcs, &mut errors);\n345:        }\n346:        let activity = if errors.is_empty() && is_tokio_idle(&frames) {\n347:            \"idle\"\n348:        } else {\n349:            \"unknown\"\n350:        };\n351:        json!({\n352:            \"tid\": self.tid,\n353:            \"activity\": activity,\n354:            \"op_id\": null,\n355:            \"frames\": frames,\n356:            \"raw_pcs\": raw_pcs,\n357:            \"progress_counter\": null,\n358:            \"error\": if errors.is_empty() { None } else { Some(errors.join(\"; \")) },\n359:            \"suspend_duration_us\": self.suspended_us,\n360:            \"previous_suspend_count\": self.previous_suspend_count,\n361:            \"copied_stack_bytes\": self.len\n362:        })\n363:    }\n364:\n365:    fn walk(\n366:        &mut self,\n367:        process: HANDLE,\n368:        frames: &mut Vec<String>,\n369:        pcs: &mut Vec<String>,\n370:        errors: &mut Vec<String>,\n371:    ) {\n372:        let view = StackView {\n373:            start: self.start,\n374:            len: self.len,\n375:            bytes: self.bytes.as_ptr(),\n376:        };\n377:        let _view = ReadViewGuard::new(&view);\n378:        let captured_pc = self.context.0.Rip;\n379:        let mut frame: STACKFRAME64 = unsafe { zeroed() };\n380:        frame.AddrPC.Offset = self.context.0.Rip;\n381:        frame.AddrStack.Offset = self.context.0.Rsp;\n382:        frame.AddrFrame.Offset = self.context.0.Rbp;\n383:        frame.AddrPC.Mode = AddrModeFlat;\n384:        frame.AddrStack.Mode = AddrModeFlat;\n385:        frame.AddrFrame.Mode = AddrModeFlat;\n386:        let mut previous = (0, 0);\n387:        for index in 0..MAX_FRAMES {\n388:            unsafe {\n389:                SetLastError(0);\n390:            }\n391:            let walked = unsafe {\n392:                StackWalk64(\n393:                    IMAGE_FILE_MACHINE_AMD64,\n394:                    process,\n395:                    self.handle.0,\n396:                    &mut frame,\n397:                    (&mut self.context.0 as *mut CONTEXT).cast(),\n398:                    Some(read_snapshot),\n399:                    Some(SymFunctionTableAccess64),\n400:                    Some(SymGetModuleBase64),\n401:                    None,\n402:                )\n403:            };\n404:            if walked == 0 {\n405:                let code = unsafe { GetLastError() };\n406:                errors.push(format!(\n407:                    \"StackWalk64 stopped before a terminal frame: Win32 {code}\"\n408:                ));\n409:                if index == 0 {\n410:                    // Preserve the real captured PC even when the first unwind fails.\n411:                    pcs.push(format!(\"0x{captured_pc:016x}\"));\n412:                    frames.push(symbolize_pc(process, captured_pc, errors));\n413:                }\n414:                return;\n415:            }\n416:            let pc = frame.AddrPC.Offset;\n417:            if pc == 0 {\n418:                return;\n419:            }\n420:            let position = (pc, frame.AddrStack.Offset);\n421:            if position == previous {\n422:                errors.push(\"StackWalk64 made no progress\".into());\n423:                return;\n424:            }\n425:            previous = position;\n426:            pcs.push(format!(\"0x{pc:016x}\"));\n427:            frames.push(symbolize_pc(process, pc, errors));\n428:            if frame.AddrReturn.Offset == 0 {\n429:                return;\n430:            }\n431:        }\n432:        errors.push(\"stack frame limit reached\".into());\n433:    }\n434:}\n…\n436:struct StackView {\n437:    start: u64,\n438:    len: usize,\n439:    bytes: *const u8,\n440:}\n…\n445:impl ReadViewGuard {\n446:    fn new(view: &StackView) -> Self {\n447:        Self(READ_VIEW.replace(view))\n448:    }\n449:}\n450:impl Drop for ReadViewGuard {\n451:    fn drop(&mut self) {\n452:        READ_VIEW.set(self.0);\n453:    }\n454:}\n…\n456:unsafe extern \"system\" fn read_snapshot(\n457:    process: HANDLE,\n458:    address: u64,\n459:    destination: *mut c_void,\n460:    size: u32,\n461:    read: *mut u32,\n462:) -> i32 {\n463:    unsafe {\n464:        if !read.is_null() {\n465:            *read = 0;\n466:        }\n467:        let view = READ_VIEW.get();\n468:        if view.is_null() || destination.is_null() {\n469:            return 0;\n470:        }\n471:        let view = &*view;\n472:        if let Some(offset) = address.checked_sub(view.start) {\n473:            if offset <= view.len as u64 && size as u64 <= view.len as u64 - offset {\n474:                ptr::copy_nonoverlapping(\n475:                    view.bytes.add(offset as usize),\n476:                    destination.cast::<u8>(),\n477:                    size as usize,\n478:                );\n479:                if !read.is_null() {\n480:                    *read = size;\n481:                }\n482:                return 1;\n483:            }\n484:        }\n485:        // Never fall back to the now-running worker's stack/heap. Only image\n486:        // mappings may supply live code and unwind metadata outside our copy.\n487:        let mut region: MEMORY_BASIC_INFORMATION = zeroed();\n488:        if VirtualQuery(\n489:            address as *const c_void,\n490:            &mut region,\n491:            size_of::<MEMORY_BASIC_INFORMATION>(),\n492:        ) == 0\n493:            || region.Type != MEM_IMAGE\n494:        {\n495:            return 0;\n496:        }\n497:        let mut actual = 0;\n498:        let success = ReadProcessMemory(\n499:            process,\n500:            address as *const c_void,\n501:            destination,\n502:            size as usize,\n503:            &mut actual,\n504:        );\n505:        if !read.is_null() {\n506:            *read = actual as u32;\n507:        }\n508:        success\n509:    }\n510:}\n…\n512:fn symbolize_pc(process: HANDLE, pc: u64, errors: &mut Vec<String>) -> String {\n513:    let mut package: SYMBOL_INFO_PACKAGE = unsafe { zeroed() };\n514:    package.si.SizeOfStruct = size_of::<SYMBOL_INFO>() as u32;\n515:    package.si.MaxNameLen = 2000;\n516:    let mut displacement = 0;\n517:    if unsafe { SymFromAddr(process, pc, &mut displacement, &mut package.si) } == 0 {\n518:        let code = unsafe { GetLastError() };\n519:        errors.push(format!(\"SymFromAddr(0x{pc:x}): Win32 {code}\"));\n520:        return format!(\"0x{pc:016x} (symbol unavailable)\");\n521:    }\n522:    if package.si.NameLen >= 1999 {\n523:        errors.push(format!(\"symbol name truncated at 0x{pc:x}\"));\n524:    }\n525:    // SYMBOL_INFO's variable-length name continues into the package's storage.\n526:    let name = unsafe {\n527:        std::slice::from_raw_parts(\n528:            package.si.Name.as_ptr().cast::<u8>(),\n529:            (package.si.NameLen as usize).min(1999),\n530:        )\n531:    };\n532:    let mut module: IMAGEHLP_MODULE64 = unsafe { zeroed() };\n533:    module.SizeOfStruct = size_of::<IMAGEHLP_MODULE64>() as u32;\n534:    let module_name = if unsafe { SymGetModuleInfo64(process, pc, &mut module) } != 0 {\n535:        let bytes: Vec<u8> = module\n536:            .ModuleName\n537:            .iter()\n538:            .take_while(|&&c| c != 0)\n539:            .map(|&c| c as u8)\n540:            .collect();\n541:        String::from_utf8_lossy(&bytes).into_owned()\n542:    } else {\n543:        let code = unsafe { GetLastError() };\n544:        errors.push(format!(\"SymGetModuleInfo64(0x{pc:x}): Win32 {code}\"));\n545:        format!(\"module@0x{:x}\", package.si.ModBase)\n546:    };\n547:    format!(\n548:        \"{module_name}!{}+0x{displacement:x} [0x{pc:016x}]\",\n549:        String::from_utf8_lossy(name)\n550:    )\n551:}\n…\n553:fn is_tokio_idle(frames: &[String]) -> bool {\n554:    // Require an uninterrupted known wait chain into actual Tokio park code.\n555:    // A user waker can run synchronously beneath reactor park and itself block;\n556:    // an arbitrary intervening frame therefore prevents the idle verdict.\n557:    let Some(first) = frames.first() else {\n558:        return false;\n559:    };\n560:    if ![\n561:        \"!NtWaitForSingleObject\",\n562:        \"!NtWaitForMultipleObjects\",\n563:        \"!NtWaitForAlertByThreadId\",\n564:        \"!NtRemoveIoCompletion\",\n565:    ]\n566:    .iter()\n567:    .any(|symbol| first.contains(symbol))\n568:    {\n569:        return false;\n570:    }\n571:    for frame in frames.iter().skip(1) {\n572:        if [\n573:            \"tokio::runtime::park::Inner::park\",\n574:            \"tokio::runtime::io::driver::Driver::park\",\n575:        ]\n576:        .iter()\n577:        .any(|symbol| frame.contains(symbol))\n578:        {\n579:            return true;\n580:        }\n581:        if ![\n582:            \"!WaitForSingleObject\",\n583:            \"!WaitForMultipleObjects\",\n584:            \"!WaitOnAddress\",\n585:            \"!RtlWaitOnAddress\",\n586:            \"!RtlSleepConditionVariable\",\n587:            \"!SleepConditionVariable\",\n588:            \"!GetQueuedCompletionStatus\",\n589:            \"std::sys::sync::condvar::windows::Condvar::wait\",\n590:            \"std::sys::sync::thread_parking::windows::Parker::park\",\n591:            \"std::sync::poison::condvar::Condvar::wait\",\n592:            \"mio::sys::windows::selector::Selector::select\",\n593:            \"mio::sys::windows::iocp::CompletionPort::get\",\n594:            \"mio::poll::Poll::poll\",\n595:        ]\n596:        .iter()\n597:        .any(|symbol| frame.contains(symbol))\n598:        {\n599:            return false;\n600:        }\n601:    }\n602:    false\n603:}\n…\n605:#[cfg(test)]\n606:mod tests {\n607:    use super::is_tokio_idle;\n608:\n609:    #[test]\n610:    fn generic_wait_and_active_reactor_do_not_prove_idle() {\n611:        assert!(!is_tokio_idle(&[\"ntdll!NtWaitForSingleObject\".into()]));\n612:        assert!(!is_tokio_idle(&[\n613:            \"ntdll!NtWaitForSingleObject\".into(),\n614:            \"spt!tokio::runtime::io::driver::Driver::turn\".into(),\n615:        ]));\n616:        assert!(is_tokio_idle(&[\n617:            \"ntdll!NtRemoveIoCompletionEx\".into(),\n618:            \"spt!tokio::runtime::io::driver::Driver::park\".into(),\n619:        ]));\n620:        assert!(!is_tokio_idle(&[\n621:            \"spt!application_callback\".into(),\n622:            \"spt!tokio::runtime::io::driver::Driver::park\".into(),\n623:        ]));\n624:        assert!(!is_tokio_idle(&[\n625:            \"ntdll!NtWaitForSingleObject\".into(),\n626:            \"spt!application_blocking_waker\".into(),\n627:            \"spt!tokio::runtime::io::driver::Driver::park\".into(),\n628:        ]));\n629:    }\n630:}"}],"details":{"displayContent":{"text":"use std::{\n    cell::Cell,\n    ffi::c_void,\n    io,\n    mem::{size_of, zeroed},\n    os::windows::ffi::OsStrExt,\n    ptr::{self, null_mut},\n    sync::Mutex,\n    time::Instant,\n};\nuse windows_sys::Win32::{\n    Foundation::{\n        CloseHandle, DuplicateHandle, GetLastError, SetLastError, DUPLICATE_SAME_ACCESS, HANDLE,\n    },\n    System::{\n        Diagnostics::Debug::{\n            AddrModeFlat, GetThreadContext, ReadProcessMemory, StackWalk64, SymCleanup,\n            SymFromAddr, SymFunctionTableAccess64, SymGetModuleBase64, SymGetModuleInfo64,\n            SymGetOptions, SymInitializeW, SymSetOptions, CONTEXT, CONTEXT_FULL_AMD64,\n            IMAGEHLP_MODULE64, STACKFRAME64, SYMBOL_INFO, SYMBOL_INFO_PACKAGE,\n            SYMOPT_DEFERRED_LOADS, SYMOPT_FAIL_CRITICAL_ERRORS, SYMOPT_IGNORE_NT_SYMPATH,\n            SYMOPT_NO_PROMPTS, SYMOPT_UNDNAME,\n        },\n        Memory::{VirtualQuery, MEMORY_BASIC_INFORMATION, MEM_COMMIT, MEM_IMAGE, PAGE_GUARD},\n        Threading::{\n            GetCurrentProcess, GetCurrentProcessId, GetCurrentThreadId, GetProcessIdOfThread,\n            OpenThread, ResumeThread, SuspendThread, THREAD_GET_CONTEXT, THREAD_QUERY_INFORMATION,\n            THREAD_SUSPEND_RESUME,\n        },\n    },\n};\n…\nstruct Worker {\n    tid: u32,\n    handle: Handle,\n    context: AlignedContext,\n    bytes: Vec<u8>,\n    start: u64,\n    len: usize,\n    suspended_us: u64,\n    previous_suspend_count: Option<u32>,\n    copy_error: Option<(&'static str, u32)>,\n    resume_error: Option<u32>,\n}\n…\npub(crate) struct StackSampler {\n    workers: [Worker; 2],\n    process: Handle,\n}\n…\nimpl StackSampler {\n    pub(crate) fn new(worker_tids: [u32; 2]) -> io::Result<Self> {\n        if worker_tids.contains(&0) || worker_tids[0] == worker_tids[1] {\n            return Err(io::Error::new(\n                io::ErrorKind::InvalidInput,\n                \"two distinct nonzero worker TIDs are required\",\n            ));\n        }\n        let workers = [Worker::new(worker_tids[0])?, Worker::new(worker_tids[1])?];\n        let mut process = null_mut();\n        unsafe {\n            let current = GetCurrentProcess();\n            if DuplicateHandle(\n                current,\n                current,\n                current,\n                &mut process,\n                0,\n                0,\n                DUPLICATE_SAME_ACCESS,\n            ) == 0\n            {\n                return Err(io::Error::last_os_error());\n            }\n        }\n        let process = Handle(process);\n        // A unique owned handle gives this sampler its own DbgHelp symbol session.\n        // Explicit local search path excludes inherited symbol-server URLs. Eager\n        // loading keeps the initial PDB parse outside the timed stale capture.\n        let exe = std::env::current_exe()?;\n        let directory = exe\n            .parent()\n            .ok_or_else(|| io::Error::other(\"executable has no directory\"))?;\n        let path: Vec<u16> = directory.as_os_str().encode_wide().chain(Some(0)).collect();\n        let _lock = DBGHELP.lock().unwrap_or_else(|e| e.into_inner());\n        unsafe {\n            let old = SymGetOptions();\n            SymSetOptions(\n                (old | SYMOPT_UNDNAME\n                    | SYMOPT_FAIL_CRITICAL_ERRORS\n                    | SYMOPT_NO_PROMPTS\n                    | SYMOPT_IGNORE_NT_SYMPATH)\n                    & !SYMOPT_DEFERRED_LOADS,\n            );\n            let initialized = SymInitializeW(process.0, path.as_ptr(), 1);\n            let error = GetLastError();\n            SymSetOptions(old);\n            if initialized == 0 {\n                return Err(io::Error::from_raw_os_error(error as i32));\n            }\n        }\n        Ok(Self { workers, process })\n    }\n\n    pub(crate) fn capture(&mut self) -> Value {\n        let started = Instant::now();\n        // No DbgHelp lock is held here: a suspended worker may itself own it.\n        for worker in &mut self.workers {\n            worker.copy_stack(self.process.0);\n        }\n        let copy_duration_us = micros(started);\n        let lock_started = Instant::now();\n        let lock = DBGHELP.lock().unwrap_or_else(|e| e.into_inner());\n        let symbol_lock_wait_us = micros(lock_started);\n        let workers: Vec<Value> = self\n            .workers\n            .iter_mut()\n            .map(|worker| worker.symbolize(self.process.0))\n            .collect();\n        drop(lock);\n        let suspend_duration_us: u64 = self.workers.iter().map(|w| w.suspended_us).sum();\n        json!({\n            \"workers\": workers,\n            \"capture_duration_ms\": started.elapsed().as_millis() as u64,\n            \"perturbation\": {\n                \"backend\": \"windows-x64-copied-stack\",\n                \"suspend_duration_us\": suspend_duration_us,\n                \"suspend_duration_is_upper_bound\": true,\n                \"stack_copy_phase_us\": copy_duration_us,\n                \"symbol_lock_wait_us\": symbol_lock_wait_us,\n                \"stack_buffer_bytes_per_worker\": STACK_BYTES,\n                \"frame_limit\": MAX_FRAMES\n            }\n        })\n    }\n}\n…\nimpl Drop for StackSampler {\n    fn drop(&mut self) {\n        let _lock = DBGHELP.lock().unwrap_or_else(|e| e.into_inner());\n        unsafe {\n            SymCleanup(self.process.0);\n        }\n    }\n}\n…\nstruct ResumeGuard {\n    handle: HANDLE,\n    armed: bool,\n}\nimpl ResumeGuard {\n    fn resume(&mut self) -> Option<u32> {\n        if unsafe { ResumeThread(self.handle) } == u32::MAX {\n            Some(unsafe { GetLastError() })\n        } else {\n            self.armed = false;\n            None\n        }\n    }\n}\nimpl Drop for ResumeGuard {\n    fn drop(&mut self) {\n        if self.armed {\n            unsafe {\n                ResumeThread(self.handle);\n            }\n        }\n    }\n}\n…\nimpl Worker {\n    fn new(tid: u32) -> io::Result<Self> {\n        if tid == unsafe { GetCurrentThreadId() } {\n            return Err(io::Error::new(\n                io::ErrorKind::InvalidInput,\n                \"stack sampler cannot suspend its own thread\",\n            ));\n        }\n        let raw = unsafe {\n            OpenThread(\n                THREAD_GET_CONTEXT | THREAD_SUSPEND_RESUME | THREAD_QUERY_INFORMATION,\n                0,\n                tid,\n            )\n        };\n        if raw.is_null() {\n            return Err(io::Error::last_os_error());\n        }\n        let handle = Handle(raw);\n        if unsafe { GetProcessIdOfThread(raw) } != unsafe { GetCurrentProcessId() } {\n            return Err(io::Error::new(\n                io::ErrorKind::InvalidInput,\n                \"worker TID does not belong to this process\",\n            ));\n        }\n        let mut bytes = vec![0; STACK_BYTES];\n        // Commit destination pages before suspending any worker, including when\n        // the allocator supplied demand-zero pages.\n        for offset in (0..STACK_BYTES).step_by(4096) {\n            unsafe {\n                ptr::write_volatile(bytes.as_mut_ptr().add(offset), 0);\n            }\n        }\n        Ok(Self {\n            tid,\n            handle,\n            context: AlignedContext(unsafe { zeroed() }),\n            bytes,\n            start: 0,\n            len: 0,\n            suspended_us: 0,\n            previous_suspend_count: None,\n            copy_error: None,\n            resume_error: None,\n        })\n    }\n\n    fn copy_stack(&mut self, process: HANDLE) {\n        self.len = 0;\n        self.start = 0;\n        self.suspended_us = 0;\n        self.previous_suspend_count = None;\n        self.copy_error = None;\n        self.resume_error = None;\n        self.context.0 = unsafe { zeroed() };\n        self.context.0.ContextFlags = CONTEXT_FULL_AMD64;\n        if self.tid == unsafe { GetCurrentThreadId() } {\n            self.copy_error = Some((\"refusing self-suspend\", 0));\n            return;\n        }\n        let began = Instant::now();\n        let previous = unsafe { SuspendThread(self.handle.0) };\n        if previous == u32::MAX {\n            self.copy_error = Some((\"SuspendThread\", unsafe { GetLastError() }));\n            return;\n        }\n        let mut resume = ResumeGuard {\n            handle: self.handle.0,\n            armed: true,\n        };\n        self.previous_suspend_count = Some(previous);\n        // From here to resume: fixed-size values, bounded memory copy, kernel\n        // APIs and QPC only. No allocation, formatting, logging, or mutexes.\n        self.copy_error = unsafe { self.copy_suspended(process) }.err();\n        self.resume_error = resume.resume();\n        drop(resume);\n        self.suspended_us = micros(began);\n    }\n\n    unsafe fn copy_suspended(&mut self, process: HANDLE) -> Result<(), (&'static str, u32)> {\n        unsafe {\n            if GetThreadContext(self.handle.0, &mut self.context.0) == 0 {\n                return Err((\"GetThreadContext\", GetLastError()));\n            }\n            self.start = self.context.0.Rsp;\n            let mut region: MEMORY_BASIC_INFORMATION = zeroed();\n            if VirtualQuery(\n                self.start as *const c_void,\n                &mut region,\n                size_of::<MEMORY_BASIC_INFORMATION>(),\n            ) == 0\n            {\n                return Err((\"VirtualQuery(stack)\", GetLastError()));\n            }\n            if region.State != MEM_COMMIT || region.Protect & PAGE_GUARD != 0 {\n                return Err((\"stack is not committed readable memory\", 0));\n            }\n            let Some(end) = (region.BaseAddress as usize).checked_add(region.RegionSize) else {\n                return Err((\"stack region address overflow\", 0));\n            };\n            let Some(length) = end.checked_sub(self.start as usize) else {\n                return Err((\"invalid stack extent\", 0));\n            };\n            if length == 0 || length > self.bytes.len() {\n                return Err((\"stack exceeds preallocated copy limit\", 0));\n            }\n            let mut read = 0;\n            if ReadProcessMemory(\n                process,\n                self.start as *const c_void,\n                self.bytes.as_mut_ptr().cast(),\n                length,\n                &mut read,\n            ) == 0\n            {\n                return Err((\"ReadProcessMemory(stack)\", GetLastError()));\n            }\n            if read != length {\n                return Err((\"partial stack copy\", 0));\n            }\n            self.len = length;\n            Ok(())\n        }\n    }\n\n    fn symbolize(&mut self, process: HANDLE) -> Value {\n        let mut errors = Vec::new();\n        if let Some((call, code)) = self.copy_error {\n            errors.push(format!(\"{call}: Win32 {code}\"));\n        }\n        if let Some(code) = self.resume_error {\n            errors.push(format!(\"ResumeThread: Win32 {code}; guard retried\"));\n        }\n        if self.previous_suspend_count.is_some_and(|count| count != 0) {\n            errors.push(\"worker was already suspended; original count preserved\".into());\n        }\n        let mut frames = Vec::new();\n        let mut raw_pcs = Vec::new();\n        if self.len != 0 {\n            self.walk(process, &mut frames, &mut raw_pcs, &mut errors);\n        }\n        let activity = if errors.is_empty() && is_tokio_idle(&frames) {\n            \"idle\"\n        } else {\n            \"unknown\"\n        };\n        json!({\n            \"tid\": self.tid,\n            \"activity\": activity,\n            \"op_id\": null,\n            \"frames\": frames,\n            \"raw_pcs\": raw_pcs,\n            \"progress_counter\": null,\n            \"error\": if errors.is_empty() { None } else { Some(errors.join(\"; \")) },\n            \"suspend_duration_us\": self.suspended_us,\n            \"previous_suspend_count\": self.previous_suspend_count,\n            \"copied_stack_bytes\": self.len\n        })\n    }\n\n    fn walk(\n        &mut self,\n        process: HANDLE,\n        frames: &mut Vec<String>,\n        pcs: &mut Vec<String>,\n        errors: &mut Vec<String>,\n    ) {\n        let view = StackView {\n            start: self.start,\n            len: self.len,\n            bytes: self.bytes.as_ptr(),\n        };\n        let _view = ReadViewGuard::new(&view);\n        let captured_pc = self.context.0.Rip;\n        let mut frame: STACKFRAME64 = unsafe { zeroed() };\n        frame.AddrPC.Offset = self.context.0.Rip;\n        frame.AddrStack.Offset = self.context.0.Rsp;\n        frame.AddrFrame.Offset = self.context.0.Rbp;\n        frame.AddrPC.Mode = AddrModeFlat;\n        frame.AddrStack.Mode = AddrModeFlat;\n        frame.AddrFrame.Mode = AddrModeFlat;\n        let mut previous = (0, 0);\n        for index in 0..MAX_FRAMES {\n            unsafe {\n                SetLastError(0);\n            }\n            let walked = unsafe {\n                StackWalk64(\n                    IMAGE_FILE_MACHINE_AMD64,\n                    process,\n                    self.handle.0,\n                    &mut frame,\n                    (&mut self.context.0 as *mut CONTEXT).cast(),\n                    Some(read_snapshot),\n                    Some(SymFunctionTableAccess64),\n                    Some(SymGetModuleBase64),\n                    None,\n                )\n            };\n            if walked == 0 {\n                let code = unsafe { GetLastError() };\n                errors.push(format!(\n                    \"StackWalk64 stopped before a terminal frame: Win32 {code}\"\n                ));\n                if index == 0 {\n                    // Preserve the real captured PC even when the first unwind fails.\n                    pcs.push(format!(\"0x{captured_pc:016x}\"));\n                    frames.push(symbolize_pc(process, captured_pc, errors));\n                }\n                return;\n            }\n            let pc = frame.AddrPC.Offset;\n            if pc == 0 {\n                return;\n            }\n            let position = (pc, frame.AddrStack.Offset);\n            if position == previous {\n                errors.push(\"StackWalk64 made no progress\".into());\n                return;\n            }\n            previous = position;\n            pcs.push(format!(\"0x{pc:016x}\"));\n            frames.push(symbolize_pc(process, pc, errors));\n            if frame.AddrReturn.Offset == 0 {\n                return;\n            }\n        }\n        errors.push(\"stack frame limit reached\".into());\n    }\n}\n…\nstruct StackView {\n    start: u64,\n    len: usize,\n    bytes: *const u8,\n}\n…\nimpl ReadViewGuard {\n    fn new(view: &StackView) -> Self {\n        Self(READ_VIEW.replace(view))\n    }\n}\nimpl Drop for ReadViewGuard {\n    fn drop(&mut self) {\n        READ_VIEW.set(self.0);\n    }\n}\n…\nunsafe extern \"system\" fn read_snapshot(\n    process: HANDLE,\n    address: u64,\n    destination: *mut c_void,\n    size: u32,\n    read: *mut u32,\n) -> i32 {\n    unsafe {\n        if !read.is_null() {\n            *read = 0;\n        }\n        let view = READ_VIEW.get();\n        if view.is_null() || destination.is_null() {\n            return 0;\n        }\n        let view = &*view;\n        if let Some(offset) = address.checked_sub(view.start) {\n            if offset <= view.len as u64 && size as u64 <= view.len as u64 - offset {\n                ptr::copy_nonoverlapping(\n                    view.bytes.add(offset as usize),\n                    destination.cast::<u8>(),\n                    size as usize,\n                );\n                if !read.is_null() {\n                    *read = size;\n                }\n                return 1;\n            }\n        }\n        // Never fall back to the now-running worker's stack/heap. Only image\n        // mappings may supply live code and unwind metadata outside our copy.\n        let mut region: MEMORY_BASIC_INFORMATION = zeroed();\n        if VirtualQuery(\n            address as *const c_void,\n            &mut region,\n            size_of::<MEMORY_BASIC_INFORMATION>(),\n        ) == 0\n            || region.Type != MEM_IMAGE\n        {\n            return 0;\n        }\n        let mut actual = 0;\n        let success = ReadProcessMemory(\n            process,\n            address as *const c_void,\n            destination,\n            size as usize,\n            &mut actual,\n        );\n        if !read.is_null() {\n            *read = actual as u32;\n        }\n        success\n    }\n}\n…\nfn symbolize_pc(process: HANDLE, pc: u64, errors: &mut Vec<String>) -> String {\n    let mut package: SYMBOL_INFO_PACKAGE = unsafe { zeroed() };\n    package.si.SizeOfStruct = size_of::<SYMBOL_INFO>() as u32;\n    package.si.MaxNameLen = 2000;\n    let mut displacement = 0;\n    if unsafe { SymFromAddr(process, pc, &mut displacement, &mut package.si) } == 0 {\n        let code = unsafe { GetLastError() };\n        errors.push(format!(\"SymFromAddr(0x{pc:x}): Win32 {code}\"));\n        return format!(\"0x{pc:016x} (symbol unavailable)\");\n    }\n    if package.si.NameLen >= 1999 {\n        errors.push(format!(\"symbol name truncated at 0x{pc:x}\"));\n    }\n    // SYMBOL_INFO's variable-length name continues into the package's storage.\n    let name = unsafe {\n        std::slice::from_raw_parts(\n            package.si.Name.as_ptr().cast::<u8>(),\n            (package.si.NameLen as usize).min(1999),\n        )\n    };\n    let mut module: IMAGEHLP_MODULE64 = unsafe { zeroed() };\n    module.SizeOfStruct = size_of::<IMAGEHLP_MODULE64>() as u32;\n    let module_name = if unsafe { SymGetModuleInfo64(process, pc, &mut module) } != 0 {\n        let bytes: Vec<u8> = module\n            .ModuleName\n            .iter()\n            .take_while(|&&c| c != 0)\n            .map(|&c| c as u8)\n            .collect();\n        String::from_utf8_lossy(&bytes).into_owned()\n    } else {\n        let code = unsafe { GetLastError() };\n        errors.push(format!(\"SymGetModuleInfo64(0x{pc:x}): Win32 {code}\"));\n        format!(\"module@0x{:x}\", package.si.ModBase)\n    };\n    format!(\n        \"{module_name}!{}+0x{displacement:x} [0x{pc:016x}]\",\n        String::from_utf8_lossy(name)\n    )\n}\n…\nfn is_tokio_idle(frames: &[String]) -> bool {\n    // Require an uninterrupted known wait chain into actual Tokio park code.\n    // A user waker can run synchronously beneath reactor park and itself block;\n    // an arbitrary intervening frame therefore prevents the idle verdict.\n    let Some(first) = frames.first() else {\n        return false;\n    };\n    if ![\n        \"!NtWaitForSingleObject\",\n        \"!NtWaitForMultipleObjects\",\n        \"!NtWaitForAlertByThreadId\",\n        \"!NtRemoveIoCompletion\",\n    ]\n    .iter()\n    .any(|symbol| first.contains(symbol))\n    {\n        return false;\n    }\n    for frame in frames.iter().skip(1) {\n        if [\n            \"tokio::runtime::park::Inner::park\",\n            \"tokio::runtime::io::driver::Driver::park\",\n        ]\n        .iter()\n        .any(|symbol| frame.contains(symbol))\n        {\n            return true;\n        }\n        if ![\n            \"!WaitForSingleObject\",\n            \"!WaitForMultipleObjects\",\n            \"!WaitOnAddress\",\n            \"!RtlWaitOnAddress\",\n            \"!RtlSleepConditionVariable\",\n            \"!SleepConditionVariable\",\n            \"!GetQueuedCompletionStatus\",\n            \"std::sys::sync::condvar::windows::Condvar::wait\",\n            \"std::sys::sync::thread_parking::windows::Parker::park\",\n            \"std::sync::poison::condvar::Condvar::wait\",\n            \"mio::sys::windows::selector::Selector::select\",\n            \"mio::sys::windows::iocp::CompletionPort::get\",\n            \"mio::poll::Poll::poll\",\n        ]\n        .iter()\n        .any(|symbol| frame.contains(symbol))\n        {\n            return false;\n        }\n    }\n    false\n}\n…\n#[cfg(test)]\nmod tests {\n    use super::is_tokio_idle;\n\n    #[test]\n    fn generic_wait_and_active_reactor_do_not_prove_idle() {\n        assert!(!is_tokio_idle(&[\"ntdll!NtWaitForSingleObject\".into()]));\n        assert!(!is_tokio_idle(&[\n            \"ntdll!NtWaitForSingleObject\".into(),\n            \"spt!tokio::runtime::io::driver::Driver::turn\".into(),\n        ]));\n        assert!(is_tokio_idle(&[\n            \"ntdll!NtRemoveIoCompletionEx\".into(),\n            \"spt!tokio::runtime::io::driver::Driver::park\".into(),\n        ]));\n        assert!(!is_tokio_idle(&[\n            \"spt!application_callback\".into(),\n            \"spt!tokio::runtime::io::driver::Driver::park\".into(),\n        ]));\n        assert!(!is_tokio_idle(&[\n            \"ntdll!NtWaitForSingleObject\".into(),\n            \"spt!application_blocking_waker\".into(),\n            \"spt!tokio::runtime::io::driver::Driver::park\".into(),\n        ]));\n    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{"type":"message","id":"a9cddf6c","parentId":"5bb33bf4","timestamp":"2026-09-16T07:07:28.164Z","message":{"role":"toolResult","toolCallId":"call_i45xFL0RN1dWauOknMstbVSW|fc_0ba31c31d1cf7dc5016aaa4030101087d2a5f20fde46ecef59","toolName":"read","content":[{"type":"text","text":"---\nname: diagnosing-bugs\ndescription: Diagnosis loop for hard bugs and performance regressions. Use when the user says \"diagnose\"/\"debug this\", or reports something broken/throwing/failing/slow.\n---\n\n# Diagnosing Bugs\n\nA discipline for hard bugs. Skip phases only when explicitly justified.\n\nWhen exploring the codebase, read `CONTEXT.md` (if it exists) to get a clear mental model of the relevant modules, and check ADRs in the area you're touching.\n\n## Phase 1 — Build a feedback loop\n\n**This is the skill.** Everything else is mechanical. If you have a **tight** pass/fail signal for the bug — one that goes red on _this_ bug — you will find the cause; bisection, hypothesis-testing, and instrumentation all just consume it. If you don't have one, no amount of staring at code will save you.\n\nSpend disproportionate effort here. **Be aggressive. Be creative. Refuse to give up.**\n\n### Ways to construct one — try them in roughly this order\n\n1. **Failing test** at whatever seam reaches the bug — unit, integration, e2e.\n2. **Curl / HTTP script** against a running dev server.\n3. **CLI invocation** with a fixture input, diffing stdout against a known-good snapshot.\n4. **Headless browser script** (Playwright / Puppeteer) — drives the UI, asserts on DOM/console/network.\n5. **Replay a captured trace.** Save a real network request / payload / event log to disk; replay it through the code path in isolation.\n6. **Throwaway harness.** Spin up a minimal subset of the system (one service, mocked deps) that exercises the bug code path with a single function call.\n7. **Property / fuzz loop.** If the bug is \"sometimes wrong output\", run 1000 random inputs and look for the failure mode.\n8. **Bisection harness.** If the bug appeared between two known states (commit, dataset, version), automate \"boot at state X, check, repeat\" so you can `git bisect run` it.\n9. **Differential loop.** Run the same input through old-version vs new-version (or two configs) and diff outputs.\n10. **HITL bash script.** Last resort. If a human must click, drive _them_ with `scripts/hitl-loop.template.sh` so the loop is still structured. Captured output feeds back to you.\n\nBuild the right feedback loop, and the bug is 90% fixed.\n\n### Tighten the loop\n\nTreat the loop as a product. Once you have _a_ loop, **tighten** it:\n\n- Can I make it faster? (Cache setup, skip unrelated init, narrow the test scope.)\n- Can I make the signal sharper? (Assert on the specific symptom, not \"didn't crash\".)\n- Can I make it more deterministic? (Pin time, seed RNG, isolate filesystem, freeze network.)\n\nA 30-second flaky loop is barely better than no loop; a 2-second deterministic one is tight — a debugging superpower.\n\n### Non-deterministic bugs\n\nThe goal is not a clean repro but a **higher reproduction rate**. Loop the trigger 100×, parallelise, add stress, narrow timing windows, inject sleeps. A 50%-flake bug is debuggable; 1% is not — keep raising the rate until it's debuggable.\n\n### When you genuinely cannot build a loop\n\nStop and say so explicitly. List what you tried. Ask the user for: (a) access to whatever environment reproduces it, (b) a captured artifact (HAR file, log dump, core dump, screen recording with timestamps), or (c) permission to add temporary production instrumentation. Do **not** proceed to hypothesise without a loop.\n\n### Completion criterion — a tight loop that goes red\n\nPhase 1 is done when the loop is **tight** and **red-capable**: you can name **one command** — a script path, a test invocation, a curl — that you have **already run at least once** (paste the invocation and its output), and that is:\n\n- [ ] **Red-capable** — it drives the actual bug code path and asserts the **user's exact symptom**, so it can go red on this bug and green once fixed. Not \"runs without erroring\" — it must be able to _catch this specific bug_.\n- [ ] **Deterministic** — same verdict every run (flaky bugs: a pinned, high reproduction rate, per above).\n- [ ] **Fast** — seconds, not minutes.\n- [ ] **Agent-runnable** — you can run it unattended; a human in the loop only via `scripts/hitl-loop.template.sh`.\n\nIf you catch yourself reading code to build a theory before this command exists, **stop — jumping straight to a hypothesis is the exact failure this skill prevents.** No red-capable command, no Phase 2.\n\n## Phase 2 — Reproduce + minimise\n\nRun the loop. Watch it go red — the bug appears.\n\nConfirm:\n\n- [ ] The loop produces the failure mode the **user** described — not a different failure that happens to be nearby. Wrong bug = wrong fix.\n- [ ] The failure is reproducible across multiple runs (or, for non-deterministic bugs, reproducible at a high enough rate to debug against).\n- [ ] You have captured the exact symptom (error message, wrong output, slow timing) so later phases can verify the fix actually addresses it.\n\n### Minimise\n\nOnce it's red, shrink the repro to the **smallest scenario that still goes red**. Cut inputs, callers, config, data, and steps **one at a time**, re-running the loop after each cut — keep only what's load-bearing for the failure.\n\nWhy bother: a minimal repro shrinks the hypothesis space in Phase 3 (fewer moving parts left to suspect) and becomes the clean regression test in Phase 5.\n\nDone when **every remaining element is load-bearing** — removing any one of them makes the loop go green.\n\nDo not proceed until you have reproduced **and** minimised.\n\n## Phase 3 — Hypothesise\n\nGenerate **3–5 ranked hypotheses** before testing any of them. Single-hypothesis generation anchors on the first plausible idea.\n\nEach hypothesis must be **falsifiable**: state the prediction it makes.\n\n> Format: \"If <X> is the cause, then <changing Y> will make the bug disappear / <changing Z> will make it worse.\"\n\nIf you cannot state the prediction, the hypothesis is a vibe — discard or sharpen it.\n\n**Show the ranked list to the user before testing.** They often have domain knowledge that re-ranks instantly (\"we just deployed a change to #3\"), or know hypotheses they've already ruled out. Cheap checkpoint, big time saver. Don't block on it — proceed with your ranking if the user is AFK.\n\n## Phase 4 — Instrument\n\nEach probe must map to a specific prediction from Phase 3. **Change one variable at a time.**\n\nTool preference:\n\n1. **Debugger / REPL inspection** if the env supports it. One breakpoint beats ten logs.\n2. **Targeted logs** at the boundaries that distinguish hypotheses.\n3. Never \"log everything and grep\".\n\n**Tag every debug log** with a unique prefix, e.g. `[DEBUG-a4f2]`. Cleanup at the end becomes a single grep. Untagged logs survive; tagged logs die.\n\n**Perf branch.** For performance regressions, logs are usually wrong. Instead: establish a baseline measurement (timing harness, `performance.now()`, profiler, query plan), then bisect. Measure first, fix second.\n\n## Phase 5 — Fix + regression test\n\nWrite the regression test **before the fix** — but only if there is a **correct seam** for it.\n\nA correct seam is one where the test exercises the **real bug pattern** as it occurs at the call site. If the only available seam is too shallow (single-caller test when the bug needs multiple callers, unit test that can't replicate the chain that triggered the bug), a regression test there gives false confidence.\n\n**If no correct seam exists, that itself is the finding.** Note it. The codebase architecture is preventing the bug from being locked down. Flag this for the next phase.\n\nIf a correct seam exists:\n\n1. Turn the minimised repro into a failing test at that seam.\n2. Watch it fail.\n3. Apply the fix.\n4. Watch it pass.\n5. Re-run the Phase 1 feedback loop against the original (un-minimised) scenario.\n\n## Phase 6 — Cleanup + post-mortem\n\nRequired before declaring done:\n\n- [ ] Original repro no longer reproduces (re-run the Phase 1 loop)\n- [ ] Regression test passes (or absence of seam is documented)\n- [ ] All `[DEBUG-...]` instrumentation removed (`grep` the prefix)\n- [ ] Throwaway prototypes deleted (or moved to a clearly-marked debug location)\n- [ ] The hypothesis that turned out correct is stated in the commit / PR message — so the next debugger learns\n\n**Then ask: what would have prevented this bug?** If the answer involves architectural change (no good test seam, tangled callers, hidden coupling) hand off to the `/improve-codebase-architecture` skill with the specifics. Make the recommendation **after** the fix is in, not before — you have more information now than when you started."}],"details":{"resolvedPath":"C:\\Users\\decid\\.agents\\skills\\diagnosing-bugs\\SKILL.md","contentType":"text/markdown","totalLines":134,"displayContent":{"text":"---\r\nname: diagnosing-bugs\r\ndescription: Diagnosis loop for hard bugs and performance regressions. Use when the user says \"diagnose\"/\"debug this\", or reports something broken/throwing/failing/slow.\r\n---\r\n\r\n# Diagnosing Bugs\r\n\r\nA discipline for hard bugs. Skip phases only when explicitly justified.\r\n\r\nWhen exploring the codebase, read `CONTEXT.md` (if it exists) to get a clear mental model of the relevant modules, and check ADRs in the area you're touching.\r\n\r\n## Phase 1 — Build a feedback loop\r\n\r\n**This is the skill.** Everything else is mechanical. If you have a **tight** pass/fail signal for the bug — one that goes red on _this_ bug — you will find the cause; bisection, hypothesis-testing, and instrumentation all just consume it. If you don't have one, no amount of staring at code will save you.\r\n\r\nSpend disproportionate effort here. **Be aggressive. Be creative. Refuse to give up.**\r\n\r\n### Ways to construct one — try them in roughly this order\r\n\r\n1. **Failing test** at whatever seam reaches the bug — unit, integration, e2e.\r\n2. **Curl / HTTP script** against a running dev server.\r\n3. **CLI invocation** with a fixture input, diffing stdout against a known-good snapshot.\r\n4. **Headless browser script** (Playwright / Puppeteer) — drives the UI, asserts on DOM/console/network.\r\n5. **Replay a captured trace.** Save a real network request / payload / event log to disk; replay it through the code path in isolation.\r\n6. **Throwaway harness.** Spin up a minimal subset of the system (one service, mocked deps) that exercises the bug code path with a single function call.\r\n7. **Property / fuzz loop.** If the bug is \"sometimes wrong output\", run 1000 random inputs and look for the failure mode.\r\n8. **Bisection harness.** If the bug appeared between two known states (commit, dataset, version), automate \"boot at state X, check, repeat\" so you can `git bisect run` it.\r\n9. **Differential loop.** Run the same input through old-version vs new-version (or two configs) and diff outputs.\r\n10. **HITL bash script.** Last resort. If a human must click, drive _them_ with `scripts/hitl-loop.template.sh` so the loop is still structured. Captured output feeds back to you.\r\n\r\nBuild the right feedback loop, and the bug is 90% fixed.\r\n\r\n### Tighten the loop\r\n\r\nTreat the loop as a product. Once you have _a_ loop, **tighten** it:\r\n\r\n- Can I make it faster? (Cache setup, skip unrelated init, narrow the test scope.)\r\n- Can I make the signal sharper? (Assert on the specific symptom, not \"didn't crash\".)\r\n- Can I make it more deterministic? (Pin time, seed RNG, isolate filesystem, freeze network.)\r\n\r\nA 30-second flaky loop is barely better than no loop; a 2-second deterministic one is tight — a debugging superpower.\r\n\r\n### Non-deterministic bugs\r\n\r\nThe goal is not a clean repro but a **higher reproduction rate**. Loop the trigger 100×, parallelise, add stress, narrow timing windows, inject sleeps. A 50%-flake bug is debuggable; 1% is not — keep raising the rate until it's debuggable.\r\n\r\n### When you genuinely cannot build a loop\r\n\r\nStop and say so explicitly. List what you tried. Ask the user for: (a) access to whatever environment reproduces it, (b) a captured artifact (HAR file, log dump, core dump, screen recording with timestamps), or (c) permission to add temporary production instrumentation. Do **not** proceed to hypothesise without a loop.\r\n\r\n### Completion criterion — a tight loop that goes red\r\n\r\nPhase 1 is done when the loop is **tight** and **red-capable**: you can name **one command** — a script path, a test invocation, a curl — that you have **already run at least once** (paste the invocation and its output), and that is:\r\n\r\n- [ ] **Red-capable** — it drives the actual bug code path and asserts the **user's exact symptom**, so it can go red on this bug and green once fixed. Not \"runs without erroring\" — it must be able to _catch this specific bug_.\r\n- [ ] **Deterministic** — same verdict every run (flaky bugs: a pinned, high reproduction rate, per above).\r\n- [ ] **Fast** — seconds, not minutes.\r\n- [ ] **Agent-runnable** — you can run it unattended; a human in the loop only via `scripts/hitl-loop.template.sh`.\r\n\r\nIf you catch yourself reading code to build a theory before this command exists, **stop — jumping straight to a hypothesis is the exact failure this skill prevents.** No red-capable command, no Phase 2.\r\n\r\n## Phase 2 — Reproduce + minimise\r\n\r\nRun the loop. Watch it go red — the bug appears.\r\n\r\nConfirm:\r\n\r\n- [ ] The loop produces the failure mode the **user** described — not a different failure that happens to be nearby. Wrong bug = wrong fix.\r\n- [ ] The failure is reproducible across multiple runs (or, for non-deterministic bugs, reproducible at a high enough rate to debug against).\r\n- [ ] You have captured the exact symptom (error message, wrong output, slow timing) so later phases can verify the fix actually addresses it.\r\n\r\n### Minimise\r\n\r\nOnce it's red, shrink the repro to the **smallest scenario that still goes red**. Cut inputs, callers, config, data, and steps **one at a time**, re-running the loop after each cut — keep only what's load-bearing for the failure.\r\n\r\nWhy bother: a minimal repro shrinks the hypothesis space in Phase 3 (fewer moving parts left to suspect) and becomes the clean regression test in Phase 5.\r\n\r\nDone when **every remaining element is load-bearing** — removing any one of them makes the loop go green.\r\n\r\nDo not proceed until you have reproduced **and** minimised.\r\n\r\n## Phase 3 — Hypothesise\r\n\r\nGenerate **3–5 ranked hypotheses** before testing any of them. Single-hypothesis generation anchors on the first plausible idea.\r\n\r\nEach hypothesis must be **falsifiable**: state the prediction it makes.\r\n\r\n> Format: \"If <X> is the cause, then <changing Y> will make the bug disappear / <changing Z> will make it worse.\"\r\n\r\nIf you cannot state the prediction, the hypothesis is a vibe — discard or sharpen it.\r\n\r\n**Show the ranked list to the user before testing.** They often have domain knowledge that re-ranks instantly (\"we just deployed a change to #3\"), or know hypotheses they've already ruled out. Cheap checkpoint, big time saver. Don't block on it — proceed with your ranking if the user is AFK.\r\n\r\n## Phase 4 — Instrument\r\n\r\nEach probe must map to a specific prediction from Phase 3. **Change one variable at a time.**\r\n\r\nTool preference:\r\n\r\n1. **Debugger / REPL inspection** if the env supports it. One breakpoint beats ten logs.\r\n2. **Targeted logs** at the boundaries that distinguish hypotheses.\r\n3. Never \"log everything and grep\".\r\n\r\n**Tag every debug log** with a unique prefix, e.g. `[DEBUG-a4f2]`. Cleanup at the end becomes a single grep. Untagged logs survive; tagged logs die.\r\n\r\n**Perf branch.** For performance regressions, logs are usually wrong. Instead: establish a baseline measurement (timing harness, `performance.now()`, profiler, query plan), then bisect. Measure first, fix second.\r\n\r\n## Phase 5 — Fix + regression test\r\n\r\nWrite the regression test **before the fix** — but only if there is a **correct seam** for it.\r\n\r\nA correct seam is one where the test exercises the **real bug pattern** as it occurs at the call site. If the only available seam is too shallow (single-caller test when the bug needs multiple callers, unit test that can't replicate the chain that triggered the bug), a regression test there gives false confidence.\r\n\r\n**If no correct seam exists, that itself is the finding.** Note it. The codebase architecture is preventing the bug from being locked down. Flag this for the next phase.\r\n\r\nIf a correct seam exists:\r\n\r\n1. Turn the minimised repro into a failing test at that seam.\r\n2. Watch it fail.\r\n3. Apply the fix.\r\n4. Watch it pass.\r\n5. Re-run the Phase 1 feedback loop against the original (un-minimised) scenario.\r\n\r\n## Phase 6 — Cleanup + post-mortem\r\n\r\nRequired before declaring done:\r\n\r\n- [ ] Original repro no longer reproduces (re-run the Phase 1 loop)\r\n- [ ] Regression test passes (or absence of seam is documented)\r\n- [ ] All `[DEBUG-...]` instrumentation removed (`grep` the prefix)\r\n- [ ] Throwaway prototypes deleted (or moved to a clearly-marked debug location)\r\n- [ ] The hypothesis that turned out correct is stated in the commit / PR message — so the next debugger learns\r\n\r\n**Then ask: what would have prevented this bug?** If the answer involves architectural change (no good test seam, tangled callers, hidden coupling) hand off to the `/improve-codebase-architecture` skill with the specifics. Make the recommendation **after** the fix is in, not before — you have more information now than when you started.\r","startLine":1,"lineNumbers":[1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100,101,102,103,104,105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127,128,129,130,131,132,133,134]},"meta":{"source":{"type":"internal","value":"skill://diagnosing-bugs"}}},"isError":false,"timestamp":1789542448163}}
{"type":"message","id":"babcb6e2","parentId":"a9cddf6c","timestamp":"2026-09-16T07:07:28.165Z","message":{"role":"toolResult","toolCallId":"call_auRBqnsBxy7ApzdmINJzXkvc|fc_0ba31c31d1cf7dc5016aaa40300ff887d2b385850f3107fe02","toolName":"read","content":[{"type":"text","text":"---\nname: diagnose\ndescription: Disciplined diagnosis loop for hard bugs and performance regressions. Reproduce → minimise → hypothesise → instrument → fix → regression-test. Use when user says \"diagnose this\" / \"debug this\", reports a bug, says something is broken/throwing/failing, or describes a performance regression.\n---\n\n# Diagnose\n\nA discipline for hard bugs. Skip phases only when explicitly justified.\n\nWhen exploring the codebase, use the project's domain glossary to get a clear mental model of the relevant modules, and check ADRs in the area you're touching.\n\n## Phase 1 — Build a feedback loop\n\n**This is the skill.** Everything else is mechanical. If you have a fast, deterministic, agent-runnable pass/fail signal for the bug, you will find the cause — bisection, hypothesis-testing, and instrumentation all just consume that signal. If you don't have one, no amount of staring at code will save you.\n\nSpend disproportionate effort here. **Be aggressive. Be creative. Refuse to give up.**\n\n### Ways to construct one — try them in roughly this order\n\n1. **Failing test** at whatever seam reaches the bug — unit, integration, e2e.\n2. **Curl / HTTP script** against a running dev server.\n3. **CLI invocation** with a fixture input, diffing stdout against a known-good snapshot.\n4. **Headless browser script** (Playwright / Puppeteer) — drives the UI, asserts on DOM/console/network.\n5. **Replay a captured trace.** Save a real network request / payload / event log to disk; replay it through the code path in isolation.\n6. **Throwaway harness.** Spin up a minimal subset of the system (one service, mocked deps) that exercises the bug code path with a single function call.\n7. **Property / fuzz loop.** If the bug is \"sometimes wrong output\", run 1000 random inputs and look for the failure mode.\n8. **Bisection harness.** If the bug appeared between two known states (commit, dataset, version), automate \"boot at state X, check, repeat\" so you can `git bisect run` it.\n9. **Differential loop.** Run the same input through old-version vs new-version (or two configs) and diff outputs.\n10. **HITL bash script.** Last resort. If a human must click, drive _them_ with `scripts/hitl-loop.template.sh` so the loop is still structured. Captured output feeds back to you.\n\nBuild the right feedback loop, and the bug is 90% fixed.\n\n### Iterate on the loop itself\n\nTreat the loop as a product. Once you have _a_ loop, ask:\n\n- Can I make it faster? (Cache setup, skip unrelated init, narrow the test scope.)\n- Can I make the signal sharper? (Assert on the specific symptom, not \"didn't crash\".)\n- Can I make it more deterministic? (Pin time, seed RNG, isolate filesystem, freeze network.)\n\nA 30-second flaky loop is barely better than no loop. A 2-second deterministic loop is a debugging superpower.\n\n### Non-deterministic bugs\n\nThe goal is not a clean repro but a **higher reproduction rate**. Loop the trigger 100×, parallelise, add stress, narrow timing windows, inject sleeps. A 50%-flake bug is debuggable; 1% is not — keep raising the rate until it's debuggable.\n\n### When you genuinely cannot build a loop\n\nStop and say so explicitly. List what you tried. Ask the user for: (a) access to whatever environment reproduces it, (b) a captured artifact (HAR file, log dump, core dump, screen recording with timestamps), or (c) permission to add temporary production instrumentation. Do **not** proceed to hypothesise without a loop.\n\nDo not proceed to Phase 2 until you have a loop you believe in.\n\n## Phase 2 — Reproduce\n\nRun the loop. Watch the bug appear.\n\nConfirm:\n\n- [ ] The loop produces the failure mode the **user** described — not a different failure that happens to be nearby. Wrong bug = wrong fix.\n- [ ] The failure is reproducible across multiple runs (or, for non-deterministic bugs, reproducible at a high enough rate to debug against).\n- [ ] You have captured the exact symptom (error message, wrong output, slow timing) so later phases can verify the fix actually addresses it.\n\nDo not proceed until you reproduce the bug.\n\n## Phase 3 — Hypothesise\n\nGenerate **3–5 ranked hypotheses** before testing any of them. Single-hypothesis generation anchors on the first plausible idea.\n\nEach hypothesis must be **falsifiable**: state the prediction it makes.\n\n> Format: \"If <X> is the cause, then <changing Y> will make the bug disappear / <changing Z> will make it worse.\"\n\nIf you cannot state the prediction, the hypothesis is a vibe — discard or sharpen it.\n\n**Show the ranked list to the user before testing.** They often have domain knowledge that re-ranks instantly (\"we just deployed a change to #3\"), or know hypotheses they've already ruled out. Cheap checkpoint, big time saver. Don't block on it — proceed with your ranking if the user is AFK.\n\n## Phase 4 — Instrument\n\nEach probe must map to a specific prediction from Phase 3. **Change one variable at a time.**\n\nTool preference:\n\n1. **Debugger / REPL inspection** if the env supports it. One breakpoint beats ten logs.\n2. **Targeted logs** at the boundaries that distinguish hypotheses.\n3. Never \"log everything and grep\".\n\n**Tag every debug log** with a unique prefix, e.g. `[DEBUG-a4f2]`. Cleanup at the end becomes a single grep. Untagged logs survive; tagged logs die.\n\n**Perf branch.** For performance regressions, logs are usually wrong. Instead: establish a baseline measurement (timing harness, `performance.now()`, profiler, query plan), then bisect. Measure first, fix second.\n\n## Phase 5 — Fix + regression test\n\nWrite the regression test **before the fix** — but only if there is a **correct seam** for it.\n\nA correct seam is one where the test exercises the **real bug pattern** as it occurs at the call site. If the only available seam is too shallow (single-caller test when the bug needs multiple callers, unit test that can't replicate the chain that triggered the bug), a regression test there gives false confidence.\n\n**If no correct seam exists, that itself is the finding.** Note it. The codebase architecture is preventing the bug from being locked down. Flag this for the next phase.\n\nIf a correct seam exists:\n\n1. Turn the minimised repro into a failing test at that seam.\n2. Watch it fail.\n3. Apply the fix.\n4. Watch it pass.\n5. Re-run the Phase 1 feedback loop against the original (un-minimised) scenario.\n\n## Phase 6 — Cleanup + post-mortem\n\nRequired before declaring done:\n\n- [ ] Original repro no longer reproduces (re-run the Phase 1 loop)\n- [ ] Regression test passes (or absence of seam is documented)\n- [ ] All `[DEBUG-...]` instrumentation removed (`grep` the prefix)\n- [ ] Throwaway prototypes deleted (or moved to a clearly-marked debug location)\n- [ ] The hypothesis that turned out correct is stated in the commit / PR message — so the next debugger learns\n\n**Then ask: what would have prevented this bug?** If the answer involves architectural change (no good test seam, tangled callers, hidden coupling) hand off to the `/improve-codebase-architecture` skill with the specifics. Make the recommendation **after** the fix is in, not before — you have more information now than when you started."}],"details":{"resolvedPath":"C:\\Users\\decid\\.agents\\skills\\diagnose\\SKILL.md","contentType":"text/markdown","totalLines":117,"displayContent":{"text":"---\r\nname: diagnose\r\ndescription: Disciplined diagnosis loop for hard bugs and performance regressions. Reproduce → minimise → hypothesise → instrument → fix → regression-test. Use when user says \"diagnose this\" / \"debug this\", reports a bug, says something is broken/throwing/failing, or describes a performance regression.\r\n---\r\n\r\n# Diagnose\r\n\r\nA discipline for hard bugs. Skip phases only when explicitly justified.\r\n\r\nWhen exploring the codebase, use the project's domain glossary to get a clear mental model of the relevant modules, and check ADRs in the area you're touching.\r\n\r\n## Phase 1 — Build a feedback loop\r\n\r\n**This is the skill.** Everything else is mechanical. If you have a fast, deterministic, agent-runnable pass/fail signal for the bug, you will find the cause — bisection, hypothesis-testing, and instrumentation all just consume that signal. If you don't have one, no amount of staring at code will save you.\r\n\r\nSpend disproportionate effort here. **Be aggressive. Be creative. Refuse to give up.**\r\n\r\n### Ways to construct one — try them in roughly this order\r\n\r\n1. **Failing test** at whatever seam reaches the bug — unit, integration, e2e.\r\n2. **Curl / HTTP script** against a running dev server.\r\n3. **CLI invocation** with a fixture input, diffing stdout against a known-good snapshot.\r\n4. **Headless browser script** (Playwright / Puppeteer) — drives the UI, asserts on DOM/console/network.\r\n5. **Replay a captured trace.** Save a real network request / payload / event log to disk; replay it through the code path in isolation.\r\n6. **Throwaway harness.** Spin up a minimal subset of the system (one service, mocked deps) that exercises the bug code path with a single function call.\r\n7. **Property / fuzz loop.** If the bug is \"sometimes wrong output\", run 1000 random inputs and look for the failure mode.\r\n8. **Bisection harness.** If the bug appeared between two known states (commit, dataset, version), automate \"boot at state X, check, repeat\" so you can `git bisect run` it.\r\n9. **Differential loop.** Run the same input through old-version vs new-version (or two configs) and diff outputs.\r\n10. **HITL bash script.** Last resort. If a human must click, drive _them_ with `scripts/hitl-loop.template.sh` so the loop is still structured. Captured output feeds back to you.\r\n\r\nBuild the right feedback loop, and the bug is 90% fixed.\r\n\r\n### Iterate on the loop itself\r\n\r\nTreat the loop as a product. Once you have _a_ loop, ask:\r\n\r\n- Can I make it faster? (Cache setup, skip unrelated init, narrow the test scope.)\r\n- Can I make the signal sharper? (Assert on the specific symptom, not \"didn't crash\".)\r\n- Can I make it more deterministic? (Pin time, seed RNG, isolate filesystem, freeze network.)\r\n\r\nA 30-second flaky loop is barely better than no loop. A 2-second deterministic loop is a debugging superpower.\r\n\r\n### Non-deterministic bugs\r\n\r\nThe goal is not a clean repro but a **higher reproduction rate**. Loop the trigger 100×, parallelise, add stress, narrow timing windows, inject sleeps. A 50%-flake bug is debuggable; 1% is not — keep raising the rate until it's debuggable.\r\n\r\n### When you genuinely cannot build a loop\r\n\r\nStop and say so explicitly. List what you tried. Ask the user for: (a) access to whatever environment reproduces it, (b) a captured artifact (HAR file, log dump, core dump, screen recording with timestamps), or (c) permission to add temporary production instrumentation. Do **not** proceed to hypothesise without a loop.\r\n\r\nDo not proceed to Phase 2 until you have a loop you believe in.\r\n\r\n## Phase 2 — Reproduce\r\n\r\nRun the loop. Watch the bug appear.\r\n\r\nConfirm:\r\n\r\n- [ ] The loop produces the failure mode the **user** described — not a different failure that happens to be nearby. Wrong bug = wrong fix.\r\n- [ ] The failure is reproducible across multiple runs (or, for non-deterministic bugs, reproducible at a high enough rate to debug against).\r\n- [ ] You have captured the exact symptom (error message, wrong output, slow timing) so later phases can verify the fix actually addresses it.\r\n\r\nDo not proceed until you reproduce the bug.\r\n\r\n## Phase 3 — Hypothesise\r\n\r\nGenerate **3–5 ranked hypotheses** before testing any of them. Single-hypothesis generation anchors on the first plausible idea.\r\n\r\nEach hypothesis must be **falsifiable**: state the prediction it makes.\r\n\r\n> Format: \"If <X> is the cause, then <changing Y> will make the bug disappear / <changing Z> will make it worse.\"\r\n\r\nIf you cannot state the prediction, the hypothesis is a vibe — discard or sharpen it.\r\n\r\n**Show the ranked list to the user before testing.** They often have domain knowledge that re-ranks instantly (\"we just deployed a change to #3\"), or know hypotheses they've already ruled out. Cheap checkpoint, big time saver. Don't block on it — proceed with your ranking if the user is AFK.\r\n\r\n## Phase 4 — Instrument\r\n\r\nEach probe must map to a specific prediction from Phase 3. **Change one variable at a time.**\r\n\r\nTool preference:\r\n\r\n1. **Debugger / REPL inspection** if the env supports it. One breakpoint beats ten logs.\r\n2. **Targeted logs** at the boundaries that distinguish hypotheses.\r\n3. Never \"log everything and grep\".\r\n\r\n**Tag every debug log** with a unique prefix, e.g. `[DEBUG-a4f2]`. Cleanup at the end becomes a single grep. Untagged logs survive; tagged logs die.\r\n\r\n**Perf branch.** For performance regressions, logs are usually wrong. Instead: establish a baseline measurement (timing harness, `performance.now()`, profiler, query plan), then bisect. Measure first, fix second.\r\n\r\n## Phase 5 — Fix + regression test\r\n\r\nWrite the regression test **before the fix** — but only if there is a **correct seam** for it.\r\n\r\nA correct seam is one where the test exercises the **real bug pattern** as it occurs at the call site. If the only available seam is too shallow (single-caller test when the bug needs multiple callers, unit test that can't replicate the chain that triggered the bug), a regression test there gives false confidence.\r\n\r\n**If no correct seam exists, that itself is the finding.** Note it. The codebase architecture is preventing the bug from being locked down. Flag this for the next phase.\r\n\r\nIf a correct seam exists:\r\n\r\n1. Turn the minimised repro into a failing test at that seam.\r\n2. Watch it fail.\r\n3. Apply the fix.\r\n4. Watch it pass.\r\n5. Re-run the Phase 1 feedback loop against the original (un-minimised) scenario.\r\n\r\n## Phase 6 — Cleanup + post-mortem\r\n\r\nRequired before declaring done:\r\n\r\n- [ ] Original repro no longer reproduces (re-run the Phase 1 loop)\r\n- [ ] Regression test passes (or absence of seam is documented)\r\n- [ ] All `[DEBUG-...]` instrumentation removed (`grep` the prefix)\r\n- [ ] Throwaway prototypes deleted (or moved to a clearly-marked debug location)\r\n- [ ] The hypothesis that turned out correct is stated in the commit / PR message — so the next debugger learns\r\n\r\n**Then ask: what would have prevented this bug?** If the answer involves architectural change (no good test seam, tangled callers, hidden coupling) hand off to the `/improve-codebase-architecture` skill with the specifics. Make the recommendation **after** the fix is in, not before — you have more information now than when you started.\r","startLine":1,"lineNumbers":[1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100,101,102,103,104,105,106,107,108,109,110,111,112,113,114,115,116,117]},"meta":{"source":{"type":"internal","value":"skill://diagnose"}}},"isError":false,"timestamp":1789542448164}}
{"type":"message","id":"161bf245","parentId":"babcb6e2","timestamp":"2026-09-16T07:07:28.521Z","message":{"role":"toolResult","toolCallId":"call_4x3HFZRiglrq1vuIYKGsiGiN|fc_0ba31c31d1cf7dc5016aaa4030101c87d2a5c5e7ba84e4e71f","toolName":"read","content":[{"type":"text","text":"URL: https://learn.microsoft.com/en-us/windows/win32/api/dbghelp/nf-dbghelp-stackwalk64\nContent-Type: text/markdown\nMethod: content-negotiation\nNotes: Content negotiation returned text/markdown\n\n---\n\n---\nlayout: Conceptual\ntitle: StackWalk64 function (dbghelp.h) - Win32 apps | Microsoft Learn\ncanonicalUrl: https://learn.microsoft.com/en-us/windows/win32/api/dbghelp/nf-dbghelp-stackwalk64\nadobe-target: true\nbreadcrumb_path: /windows/desktop/api/breadcrumb/toc.json\nuhfHeaderId: MSDocsHeader-WinDevCenter\nms.service: windows-api-desktop-tech\nms.subservice: sdk-api-reference\nms.topic: reference\nms.author: kbridge\nauthor: karl-bridge-microsoft\nfeedback_system: Standard\nfeedback_product_url: https://www.microsoft.com/en-us/windowsinsider/feedbackhub/fb\nfeedback_help_link_url: https://learn.microsoft.com/answers/tags/224/windows-api-win32/\nfeedback_help_link_type: get-help-at-qna\nUID: NF:dbghelp.StackWalk64\ndescription: Obtains a stack trace. (StackWalk64)\nold-location: base\\stackwalk64.htm\ntech.root: Debug\nms.assetid: e2bdaa4c-5474-41a0-bcea-927570c8402c\nms.date: 2018-12-05T00:00:00.0000000Z\nms.keywords: IMAGE_FILE_MACHINE_AMD64, IMAGE_FILE_MACHINE_I386, IMAGE_FILE_MACHINE_IA64, StackWalk, StackWalk function, StackWalk64, StackWalk64 function, _win32_stackwalk64, base.stackwalk64, dbghelp/StackWalk, dbghelp/StackWalk64\nreq.header: dbghelp.h\nreq.include-header: \nreq.target-type: Windows\nreq.target-min-winverclnt: \nreq.target-min-winversvr: \nreq.kmdf-ver: \nreq.umdf-ver: \nreq.ddi-compliance: \nreq.unicode-ansi: \nreq.idl: \nreq.max-support: \nreq.namespace: \nreq.assembly: \nreq.type-library: \nreq.lib: DbgHelp.lib\nreq.dll: DbgHelp.dll\nreq.irql: \ntargetos: Windows\nreq.typenames: \nreq.redist: DbgHelp.dll 5.1 or later\nms.custom: 19H1\ntopic_type:\n- APIRef\n- kbSyntax\napi_type:\n- DllExport\napi_location:\n- DbgHelp.dll\n- imagehlp.dll\napi_name:\n- StackWalk64\n- StackWalk\nlocale: en-us\ndocument_id: 14bbe9b9-baad-9d92-0874-8030239b533d\ndocument_version_independent_id: aa79e6e9-93ac-cc90-389f-7bd47291d2ef\nupdated_at: 2024-02-22T19:54:00.0000000Z\noriginal_content_git_url: https://cpubwin.visualstudio.com/DefaultCollection/win32/_git/sdk-api-build?path=/sdk-api-src/content/dbghelp/nf-dbghelp-stackwalk64.md&version=GBlive&_a=contents\ngitcommit: https://cpubwin.visualstudio.com/DefaultCollection/win32/_git/sdk-api-build/commit/9267262487657894a8af112d7165006fed5035a7?path=/sdk-api-src/content/dbghelp/nf-dbghelp-stackwalk64.md&_a=contents\ngit_commit_id: 9267262487657894a8af112d7165006fed5035a7\nsite_name: Docs\ndepot_name: MSDN.sdk-api-build\npage_type: conceptual\ntoc_rel: toc.json\npdf_url_template: https://learn.microsoft.com/pdfstore/en-us/MSDN.sdk-api-build/{branchName}{pdfName}\nsearch.mshattr.devlang: c++\nword_count: 781\nasset_id: dbghelp/nf-dbghelp-stackwalk64\nmoniker_range_name: \nmonikers: []\nitem_type: Content\nsource_path: sdk-api-src/content/dbghelp/nf-dbghelp-stackwalk64.md\ncmProducts:\n- https://authoring-docs-microsoft.poolparty.biz/devrel/540ac133-a371-4dbb-8f94-28d6cc77a70b\nspProducts:\n- https://authoring-docs-microsoft.poolparty.biz/devrel/60bfc045-f127-4841-9d00-ea35495a5800\nplatformId: 3cc7753d-ae07-a453-1048-8ac0c4c00ba9\n---\n\n# StackWalk64 function (dbghelp.h) - Win32 apps | Microsoft Learn\n\nObtains a stack trace.\n\n## Syntax\n\n```cpp\nBOOL IMAGEAPI StackWalk64(\n  [in]           DWORD                            MachineType,\n  [in]           HANDLE                           hProcess,\n  [in]           HANDLE                           hThread,\n  [in, out]      LPSTACKFRAME64                   StackFrame,\n  [in, out]      PVOID                            ContextRecord,\n  [in, optional] PREAD_PROCESS_MEMORY_ROUTINE64   ReadMemoryRoutine,\n  [in, optional] PFUNCTION_TABLE_ACCESS_ROUTINE64 FunctionTableAccessRoutine,\n  [in, optional] PGET_MODULE_BASE_ROUTINE64       GetModuleBaseRoutine,\n  [in, optional] PTRANSLATE_ADDRESS_ROUTINE64     TranslateAddress\n);\n```\n\n## Parameters\n\n`[in] MachineType`\n\nThe architecture type of the computer for which the stack trace is generated. This parameter can be one of the following values.\n\n| Value | Meaning |\n| --- | --- |\n| - **IMAGE\\_FILE\\_MACHINE\\_I386**<br>- 0x014c | Intel x86 |\n| - **IMAGE\\_FILE\\_MACHINE\\_IA64**<br>- 0x0200 | Intel Itanium |\n| - **IMAGE\\_FILE\\_MACHINE\\_AMD64**<br>- 0x8664 | x64 (AMD64 or EM64T) |\n\n`[in] hProcess`\n\nA handle to the process for which the stack trace is generated. If the caller supplies a valid callback pointer for the *ReadMemoryRoutine* parameter, then this value does not have to be a valid process handle. It can be a token that is unique and consistently the same for all calls to the **StackWalk64** function. If the symbol handler is used with **StackWalk64**, use the same process handles for the calls to each function.\n\n`[in] hThread`\n\nA handle to the thread for which the stack trace is generated. If the caller supplies a valid callback pointer for the *ReadMemoryRoutine* parameter, then this value does not have to be a valid thread handle. It can be a token that is unique and consistently the same for all calls to the **StackWalk64** function.\n\n`[in, out] StackFrame`\n\nA pointer to a [STACKFRAME64](/en-us/windows/desktop/api/dbghelp/ns-dbghelp-stackframe) structure. This structure receives information for the next frame, if the function call succeeds.\n\n`[in, out] ContextRecord`\n\nA pointer to a [CONTEXT](/en-us/windows/desktop/api/winnt/ns-winnt-arm64_nt_context) structure. This parameter is required only when the *MachineType* parameter is not **IMAGE\\_FILE\\_MACHINE\\_I386**. However, it is recommended that this parameter contain a valid context record. This allows **StackWalk64** to handle a greater variety of situations.\n\nThis context may be modified, so do not pass a context record that should not be modified.\n\n`[in, optional] ReadMemoryRoutine`\n\nA callback routine that provides memory read services. When the **StackWalk64** function needs to read memory from the process's address space, the [ReadProcessMemoryProc64](/en-us/windows/desktop/api/dbghelp/nc-dbghelp-pread_process_memory_routine) callback is used.\n\nIf this parameter is **NULL**, then the function uses a default routine. In this case, the *hProcess* parameter must be a valid process handle.\n\nIf this parameter is not **NULL**, the application should implement and register a symbol handler callback function that handles **CBA\\_READ\\_MEMORY**.\n\n`[in, optional] FunctionTableAccessRoutine`\n\nA callback routine that provides access to the run-time function table for the process. This parameter is required because the **StackWalk64** function does not have access to the process's run-time function table. For more information, see [FunctionTableAccessProc64](/en-us/windows/desktop/api/dbghelp/nc-dbghelp-pfunction_table_access_routine).\n\nThe symbol handler provides functions that load and access the run-time table. If these functions are used, then [SymFunctionTableAccess64](/en-us/windows/desktop/api/dbghelp/nf-dbghelp-symfunctiontableaccess) can be passed as a valid parameter.\n\n`[in, optional] GetModuleBaseRoutine`\n\nA callback routine that provides a module base for any given virtual address. This parameter is required. For more information, see [GetModuleBaseProc64](/en-us/windows/desktop/api/dbghelp/nc-dbghelp-pget_module_base_routine).\n\nThe symbol handler provides functions that load and maintain module information. If these functions are used, then [SymGetModuleBase64](/en-us/windows/desktop/api/dbghelp/nf-dbghelp-symgetmodulebase) can be passed as a valid parameter.\n\n`[in, optional] TranslateAddress`\n\nA callback routine that provides address translation for 16-bit addresses. For more information, see [TranslateAddressProc64](/en-us/windows/desktop/api/dbghelp/nc-dbghelp-ptranslate_address_routine).\n\nMost callers of **StackWalk64** can safely pass **NULL** for this parameter.\n\n## Return value\n\nIf the function succeeds, the return value is **TRUE**.\n\nIf the function fails, the return value is **FALSE**. Note that **StackWalk64** generally does not set the last error code.\n\n## Remarks\n\nThe **StackWalk64** function provides a portable method for obtaining a stack trace. Using the **StackWalk64** function is recommended over writing your own function because of all the complexities associated with stack walking on platforms. In addition, there are compiler options that cause the stack to appear differently, depending on how the module is compiled. By using this function, your application has a portable stack trace that continues to work as the compiler and operating system change.\n\nThe first call to this function will fail if the **AddrPC**, **AddrFrame**, and **AddrStack** members of the [STACKFRAME64](/en-us/windows/desktop/api/dbghelp/ns-dbghelp-stackframe) structure passed in the *StackFrame* parameter are not initialized.\n\nAll DbgHelp functions, such as this one, are single threaded. Therefore, calls from more than one thread to this function will likely result in unexpected behavior or memory corruption. To avoid this, you must synchronize all concurrent calls from more than one thread to this function.\n\nThis function supersedes the **StackWalk** function. For more information, see [Updated Platform Support](/en-us/windows/desktop/Debug/updated-platform-support). **StackWalk** is defined as follows in DbgHelp.h.\n\n```cpp\n#if !defined(_IMAGEHLP_SOURCE_) && defined(_IMAGEHLP64)\n#define StackWalk StackWalk64\n#else\nBOOL\nIMAGEAPI\nStackWalk(\n    DWORD MachineType,\n    __in HANDLE hProcess,\n    __in HANDLE hThread,\n    __inout LPSTACKFRAME StackFrame,\n    __inout PVOID ContextRecord,\n    __in_opt PREAD_PROCESS_MEMORY_ROUTINE ReadMemoryRoutine,\n    __in_opt PFUNCTION_TABLE_ACCESS_ROUTINE FunctionTableAccessRoutine,\n    __in_opt PGET_MODULE_BASE_ROUTINE GetModuleBaseRoutine,\n    __in_opt PTRANSLATE_ADDRESS_ROUTINE TranslateAddress\n    );\n\n#endif\n```\n\n## Requirements\n\n| Requirement | Value |\n| --- | --- |\n| **Target Platform** | Windows |\n| **Header** | dbghelp.h |\n| **Library** | DbgHelp.lib |\n| **DLL** | DbgHelp.dll |\n| **Redistributable** | DbgHelp.dll 5.1 or later |"}],"details":{"kind":"url","url":"https://learn.microsoft.com/en-us/windows/win32/api/dbghelp/nf-dbghelp-stackwalk64","finalUrl":"https://learn.microsoft.com/en-us/windows/win32/api/dbghelp/nf-dbghelp-stackwalk64","contentType":"text/markdown","method":"content-negotiation","truncated":false,"notes":["Content negotiation returned text/markdown"],"meta":{"source":{"type":"url","value":"https://learn.microsoft.com/en-us/windows/win32/api/dbghelp/nf-dbghelp-stackwalk64"}}},"isError":false,"timestamp":1789542448521}}
{"type":"message","id":"99b4fb42","parentId":"161bf245","timestamp":"2026-09-16T07:07:28.670Z","message":{"role":"toolResult","toolCallId":"call_56XQZRM0JEhfGDGEMoy2bH6m|fc_0ba31c31d1cf7dc5016aaa4030102887d2bfb6539f5a2ea7a3","toolName":"read","content":[{"type":"text","text":"URL: https://learn.microsoft.com/en-us/windows/win32/api/dbghelp/nf-dbghelp-symsetoptions\nContent-Type: text/markdown\nMethod: content-negotiation\nNotes: Content negotiation returned text/markdown\n\n---\n\n---\nlayout: Conceptual\ntitle: SymSetOptions function (dbghelp.h) - Win32 apps | Microsoft Learn\ncanonicalUrl: https://learn.microsoft.com/en-us/windows/win32/api/dbghelp/nf-dbghelp-symsetoptions\nadobe-target: true\nbreadcrumb_path: /windows/desktop/api/breadcrumb/toc.json\nuhfHeaderId: MSDocsHeader-WinDevCenter\nms.service: windows-api-desktop-tech\nms.subservice: sdk-api-reference\nms.topic: reference\nms.author: kbridge\nauthor: karl-bridge-microsoft\nfeedback_system: Standard\nfeedback_product_url: https://www.microsoft.com/en-us/windowsinsider/feedbackhub/fb\nfeedback_help_link_url: https://learn.microsoft.com/answers/tags/224/windows-api-win32/\nfeedback_help_link_type: get-help-at-qna\nUID: NF:dbghelp.SymSetOptions\ndescription: Sets the options mask.\nold-location: base\\symsetoptions.htm\ntech.root: Debug\nms.assetid: 15d72415-829f-4ba3-af80-1f3762cbebda\nms.date: 2018-12-05T00:00:00.0000000Z\nms.keywords: SYMOPT_ALLOW_ABSOLUTE_SYMBOLS, SYMOPT_ALLOW_ZERO_ADDRESS, SYMOPT_AUTO_PUBLICS, SYMOPT_CASE_INSENSITIVE, SYMOPT_DEBUG, SYMOPT_DEFERRED_LOADS, SYMOPT_DISABLE_SYMSRV_AUTODETECT, SYMOPT_EXACT_SYMBOLS, SYMOPT_FAIL_CRITICAL_ERRORS, SYMOPT_FAVOR_COMPRESSED, SYMOPT_FLAT_DIRECTORY, SYMOPT_IGNORE_CVREC, SYMOPT_IGNORE_IMAGEDIR, SYMOPT_IGNORE_NT_SYMPATH, SYMOPT_INCLUDE_32BIT_MODULES, SYMOPT_LOAD_ANYTHING, SYMOPT_LOAD_LINES, SYMOPT_NO_CPP, SYMOPT_NO_IMAGE_SEARCH, SYMOPT_NO_PROMPTS, SYMOPT_NO_PUBLICS, SYMOPT_NO_UNQUALIFIED_LOADS, SYMOPT_OVERWRITE, SYMOPT_PUBLICS_ONLY, SYMOPT_SECURE, SYMOPT_UNDNAME, SymSetOptions, SymSetOptions function, _win32_symsetoptions, base.symsetoptions, dbghelp/SymSetOptions\nreq.header: dbghelp.h\nreq.include-header: \nreq.target-type: Windows\nreq.target-min-winverclnt: \nreq.target-min-winversvr: \nreq.kmdf-ver: \nreq.umdf-ver: \nreq.ddi-compliance: \nreq.unicode-ansi: \nreq.idl: \nreq.max-support: \nreq.namespace: \nreq.assembly: \nreq.type-library: \nreq.lib: Dbghelp.lib\nreq.dll: Dbghelp.dll\nreq.irql: \ntargetos: Windows\nreq.typenames: \nreq.redist: DbgHelp.dll 5.1 or later\nms.custom: 19H1\ntopic_type:\n- APIRef\n- kbSyntax\napi_type:\n- DllExport\napi_location:\n- Dbghelp.dll\napi_name:\n- SymSetOptions\nlocale: en-us\ndocument_id: 4b8c3cf1-fcb7-7067-56ba-492ac574cb0c\ndocument_version_independent_id: db287c54-2ce4-5568-8f7a-a0daebf95a7b\nupdated_at: 2024-02-22T19:54:00.0000000Z\noriginal_content_git_url: https://cpubwin.visualstudio.com/DefaultCollection/win32/_git/sdk-api-build?path=/sdk-api-src/content/dbghelp/nf-dbghelp-symsetoptions.md&version=GBlive&_a=contents\ngitcommit: https://cpubwin.visualstudio.com/DefaultCollection/win32/_git/sdk-api-build/commit/9267262487657894a8af112d7165006fed5035a7?path=/sdk-api-src/content/dbghelp/nf-dbghelp-symsetoptions.md&_a=contents\ngit_commit_id: 9267262487657894a8af112d7165006fed5035a7\nsite_name: Docs\ndepot_name: MSDN.sdk-api-build\npage_type: conceptual\ntoc_rel: toc.json\npdf_url_template: https://learn.microsoft.com/pdfstore/en-us/MSDN.sdk-api-build/{branchName}{pdfName}\nsearch.mshattr.devlang: c++\nword_count: 845\nasset_id: dbghelp/nf-dbghelp-symsetoptions\nmoniker_range_name: \nmonikers: []\nitem_type: Content\nsource_path: sdk-api-src/content/dbghelp/nf-dbghelp-symsetoptions.md\ncmProducts:\n- https://microsoft-devrel.poolparty.biz/DevRelOfferingOntology/12ed19f9-ebdf-4c8a-8bcd-7a681836774d\n- https://authoring-docs-microsoft.poolparty.biz/devrel/540ac133-a371-4dbb-8f94-28d6cc77a70b\n- https://authoring-docs-microsoft.poolparty.biz/devrel/caec7b7f-4941-4578-b79f-c63b1c1f5af4\nspProducts:\n- https://microsoft-devrel.poolparty.biz/DevRelOfferingOntology/3a764584-4f97-452b-8f1d-36f19b12f6ae\n- https://authoring-docs-microsoft.poolparty.biz/devrel/60bfc045-f127-4841-9d00-ea35495a5800\n- https://authoring-docs-microsoft.poolparty.biz/devrel/754dea88-f800-4835-b6b5-280cb5d81e88\nplatformId: e6cefdfc-adde-e159-00df-c6d5b6c1d390\n---\n\n# SymSetOptions function (dbghelp.h) - Win32 apps | Microsoft Learn\n\nSets the options mask.\n\n## Syntax\n\n```cpp\nDWORD IMAGEAPI SymSetOptions(\n  [in] DWORD SymOptions\n);\n```\n\n## Parameters\n\n`[in] SymOptions`\n\nThe symbol options. Zero is a valid value and indicates that all options are turned off. The options values are combined using the OR operator to form a valid options value. The following are valid values.\n\n| Value | Meaning |\n| --- | --- |\n| - **SYMOPT\\_ALLOW\\_ABSOLUTE\\_SYMBOLS**<br>- 0x00000800 | Enables the use of symbols that are stored with absolute addresses. Most symbols are stored as RVAs from the base of the module. DbgHelp translates them to absolute addresses. There are symbols that are stored as an absolute address. These have very specialized purposes and are typically not used. <br>**DbgHelp 5.1 and earlier: **This value is not supported. |\n| - **SYMOPT\\_ALLOW\\_ZERO\\_ADDRESS**<br>- 0x01000000 | Enables the use of symbols that do not have an address. By default, DbgHelp filters out symbols that do not have an address. |\n| - **SYMOPT\\_AUTO\\_PUBLICS**<br>- 0x00010000 | Do not search the public symbols when searching for symbols by address, or when enumerating symbols, unless they were not found in the global symbols or within the current scope. This option has no effect with **SYMOPT\\_PUBLICS\\_ONLY**. <br>**DbgHelp 5.1 and earlier: **This value is not supported. |\n| - **SYMOPT\\_CASE\\_INSENSITIVE**<br>- 0x00000001 | All symbol searches are insensitive to case. |\n| - **SYMOPT\\_DEBUG**<br>- 0x80000000 | Pass debug output through [OutputDebugString](/en-us/windows/desktop/api/debugapi/nf-debugapi-outputdebugstringw) or the [SymRegisterCallbackProc64](/en-us/windows/desktop/api/dbghelp/nc-dbghelp-psymbol_registered_callback) callback function. |\n| - **SYMOPT\\_DEFERRED\\_LOADS**<br>- 0x00000004 | Symbols are not loaded until a reference is made requiring the symbols be loaded. This is the fastest, most efficient way to use the symbol handler. |\n| - **SYMOPT\\_DISABLE\\_SYMSRV\\_AUTODETECT**<br>- 0x02000000 | Disables the auto-detection of symbol server stores in the symbol path, even without the \"SRV\\*\" designation, maintaining compatibility with previous behavior. <br>**DbgHelp 6.6 and earlier: **This value is not supported. |\n| - **SYMOPT\\_EXACT\\_SYMBOLS**<br>- 0x00000400 | Do not load an unmatched .pdb file. Do not load export symbols if all else fails. |\n| - **SYMOPT\\_FAIL\\_CRITICAL\\_ERRORS**<br>- 0x00000200 | Do not display system dialog boxes when there is a media failure such as no media in a drive. Instead, the failure happens silently. |\n| - **SYMOPT\\_FAVOR\\_COMPRESSED**<br>- 0x00800000 | If there is both an uncompressed and a compressed file available, favor the compressed file. This option is good for slow connections. |\n| - **SYMOPT\\_FLAT\\_DIRECTORY**<br>- 0x00400000 | Symbols are stored in the root directory of the default downstream store. <br>**DbgHelp 6.1 and earlier: **This value is not supported. |\n| - **SYMOPT\\_IGNORE\\_CVREC**<br>- 0x00000080 | Ignore path information in the CodeView record of the image header when loading a .pdb file. |\n| - **SYMOPT\\_IGNORE\\_IMAGEDIR**<br>- 0x00200000 | Ignore the image directory. <br>**DbgHelp 6.1 and earlier: **This value is not supported. |\n| - **SYMOPT\\_IGNORE\\_NT\\_SYMPATH**<br>- 0x00001000 | Do not use the path specified by **\\_NT\\_SYMBOL\\_PATH** if the user calls [SymSetSearchPath](/en-us/windows/desktop/api/dbghelp/nf-dbghelp-symsetsearchpath) without a valid path. <br>**DbgHelp 5.1: **This value is not supported. |\n| - **SYMOPT\\_INCLUDE\\_32BIT\\_MODULES**<br>- 0x00002000 | When debugging on 64-bit Windows, include any 32-bit modules. |\n| - **SYMOPT\\_LOAD\\_ANYTHING**<br>- 0x00000040 | Disable checks to ensure a file (.exe, .dbg., or .pdb) is the correct file. Instead, load the first file located. |\n| - **SYMOPT\\_LOAD\\_LINES**<br>- 0x00000010 | Loads line number information. |\n| - **SYMOPT\\_NO\\_CPP**<br>- 0x00000008 | All C++ decorated symbols containing the symbol separator \"::\" are replaced by \"\\_\\_\". This option exists for debuggers that cannot handle parsing real C++ symbol names. |\n| - **SYMOPT\\_NO\\_IMAGE\\_SEARCH**<br>- 0x00020000 | Do not search the image for the symbol path when loading the symbols for a module if the module header cannot be read. <br>**DbgHelp 5.1: **This value is not supported. |\n| - **SYMOPT\\_NO\\_PROMPTS**<br>- 0x00080000 | Prevents prompting for validation from the symbol server. |\n| - **SYMOPT\\_NO\\_PUBLICS**<br>- 0x00008000 | Do not search the publics table for symbols. This option should have little effect because there are copies of the public symbols in the globals table. <br>**DbgHelp 5.1: **This value is not supported. |\n| - **SYMOPT\\_NO\\_UNQUALIFIED\\_LOADS**<br>- 0x00000100 | Prevents symbols from being loaded when the caller examines symbols across multiple modules. Examine only the module whose symbols have already been loaded. |\n| - **SYMOPT\\_OVERWRITE**<br>- 0x00100000 | Overwrite the downlevel store from the symbol store. <br>**DbgHelp 6.1 and earlier: **This value is not supported. |\n| - **SYMOPT\\_PUBLICS\\_ONLY**<br>- 0x00004000 | Do not use private symbols. The version of DbgHelp that shipped with earlier Windows release supported only public symbols; this option provides compatibility with this limitation. <br>**DbgHelp 5.1: **This value is not supported. |\n| - **SYMOPT\\_SECURE**<br>- 0x00040000 | DbgHelp will not load any symbol server other than SymSrv. SymSrv will not use the downstream store specified in **\\_NT\\_SYMBOL\\_PATH**. After this flag has been set, it cannot be cleared. <br>**DbgHelp 6.0 and 6.1: **This flag can be cleared.<br><br>**DbgHelp 5.1: **This value is not supported. |\n| - **SYMOPT\\_UNDNAME**<br>- 0x00000002 | All symbols are presented in undecorated form. <br>This option has no effect on global or local symbols because they are stored undecorated. This option applies only to public symbols. |\n\n## Return value\n\nThe function returns the current options mask.\n\n## Remarks\n\nThe options value can be changed any number of times while the library is in use by an application. The option change affects all future calls to the symbol handler.\n\nTo get the current options mask, call the [SymGetOptions](/en-us/windows/desktop/api/dbghelp/nf-dbghelp-symgetoptions) function.\n\nAll DbgHelp functions, such as this one, are single threaded. Therefore, calls from more than one thread to this function will likely result in unexpected behavior or memory corruption. To avoid this, you must synchronize all concurrent calls from more than one thread to this function.\n\n#### Examples\n\nFor an example, see [Initializing the Symbol Handler](/en-us/windows/desktop/Debug/initializing-the-symbol-handler).\n\n## Requirements\n\n| Requirement | Value |\n| --- | --- |\n| **Target Platform** | Windows |\n| **Header** | dbghelp.h |\n| **Library** | Dbghelp.lib |\n| **DLL** | Dbghelp.dll |\n| **Redistributable** | DbgHelp.dll 5.1 or later |"}],"details":{"kind":"url","url":"https://learn.microsoft.com/en-us/windows/win32/api/dbghelp/nf-dbghelp-symsetoptions","finalUrl":"https://learn.microsoft.com/en-us/windows/win32/api/dbghelp/nf-dbghelp-symsetoptions","contentType":"text/markdown","method":"content-negotiation","truncated":false,"notes":["Content negotiation returned text/markdown"],"meta":{"source":{"type":"url","value":"https://learn.microsoft.com/en-us/windows/win32/api/dbghelp/nf-dbghelp-symsetoptions"}}},"isError":false,"timestamp":1789542448670}}
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{"type":"message","id":"dd07f33e","parentId":"67c90722","timestamp":"2026-09-16T07:08:28.253Z","message":{"role":"toolResult","toolCallId":"call_Zju3rbQ3pXkGu1ws6ltSXWxs|fc_0ba31c31d1cf7dc5016aaa406c213087d2ac7ae50da2697264","toolName":"read","content":[{"type":"text","text":"[.worktrees/302-net-worker-stamps/crates/spt-net-diag/Cargo.toml#2A2D]\n1:[package]\n2:name = \"spt-net-diag\"\n3:version.workspace = true\n4:edition = \"2021\"\n5:publish = false\n6:\n7:[dependencies]\n8:serde_json = \"1\"\n9:uuid = { version = \"1\", features = [\"v4\"] }\n10:crossbeam-channel = \"0.5\"\n11:spt-proto = { path = \"../spt-proto\" }\n12:netdev = \"=0.42.0\"\n13:netwatch = \"=0.16.0\"\n14:\n15:[target.'cfg(windows)'.dependencies]\n16:windows-sys = { version = \"0.59\", features = [\"Win32_Foundation\", \"Win32_System_Diagnostics_Debug\", \"Win32_System_Kernel\", \"Win32_System_Threading\", \"Win32_System_Memory\"] }\n17:\n18:[target.'cfg(unix)'.dependencies]\n19:libc = \"0.2\""}],"details":{"totalLines":19,"displayContent":{"text":"[package]\nname = \"spt-net-diag\"\nversion.workspace = true\nedition = \"2021\"\npublish = false\n\n[dependencies]\nserde_json = \"1\"\nuuid = { version = \"1\", features = [\"v4\"] }\ncrossbeam-channel = \"0.5\"\nspt-proto = { path = \"../spt-proto\" }\nnetdev = \"=0.42.0\"\nnetwatch = \"=0.16.0\"\n\n[target.'cfg(windows)'.dependencies]\nwindows-sys = { version = \"0.59\", features = [\"Win32_Foundation\", \"Win32_System_Diagnostics_Debug\", \"Win32_System_Kernel\", \"Win32_System_Threading\", \"Win32_System_Memory\"] }\n\n[target.'cfg(unix)'.dependencies]\nlibc = \"0.2\"","startLine":1,"lineNumbers":[1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19]},"fileSize":531,"meta":{"source":{"type":"path","value":"C:\\Users\\decid\\Documents\\projects\\spt-core\\.worktrees\\302-net-worker-stamps\\crates\\spt-net-diag\\Cargo.toml"}}},"isError":false,"timestamp":1789542508252}}
{"type":"message","id":"51323a3e","parentId":"dd07f33e","timestamp":"2026-09-16T07:08:28.266Z","message":{"role":"toolResult","toolCallId":"call_iGnWjHXuOW8QWnenBZ00gwwd|fc_0ba31c31d1cf7dc5016aaa406c214087d29e3742aac011eeaf","toolName":"grep","content":[{"type":"text","text":"[C:/Users/decid/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/windows-sys-0.59.0/src/Windows/Win32/System/Diagnostics/Debug/mod.rs#0467]\n 366:windows_targets::link!(\"dbghelp.dll\" \"system\" fn SymRegisterCallback(hprocess : super::super::super::Foundation:: HANDLE, callbackfunction : PSYMBOL_REGISTERED_CALLBACK, usercontext : *const core::ffi::c_void) -> super::super::super::Foundation:: BOOL);\n*367:windows_targets::link!(\"dbghelp.dll\" \"system\" fn SymRegisterCallback64(hprocess : super::super::super::Foundation:: HANDLE, callbackfunction : PSYMBOL_REGISTERED_CALLBACK64, usercontext : u64) -> super::super::super::Foundation:: BOOL);\n*368:windows_targets::link!(\"dbghelp.dll\" \"system\" fn SymRegisterCallbackW64(hprocess : super::super::super::Foundation:: HANDLE, callbackfunction : PSYMBOL_REGISTERED_CALLBACK64, usercontext : u64) -> super::super::super::Foundation:: BOOL);\n 369:#[cfg(target_arch = \"x86\")]\n 370:windows_targets::link!(\"dbghelp.dll\" \"system\" fn SymRegisterFunctionEntryCallback(hprocess : super::super::super::Foundation:: HANDLE, callbackfunction : PSYMBOL_FUNCENTRY_CALLBACK, usercontext : *const core::ffi::c_void) -> super::super::super::Foundation:: BOOL);\n 371:windows_targets::link!(\"dbghelp.dll\" \"system\" fn SymRegisterFunctionEntryCallback64(hprocess : super::super::super::Foundation:: HANDLE, callbackfunction : PSYMBOL_FUNCENTRY_CALLBACK64, usercontext : u64) -> super::super::super::Foundation:: BOOL);\n...\n 521:pub const CBA_MAP_JIT_SYMBOL: u32 = 2684354560u32;\n*522:pub const CBA_READ_MEMORY: u32 = 6u32;\n 523:pub const CBA_SET_OPTIONS: u32 = 8u32;\n 524:pub const CBA_SRCSRV_EVENT: u32 = 1073741824u32;\n 525:pub const CBA_SRCSRV_INFO: u32 = 536870912u32;\n...\n 1662:pub const SYMOPT_FLAT_DIRECTORY: u32 = 4194304u32;\n*1663:pub const SYMOPT_IGNORE_CVREC: u32 = 128u32;\n 1664:pub const SYMOPT_IGNORE_IMAGEDIR: u32 = 2097152u32;\n 1665:pub const SYMOPT_IGNORE_NT_SYMPATH: u32 = 4096u32;\n 1666:pub const SYMOPT_INCLUDE_32BIT_MODULES: u32 = 8192u32;\n...\n 1719:pub const SymNone: SYM_TYPE = 0i32;\n*1720:pub const SymPdb: SYM_TYPE = 3i32;\n 1721:pub const SymSym: SYM_TYPE = 6i32;\n 1722:pub const SymVirtual: SYM_TYPE = 8i32;\n 1723:pub const SystemInfoStream: MINIDUMP_STREAM_TYPE = 7i32;\n...\n 2758:#[derive(Clone, Copy)]\n*2759:pub struct IMAGEHLP_CBA_READ_MEMORY {\n 2760:    pub addr: u64,\n 2761:    pub buf: *mut core::ffi::c_void,\n 2762:    pub bytes: u32,\n...\n 5528:pub type PSYMBOL_REGISTERED_CALLBACK = Option<unsafe extern \"system\" fn(hprocess: super::super::super::Foundation::HANDLE, actioncode: u32, callbackdata: *const core::ffi::c_void, usercontext: *const core::ffi::c_void) -> super::super::super::Foundation::BOOL>;\n*5529:pub type PSYMBOL_REGISTERED_CALLBACK64 = Option<unsafe extern \"system\" fn(hprocess: super::super::super::Foundation::HANDLE, actioncode: u32, callbackdata: u64, usercontext: u64) -> super::super::super::Foundation::BOOL>;\n 5530:pub type PSYM_ENUMERATESYMBOLS_CALLBACK = Option<unsafe extern \"system\" fn(psyminfo: *const SYMBOL_INFO, symbolsize: u32, usercontext: *const core::ffi::c_void) -> super::super::super::Foundation::BOOL>;\n 5531:pub type PSYM_ENUMERATESYMBOLS_CALLBACKW = Option<unsafe extern \"system\" fn(psyminfo: *const SYMBOL_INFOW, symbolsize: u32, usercontext: *const core::ffi::c_void) -> super::super::super::Foundation::BOOL>;\n 5532:pub type PSYM_ENUMLINES_CALLBACK = Option<unsafe extern \"system\" fn(lineinfo: *const SRCCODEINFO, usercontext: *const core::ffi::c_void) -> super::super::super::Foundation::BOOL>;"}],"details":{"scopePath":"C:/Users/decid/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/windows-sys-0.59.0/src/Windows/Win32/System/Diagnostics/Debug/mod.rs","searchPath":"C:/Users/decid/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/windows-sys-0.59.0/src/Windows/Win32/System/Diagnostics/Debug/mod.rs","cwd":"C:\\Users\\decid\\Documents\\projects\\spt-core","matchCount":7,"fileCount":1,"files":["C:/Users/decid/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/windows-sys-0.59.0/src/Windows/Win32/System/Diagnostics/Debug/mod.rs"],"fileMatches":[{"path":"C:/Users/decid/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/windows-sys-0.59.0/src/Windows/Win32/System/Diagnostics/Debug/mod.rs","count":7}],"truncated":false,"displayContent":"  366│windows_targets::link!(\"dbghelp.dll\" \"system\" fn SymRegisterCallback(hprocess : super::super::super::Foundation:: HANDLE, callbackfunction : PSYMBOL_REGISTERED_CALLBACK, usercontext : *const core::ffi::c_void) -> super::super::super::Foundation:: BOOL);\n *367│windows_targets::link!(\"dbghelp.dll\" \"system\" fn SymRegisterCallback64(hprocess : super::super::super::Foundation:: HANDLE, callbackfunction : PSYMBOL_REGISTERED_CALLBACK64, usercontext : u64) -> super::super::super::Foundation:: BOOL);\n *368│windows_targets::link!(\"dbghelp.dll\" \"system\" fn SymRegisterCallbackW64(hprocess : super::super::super::Foundation:: HANDLE, callbackfunction : PSYMBOL_REGISTERED_CALLBACK64, usercontext : u64) -> super::super::super::Foundation:: BOOL);\n  369│#[cfg(target_arch = \"x86\")]\n  370│windows_targets::link!(\"dbghelp.dll\" \"system\" fn SymRegisterFunctionEntryCallback(hprocess : super::super::super::Foundation:: HANDLE, callbackfunction : PSYMBOL_FUNCENTRY_CALLBACK, usercontext : *const core::ffi::c_void) -> super::super::super::Foundation:: BOOL);\n  371│windows_targets::link!(\"dbghelp.dll\" \"system\" fn SymRegisterFunctionEntryCallback64(hprocess : super::super::super::Foundation:: HANDLE, callbackfunction : PSYMBOL_FUNCENTRY_CALLBACK64, usercontext : u64) -> super::super::super::Foundation:: BOOL);\n     │...\n  521│pub const CBA_MAP_JIT_SYMBOL: u32 = 2684354560u32;\n *522│pub const CBA_READ_MEMORY: u32 = 6u32;\n  523│pub const CBA_SET_OPTIONS: u32 = 8u32;\n  524│pub const CBA_SRCSRV_EVENT: u32 = 1073741824u32;\n  525│pub const CBA_SRCSRV_INFO: u32 = 536870912u32;\n     │...\n 1662│pub const SYMOPT_FLAT_DIRECTORY: u32 = 4194304u32;\n*1663│pub const SYMOPT_IGNORE_CVREC: u32 = 128u32;\n 1664│pub const SYMOPT_IGNORE_IMAGEDIR: u32 = 2097152u32;\n 1665│pub const SYMOPT_IGNORE_NT_SYMPATH: u32 = 4096u32;\n 1666│pub const SYMOPT_INCLUDE_32BIT_MODULES: u32 = 8192u32;\n     │...\n 1719│pub const SymNone: SYM_TYPE = 0i32;\n*1720│pub const SymPdb: SYM_TYPE = 3i32;\n 1721│pub const SymSym: SYM_TYPE = 6i32;\n 1722│pub const SymVirtual: SYM_TYPE = 8i32;\n 1723│pub const SystemInfoStream: MINIDUMP_STREAM_TYPE = 7i32;\n     │...\n 2758│#[derive(Clone, Copy)]\n*2759│pub struct IMAGEHLP_CBA_READ_MEMORY {\n 2760│    pub addr: u64,\n 2761│    pub buf: *mut core::ffi::c_void,\n 2762│    pub bytes: u32,\n     │...\n 5528│pub type PSYMBOL_REGISTERED_CALLBACK = Option<unsafe extern \"system\" fn(hprocess: super::super::super::Foundation::HANDLE, actioncode: u32, callbackdata: *const core::ffi::c_void, usercontext: *const core::ffi::c_void) -> super::super::super::Foundation::BOOL>;\n*5529│pub type PSYMBOL_REGISTERED_CALLBACK64 = Option<unsafe extern \"system\" fn(hprocess: super::super::super::Foundation::HANDLE, actioncode: u32, callbackdata: u64, usercontext: u64) -> super::super::super::Foundation::BOOL>;\n 5530│pub type PSYM_ENUMERATESYMBOLS_CALLBACK = Option<unsafe extern \"system\" fn(psyminfo: *const SYMBOL_INFO, symbolsize: u32, usercontext: *const core::ffi::c_void) -> super::super::super::Foundation::BOOL>;\n 5531│pub type PSYM_ENUMERATESYMBOLS_CALLBACKW = Option<unsafe extern \"system\" fn(psyminfo: *const SYMBOL_INFOW, symbolsize: u32, usercontext: *const core::ffi::c_void) -> super::super::super::Foundation::BOOL>;\n 5532│pub type PSYM_ENUMLINES_CALLBACK = Option<unsafe extern \"system\" fn(lineinfo: *const SRCCODEINFO, usercontext: *const core::ffi::c_void) -> super::super::super::Foundation::BOOL>;"},"isError":false,"timestamp":1789542508266}}
{"type":"message","id":"4d3c11b5","parentId":"51323a3e","timestamp":"2026-09-16T07:08:28.604Z","message":{"role":"toolResult","toolCallId":"call_Onqhk7Kjp5AG5olCRoWHB1vx|fc_0ba31c31d1cf7dc5016aaa406c214487d29b7af3c4ad3cd5f3","toolName":"read","content":[{"type":"text","text":"URL: https://learn.microsoft.com/en-us/windows/win32/api/dbghelp/ns-dbghelp-imagehlp_cba_read_memory\nContent-Type: text/markdown\nMethod: content-negotiation\nNotes: Content negotiation returned text/markdown\n\n---\n\n---\nlayout: Conceptual\ntitle: IMAGEHLP_CBA_READ_MEMORY (dbghelp.h) - Win32 apps | Microsoft Learn\ncanonicalUrl: https://learn.microsoft.com/en-us/windows/win32/api/dbghelp/ns-dbghelp-imagehlp_cba_read_memory\nadobe-target: true\nbreadcrumb_path: /windows/desktop/api/breadcrumb/toc.json\nuhfHeaderId: MSDocsHeader-WinDevCenter\nms.service: windows-api-desktop-tech\nms.subservice: sdk-api-reference\nms.topic: reference\nms.author: kbridge\nauthor: karl-bridge-microsoft\nfeedback_system: Standard\nfeedback_product_url: https://www.microsoft.com/en-us/windowsinsider/feedbackhub/fb\nfeedback_help_link_url: https://learn.microsoft.com/answers/tags/224/windows-api-win32/\nfeedback_help_link_type: get-help-at-qna\nUID: NS:dbghelp._IMAGEHLP_CBA_READ_MEMORY\ndescription: Contains information about a memory read operation.\nold-location: base\\imagehlp_cba_read_memory_str.htm\ntech.root: Debug\nms.assetid: c5115fdc-aca6-4293-9c2b-82fd64ec7cb6\nms.date: 2018-12-05T00:00:00.0000000Z\nms.keywords: '*PIMAGEHLP_CBA_READ_MEMORY, IMAGEHLP_CBA_READ_MEMORY, IMAGEHLP_CBA_READ_MEMORY structure, PIMAGEHLP_CBA_READ_MEMORY, PIMAGEHLP_CBA_READ_MEMORY structure pointer, _IMAGEHLP_CBA_READ_MEMORY, _win32_imagehlp_cba_read_memory_str, base.imagehlp_cba_read_memory_str, dbghelp/IMAGEHLP_CBA_READ_MEMORY, dbghelp/PIMAGEHLP_CBA_READ_MEMORY'\nreq.header: dbghelp.h\nreq.include-header: \nreq.target-type: Windows\nreq.target-min-winverclnt: \nreq.target-min-winversvr: \nreq.kmdf-ver: \nreq.umdf-ver: \nreq.ddi-compliance: \nreq.unicode-ansi: \nreq.idl: \nreq.max-support: \nreq.namespace: \nreq.assembly: \nreq.type-library: \nreq.lib: \nreq.dll: \nreq.irql: \ntargetos: Windows\nreq.typenames: IMAGEHLP_CBA_READ_MEMORY, *PIMAGEHLP_CBA_READ_MEMORY\nreq.redist: DbgHelp.dll 5.1 or later\nms.custom: 19H1\ntopic_type:\n- APIRef\n- kbSyntax\napi_type:\n- HeaderDef\napi_location:\n- DbgHelp.h\napi_name:\n- IMAGEHLP_CBA_READ_MEMORY\nlocale: en-us\ndocument_id: e6667bba-cbc0-f03f-7741-096d73cdd22c\ndocument_version_independent_id: 5e36db2b-f100-910c-7271-d7c75c784726\nupdated_at: 2024-02-22T19:54:00.0000000Z\noriginal_content_git_url: https://cpubwin.visualstudio.com/DefaultCollection/win32/_git/sdk-api-build?path=/sdk-api-src/content/dbghelp/ns-dbghelp-imagehlp_cba_read_memory.md&version=GBlive&_a=contents\ngitcommit: https://cpubwin.visualstudio.com/DefaultCollection/win32/_git/sdk-api-build/commit/9267262487657894a8af112d7165006fed5035a7?path=/sdk-api-src/content/dbghelp/ns-dbghelp-imagehlp_cba_read_memory.md&_a=contents\ngit_commit_id: 9267262487657894a8af112d7165006fed5035a7\nsite_name: Docs\ndepot_name: MSDN.sdk-api-build\npage_type: conceptual\ntoc_rel: toc.json\npdf_url_template: https://learn.microsoft.com/pdfstore/en-us/MSDN.sdk-api-build/{branchName}{pdfName}\nsearch.mshattr.devlang: c++\nword_count: 74\nasset_id: dbghelp/ns-dbghelp-imagehlp_cba_read_memory\nmoniker_range_name: \nmonikers: []\nitem_type: Content\nsource_path: sdk-api-src/content/dbghelp/ns-dbghelp-imagehlp_cba_read_memory.md\ncmProducts:\n- https://authoring-docs-microsoft.poolparty.biz/devrel/caec7b7f-4941-4578-b79f-c63b1c1f5af4\n- https://authoring-docs-microsoft.poolparty.biz/devrel/bcbcbad5-4208-4783-8035-8481272c98b8\nspProducts:\n- https://authoring-docs-microsoft.poolparty.biz/devrel/754dea88-f800-4835-b6b5-280cb5d81e88\n- https://authoring-docs-microsoft.poolparty.biz/devrel/43b2e5aa-8a6d-4de2-a252-692232e5edc8\nplatformId: 4694190d-ac58-d6be-1cd6-7fdcce4de4fe\n---\n\n# IMAGEHLP_CBA_READ_MEMORY (dbghelp.h) - Win32 apps | Microsoft Learn\n\nContains information about a memory read operation.\n\n## Syntax\n\n```cpp\ntypedef struct _IMAGEHLP_CBA_READ_MEMORY {\n  DWORD64 addr;\n  PVOID   buf;\n  DWORD   bytes;\n  DWORD   *bytesread;\n} IMAGEHLP_CBA_READ_MEMORY, *PIMAGEHLP_CBA_READ_MEMORY;\n```\n\n## Members\n\n`addr`\n\nThe address to be read.\n\n`buf`\n\nA pointer to a buffer that receives the memory read.\n\n`bytes`\n\nThe number of bytes to read.\n\n`bytesread`\n\nA pointer to a variable that receives the number of bytes read.\n\n## Requirements\n\n| Requirement | Value |\n| --- | --- |\n| **Header** | dbghelp.h |\n| **Redistributable** | DbgHelp.dll 5.1 or later |"}],"details":{"kind":"url","url":"https://learn.microsoft.com/en-us/windows/win32/api/dbghelp/ns-dbghelp-imagehlp_cba_read_memory","finalUrl":"https://learn.microsoft.com/en-us/windows/win32/api/dbghelp/ns-dbghelp-imagehlp_cba_read_memory","contentType":"text/markdown","method":"content-negotiation","truncated":false,"notes":["Content negotiation returned text/markdown"],"meta":{"source":{"type":"url","value":"https://learn.microsoft.com/en-us/windows/win32/api/dbghelp/ns-dbghelp-imagehlp_cba_read_memory"}}},"isError":false,"timestamp":1789542508602}}
{"type":"custom","customType":"tool_execution_start","data":{"toolCallId":"call_rv5QTB3haWXZo4K66AyF0XMb|ctc_0ba31c31d1cf7dc5016aaa40840ea887d29d8b2775cae6b7cc","toolName":"edit","startedAt":"2026-09-16T07:09:34.513Z"},"id":"bee6dcb9","parentId":"4d3c11b5","timestamp":"2026-09-16T07:09:34.513Z"}
{"type":"message","id":"b01e33f5","parentId":"bee6dcb9","timestamp":"2026-09-16T07:09:34.514Z","message":{"role":"assistant","content":[{"type":"thinking","thinking":"**Adding exact symbol options**\n\n**Refining frame metadata**"},{"type":"toolCall","id":"call_rv5QTB3haWXZo4K66AyF0XMb|ctc_0ba31c31d1cf7dc5016aaa40840ea887d29d8b2775cae6b7cc","name":"edit","arguments":{"input":"*** Begin Patch\n[.worktrees/302-net-worker-stamps/crates/spt-net-diag/src/stacks/windows.rs#08FB]\nCUT 5.=5\nPUT 24.=31:\n+            AddrModeFlat, GetThreadContext, ReadProcessMemory, StackWalk64, SymCleanup,\n+            SymFromAddr, SymFunctionTableAccess64, SymGetModuleBase64, SymGetModuleInfo64,\n+            SymGetOptions, SymInitializeW, SymRegisterCallback64, SymSetOptions, SymPdb,\n+            CBA_READ_MEMORY, CONTEXT, CONTEXT_FULL_AMD64, IMAGEHLP_CBA_READ_MEMORY,\n+            IMAGEHLP_MODULE64, STACKFRAME64, SYMBOL_INFO, SYMBOL_INFO_PACKAGE,\n+            SYMOPT_DISABLE_SYMSRV_AUTODETECT, SYMOPT_EXACT_SYMBOLS, SYMOPT_FAIL_CRITICAL_ERRORS,\n+            SYMOPT_IGNORE_CVREC, SYMOPT_IGNORE_NT_SYMPATH, SYMOPT_NO_PROMPTS, SYMOPT_UNDNAME,\n+        },\n+        Memory::{\n+            VirtualQuery, MEMORY_BASIC_INFORMATION, MEM_COMMIT, MEM_IMAGE, PAGE_GUARD,\n+            PAGE_NOACCESS,\n+        },\nPUT >66:\n+    context_valid: bool,\nPUT >76:\n+    initialization_us: u64,\n+    first_capture: bool,\nPUT >80:\n+        let started = Instant::now();\nPUT 106.=107:\n+        // An explicit search path and ignored CodeView path avoid inherited\n+        // symbol-server and build-machine PDB locations. Eager loading is timed\n+        // as initialization, not hidden inside the first stale capture.\nPUT 114.=129:\n+        let _options = SymbolOptions::new();\n+        unsafe {\n+            if SymInitializeW(process.0, path.as_ptr(), 1) == 0 {\n+                return Err(io::Error::last_os_error());\n+            }\n+            if SymRegisterCallback64(process.0, Some(symbol_callback), 0) == 0 {\n+                let error = GetLastError();\n+                SymCleanup(process.0);\n+                return Err(io::Error::from_raw_os_error(error as i32));\n+            }\n+        }\nPUT 130.=130:\n+        Ok(Self {\n+            workers,\n+            process,\n+            initialization_us: micros(started),\n+            first_capture: true,\n+        })\nPUT >142:\n+        let options = SymbolOptions::new();\n+        let symbol_started = Instant::now();\nPUT >147:\n+        let symbolization_us = micros(symbol_started);\n+        drop(options);\nPUT 150.=150:\n+        let first_capture = self.first_capture;\n+        self.first_capture = false;\n+        let mut result = json!({\nPUT >158:\n+                \"symbolization_us\": symbolization_us,\n+                \"initialization_us\": self.initialization_us,\n+                \"first_capture\": first_capture,\n+                \"captures_are_sequential\": true,\nPUT 162.=162:\n+        });\n+        // Include construction of the evidence value in the measured capture.\n+        result[\"capture_duration_ms\"] = json!(started.elapsed().as_millis() as u64);\n+        result\nPUT >173:\n+\n+// Options are process-global, not per symbol session. Apply the same bounded\n+// search and matching policy during capture as initialization, then restore.\n+// Callers hold DBGHELP throughout this guard's lifetime.\n+struct SymbolOptions(u32);\n+impl SymbolOptions {\n+    fn new() -> Self {\n+        unsafe {\n+            let old = SymGetOptions();\n+            SymSetOptions(\n+                SYMOPT_UNDNAME\n+                    | SYMOPT_FAIL_CRITICAL_ERRORS\n+                    | SYMOPT_NO_PROMPTS\n+                    | SYMOPT_IGNORE_NT_SYMPATH\n+                    | SYMOPT_IGNORE_CVREC\n+                    | SYMOPT_DISABLE_SYMSRV_AUTODETECT\n+                    | SYMOPT_EXACT_SYMBOLS,\n+            );\n+            Self(old)\n+        }\n+    }\n+}\n+impl Drop for SymbolOptions {\n+    fn drop(&mut self) {\n+        unsafe {\n+            SymSetOptions(self.0);\n+        }\n+    }\n+}\nPUT >243:\n+            context_valid: false,\nPUT >254:\n+        self.context_valid = false;\nPUT >288:\n+            self.context_valid = true;\nPUT 299.=299:\n+            if region.State != MEM_COMMIT || region.Protect & (PAGE_GUARD | PAGE_NOACCESS) != 0 {\nPUT >356:\n+            \"raw_registers\": if self.context_valid {\n+                Some(json!({\n+                    \"rip\": format!(\"0x{:016x}\", self.context.0.Rip),\n+                    \"rsp\": format!(\"0x{:016x}\", self.context.0.Rsp),\n+                    \"rbp\": format!(\"0x{:016x}\", self.context.0.Rbp)\n+                }))\n+            } else {\n+                None\n+            },\nPUT >378:\n+        // StackWalk64 mutates its context; retain the captured registers.\n+        let mut context = AlignedContext(self.context.0);\nPUT 397.=397:\n+                    (&mut context.0 as *mut CONTEXT).cast(),\nPUT >454:\n+\n+unsafe extern \"system\" fn symbol_callback(\n+    process: HANDLE,\n+    action: u32,\n+    data: u64,\n+    _context: u64,\n+) -> i32 {\n+    if action != CBA_READ_MEMORY || data == 0 {\n+        return 0;\n+    }\n+    unsafe {\n+        let request = &*(data as *const IMAGEHLP_CBA_READ_MEMORY);\n+        read_snapshot(process, request.addr, request.buf, request.bytes, request.bytesread)\n+    }\n+}\nPUT 467.=471:\n+        let view = READ_VIEW.get();\n+        if destination.is_null() {\n+            return 0;\n+        }\n+        if !view.is_null() {\n+            let view = &*view;\nPUT >484:\n+        }\nPUT >493:\n+            || region.State != MEM_COMMIT\n+            || region.Protect & (PAGE_GUARD | PAGE_NOACCESS) != 0\nPUT >496:\n+        let Some(offset) = address.checked_sub(region.BaseAddress as u64) else {\n+            return 0;\n+        };\n+        if offset > region.RegionSize as u64 || size as u64 > region.RegionSize as u64 - offset {\n+            return 0;\n+        }\nPUT 508.=508:\n+        i32::from(success != 0 && actual == size as usize)\nPUT >534:\n+        if module.SymType != SymPdb || module.PdbUnmatched != 0 || module.DbgUnmatched != 0 {\n+            errors.push(format!(\"matched PDB unavailable at 0x{pc:x}\"));\n+        }\n*** End Patch\n"},"customWireName":"edit"}],"api":"openai-codex-responses","provider":"openai-codex","model":"gpt-6-astra","usage":{"input":3098,"output":1739,"cacheRead":39680,"cacheWrite":0,"totalTokens":44517,"reasoningTokens":245,"cost":{"input":0.030980000000000004,"output":0.08695,"cacheRead":0.03968,"cacheWrite":0,"total":0.15761}},"stopReason":"toolUse","timestamp":1789542508618,"responseId":"resp_0ba31c31d1cf7dc5016aaa406cd36087d2a659e700e842b1c3","providerPayload":{"type":"openaiResponsesHistory","provider":"openai-codex","dt":true,"items":[{"id":"rs_0ba31c31d1cf7dc5016aaa407a455c87d28ac457d24c39deca","type":"reasoning","content":[],"encrypted_content":"gAAAAABqqkCEsnxK3cY2fHw0RJvFtkHSlL864vLpA7F9SmvGfbp45WetP7dxUyZUwBKFYfKWnoQCm1WKh4oqepasFH6NNS2d0Cmd7-NLtX2aTsEV72mkD1aa25ehTYnKIOaRNY9BQkn1gkcteAZ2H0fqIpajvIE4iYHPv7KH-XXLyLMioaqVeJoppn1SQ3mFGRZ8E4x3kScmaTGGq2hr1kDiDLFM1SmP7Re6KZZ1Kmi5HKiQV9XsCpA5J_4TNLG4kc3NrZtRI5DCVYnrKYxIZwTJB4nHP2-ZMbc_0qlra8oQlf1hAd_GxfDwq6JqbETUP4VcyYOQnzteNQhthwYl6_prtO9pxcGd8bOvXzdNe6ZUnGJciGjvsu3NRQyOArXeltSu9pZheFkZUOKldyhB4YD0OZBT34QnEJXXIrVJNjyE0icC4of4_Hi3f5YtPqkvAEzdZuwf5GEHXOVqawGBiEG7_VH_6j4a-JInIqK5UO7WGmShX_ewvaueTC7hYaQOE9ec_rs5b4hMZnHjkod1Vz-eAZ9UF1bHCIksa2KlRro5c9j1y9cz9mx1Fc3gcCCne7wfMl6QABIaJvyXh6Tq74sl7-334MhBhmnoeVEv5Kk9KQddn4jOKBbvGthVPaYGAM5K3vAGHMz3-qDNZ81toEJjbs6aEeGo1rfeTTIns5wOne5flConM7SFnXBxNuSFha6fNpPy-cIoBWZ9zyPRD0o_sgOLmH0vPkzc6yLDkSNn2blOw1jRg5iAZFtg30hKdb6Kn_q12JU76kP6xPfkREmwu571d8PKp3OKR0CeZsGob6DcI7FJfTbEbmoN6mYviHj7EwEToTcLBWO1vkhxdKo-vCWs7vDPfNiY0jLWYKRhkJZsC232lC_YbpJqQb93lxOv9noFOmP9tCxux9R-G7OoDWByE92vqpPTOT0fTVkK7ff8EkkHoIghK_thMv2SHfcFh4tE-AdpXRlcGXr2Fvh17F_3tCIt8q275qKk82yQqXVpizm2R2FXpPfe9EX7d_MvcoXLe17IstI5zaWsvdLbNr6OLLkfPaaofhngjsnG25cCGV0hjF9oL0ReMGjKYFnXAZZMfoeZh0JTh7vaOYAVgKInJ6O2eqnPH1KuPSQUDk-ve3vFMEMbR9otccanQD2JUfiT0TFhxGQlt1T5Elwzuk-t7YhMdjgbn4gZUuOsxUzvZOwkRjHTfqFnB_MHzcCeVphVDDQpXdxTaouQrsbvI2EodyDgpktKyGrRlAawQNzwDGt81P4ewSrrdOD0tMr51kOXk3OCIE5plK5FRu1HkrS43jZ0v0Ls2bObp86lZ2OEiJBwf8LlYLNbcwKK9zH4s4F62GdOytaYFEPtGXTi33Jk_cp2bWqAw0kxGdv3TDfyw1l1ChwUjv8ETWYa2WZt-ZHNpKEXe_k6mdDQuQdmK3VCX1VLguaZVqxM3MNOcgbvsHtXP0jBTYhvvOiQEljiTK3mVkhhG_3cyGm3mEvIuou_97uiP6pITbuGvbVJAmLBRWf-47HE9Whkz-yaKcG-DRHPARdM1Y3UdpP3SXcI3Fu_SaIQQiNvSkFFAuW0eGZmFRLTEaRLqH2gO2MXw_xdUkg6AxFES8k52LWVRcvjEeRbpbhNlG62yqYly6fZravvtnWTt4uQf8ggQe1gKOdwFEs9O8rxmhC1dF-6jC6KvlrhSpxJj_6rJJ5bU7E2oW2pv67caceqfh1H2SNhhqXxODs9oYUAarrwJnc3IiM2when1JhLR78CPjbeeJ78Ce97PjiviK8M_Gr815Nqr61OhjHAFXCgiHXdomAxwx0KQokL2fs-FgdtAwnuj8yDyPX4aNs6zUNSQTUgnUsgWKTH4GtLWLq6GSH5SxhzQQ9CyWPeZimTp5E3CDDBViC3Nihe0ZhvxetSeuxQcvNaqohQprbmMt535bJT8VG72rPwDlZQ71ZwRKADNaDM02-xGgDYmEhLZDNZLgGY7LitzhrsUq5wtBHyR1SnxLDkrU_Xs5AsMc4St1isIhbv_D5EFHw3pe5EwxArGm5heOmUIZDlp5RVtc7BonNolspAoItRZUB-_hvFJg-Qqn6y1iyWU3eaf7QFj9NmuUQjIAdNVwWCoV9n4ZS5zcw9ogf-o-MWuJKCp_qnKV86sxhpo1TipDfGdCOW_eDtuUI1LPsFaDOLZtWIWBEJPKyq8W0_xXfpidHQ6ghlJymSoeIUiTD1jpK1H5N6HHQ4mRhFMLdK9V0KMpAD4TOYX1TVirJgTo-UP4mon1e1EH5n91CKvRxRTVthj9Photd2D6MbwTAIqCOwKcLrT1EBU-63TxcmHBtlmA0dWmL3PtBqC_zAkzIQ2QhDE7arFKPtK0somrVuDuOFomSVZ_272_77_6W3ovYHyoBDZm9HZHc0KaITSpjS2xBX9KyNV87MZPRwHMFTrEFlXZDnwM6_GL0MxJf44d0PpI1gMT60obhQOPpny4Cg8_1m4S0eu76rvIwCYRrD3Wfb6CS0Fgj-dQ8SePqeljiCUNrzFm4_waVVzBQi9qgfBgat_Jcow7uIw88LtNvnR93xEDDPzdpCXnmgifosrT_ie-Zv-Myi9lITKTSzDGR_VY-3HAhD0XHbWUEYS87EvqvjHFayD0YxkmzHeVorWN7T79G8bdSpTYZY6uUgTcp1cmSDgDQv8OJQrykntHXWSSLYIkPr6tidSd-B7nq7LsWEFDyxrEAOmNatdp0IqAciZatTL39C5OX2-XJBgOvwpJsYgHziPBQiSnNLZGDOWIcT1zvISzJYObuDLiRVD6UT8rvtuwK8STzJ3ubMMimklSbsH4AoeegQ3E8GsheqRw619OH2PAhgVvnRDqvABzBP7NC3Ow1_YiR2ygUVaWQmjn1TRCZT_Yy_uXTBaA3w1zw59WShT11tIXi1kl-rVuHXo0ZWESdlfdI=","internal_chat_message_metadata_passthrough":{"turn_id":"c299dd6d-66f5-4e96-b4f5-387302236411"},"summary":[{"type":"summary_text","text":"**Adding exact symbol options**"},{"type":"summary_text","text":"**Refining frame metadata**"}],"metadata":{"turn_id":"c299dd6d-66f5-4e96-b4f5-387302236411"}},{"id":"ctc_0ba31c31d1cf7dc5016aaa40840ea887d29d8b2775cae6b7cc","type":"custom_tool_call","status":"completed","call_id":"call_rv5QTB3haWXZo4K66AyF0XMb","input":"*** Begin Patch\n[.worktrees/302-net-worker-stamps/crates/spt-net-diag/src/stacks/windows.rs#08FB]\nCUT 5.=5\nPUT 24.=31:\n+            AddrModeFlat, GetThreadContext, ReadProcessMemory, StackWalk64, SymCleanup,\n+            SymFromAddr, SymFunctionTableAccess64, SymGetModuleBase64, SymGetModuleInfo64,\n+            SymGetOptions, SymInitializeW, SymRegisterCallback64, SymSetOptions, SymPdb,\n+            CBA_READ_MEMORY, CONTEXT, CONTEXT_FULL_AMD64, IMAGEHLP_CBA_READ_MEMORY,\n+            IMAGEHLP_MODULE64, STACKFRAME64, SYMBOL_INFO, SYMBOL_INFO_PACKAGE,\n+            SYMOPT_DISABLE_SYMSRV_AUTODETECT, SYMOPT_EXACT_SYMBOLS, SYMOPT_FAIL_CRITICAL_ERRORS,\n+            SYMOPT_IGNORE_CVREC, SYMOPT_IGNORE_NT_SYMPATH, SYMOPT_NO_PROMPTS, SYMOPT_UNDNAME,\n+        },\n+        Memory::{\n+            VirtualQuery, MEMORY_BASIC_INFORMATION, MEM_COMMIT, MEM_IMAGE, PAGE_GUARD,\n+            PAGE_NOACCESS,\n+        },\nPUT >66:\n+    context_valid: bool,\nPUT >76:\n+    initialization_us: u64,\n+    first_capture: bool,\nPUT >80:\n+        let started = Instant::now();\nPUT 106.=107:\n+        // An explicit search path and ignored CodeView path avoid inherited\n+        // symbol-server and build-machine PDB locations. Eager loading is timed\n+        // as initialization, not hidden inside the first stale capture.\nPUT 114.=129:\n+        let _options = SymbolOptions::new();\n+        unsafe {\n+            if SymInitializeW(process.0, path.as_ptr(), 1) == 0 {\n+                return Err(io::Error::last_os_error());\n+            }\n+            if SymRegisterCallback64(process.0, Some(symbol_callback), 0) == 0 {\n+                let error = GetLastError();\n+                SymCleanup(process.0);\n+                return Err(io::Error::from_raw_os_error(error as i32));\n+            }\n+        }\nPUT 130.=130:\n+        Ok(Self {\n+            workers,\n+            process,\n+            initialization_us: micros(started),\n+            first_capture: true,\n+        })\nPUT >142:\n+        let options = SymbolOptions::new();\n+        let symbol_started = Instant::now();\nPUT >147:\n+        let symbolization_us = micros(symbol_started);\n+        drop(options);\nPUT 150.=150:\n+        let first_capture = self.first_capture;\n+        self.first_capture = false;\n+        let mut result = json!({\nPUT >158:\n+                \"symbolization_us\": symbolization_us,\n+                \"initialization_us\": self.initialization_us,\n+                \"first_capture\": first_capture,\n+                \"captures_are_sequential\": true,\nPUT 162.=162:\n+        });\n+        // Include construction of the evidence value in the measured capture.\n+        result[\"capture_duration_ms\"] = json!(started.elapsed().as_millis() as u64);\n+        result\nPUT >173:\n+\n+// Options are process-global, not per symbol session. Apply the same bounded\n+// search and matching policy during capture as initialization, then restore.\n+// Callers hold DBGHELP throughout this guard's lifetime.\n+struct SymbolOptions(u32);\n+impl SymbolOptions {\n+    fn new() -> Self {\n+        unsafe {\n+            let old = SymGetOptions();\n+            SymSetOptions(\n+                SYMOPT_UNDNAME\n+                    | SYMOPT_FAIL_CRITICAL_ERRORS\n+                    | SYMOPT_NO_PROMPTS\n+                    | SYMOPT_IGNORE_NT_SYMPATH\n+                    | SYMOPT_IGNORE_CVREC\n+                    | SYMOPT_DISABLE_SYMSRV_AUTODETECT\n+                    | SYMOPT_EXACT_SYMBOLS,\n+            );\n+            Self(old)\n+        }\n+    }\n+}\n+impl Drop for SymbolOptions {\n+    fn drop(&mut self) {\n+        unsafe {\n+            SymSetOptions(self.0);\n+        }\n+    }\n+}\nPUT >243:\n+            context_valid: false,\nPUT >254:\n+        self.context_valid = false;\nPUT >288:\n+            self.context_valid = true;\nPUT 299.=299:\n+            if region.State != MEM_COMMIT || region.Protect & (PAGE_GUARD | PAGE_NOACCESS) != 0 {\nPUT >356:\n+            \"raw_registers\": if self.context_valid {\n+                Some(json!({\n+                    \"rip\": format!(\"0x{:016x}\", self.context.0.Rip),\n+                    \"rsp\": format!(\"0x{:016x}\", self.context.0.Rsp),\n+                    \"rbp\": format!(\"0x{:016x}\", self.context.0.Rbp)\n+                }))\n+            } else {\n+                None\n+            },\nPUT >378:\n+        // StackWalk64 mutates its context; retain the captured registers.\n+        let mut context = AlignedContext(self.context.0);\nPUT 397.=397:\n+                    (&mut context.0 as *mut CONTEXT).cast(),\nPUT >454:\n+\n+unsafe extern \"system\" fn symbol_callback(\n+    process: HANDLE,\n+    action: u32,\n+    data: u64,\n+    _context: u64,\n+) -> i32 {\n+    if action != CBA_READ_MEMORY || data == 0 {\n+        return 0;\n+    }\n+    unsafe {\n+        let request = &*(data as *const IMAGEHLP_CBA_READ_MEMORY);\n+        read_snapshot(process, request.addr, request.buf, request.bytes, request.bytesread)\n+    }\n+}\nPUT 467.=471:\n+        let view = READ_VIEW.get();\n+        if destination.is_null() {\n+            return 0;\n+        }\n+        if !view.is_null() {\n+            let view = &*view;\nPUT >484:\n+        }\nPUT >493:\n+            || region.State != MEM_COMMIT\n+            || region.Protect & (PAGE_GUARD | PAGE_NOACCESS) != 0\nPUT >496:\n+        let Some(offset) = address.checked_sub(region.BaseAddress as u64) else {\n+            return 0;\n+        };\n+        if offset > region.RegionSize as u64 || size as u64 > region.RegionSize as u64 - offset {\n+            return 0;\n+        }\nPUT 508.=508:\n+        i32::from(success != 0 && actual == size as usize)\nPUT >534:\n+        if module.SymType != SymPdb || module.PdbUnmatched != 0 || module.DbgUnmatched != 0 {\n+            errors.push(format!(\"matched PDB unavailable at 0x{pc:x}\"));\n+        }\n*** End Patch\n","internal_chat_message_metadata_passthrough":{"create_time":1789542509.018748,"turn_id":"c299dd6d-66f5-4e96-b4f5-387302236411"},"name":"edit","metadata":{"turn_id":"c299dd6d-66f5-4e96-b4f5-387302236411"}}]},"duration":65889.7126000002,"ttft":13709.202599998564,"completedAt":1789542574510,"contextSnapshot":{"promptTokens":42778,"nonMessageTokens":16908,"compactionEpoch":0}}}
{"type":"message","id":"d3fe6f49","parentId":"b01e33f5","timestamp":"2026-09-16T07:09:34.565Z","message":{"role":"toolResult","toolCallId":"call_rv5QTB3haWXZo4K66AyF0XMb|ctc_0ba31c31d1cf7dc5016aaa40840ea887d29d8b2775cae6b7cc","toolName":"edit","content":[{"type":"text","text":"[.worktrees/302-net-worker-stamps/crates/spt-net-diag/src/stacks/windows.rs#2B99]\n3://! Image/unwind metadata is read live: unloaded modules, dynamically generated\n4://! code, missing PDBs, and stack-copy limits produce errors, not invented frames.\n5:\n6:use serde_json::{json, Value};\n\n22:        Diagnostics::Debug::{\n23:            AddrModeFlat, GetThreadContext, ReadProcessMemory, StackWalk64, SymCleanup,\n24:            SymFromAddr, SymFunctionTableAccess64, SymGetModuleBase64, SymGetModuleInfo64,\n25:            SymGetOptions, SymInitializeW, SymRegisterCallback64, SymSetOptions, SymPdb,\n26:            CBA_READ_MEMORY, CONTEXT, CONTEXT_FULL_AMD64, IMAGEHLP_CBA_READ_MEMORY,\n27:            IMAGEHLP_MODULE64, STACKFRAME64, SYMBOL_INFO, SYMBOL_INFO_PACKAGE,\n28:            SYMOPT_DISABLE_SYMSRV_AUTODETECT, SYMOPT_EXACT_SYMBOLS, SYMOPT_FAIL_CRITICAL_ERRORS,\n29:            SYMOPT_IGNORE_CVREC, SYMOPT_IGNORE_NT_SYMPATH, SYMOPT_NO_PROMPTS, SYMOPT_UNDNAME,\n30:        },\n31:        Memory::{\n32:            VirtualQuery, MEMORY_BASIC_INFORMATION, MEM_COMMIT, MEM_IMAGE, PAGE_GUARD,\n33:            PAGE_NOACCESS,\n34:        },\n35:        Threading::{\n36:            GetCurrentProcess, GetCurrentProcessId, GetCurrentThreadId, GetProcessIdOfThread,\n\n39:        },\n\n68:    bytes: Vec<u8>,\n69:    start: u64,\n70:    context_valid: bool,\n71:    len: usize,\n72:    suspended_us: u64,\n\n78:pub(crate) struct StackSampler {\n79:    workers: [Worker; 2],\n80:    process: Handle,\n81:    initialization_us: u64,\n82:    first_capture: bool,\n83:}\n84:\n85:impl StackSampler {\n86:    pub(crate) fn new(worker_tids: [u32; 2]) -> io::Result<Self> {\n87:        let started = Instant::now();\n88:        if worker_tids.contains(&0) || worker_tids[0] == worker_tids[1] {\n89:            return Err(io::Error::new(\n\n92:            ));\n93:        }\n\n111:        let process = Handle(process);\n112:        // A unique owned handle gives this sampler its own DbgHelp symbol session.\n113:        // An explicit search path and ignored CodeView path avoid inherited\n114:        // symbol-server and build-machine PDB locations. Eager loading is timed\n115:        // as initialization, not hidden inside the first stale capture.\n116:        let exe = std::env::current_exe()?;\n117:        let directory = exe\n118:            .parent()\n119:            .ok_or_else(|| io::Error::other(\"executable has no directory\"))?;\n120:        let path: Vec<u16> = directory.as_os_str().encode_wide().chain(Some(0)).collect();\n121:        let _lock = DBGHELP.lock().unwrap_or_else(|e| e.into_inner());\n122:        let _options = SymbolOptions::new();\n123:        unsafe {\n124:            if SymInitializeW(process.0, path.as_ptr(), 1) == 0 {\n125:                return Err(io::Error::last_os_error());\n…\n128:                let error = GetLastError();\n129:                SymCleanup(process.0);\n130:                return Err(io::Error::from_raw_os_error(error as i32));\n131:            }\n132:        }\n133:        Ok(Self {\n134:            workers,\n…\n137:            first_capture: true,\n138:        })\n139:    }\n140:\n141:    pub(crate) fn capture(&mut self) -> Value {\n\n149:        let lock = DBGHELP.lock().unwrap_or_else(|e| e.into_inner());\n150:        let symbol_lock_wait_us = micros(lock_started);\n151:        let options = SymbolOptions::new();\n152:        let symbol_started = Instant::now();\n153:        let workers: Vec<Value> = self\n154:            .workers\n155:            .iter_mut()\n156:            .map(|worker| worker.symbolize(self.process.0))\n157:            .collect();\n158:        let symbolization_us = micros(symbol_started);\n159:        drop(options);\n160:        drop(lock);\n161:        let suspend_duration_us: u64 = self.workers.iter().map(|w| w.suspended_us).sum();\n162:        let first_capture = self.first_capture;\n163:        self.first_capture = false;\n164:        let mut result = json!({\n165:            \"workers\": workers,\n166:            \"capture_duration_ms\": started.elapsed().as_millis() as u64,\n167:            \"perturbation\": {\n\n171:                \"stack_copy_phase_us\": copy_duration_us,\n172:                \"symbol_lock_wait_us\": symbol_lock_wait_us,\n173:                \"symbolization_us\": symbolization_us,\n174:                \"initialization_us\": self.initialization_us,\n175:                \"first_capture\": first_capture,\n176:                \"captures_are_sequential\": true,\n177:                \"stack_buffer_bytes_per_worker\": STACK_BYTES,\n178:                \"frame_limit\": MAX_FRAMES\n179:            }\n180:        });\n181:        // Include construction of the evidence value in the measured capture.\n182:        result[\"capture_duration_ms\"] = json!(started.elapsed().as_millis() as u64);\n183:        result\n184:    }\n185:}\n\n187:impl Drop for StackSampler {\n\n194:}\n195:\n196:// Options are process-global, not per symbol session. Apply the same bounded\n197:// search and matching policy during capture as initialization, then restore.\n…\n223:}\n224:\n225:fn micros(start: Instant) -> u64 {\n226:    start.elapsed().as_micros().min(u64::MAX as u128) as u64\n227:}\n\n292:            bytes,\n293:            start: 0,\n294:            context_valid: false,\n295:            len: 0,\n296:            suspended_us: 0,\n304:        self.len = 0;\n305:        self.start = 0;\n306:        self.context_valid = false;\n307:        self.suspended_us = 0;\n308:        self.previous_suspend_count = None;\n\n338:            if GetThreadContext(self.handle.0, &mut self.context.0) == 0 {\n339:                return Err((\"GetThreadContext\", GetLastError()));\n340:            }\n341:            self.context_valid = true;\n342:            self.start = self.context.0.Rsp;\n343:            let mut region: MEMORY_BASIC_INFORMATION = zeroed();\n344:            if VirtualQuery(\n\n349:            {\n350:                return Err((\"VirtualQuery(stack)\", GetLastError()));\n351:            }\n352:            if region.State != MEM_COMMIT || region.Protect & (PAGE_GUARD | PAGE_NOACCESS) != 0 {\n353:                return Err((\"stack is not committed readable memory\", 0));\n354:            }\n408:            \"frames\": frames,\n409:            \"raw_pcs\": raw_pcs,\n410:            \"raw_registers\": if self.context_valid {\n411:                Some(json!({\n…\n417:                None\n418:            },\n419:            \"progress_counter\": null,\n420:            \"error\": if errors.is_empty() { None } else { Some(errors.join(\"; \")) },\n439:        let _view = ReadViewGuard::new(&view);\n440:        let captured_pc = self.context.0.Rip;\n441:        // StackWalk64 mutates its context; retain the captured registers.\n442:        let mut context = AlignedContext(self.context.0);\n443:        let mut frame: STACKFRAME64 = unsafe { zeroed() };\n444:        frame.AddrPC.Offset = self.context.0.Rip;\n459:                    self.handle.0,\n460:                    &mut frame,\n461:                    (&mut context.0 as *mut CONTEXT).cast(),\n462:                    Some(read_snapshot),\n463:                    Some(SymFunctionTableAccess64),\n\n514:impl Drop for ReadViewGuard {\n\n518:}\n519:\n520:unsafe extern \"system\" fn symbol_callback(\n521:    process: HANDLE,\n…\n533:}\n534:\n535:unsafe extern \"system\" fn read_snapshot(\n536:    process: HANDLE,\n\n541:) -> i32 {\n542:    unsafe {\n543:        if !read.is_null() {\n\n545:        }\n546:        let view = READ_VIEW.get();\n547:        if destination.is_null() {\n548:            return 0;\n549:        }\n550:        if !view.is_null() {\n551:            let view = &*view;\n552:        if let Some(offset) = address.checked_sub(view.start) {\n553:            if offset <= view.len as u64 && size as u64 <= view.len as u64 - offset {\n563:            }\n564:        }\n565:        }\n566:        // Never fall back to the now-running worker's stack/heap. Only image\n567:        // mappings may supply live code and unwind metadata outside our copy.\n\n569:        if VirtualQuery(\n\n573:        ) == 0\n574:            || region.Type != MEM_IMAGE\n575:            || region.State != MEM_COMMIT\n576:            || region.Protect & (PAGE_GUARD | PAGE_NOACCESS) != 0\n577:        {\n578:            return 0;\n579:        }\n580:        let Some(offset) = address.checked_sub(region.BaseAddress as u64) else {\n581:            return 0;\n…\n584:            return 0;\n585:        }\n586:        let mut actual = 0;\n587:        let success = ReadProcessMemory(\n\n593:        );\n594:        if !read.is_null() {\n595:            *read = actual as u32;\n596:        }\n597:        i32::from(success != 0 && actual == size as usize)\n598:    }\n599:}\n622:    module.SizeOfStruct = size_of::<IMAGEHLP_MODULE64>() as u32;\n623:    let module_name = if unsafe { SymGetModuleInfo64(process, pc, &mut module) } != 0 {\n624:        if module.SymType != SymPdb || module.PdbUnmatched != 0 || module.DbgUnmatched != 0 {\n625:            errors.push(format!(\"matched PDB unavailable at 0x{pc:x}\"));\n626:        }\n627:        let bytes: Vec<u8> = module\n628:            .ModuleName\n629:            .iter()\n630:            .take_while(|&&c| c != 0)\n631:            .map(|&c| c as u8)\n632:            .collect();\n\n634:    } else {\n\n638:    };"}],"details":{"diff":" 3|//! Image/unwind metadata is read live: unloaded modules, dynamically generated\n 4|//! code, missing PDBs, and stack-copy limits produce errors, not invented frames.\n-5|// REQ-RC-HITCH-BOUNDARY-STAMPS\n 6|\n 7|use serde_json::{json, Value};\n\n 23|        Diagnostics::Debug::{\n 24|            AddrModeFlat, GetThreadContext, ReadProcessMemory, StackWalk64, SymCleanup,\n 25|            SymFromAddr, SymFunctionTableAccess64, SymGetModuleBase64, SymGetModuleInfo64,\n-26|            SymGetOptions, SymInitializeW, SymSetOptions, CONTEXT, CONTEXT_FULL_AMD64,\n+25|            SymGetOptions, SymInitializeW, SymRegisterCallback64, SymSetOptions, SymPdb,\n+26|            CBA_READ_MEMORY, CONTEXT, CONTEXT_FULL_AMD64, IMAGEHLP_CBA_READ_MEMORY,\n 27|            IMAGEHLP_MODULE64, STACKFRAME64, SYMBOL_INFO, SYMBOL_INFO_PACKAGE,\n-28|            SYMOPT_DEFERRED_LOADS, SYMOPT_FAIL_CRITICAL_ERRORS, SYMOPT_IGNORE_NT_SYMPATH,\n-29|            SYMOPT_NO_PROMPTS, SYMOPT_UNDNAME,\n+28|            SYMOPT_DISABLE_SYMSRV_AUTODETECT, SYMOPT_EXACT_SYMBOLS, SYMOPT_FAIL_CRITICAL_ERRORS,\n+29|            SYMOPT_IGNORE_CVREC, SYMOPT_IGNORE_NT_SYMPATH, SYMOPT_NO_PROMPTS, SYMOPT_UNDNAME,\n 30|        },\n-31|        Memory::{VirtualQuery, MEMORY_BASIC_INFORMATION, MEM_COMMIT, MEM_IMAGE, PAGE_GUARD},\n+31|        Memory::{\n+32|            VirtualQuery, MEMORY_BASIC_INFORMATION, MEM_COMMIT, MEM_IMAGE, PAGE_GUARD,\n+33|            PAGE_NOACCESS,\n+34|        },\n 32|        Threading::{\n 33|            GetCurrentProcess, GetCurrentProcessId, GetCurrentThreadId, GetProcessIdOfThread,\n\n 36|        },\n\n 65|    bytes: Vec<u8>,\n 66|    start: u64,\n+70|    context_valid: bool,\n 67|    len: usize,\n 68|    suspended_us: u64,\n\n 74|pub(crate) struct StackSampler {\n 75|    workers: [Worker; 2],\n 76|    process: Handle,\n+81|    initialization_us: u64,\n+82|    first_capture: bool,\n 77|}\n 78|\n 79|impl StackSampler {\n 80|    pub(crate) fn new(worker_tids: [u32; 2]) -> io::Result<Self> {\n+87|        let started = Instant::now();\n 81|        if worker_tids.contains(&0) || worker_tids[0] == worker_tids[1] {\n 82|            return Err(io::Error::new(\n\n 85|            ));\n 86|        }\n\n 104|        let process = Handle(process);\n 105|        // A unique owned handle gives this sampler its own DbgHelp symbol session.\n-106|        // Explicit local search path excludes inherited symbol-server URLs. Eager\n-107|        // loading keeps the initial PDB parse outside the timed stale capture.\n+113|        // An explicit search path and ignored CodeView path avoid inherited\n+114|        // symbol-server and build-machine PDB locations. Eager loading is timed\n+115|        // as initialization, not hidden inside the first stale capture.\n 108|        let exe = std::env::current_exe()?;\n 109|        let directory = exe\n 110|            .parent()\n 111|            .ok_or_else(|| io::Error::other(\"executable has no directory\"))?;\n 112|        let path: Vec<u16> = directory.as_os_str().encode_wide().chain(Some(0)).collect();\n 113|        let _lock = DBGHELP.lock().unwrap_or_else(|e| e.into_inner());\n+122|        let _options = SymbolOptions::new();\n 114|        unsafe {\n-115|            let old = SymGetOptions();\n-116|            SymSetOptions(\n-117|                (old | SYMOPT_UNDNAME\n-118|                    | SYMOPT_FAIL_CRITICAL_ERRORS\n-119|                    | SYMOPT_NO_PROMPTS\n-120|                    | SYMOPT_IGNORE_NT_SYMPATH)\n-121|                    & !SYMOPT_DEFERRED_LOADS,\n-122|            );\n-123|            let initialized = SymInitializeW(process.0, path.as_ptr(), 1);\n-124|            let error = GetLastError();\n-125|            SymSetOptions(old);\n-126|            if initialized == 0 {\n+124|            if SymInitializeW(process.0, path.as_ptr(), 1) == 0 {\n+125|                return Err(io::Error::last_os_error());\n+126|            }\n+127|            if SymRegisterCallback64(process.0, Some(symbol_callback), 0) == 0 {\n+128|                let error = GetLastError();\n+129|                SymCleanup(process.0);\n 127|                return Err(io::Error::from_raw_os_error(error as i32));\n 128|            }\n 129|        }\n-130|        Ok(Self { workers, process })\n+133|        Ok(Self {\n+134|            workers,\n+135|            process,\n+136|            initialization_us: micros(started),\n+137|            first_capture: true,\n+138|        })\n 131|    }\n 132|\n 133|    pub(crate) fn capture(&mut self) -> Value {\n\n 141|        let lock = DBGHELP.lock().unwrap_or_else(|e| e.into_inner());\n 142|        let symbol_lock_wait_us = micros(lock_started);\n+151|        let options = SymbolOptions::new();\n+152|        let symbol_started = Instant::now();\n 143|        let workers: Vec<Value> = self\n 144|            .workers\n 145|            .iter_mut()\n 146|            .map(|worker| worker.symbolize(self.process.0))\n 147|            .collect();\n+158|        let symbolization_us = micros(symbol_started);\n+159|        drop(options);\n 148|        drop(lock);\n 149|        let suspend_duration_us: u64 = self.workers.iter().map(|w| w.suspended_us).sum();\n-150|        json!({\n+162|        let first_capture = self.first_capture;\n+163|        self.first_capture = false;\n+164|        let mut result = json!({\n 151|            \"workers\": workers,\n 152|            \"capture_duration_ms\": started.elapsed().as_millis() as u64,\n 153|            \"perturbation\": {\n\n 157|                \"stack_copy_phase_us\": copy_duration_us,\n 158|                \"symbol_lock_wait_us\": symbol_lock_wait_us,\n+173|                \"symbolization_us\": symbolization_us,\n+174|                \"initialization_us\": self.initialization_us,\n+175|                \"first_capture\": first_capture,\n+176|                \"captures_are_sequential\": true,\n 159|                \"stack_buffer_bytes_per_worker\": STACK_BYTES,\n 160|                \"frame_limit\": MAX_FRAMES\n 161|            }\n-162|        })\n+180|        });\n+181|        // Include construction of the evidence value in the measured capture.\n+182|        result[\"capture_duration_ms\"] = json!(started.elapsed().as_millis() as u64);\n+183|        result\n 163|    }\n 164|}\n\n 166|impl Drop for StackSampler {\n\n 173|}\n 174|\n+196|// Options are process-global, not per symbol session. Apply the same bounded\n+197|// search and matching policy during capture as initialization, then restore.\n+198|// Callers hold DBGHELP throughout this guard's lifetime.\n+199|struct SymbolOptions(u32);\n+200|impl SymbolOptions {\n+201|    fn new() -> Self {\n+202|        unsafe {\n+203|            let old = SymGetOptions();\n+204|            SymSetOptions(\n+205|                SYMOPT_UNDNAME\n+206|                    | SYMOPT_FAIL_CRITICAL_ERRORS\n+207|                    | SYMOPT_NO_PROMPTS\n+208|                    | SYMOPT_IGNORE_NT_SYMPATH\n+209|                    | SYMOPT_IGNORE_CVREC\n+210|                    | SYMOPT_DISABLE_SYMSRV_AUTODETECT\n+211|                    | SYMOPT_EXACT_SYMBOLS,\n+212|            );\n+213|            Self(old)\n+214|        }\n+215|    }\n+216|}\n+217|impl Drop for SymbolOptions {\n+218|    fn drop(&mut self) {\n+219|        unsafe {\n+220|            SymSetOptions(self.0);\n+221|        }\n+222|    }\n+223|}\n+224|\n 175|fn micros(start: Instant) -> u64 {\n 176|    start.elapsed().as_micros().min(u64::MAX as u128) as u64\n 177|}\n\n 242|            bytes,\n 243|            start: 0,\n+294|            context_valid: false,\n 244|            len: 0,\n 245|            suspended_us: 0,\n 253|        self.len = 0;\n 254|        self.start = 0;\n+306|        self.context_valid = false;\n 255|        self.suspended_us = 0;\n 256|        self.previous_suspend_count = None;\n\n 286|            if GetThreadContext(self.handle.0, &mut self.context.0) == 0 {\n 287|                return Err((\"GetThreadContext\", GetLastError()));\n 288|            }\n+341|            self.context_valid = true;\n 289|            self.start = self.context.0.Rsp;\n 290|            let mut region: MEMORY_BASIC_INFORMATION = zeroed();\n 291|            if VirtualQuery(\n\n 296|            {\n 297|                return Err((\"VirtualQuery(stack)\", GetLastError()));\n 298|            }\n-299|            if region.State != MEM_COMMIT || region.Protect & PAGE_GUARD != 0 {\n+352|            if region.State != MEM_COMMIT || region.Protect & (PAGE_GUARD | PAGE_NOACCESS) != 0 {\n 300|                return Err((\"stack is not committed readable memory\", 0));\n 301|            }\n 355|            \"frames\": frames,\n 356|            \"raw_pcs\": raw_pcs,\n+410|            \"raw_registers\": if self.context_valid {\n+411|                Some(json!({\n+412|                    \"rip\": format!(\"0x{:016x}\", self.context.0.Rip),\n+413|                    \"rsp\": format!(\"0x{:016x}\", self.context.0.Rsp),\n+414|                    \"rbp\": format!(\"0x{:016x}\", self.context.0.Rbp)\n+415|                }))\n+416|            } else {\n+417|                None\n+418|            },\n 357|            \"progress_counter\": null,\n 358|            \"error\": if errors.is_empty() { None } else { Some(errors.join(\"; \")) },\n 377|        let _view = ReadViewGuard::new(&view);\n 378|        let captured_pc = self.context.0.Rip;\n+441|        // StackWalk64 mutates its context; retain the captured registers.\n+442|        let mut context = AlignedContext(self.context.0);\n 379|        let mut frame: STACKFRAME64 = unsafe { zeroed() };\n 380|        frame.AddrPC.Offset = self.context.0.Rip;\n 395|                    self.handle.0,\n 396|                    &mut frame,\n-397|                    (&mut self.context.0 as *mut CONTEXT).cast(),\n+461|                    (&mut context.0 as *mut CONTEXT).cast(),\n 398|                    Some(read_snapshot),\n 399|                    Some(SymFunctionTableAccess64),\n\n 450|impl Drop for ReadViewGuard {\n\n 454|}\n 455|\n+520|unsafe extern \"system\" fn symbol_callback(\n+521|    process: HANDLE,\n+522|    action: u32,\n+523|    data: u64,\n+524|    _context: u64,\n+525|) -> i32 {\n+526|    if action != CBA_READ_MEMORY || data == 0 {\n+527|        return 0;\n+528|    }\n+529|    unsafe {\n+530|        let request = &*(data as *const IMAGEHLP_CBA_READ_MEMORY);\n+531|        read_snapshot(process, request.addr, request.buf, request.bytes, request.bytesread)\n+532|    }\n+533|}\n+534|\n 456|unsafe extern \"system\" fn read_snapshot(\n 457|    process: HANDLE,\n\n 462|) -> i32 {\n 463|    unsafe {\n 464|        if !read.is_null() {\n\n 466|        }\n 467|        let view = READ_VIEW.get();\n-468|        if view.is_null() || destination.is_null() {\n+547|        if destination.is_null() {\n 469|            return 0;\n 470|        }\n-471|        let view = &*view;\n+550|        if !view.is_null() {\n+551|            let view = &*view;\n 472|        if let Some(offset) = address.checked_sub(view.start) {\n 473|            if offset <= view.len as u64 && size as u64 <= view.len as u64 - offset {\n 483|            }\n 484|        }\n+565|        }\n 485|        // Never fall back to the now-running worker's stack/heap. Only image\n 486|        // mappings may supply live code and unwind metadata outside our copy.\n\n 488|        if VirtualQuery(\n\n 492|        ) == 0\n 493|            || region.Type != MEM_IMAGE\n+575|            || region.State != MEM_COMMIT\n+576|            || region.Protect & (PAGE_GUARD | PAGE_NOACCESS) != 0\n 494|        {\n 495|            return 0;\n 496|        }\n+580|        let Some(offset) = address.checked_sub(region.BaseAddress as u64) else {\n+581|            return 0;\n+582|        };\n+583|        if offset > region.RegionSize as u64 || size as u64 > region.RegionSize as u64 - offset {\n+584|            return 0;\n+585|        }\n 497|        let mut actual = 0;\n 498|        let success = ReadProcessMemory(\n\n 504|        );\n 505|        if !read.is_null() {\n 506|            *read = actual as u32;\n 507|        }\n-508|        success\n+597|        i32::from(success != 0 && actual == size as usize)\n 509|    }\n 510|}\n 533|    module.SizeOfStruct = size_of::<IMAGEHLP_MODULE64>() as u32;\n 534|    let module_name = if unsafe { SymGetModuleInfo64(process, pc, &mut module) } != 0 {\n+624|        if module.SymType != SymPdb || module.PdbUnmatched != 0 || module.DbgUnmatched != 0 {\n+625|            errors.push(format!(\"matched PDB unavailable at 0x{pc:x}\"));\n+626|        }\n 535|        let bytes: Vec<u8> = module\n 536|            .ModuleName\n 537|            .iter()\n 538|            .take_while(|&&c| c != 0)\n 539|            .map(|&c| c as u8)\n 540|            .collect();\n\n 542|    } else {\n\n 546|    };","firstChangedLine":5,"op":"update","path":"C:\\Users\\decid\\Documents\\projects\\spt-core\\.worktrees\\302-net-worker-stamps\\crates\\spt-net-diag\\src\\stacks\\windows.rs","snapshotsPruned":true},"isError":false,"timestamp":1789542574564}}
{"type":"message","id":"c165659a","parentId":"d3fe6f49","timestamp":"2026-09-16T07:09:34.623Z","message":{"role":"user","content":"Current interruptible wait interrupted: IRC message from parent agent `Main`.\n\nParent IRC message:\n\nDo not add unbounded ResumeThread retries or process termination. Fix the concrete callback/options/raw evidence issues. For failed resume of a still-live owned handle, leave the unresolved safety case explicit rather than claim <=100ms or proceed into allocations as safe. Report exact native failure path and narrow options; field staging remains unapproved until safety is resolved. A short bounded kernel-only retry is acceptable, not an indefinite loop.","attribution":"agent","timestamp":1789542558107,"steering":true}}
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{"type":"message","id":"dc7aa926","parentId":"e12433b8","timestamp":"2026-09-16T07:10:09.241Z","message":{"role":"assistant","content":[{"type":"thinking","thinking":"**Refining resume retry handling**\n\n**Refining retry error tracking**\n\n**Reporting unresolved blocker**"},{"type":"toolCall","id":"call_oPt7yAwrZIcWOz5T6Rm0vRgj|fc_0ba31c31d1cf7dc5016aaa40d1085087d2b131fa1a4c76ea62","name":"read","arguments":{"i":"Reading remaining edit anchors","path":".worktrees/302-net-worker-stamps/crates/spt-net-diag/src/stacks/windows.rs:229-253,320-335,380-396,542-565,645-722"},"intent":"Reading remaining edit 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{"type":"message","id":"bafcb904","parentId":"dc7aa926","timestamp":"2026-09-16T07:10:09.249Z","message":{"role":"toolResult","toolCallId":"call_oPt7yAwrZIcWOz5T6Rm0vRgj|fc_0ba31c31d1cf7dc5016aaa40d1085087d2b131fa1a4c76ea62","toolName":"read","content":[{"type":"text","text":"[.worktrees/302-net-worker-stamps/crates/spt-net-diag/src/stacks/windows.rs#2B99]\n229:// Successful suspension owns precisely one suspend-count increment. Drop is the\n230:// fallback for all early returns/unwinds; explicit resume records OS failure.\n231:struct ResumeGuard {\n232:    handle: HANDLE,\n233:    armed: bool,\n234:}\n235:impl ResumeGuard {\n236:    fn resume(&mut self) -> Option<u32> {\n237:        if unsafe { ResumeThread(self.handle) } == u32::MAX {\n238:            Some(unsafe { GetLastError() })\n239:        } else {\n240:            self.armed = false;\n241:            None\n242:        }\n243:    }\n244:}\n245:impl Drop for ResumeGuard {\n246:    fn drop(&mut self) {\n247:        if self.armed {\n248:            unsafe {\n249:                ResumeThread(self.handle);\n250:            }\n251:        }\n252:    }\n253:}\n…\n303:    fn copy_stack(&mut self, process: HANDLE) {\n…\n319:        if previous == u32::MAX {\n320:            self.copy_error = Some((\"SuspendThread\", unsafe { GetLastError() }));\n321:            return;\n322:        }\n323:        let mut resume = ResumeGuard {\n324:            handle: self.handle.0,\n325:            armed: true,\n326:        };\n327:        self.previous_suspend_count = Some(previous);\n328:        // From here to resume: fixed-size values, bounded memory copy, kernel\n329:        // APIs and QPC only. No allocation, formatting, logging, or mutexes.\n330:        self.copy_error = unsafe { self.copy_suspended(process) }.err();\n331:        self.resume_error = resume.resume();\n332:        drop(resume);\n333:        self.suspended_us = micros(began);\n334:    }\n335:\n336:    unsafe fn copy_suspended(&mut self, process: HANDLE) -> Result<(), (&'static str, u32)> {\n337:        unsafe {\n…\n380:        }\n381:    }\n382:\n383:    fn symbolize(&mut self, process: HANDLE) -> Value {\n384:        let mut errors = Vec::new();\n385:        if let Some((call, code)) = self.copy_error {\n386:            errors.push(format!(\"{call}: Win32 {code}\"));\n387:        }\n388:        if let Some(code) = self.resume_error {\n389:            errors.push(format!(\"ResumeThread: Win32 {code}; guard retried\"));\n390:        }\n391:        if self.previous_suspend_count.is_some_and(|count| count != 0) {\n392:            errors.push(\"worker was already suspended; original count preserved\".into());\n393:        }\n394:        let mut frames = Vec::new();\n395:        let mut raw_pcs = Vec::new();\n396:        if self.len != 0 {\n…\n398:        }\n…\n425:    }\n…\n542:    unsafe {\n543:        if !read.is_null() {\n544:            *read = 0;\n545:        }\n546:        let view = READ_VIEW.get();\n547:        if destination.is_null() {\n548:            return 0;\n549:        }\n550:        if !view.is_null() {\n551:            let view = &*view;\n552:        if let Some(offset) = address.checked_sub(view.start) {\n553:            if offset <= view.len as u64 && size as u64 <= view.len as u64 - offset {\n554:                ptr::copy_nonoverlapping(\n555:                    view.bytes.add(offset as usize),\n556:                    destination.cast::<u8>(),\n557:                    size as usize,\n558:                );\n559:                if !read.is_null() {\n560:                    *read = size;\n561:                }\n562:                return 1;\n563:            }\n564:        }\n565:        }\n…\n598:    }\n…\n645:fn is_tokio_idle(frames: &[String]) -> bool {\n646:    // Require an uninterrupted known wait chain into actual Tokio park code.\n647:    // A user waker can run synchronously beneath reactor park and itself block;\n648:    // an arbitrary intervening frame therefore prevents the idle verdict.\n649:    let Some(first) = frames.first() else {\n650:        return false;\n651:    };\n652:    if ![\n653:        \"!NtWaitForSingleObject\",\n654:        \"!NtWaitForMultipleObjects\",\n655:        \"!NtWaitForAlertByThreadId\",\n656:        \"!NtRemoveIoCompletion\",\n657:    ]\n658:    .iter()\n659:    .any(|symbol| first.contains(symbol))\n660:    {\n661:        return false;\n662:    }\n663:    for frame in frames.iter().skip(1) {\n664:        if [\n665:            \"tokio::runtime::park::Inner::park\",\n666:            \"tokio::runtime::io::driver::Driver::park\",\n667:        ]\n668:        .iter()\n669:        .any(|symbol| frame.contains(symbol))\n670:        {\n671:            return true;\n672:        }\n673:        if ![\n674:            \"!WaitForSingleObject\",\n675:            \"!WaitForMultipleObjects\",\n676:            \"!WaitOnAddress\",\n677:            \"!RtlWaitOnAddress\",\n678:            \"!RtlSleepConditionVariable\",\n679:            \"!SleepConditionVariable\",\n680:            \"!GetQueuedCompletionStatus\",\n681:            \"std::sys::sync::condvar::windows::Condvar::wait\",\n682:            \"std::sys::sync::thread_parking::windows::Parker::park\",\n683:            \"std::sync::poison::condvar::Condvar::wait\",\n684:            \"mio::sys::windows::selector::Selector::select\",\n685:            \"mio::sys::windows::iocp::CompletionPort::get\",\n686:            \"mio::poll::Poll::poll\",\n687:        ]\n688:        .iter()\n689:        .any(|symbol| frame.contains(symbol))\n690:        {\n691:            return false;\n692:        }\n693:    }\n694:    false\n695:}\n696:\n697:#[cfg(test)]\n698:mod tests {\n699:    use super::is_tokio_idle;\n700:\n701:    #[test]\n702:    fn generic_wait_and_active_reactor_do_not_prove_idle() {\n703:        assert!(!is_tokio_idle(&[\"ntdll!NtWaitForSingleObject\".into()]));\n704:        assert!(!is_tokio_idle(&[\n705:            \"ntdll!NtWaitForSingleObject\".into(),\n706:            \"spt!tokio::runtime::io::driver::Driver::turn\".into(),\n707:        ]));\n708:        assert!(is_tokio_idle(&[\n709:            \"ntdll!NtRemoveIoCompletionEx\".into(),\n710:            \"spt!tokio::runtime::io::driver::Driver::park\".into(),\n711:        ]));\n712:        assert!(!is_tokio_idle(&[\n713:            \"spt!application_callback\".into(),\n714:            \"spt!tokio::runtime::io::driver::Driver::park\".into(),\n715:        ]));\n716:        assert!(!is_tokio_idle(&[\n717:            \"ntdll!NtWaitForSingleObject\".into(),\n718:            \"spt!application_blocking_waker\".into(),\n719:            \"spt!tokio::runtime::io::driver::Driver::park\".into(),\n720:        ]));\n721:    }\n722:}"}],"details":{"displayContent":{"text":"// Successful suspension owns precisely one suspend-count increment. Drop is the\n// fallback for all early returns/unwinds; explicit resume records OS failure.\nstruct ResumeGuard {\n    handle: HANDLE,\n    armed: bool,\n}\nimpl ResumeGuard {\n    fn resume(&mut self) -> Option<u32> {\n        if unsafe { ResumeThread(self.handle) } == u32::MAX {\n            Some(unsafe { GetLastError() })\n        } else {\n            self.armed = false;\n            None\n        }\n    }\n}\nimpl Drop for ResumeGuard {\n    fn drop(&mut self) {\n        if self.armed {\n            unsafe {\n                ResumeThread(self.handle);\n            }\n        }\n    }\n}\n…\n    fn copy_stack(&mut self, process: HANDLE) {\n…\n        if previous == u32::MAX {\n            self.copy_error = Some((\"SuspendThread\", unsafe { GetLastError() }));\n            return;\n        }\n        let mut resume = ResumeGuard {\n            handle: self.handle.0,\n            armed: true,\n        };\n        self.previous_suspend_count = Some(previous);\n        // From here to resume: fixed-size values, bounded memory copy, kernel\n        // APIs and QPC only. No allocation, formatting, logging, or mutexes.\n        self.copy_error = unsafe { self.copy_suspended(process) }.err();\n        self.resume_error = resume.resume();\n        drop(resume);\n        self.suspended_us = micros(began);\n    }\n\n    unsafe fn copy_suspended(&mut self, process: HANDLE) -> Result<(), (&'static str, u32)> {\n        unsafe {\n…\n        }\n    }\n\n    fn symbolize(&mut self, process: HANDLE) -> Value {\n        let mut errors = Vec::new();\n        if let Some((call, code)) = self.copy_error {\n            errors.push(format!(\"{call}: Win32 {code}\"));\n        }\n        if let Some(code) = self.resume_error {\n            errors.push(format!(\"ResumeThread: Win32 {code}; guard retried\"));\n        }\n        if self.previous_suspend_count.is_some_and(|count| count != 0) {\n            errors.push(\"worker was already suspended; original count preserved\".into());\n        }\n        let mut frames = Vec::new();\n        let mut raw_pcs = Vec::new();\n        if self.len != 0 {\n…\n        }\n…\n    }\n…\n    unsafe {\n        if !read.is_null() {\n            *read = 0;\n        }\n        let view = READ_VIEW.get();\n        if destination.is_null() {\n            return 0;\n        }\n        if !view.is_null() {\n            let view = &*view;\n        if let Some(offset) = address.checked_sub(view.start) {\n            if offset <= view.len as u64 && size as u64 <= view.len as u64 - offset {\n                ptr::copy_nonoverlapping(\n                    view.bytes.add(offset as usize),\n                    destination.cast::<u8>(),\n                    size as usize,\n                );\n                if !read.is_null() {\n                    *read = size;\n                }\n                return 1;\n            }\n        }\n        }\n…\n    }\n…\nfn is_tokio_idle(frames: &[String]) -> bool {\n    // Require an uninterrupted known wait chain into actual Tokio park code.\n    // A user waker can run synchronously beneath reactor park and itself block;\n    // an arbitrary intervening frame therefore prevents the idle verdict.\n    let Some(first) = frames.first() else {\n        return false;\n    };\n    if ![\n        \"!NtWaitForSingleObject\",\n        \"!NtWaitForMultipleObjects\",\n        \"!NtWaitForAlertByThreadId\",\n        \"!NtRemoveIoCompletion\",\n    ]\n    .iter()\n    .any(|symbol| first.contains(symbol))\n    {\n        return false;\n    }\n    for frame in frames.iter().skip(1) {\n        if [\n            \"tokio::runtime::park::Inner::park\",\n            \"tokio::runtime::io::driver::Driver::park\",\n        ]\n        .iter()\n        .any(|symbol| frame.contains(symbol))\n        {\n            return true;\n        }\n        if ![\n            \"!WaitForSingleObject\",\n            \"!WaitForMultipleObjects\",\n            \"!WaitOnAddress\",\n            \"!RtlWaitOnAddress\",\n            \"!RtlSleepConditionVariable\",\n            \"!SleepConditionVariable\",\n            \"!GetQueuedCompletionStatus\",\n            \"std::sys::sync::condvar::windows::Condvar::wait\",\n            \"std::sys::sync::thread_parking::windows::Parker::park\",\n            \"std::sync::poison::condvar::Condvar::wait\",\n            \"mio::sys::windows::selector::Selector::select\",\n            \"mio::sys::windows::iocp::CompletionPort::get\",\n            \"mio::poll::Poll::poll\",\n        ]\n        .iter()\n        .any(|symbol| frame.contains(symbol))\n        {\n            return false;\n        }\n    }\n    false\n}\n\n#[cfg(test)]\nmod tests {\n    use super::is_tokio_idle;\n\n    #[test]\n    fn generic_wait_and_active_reactor_do_not_prove_idle() {\n        assert!(!is_tokio_idle(&[\"ntdll!NtWaitForSingleObject\".into()]));\n        assert!(!is_tokio_idle(&[\n            \"ntdll!NtWaitForSingleObject\".into(),\n            \"spt!tokio::runtime::io::driver::Driver::turn\".into(),\n        ]));\n        assert!(is_tokio_idle(&[\n            \"ntdll!NtRemoveIoCompletionEx\".into(),\n            \"spt!tokio::runtime::io::driver::Driver::park\".into(),\n        ]));\n        assert!(!is_tokio_idle(&[\n            \"spt!application_callback\".into(),\n            \"spt!tokio::runtime::io::driver::Driver::park\".into(),\n        ]));\n        assert!(!is_tokio_idle(&[\n            \"ntdll!NtWaitForSingleObject\".into(),\n            \"spt!application_blocking_waker\".into(),\n            \"spt!tokio::runtime::io::driver::Driver::park\".into(),\n        ]));\n    }\n}","startLine":229,"lineNumbers":[229,230,231,232,233,234,235,236,237,238,239,240,241,242,243,244,245,246,247,248,249,250,251,252,253,null,303,null,319,320,321,322,323,324,325,326,327,328,329,330,331,332,333,334,335,336,337,null,380,381,382,383,384,385,386,387,388,389,390,391,392,393,394,395,396,null,398,null,425,null,542,543,544,545,546,547,548,549,550,551,552,553,554,555,556,557,558,559,560,561,562,563,564,565,null,598,null,645,646,647,648,649,650,651,652,653,654,655,656,657,658,659,660,661,662,663,664,665,666,667,668,669,670,671,672,673,674,675,676,677,678,679,680,681,682,683,684,685,686,687,688,689,690,691,692,693,694,695,696,697,698,699,700,701,702,703,704,705,706,707,708,709,710,711,712,713,714,715,716,717,718,719,720,721,722]},"fileSize":25154,"meta":{"source":{"type":"path","value":"C:\\Users\\decid\\Documents\\projects\\spt-core\\.worktrees\\302-net-worker-stamps\\crates\\spt-net-diag\\src\\stacks\\windows.rs"}}},"isError":false,"timestamp":1789542609248}}
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{"type":"message","id":"2e9e912d","parentId":"4ddb677a","timestamp":"2026-09-16T07:10:31.158Z","message":{"role":"assistant","content":[{"type":"thinking","thinking":"**Checking symbol callback initialization**"},{"type":"toolCall","id":"call_gC9IUQFx4p0KjZElk2fXrfh4|fc_0ba31c31d1cf7dc5016aaa40e4427887d2ab72ab07d33a4af6","name":"hub","arguments":{"i":"Reporting initialization and native risks","op":"send","to":"Main","message":"Proceeding source-only; no infinite retries/termination. Existing guard makes one ResumeThread call then one Drop retry; I am making retry failure observable but that still-live double-failure path remains unresolved safety blocker (JSON/logging after return cannot be guaranteed lock-safe). Startup eager SymInitialize remains synchronous; expose perturbation.initialization_us, first_capture, symbolization_us, symbol_lock_wait_us; please measure/announce new() elapsed even on Err and never backdate START/heartbeat. Exact matched-PDB options now apply both init/capture; missing system/PDB files yield raw-only/error, not idle. Local exe search and ignored CodeView paths avoid build-machine/server searches; late module PDB work can still occur in capture. No <=100ms claim."},"intent":"Reporting initialization and native risks"}],"api":"openai-codex-responses","provider":"openai-codex","model":"gpt-6-astra","usage":{"input":2391,"output":231,"cacheRead":46848,"cacheWrite":0,"totalTokens":49470,"reasoningTokens":43,"cost":{"input":0.02391,"output":0.011550000000000001,"cacheRead":0.046848,"cacheWrite":0,"total":0.082308}},"stopReason":"toolUse","timestamp":1789542609278,"responseId":"resp_0ba31c31d1cf7dc5016aaa40d17fb087d282be94c8bedddf22","providerPayload":{"type":"openaiResponsesHistory","provider":"openai-codex","dt":true,"items":[{"id":"rs_0ba31c31d1cf7dc5016aaa40e02e5c87d2a87d166366b62bf4","type":"reasoning","content":[],"encrypted_content":"gAAAAABqqkDkeQuoJJnOzx6KPVrWSfDNB0vpJtkY_YNHUMq2v20f9DlMgEZRgO1vhf5JwPGffX7Bbfh8Kq1UjqP_kT1PFwm2jWZG0OSfyiW4PbPuuB3VE_7LJgophxvutDUC-zvtE0H0BbbsQAWHFtTa-cjWtG8lf8jW1wNemPOwEQir09cawXPw1G_Xs8Oo_ghvmtkFYtEDYdsenqvHrnZsXoTSTlEOCulTIRHPMLRDKcMIYu9iSHsaPhbh88asjLbnuRVgQtQEdyd0GcHVOOrlhAO0Fyoy9cfNa8RthobULe7-1oGUvlX2EUAetjTUI7g4t8nc2y8jdYc1DTPQQNF3BFjvanH7icgiVKFbZljsE00AjdynngUkH1As1_-ReECzU2wQmDAF28Oq6_ULrxZOdB7s5M3CE2BREhBJoZheDP0z_NXAJkI5irfS0B0sjDVE6xambRDZB1ZyynyWLuffQbXI0R9nDwgK8TMvzrbfC9jKi70ZeY579NgTQmhPN7dgV6jeYrSOjlUPDCyCV28PL8RyiMgRyljtlACtI8_BCRwOeFDWJg9H9caz3PGp_PiERTGnFcFe-aTFi5Zt5TOx9uSMLpWHRfUyAJgbUytmg9B9z05eSOnDhO5_j3AU18CPM7l4OQDpNlPDJkistqhCvlCBnonwKLX9afwxZwz8ksXqaXk8V5fIVD4kl9mhaIR-9HCQ27t36pmJaumtpAcUdAoIPVDoH7ebDilK1XvSJCDWhXPY8pJV8mE6q3ixflilxFkua2WwtdpFSBvYZqyBukFcfFZ4hg0Rk2GXOFmI6wklLEEX2kihAbmCrFmdXLXNV2VYMaOj0x5xDMcAj08PQPBek5elbRSkjiYfSgi7pnquKdssI3WsvJmPBw6QFJ8wyvnI4YMc9y3xd-TOU23wwU9krDYWrmuwbXdG_OfZ74-0NZeyn7EfxIxj0IjtPs-Gpk3uj6JBRaKKLNoze8rXT8jq6dIpj8xepo5Cyj0nOiIPHmy61QqIQiCzsbfD5rVD6_BxvBZY7eE2YkMFFU9Gy1rBbH7DY3foFuNvia1BMndXVzpnXf0Us1lFEG7YDgsbIDSBsNPD_hJq-MsJpiSAdlHpl5b1xaud4rnVUpXGoapn55fbGczpfEygbHiYjMvcIPYd8iDsCzUE94Zd0iAa0vUQ33gOiSktcPXAYy7p6SV9OC2SbBopzILyq3XQ2mQUSW3igAzo-TevAgCajuNa4kmgoAJvyUrqQtcPQZuZLjSPm1IqQ5iQcpYENF_TSddHaGYjYa9pOCBZoK20eOw3UW51HWvLed8y-HbhK-OiWW-MUVp7Uzp7lHgG0_ZEjyW5-zTEusbENo7QCMm-cwe05TfQ-QwhKeho2v3Dkb1a-YmaT1pt30G4kw54pA0zhpcS8NxMFWFLRXR3GrYtJcvZuskuaFTpG2TJ1bF21CEEgUWpuzWIKULWqmPDfMC_K72mcQzmdMQvhwhBmGkUm-yFZKKwXg_I63ca80niZ_QuTmQaLejjzkfEhyMcXTEKpEnc-tsJTRwb33PpySv5of00KmYGD-EIUA==","internal_chat_message_metadata_passthrough":{"turn_id":"5078af20-1ef1-4841-bf0d-99250cd40aa7"},"summary":[{"type":"summary_text","text":"**Checking symbol callback initialization**"}],"metadata":{"turn_id":"5078af20-1ef1-4841-bf0d-99250cd40aa7"}},{"id":"fc_0ba31c31d1cf7dc5016aaa40e4427887d2ab72ab07d33a4af6","type":"function_call","status":"completed","arguments":"{\"i\":\"Reporting initialization and native risks\",\"op\":\"send\",\"to\":\"Main\",\"message\":\"Proceeding source-only; no infinite retries/termination. 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No <=100ms claim.\"}","call_id":"call_gC9IUQFx4p0KjZElk2fXrfh4","internal_chat_message_metadata_passthrough":{"create_time":1789542609.706252,"turn_id":"5078af20-1ef1-4841-bf0d-99250cd40aa7"},"name":"hub","metadata":{"turn_id":"5078af20-1ef1-4841-bf0d-99250cd40aa7"}}]},"duration":21875.969000000507,"ttft":14929.686799999326,"completedAt":1789542631155,"contextSnapshot":{"promptTokens":49239,"nonMessageTokens":16908,"compactionEpoch":0}}}
{"type":"message","id":"1839e5ad","parentId":"2e9e912d","timestamp":"2026-09-16T07:10:31.162Z","message":{"role":"toolResult","toolCallId":"call_gC9IUQFx4p0KjZElk2fXrfh4|fc_0ba31c31d1cf7dc5016aaa40e4427887d2ab72ab07d33a4af6","toolName":"hub","content":[{"type":"text","text":"Delivered to 1 peer(s):\n- Main: injected"}],"details":{"op":"send","from":"StackSource302","to":"Main","receipts":[{"to":"Main","outcome":"injected"}]},"isError":false,"timestamp":1789542631159}}
{"type":"custom","customType":"tool_execution_start","data":{"toolCallId":"call_LXCYGZguJI8ySBPHZcCCmYgJ|ctc_0ba31c31d1cf7dc5016aaa40fc75e887d2a7b806173c0d2c22","toolName":"edit","startedAt":"2026-09-16T07:11:25.904Z"},"id":"39504c42","parentId":"1839e5ad","timestamp":"2026-09-16T07:11:25.904Z"}
{"type":"message","id":"1787da08","parentId":"39504c42","timestamp":"2026-09-16T07:11:25.905Z","message":{"role":"assistant","content":[{"type":"thinking","thinking":"**Building capture barrier**\n\n**Prebuilding worker errors**"},{"type":"toolCall","id":"call_LXCYGZguJI8ySBPHZcCCmYgJ|ctc_0ba31c31d1cf7dc5016aaa40fc75e887d2a7b806173c0d2c22","name":"edit","arguments":{"input":"*** Begin Patch\n[.worktrees/302-net-worker-stamps/crates/spt-net-diag/src/stacks/windows.rs#2B99]\nPUT 1.=4:\n+//! Stack bytes and register contexts are copied while suspended. DbgHelp, Rust\n+//! allocation, formatting, and locks are deferred until resume attempts complete.\n+//! A failed resume AND failed guard retry remains a native safety blocker: the\n+//! worker may still own Rust/allocator locks. This backend is not field-approved.\n+//! Image/unwind metadata is read live; module lifetime races remain unvalidated.\n+//! Missing PDBs and stack-copy limits produce errors, not invented frames.\nPUT >75:\n+    resume_retry_error: Option<u32>,\nPUT 196.=196:\n+// Options are process-global, not per symbol session. Apply the same restricted\nPUT 231.=231:\n+struct ResumeGuard<'a> {\nPUT >233:\n+    retry_error: &'a mut Option<u32>,\nPUT 235.=235:\n+impl ResumeGuard<'_> {\nPUT 245.=245:\n+impl Drop for ResumeGuard<'_> {\nPUT 248.=250:\n+            if unsafe { ResumeThread(self.handle) } == u32::MAX {\n+                *self.retry_error = Some(unsafe { GetLastError() });\n+            }\nPUT >299:\n+            resume_retry_error: None,\nPUT >310:\n+        self.resume_retry_error = None;\nPUT <323:\n+        let mut retry_error = None;\nPUT >325:\n+            retry_error: &mut retry_error,\nPUT >332:\n+        self.resume_retry_error = retry_error;\nPUT >390:\n+        if let Some(code) = self.resume_retry_error {\n+            errors.push(format!(\n+                \"ResumeThread retry: Win32 {code}; worker may remain suspended; capture is unsafe\"\n+            ));\n+        }\nPUT 552.=564:\n+            if let Some(offset) = address.checked_sub(view.start) {\n+                if offset <= view.len as u64 && size as u64 <= view.len as u64 - offset {\n+                    ptr::copy_nonoverlapping(\n+                        view.bytes.add(offset as usize),\n+                        destination.cast::<u8>(),\n+                        size as usize,\n+                    );\n+                    if !read.is_null() {\n+                        *read = size;\n+                    }\n+                    return 1;\n+                }\n+            }\nPUT 645.=695:\n+fn frame_symbol(frame: &str) -> &str {\n+    let symbol = frame.split_once('!').map_or(frame, |(_, symbol)| symbol);\n+    symbol.split_once(\"+0x\").map_or(symbol, |(name, _)| name)\n+}\n+\n+fn is_tokio_idle(frames: &[String]) -> bool {\n+    // Require an uninterrupted known wait chain into actual Tokio park code.\n+    // Match complete names, not e.g. an application function containing a park\n+    // symbol or an active park_timeout helper. Unknown variants stay unknown.\n+    let Some(first) = frames.first() else {\n+        return false;\n+    };\n+    let Some((module, _)) = first.split_once('!') else {\n+        return false;\n+    };\n+    if !module.eq_ignore_ascii_case(\"ntdll\")\n+        || ![\n+            \"NtWaitForSingleObject\",\n+            \"NtWaitForMultipleObjects\",\n+            \"NtWaitForAlertByThreadId\",\n+            \"NtRemoveIoCompletion\",\n+            \"NtRemoveIoCompletionEx\",\n+        ]\n+        .contains(&frame_symbol(first))\n+    {\n+        return false;\n+    }\n+    for frame in frames.iter().skip(1) {\n+        let symbol = frame_symbol(frame);\n+        if [\n+            \"tokio::runtime::park::Inner::park\",\n+            \"tokio::runtime::io::driver::Driver::park\",\n+        ]\n+        .contains(&symbol)\n+        {\n+            return true;\n+        }\n+        if ![\n+            \"WaitForSingleObject\",\n+            \"WaitForSingleObjectEx\",\n+            \"WaitForMultipleObjects\",\n+            \"WaitForMultipleObjectsEx\",\n+            \"WaitOnAddress\",\n+            \"RtlWaitOnAddress\",\n+            \"RtlSleepConditionVariableCS\",\n+            \"RtlSleepConditionVariableSRW\",\n+            \"SleepConditionVariableCS\",\n+            \"SleepConditionVariableSRW\",\n+            \"GetQueuedCompletionStatus\",\n+            \"GetQueuedCompletionStatusEx\",\n+            \"std::sys::sync::condvar::windows::Condvar::wait\",\n+            \"std::sys::sync::thread_parking::windows::Parker::park\",\n+            \"std::sync::poison::condvar::Condvar::wait\",\n+            \"mio::sys::windows::selector::Selector::select\",\n+            \"mio::sys::windows::iocp::CompletionPort::get\",\n+            \"mio::poll::Poll::poll\",\n+        ]\n+        .contains(&symbol)\n+        {\n+            return false;\n+        }\n+    }\n+    false\n+}\nPUT >720:\n+        assert!(!is_tokio_idle(&[\n+            \"ntdll!NtWaitForSingleObject\".into(),\n+            \"spt!application::tokio::runtime::io::driver::Driver::park\".into(),\n+        ]));\n+        assert!(!is_tokio_idle(&[\n+            \"spt!NtWaitForSingleObject\".into(),\n+            \"spt!tokio::runtime::io::driver::Driver::park\".into(),\n+        ]));\n*** End Patch\n"},"customWireName":"edit"}],"api":"openai-codex-responses","provider":"openai-codex","model":"gpt-6-astra","usage":{"input":340,"output":1373,"cacheRead":49152,"cacheWrite":0,"totalTokens":50865,"reasoningTokens":165,"cost":{"input":0.0034000000000000002,"output":0.06865,"cacheRead":0.049152,"cacheWrite":0,"total":0.121202}},"stopReason":"toolUse","timestamp":1789542631185,"responseId":"resp_0ba31c31d1cf7dc5016aaa40e80f1487d283b2e85bec3d0d94","providerPayload":{"type":"openaiResponsesHistory","provider":"openai-codex","dt":true,"items":[{"id":"rs_0ba31c31d1cf7dc5016aaa40f4a57487d28642be269234867b","type":"reasoning","content":[],"encrypted_content":"gAAAAABqqkD8NMEe1JVq2VhiHNgr1kK2KTb-iRlc4ZmBYBlhVP4yTcklcC3Mn0fympnF2A1N4zdShETZ9IJDXpHVytEnx81whw3guFN6cPMAoH4Kw3JiEwSWtlvvH8NWzBmheNaPZOwmT02aEC8ic8BXbXP92lLtCFS3gB0Qg5rjUiZmgstw3jeYUcK9mQON2kJN06Zpx64U446_bvBepvbChOzsLwMGiQ2KVAEn9VcrmQe9oDtGLWa5NRM14apFrYJNiu4nUxm-KHSbiB-qzMj-JsWdHZVgs7LCt4q6-KoH5fibB0_lZgixCAS_ee_lcKecwhMhOfDxTBPqoCUkurs-1uNKeIq965oOKio_yZIXgJfjG0qKciMBRwXqZ_iaRchz7OktLPuWSdqoKbpR3tZE-vCu464y8xnHoRHXteqgUn4DfHqaQrPUpNZnggkjfbI9iKEvD0DnPLecTJnwEDmdccleXD1Ja7E-omxAIQi6RVO5hreL0mB-FvkgMS2VDA2EgpbsuR6lbtTPRmHALkIzLPydtnLTGO-3YAF3bLjz9uL7GdGCMGViMaTthm5bXwvrmrpWMq5nwE0YYZ2GlOduiRl2tSftDfxk5BVxBvOvNa2GLOlkOQMQ162gMnw_nXqqiRe4loNTXRc6YOtk1zXlrd8oztZA9S9vGT3GjYRNJ-XlkaeVJPV28dw5WUtICOjC14vy9-DvRQFEugs_JDXq8hA-y59VH-RBe_Fgeu7KE_z7gkcb-1w9LimvtP8r3Oj45lnWWQrvUend-lEXSO_HxBkKJ1hAYCAVt03wpwqq6O0vnotb415JuqDBVf6Wv5Xd7l58f0O-bnxq_eMEqbIw01_cQ3ytBkTNyN9kqeDn3HVcecDxSOS0O-BiuJayLbI_1Q2d976ch1bg6CseghtD3maAGSHj-ddcy_XvraEPomvXgN-EOSjaKCsUJpI3oYff8RHorYMa1Tw1UteEMTgDXXengumSyy1wEl3Gw6HRF43HLAvpUFvC6c9Otnn_VtrCBEUNYWTySssv8m4rsqflSz3wysTBkNuegf5xPpxarrLzI3D2h5kQZePPvudcwWma_BNafQKiXoi5ytfeaHqU--l1L0zfMhCLufpPC6ggEhUrJWXRBjgJO_82Ec0t3q9C9VvWXSFrrLDCVVBu0O4A1L2sFdC44H-FNxxHaXvZ_7JzJcLLZz--JCXcdtinr2o5spFLByF8XkMp14sQ2ukwbtLbxAImWYtcT7_odJJRWThgWU0cpOkPPKmP0VTi6qKt1P2ejc3oKBn_N5t9waNVfLPcaPRsfc9E0tT2RTG3ji5O38CECJBlboIBzRTfeAvwMD4veP-iV8ExQVWjDJpJUny4FNMgyPjzh-FhJO1gvqqonEP_mcWB87SO3e2QkoTv9G93f1sPhXoK70KXLCJZpmzlXuFrtKhjJCoPWF9XCNHWbznUBqth8TuPpWISp7r2faVHX3UhwY9PWBYnfv0-8aVSJ5FOL36jgKVGc_Wc_y8GIJ23MPHc5YqqZJhLioZnrI8_kdzqB1dn8ve0zaao3bogVSzBAcE5cVtMw98YAyEWSZkF7nhbKkaroiQQT6EY71vIRFwqVPlsGVqwwCBAVkAEHgeuPvM-dU_7G2D0udFjwPUyYPnzu0OVZ7NvxbJHbGSl8e8HH9hjdJXRgzL6GH6Qadd33WWQV7-7PG8wGsdAOWK5wfN28Yhv9f2a0kjzVQR-s4_BSW6y6E8Bx233DMJh4wBxHRS5jbqOwYCsf5HvviCYS_rzI7XNUjMb6a8ZagDA6r4BlcAdie7Nw0ZnVNq2CnA2t8q3KZGl-xI6foq5zp-Dv9DlN9CKvBalYqagZKqJjK9QyATjl3DFtqbNq4KIqfiecUB6VhJAC_TrWJGCef21xvk4BA-uN6cIimKMJpEdSboWfTHyi1Xf4kGte7h08uE5aaOgPh2WmN32yZM-8Id-_rLRsgm0LegwVD88f3hDpFvpe8FLiB6oR-c76FE-pNiK2MFEOpl2aPZeQiaQF7mAR18kXDQYJey2gVwyXw3oXZgHVMRFxzpsbqZt6JOMNWFofi9kvAxo4agD-TVWKU27yraGSqZk1_F2MdVoy2Jhha4tMD1lPr64r-4DBnW4nZaOxK0O_TUhgkJ0Bibhz1lI3kGKN2QRs4WdL1GhoGM8XCBYwVy2tNlT1z9venrFsdOq_hpexVGHPVuXOmmeDCe6j3tpJd0FWVOH1Gvcq1X6-6LhsXUfJqIIGlVZt7IxeIU3wghmTX2hNXes39eAW9M61m42YumkYw5IMtzeV2riMhlwMGWDOrU8BnqleyEWa_gsmrwlO_CIRmY61X4OIInE8VncisoozV3_kPCPb2tjhNRhyPA_Jl5zShpR8LL25HcuMHjht1K9_FKymEv0RCKxoLKjW_WV_6D-7BtEUXy40hbxwYRPpOpKYyBsoVzBOmEHPnT0IV0Jyip6bKfUQsvWE12vEgv8Y4sZ3YliCRU2bGxypka7IR0o6hVhw_zeOEe9bA==","internal_chat_message_metadata_passthrough":{"turn_id":"5078af20-1ef1-4841-bf0d-99250cd40aa7"},"summary":[{"type":"summary_text","text":"**Building capture barrier**"},{"type":"summary_text","text":"**Prebuilding worker errors**"}],"metadata":{"turn_id":"5078af20-1ef1-4841-bf0d-99250cd40aa7"}},{"id":"ctc_0ba31c31d1cf7dc5016aaa40fc75e887d2a7b806173c0d2c22","type":"custom_tool_call","status":"completed","call_id":"call_LXCYGZguJI8ySBPHZcCCmYgJ","input":"*** Begin Patch\n[.worktrees/302-net-worker-stamps/crates/spt-net-diag/src/stacks/windows.rs#2B99]\nPUT 1.=4:\n+//! Stack bytes and register contexts are copied while suspended. DbgHelp, Rust\n+//! allocation, formatting, and locks are deferred until resume attempts complete.\n+//! A failed resume AND failed guard retry remains a native safety blocker: the\n+//! worker may still own Rust/allocator locks. This backend is not field-approved.\n+//! Image/unwind metadata is read live; module lifetime races remain unvalidated.\n+//! Missing PDBs and stack-copy limits produce errors, not invented frames.\nPUT >75:\n+    resume_retry_error: Option<u32>,\nPUT 196.=196:\n+// Options are process-global, not per symbol session. Apply the same restricted\nPUT 231.=231:\n+struct ResumeGuard<'a> {\nPUT >233:\n+    retry_error: &'a mut Option<u32>,\nPUT 235.=235:\n+impl ResumeGuard<'_> {\nPUT 245.=245:\n+impl Drop for ResumeGuard<'_> {\nPUT 248.=250:\n+            if unsafe { ResumeThread(self.handle) } == u32::MAX {\n+                *self.retry_error = Some(unsafe { GetLastError() });\n+            }\nPUT >299:\n+            resume_retry_error: None,\nPUT >310:\n+        self.resume_retry_error = None;\nPUT <323:\n+        let mut retry_error = None;\nPUT >325:\n+            retry_error: &mut retry_error,\nPUT >332:\n+        self.resume_retry_error = retry_error;\nPUT >390:\n+        if let Some(code) = self.resume_retry_error {\n+            errors.push(format!(\n+                \"ResumeThread retry: Win32 {code}; worker may remain suspended; capture is unsafe\"\n+            ));\n+        }\nPUT 552.=564:\n+            if let Some(offset) = address.checked_sub(view.start) {\n+                if offset <= view.len as u64 && size as u64 <= view.len as u64 - offset {\n+                    ptr::copy_nonoverlapping(\n+                        view.bytes.add(offset as usize),\n+                        destination.cast::<u8>(),\n+                        size as usize,\n+                    );\n+                    if !read.is_null() {\n+                        *read = size;\n+                    }\n+                    return 1;\n+                }\n+            }\nPUT 645.=695:\n+fn frame_symbol(frame: &str) -> &str {\n+    let symbol = frame.split_once('!').map_or(frame, |(_, symbol)| symbol);\n+    symbol.split_once(\"+0x\").map_or(symbol, |(name, _)| name)\n+}\n+\n+fn is_tokio_idle(frames: &[String]) -> bool {\n+    // Require an uninterrupted known wait chain into actual Tokio park code.\n+    // Match complete names, not e.g. an application function containing a park\n+    // symbol or an active park_timeout helper. Unknown variants stay unknown.\n+    let Some(first) = frames.first() else {\n+        return false;\n+    };\n+    let Some((module, _)) = first.split_once('!') else {\n+        return false;\n+    };\n+    if !module.eq_ignore_ascii_case(\"ntdll\")\n+        || ![\n+            \"NtWaitForSingleObject\",\n+            \"NtWaitForMultipleObjects\",\n+            \"NtWaitForAlertByThreadId\",\n+            \"NtRemoveIoCompletion\",\n+            \"NtRemoveIoCompletionEx\",\n+        ]\n+        .contains(&frame_symbol(first))\n+    {\n+        return false;\n+    }\n+    for frame in frames.iter().skip(1) {\n+        let symbol = frame_symbol(frame);\n+        if [\n+            \"tokio::runtime::park::Inner::park\",\n+            \"tokio::runtime::io::driver::Driver::park\",\n+        ]\n+        .contains(&symbol)\n+        {\n+            return true;\n+        }\n+        if ![\n+            \"WaitForSingleObject\",\n+            \"WaitForSingleObjectEx\",\n+            \"WaitForMultipleObjects\",\n+            \"WaitForMultipleObjectsEx\",\n+            \"WaitOnAddress\",\n+            \"RtlWaitOnAddress\",\n+            \"RtlSleepConditionVariableCS\",\n+            \"RtlSleepConditionVariableSRW\",\n+            \"SleepConditionVariableCS\",\n+            \"SleepConditionVariableSRW\",\n+            \"GetQueuedCompletionStatus\",\n+            \"GetQueuedCompletionStatusEx\",\n+            \"std::sys::sync::condvar::windows::Condvar::wait\",\n+            \"std::sys::sync::thread_parking::windows::Parker::park\",\n+            \"std::sync::poison::condvar::Condvar::wait\",\n+            \"mio::sys::windows::selector::Selector::select\",\n+            \"mio::sys::windows::iocp::CompletionPort::get\",\n+            \"mio::poll::Poll::poll\",\n+        ]\n+        .contains(&symbol)\n+        {\n+            return false;\n+        }\n+    }\n+    false\n+}\nPUT >720:\n+        assert!(!is_tokio_idle(&[\n+            \"ntdll!NtWaitForSingleObject\".into(),\n+            \"spt!application::tokio::runtime::io::driver::Driver::park\".into(),\n+        ]));\n+        assert!(!is_tokio_idle(&[\n+            \"spt!NtWaitForSingleObject\".into(),\n+            \"spt!tokio::runtime::io::driver::Driver::park\".into(),\n+        ]));\n*** End Patch\n","internal_chat_message_metadata_passthrough":{"create_time":1789542632.249707,"turn_id":"5078af20-1ef1-4841-bf0d-99250cd40aa7"},"name":"edit","metadata":{"turn_id":"5078af20-1ef1-4841-bf0d-99250cd40aa7"}}]},"duration":54716.688300002366,"ttft":13484.665300000459,"completedAt":1789542685902,"contextSnapshot":{"promptTokens":49492,"nonMessageTokens":16908,"compactionEpoch":0}}}
{"type":"message","id":"bbe91527","parentId":"1787da08","timestamp":"2026-09-16T07:11:25.962Z","message":{"role":"toolResult","toolCallId":"call_LXCYGZguJI8ySBPHZcCCmYgJ|ctc_0ba31c31d1cf7dc5016aaa40fc75e887d2a7b806173c0d2c22","toolName":"edit","content":[{"type":"text","text":"[.worktrees/302-net-worker-stamps/crates/spt-net-diag/src/stacks/windows.rs#AC37]\n1://! Stack bytes and register contexts are copied while suspended. DbgHelp, Rust\n2://! allocation, formatting, and locks are deferred until resume attempts complete.\n3://! A failed resume AND failed guard retry remains a native safety blocker: the\n4://! worker may still own Rust/allocator locks. This backend is not field-approved.\n5://! Image/unwind metadata is read live; module lifetime races remain unvalidated.\n6://! Missing PDBs and stack-copy limits produce errors, not invented frames.\n7:\n8:use serde_json::{json, Value};\n\n66:struct Worker {\n\n76:    copy_error: Option<(&'static str, u32)>,\n77:    resume_error: Option<u32>,\n78:    resume_retry_error: Option<u32>,\n79:}\n80:\n\n190:impl Drop for StackSampler {\n\n197:}\n198:\n199:// Options are process-global, not per symbol session. Apply the same restricted\n200:// search and matching policy during capture as initialization, then restore.\n201:// Callers hold DBGHELP throughout this guard's lifetime.\n232:// Successful suspension owns precisely one suspend-count increment. Drop is the\n233:// fallback for all early returns/unwinds; explicit resume records OS failure.\n234:struct ResumeGuard<'a> {\n235:    handle: HANDLE,\n236:    armed: bool,\n237:    retry_error: &'a mut Option<u32>,\n238:}\n239:impl ResumeGuard<'_> {\n240:    fn resume(&mut self) -> Option<u32> {\n241:        if unsafe { ResumeThread(self.handle) } == u32::MAX {\n\n243:        } else {\n\n246:        }\n247:    }\n248:}\n249:impl Drop for ResumeGuard<'_> {\n250:    fn drop(&mut self) {\n251:        if self.armed {\n252:            if unsafe { ResumeThread(self.handle) } == u32::MAX {\n253:                *self.retry_error = Some(unsafe { GetLastError() });\n254:            }\n255:        }\n256:    }\n257:}\n\n260:    fn new(tid: u32) -> io::Result<Self> {\n\n292:        Ok(Self {\n\n302:            copy_error: None,\n303:            resume_error: None,\n304:            resume_retry_error: None,\n305:        })\n306:    }\n\n308:    fn copy_stack(&mut self, process: HANDLE) {\n\n314:        self.copy_error = None;\n315:        self.resume_error = None;\n316:        self.resume_retry_error = None;\n317:        self.context.0 = unsafe { zeroed() };\n318:        self.context.0.ContextFlags = CONTEXT_FULL_AMD64;\n\n325:        if previous == u32::MAX {\n\n327:            return;\n328:        }\n329:        let mut retry_error = None;\n330:        let mut resume = ResumeGuard {\n331:            handle: self.handle.0,\n332:            armed: true,\n333:            retry_error: &mut retry_error,\n334:        };\n335:        self.previous_suspend_count = Some(previous);\n339:        self.resume_error = resume.resume();\n340:        drop(resume);\n341:        self.resume_retry_error = retry_error;\n342:        self.suspended_us = micros(began);\n343:    }\n\n397:        if let Some(code) = self.resume_error {\n398:            errors.push(format!(\"ResumeThread: Win32 {code}; guard retried\"));\n399:        }\n400:        if let Some(code) = self.resume_retry_error {\n401:            errors.push(format!(\n402:                \"ResumeThread retry: Win32 {code}; worker may remain suspended; capture is unsafe\"\n403:            ));\n404:        }\n405:        if self.previous_suspend_count.is_some_and(|count| count != 0) {\n406:            errors.push(\"worker was already suspended; original count preserved\".into());\n407:        }\n\n564:        if !view.is_null() {\n565:            let view = &*view;\n566:            if let Some(offset) = address.checked_sub(view.start) {\n567:                if offset <= view.len as u64 && size as u64 <= view.len as u64 - offset {\n…\n575:                    }\n576:                    return 1;\n577:                }\n578:            }\n579:        }\n580:        // Never fall back to the now-running worker's stack/heap. Only image\n581:        // mappings may supply live code and unwind metadata outside our copy.\n\n615:fn symbolize_pc(process: HANDLE, pc: u64, errors: &mut Vec<String>) -> String {\n\n657:}\n658:\n659:fn frame_symbol(frame: &str) -> &str {\n660:    let symbol = frame.split_once('!').map_or(frame, |(_, symbol)| symbol);\n661:    symbol.split_once(\"+0x\").map_or(symbol, |(name, _)| name)\n662:}\n663:\n664:fn is_tokio_idle(frames: &[String]) -> bool {\n665:    // Require an uninterrupted known wait chain into actual Tokio park code.\n666:    // Match complete names, not e.g. an application function containing a park\n667:    // symbol or an active park_timeout helper. Unknown variants stay unknown.\n668:    let Some(first) = frames.first() else {\n669:        return false;\n670:    };\n671:    let Some((module, _)) = first.split_once('!') else {\n672:        return false;\n…\n681:        ]\n682:        .contains(&frame_symbol(first))\n683:    {\n684:        return false;\n685:    }\n686:    for frame in frames.iter().skip(1) {\n687:        let symbol = frame_symbol(frame);\n688:        if [\n689:            \"tokio::runtime::park::Inner::park\",\n690:            \"tokio::runtime::io::driver::Driver::park\",\n691:        ]\n692:        .contains(&symbol)\n693:        {\n694:            return true;\n695:        }\n696:        if ![\n697:            \"WaitForSingleObject\",\n698:            \"WaitForSingleObjectEx\",\n…\n707:            \"GetQueuedCompletionStatus\",\n708:            \"GetQueuedCompletionStatusEx\",\n709:            \"std::sys::sync::condvar::windows::Condvar::wait\",\n710:            \"std::sys::sync::thread_parking::windows::Parker::park\",\n714:            \"mio::poll::Poll::poll\",\n715:        ]\n716:        .contains(&symbol)\n717:        {\n718:            return false;\n719:        }\n720:    }\n\n722:}\n\n725:mod tests {\n\n729:    fn generic_wait_and_active_reactor_do_not_prove_idle() {\n\n743:        assert!(!is_tokio_idle(&[\n\n746:            \"spt!tokio::runtime::io::driver::Driver::park\".into(),\n747:        ]));\n748:        assert!(!is_tokio_idle(&[\n749:            \"ntdll!NtWaitForSingleObject\".into(),\n…\n754:            \"spt!tokio::runtime::io::driver::Driver::park\".into(),\n755:        ]));\n756:    }\n757:}"}],"details":{"diff":" 1|//! Stack bytes and register contexts are copied while suspended. DbgHelp, Rust\n-2|//! allocation, formatting, and locks run only after BOTH workers are resumed.\n-3|//! Image/unwind metadata is read live: unloaded modules, dynamically generated\n-4|//! code, missing PDBs, and stack-copy limits produce errors, not invented frames.\n+2|//! allocation, formatting, and locks are deferred until resume attempts complete.\n+3|//! A failed resume AND failed guard retry remains a native safety blocker: the\n+4|//! worker may still own Rust/allocator locks. This backend is not field-approved.\n+5|//! Image/unwind metadata is read live; module lifetime races remain unvalidated.\n+6|//! Missing PDBs and stack-copy limits produce errors, not invented frames.\n 5|\n 6|use serde_json::{json, Value};\n\n 64|struct Worker {\n\n 74|    copy_error: Option<(&'static str, u32)>,\n 75|    resume_error: Option<u32>,\n+78|    resume_retry_error: Option<u32>,\n 76|}\n 77|\n\n 187|impl Drop for StackSampler {\n\n 194|}\n 195|\n-196|// Options are process-global, not per symbol session. Apply the same bounded\n+199|// Options are process-global, not per symbol session. Apply the same restricted\n 197|// search and matching policy during capture as initialization, then restore.\n 198|// Callers hold DBGHELP throughout this guard's lifetime.\n 229|// Successful suspension owns precisely one suspend-count increment. Drop is the\n 230|// fallback for all early returns/unwinds; explicit resume records OS failure.\n-231|struct ResumeGuard {\n+234|struct ResumeGuard<'a> {\n 232|    handle: HANDLE,\n 233|    armed: bool,\n+237|    retry_error: &'a mut Option<u32>,\n 234|}\n-235|impl ResumeGuard {\n+239|impl ResumeGuard<'_> {\n 236|    fn resume(&mut self) -> Option<u32> {\n 237|        if unsafe { ResumeThread(self.handle) } == u32::MAX {\n\n 239|        } else {\n\n 242|        }\n 243|    }\n 244|}\n-245|impl Drop for ResumeGuard {\n+249|impl Drop for ResumeGuard<'_> {\n 246|    fn drop(&mut self) {\n 247|        if self.armed {\n-248|            unsafe {\n-249|                ResumeThread(self.handle);\n+252|            if unsafe { ResumeThread(self.handle) } == u32::MAX {\n+253|                *self.retry_error = Some(unsafe { GetLastError() });\n 250|            }\n 251|        }\n 252|    }\n 253|}\n\n 256|    fn new(tid: u32) -> io::Result<Self> {\n\n 288|        Ok(Self {\n\n 298|            copy_error: None,\n 299|            resume_error: None,\n+304|            resume_retry_error: None,\n 300|        })\n 301|    }\n\n 303|    fn copy_stack(&mut self, process: HANDLE) {\n\n 309|        self.copy_error = None;\n 310|        self.resume_error = None;\n+316|        self.resume_retry_error = None;\n 311|        self.context.0 = unsafe { zeroed() };\n 312|        self.context.0.ContextFlags = CONTEXT_FULL_AMD64;\n\n 319|        if previous == u32::MAX {\n\n 321|            return;\n 322|        }\n+329|        let mut retry_error = None;\n 323|        let mut resume = ResumeGuard {\n 324|            handle: self.handle.0,\n 325|            armed: true,\n+333|            retry_error: &mut retry_error,\n 326|        };\n 327|        self.previous_suspend_count = Some(previous);\n 331|        self.resume_error = resume.resume();\n 332|        drop(resume);\n+341|        self.resume_retry_error = retry_error;\n 333|        self.suspended_us = micros(began);\n 334|    }\n\n 388|        if let Some(code) = self.resume_error {\n 389|            errors.push(format!(\"ResumeThread: Win32 {code}; guard retried\"));\n 390|        }\n+400|        if let Some(code) = self.resume_retry_error {\n+401|            errors.push(format!(\n+402|                \"ResumeThread retry: Win32 {code}; worker may remain suspended; capture is unsafe\"\n+403|            ));\n+404|        }\n 391|        if self.previous_suspend_count.is_some_and(|count| count != 0) {\n 392|            errors.push(\"worker was already suspended; original count preserved\".into());\n 393|        }\n\n 550|        if !view.is_null() {\n 551|            let view = &*view;\n-552|        if let Some(offset) = address.checked_sub(view.start) {\n-553|            if offset <= view.len as u64 && size as u64 <= view.len as u64 - offset {\n-554|                ptr::copy_nonoverlapping(\n-555|                    view.bytes.add(offset as usize),\n-556|                    destination.cast::<u8>(),\n-557|                    size as usize,\n-558|                );\n-559|                if !read.is_null() {\n-560|                    *read = size;\n+566|            if let Some(offset) = address.checked_sub(view.start) {\n+567|                if offset <= view.len as u64 && size as u64 <= view.len as u64 - offset {\n+568|                    ptr::copy_nonoverlapping(\n+569|                        view.bytes.add(offset as usize),\n+570|                        destination.cast::<u8>(),\n+571|                        size as usize,\n+572|                    );\n+573|                    if !read.is_null() {\n+574|                        *read = size;\n+575|                    }\n+576|                    return 1;\n 561|                }\n-562|                return 1;\n 563|            }\n 564|        }\n-565|        }\n 566|        // Never fall back to the now-running worker's stack/heap. Only image\n 567|        // mappings may supply live code and unwind metadata outside our copy.\n\n 601|fn symbolize_pc(process: HANDLE, pc: u64, errors: &mut Vec<String>) -> String {\n\n 643|}\n 644|\n+659|fn frame_symbol(frame: &str) -> &str {\n+660|    let symbol = frame.split_once('!').map_or(frame, |(_, symbol)| symbol);\n+661|    symbol.split_once(\"+0x\").map_or(symbol, |(name, _)| name)\n+662|}\n+663|\n 645|fn is_tokio_idle(frames: &[String]) -> bool {\n 646|    // Require an uninterrupted known wait chain into actual Tokio park code.\n-647|    // A user waker can run synchronously beneath reactor park and itself block;\n-648|    // an arbitrary intervening frame therefore prevents the idle verdict.\n+666|    // Match complete names, not e.g. an application function containing a park\n+667|    // symbol or an active park_timeout helper. Unknown variants stay unknown.\n 649|    let Some(first) = frames.first() else {\n 650|        return false;\n 651|    };\n-652|    if ![\n-653|        \"!NtWaitForSingleObject\",\n-654|        \"!NtWaitForMultipleObjects\",\n-655|        \"!NtWaitForAlertByThreadId\",\n-656|        \"!NtRemoveIoCompletion\",\n-657|    ]\n-658|    .iter()\n-659|    .any(|symbol| first.contains(symbol))\n+671|    let Some((module, _)) = first.split_once('!') else {\n+672|        return false;\n+673|    };\n+674|    if !module.eq_ignore_ascii_case(\"ntdll\")\n+675|        || ![\n+676|            \"NtWaitForSingleObject\",\n+677|            \"NtWaitForMultipleObjects\",\n+678|            \"NtWaitForAlertByThreadId\",\n+679|            \"NtRemoveIoCompletion\",\n+680|            \"NtRemoveIoCompletionEx\",\n+681|        ]\n+682|        .contains(&frame_symbol(first))\n 660|    {\n 661|        return false;\n 662|    }\n 663|    for frame in frames.iter().skip(1) {\n+687|        let symbol = frame_symbol(frame);\n 664|        if [\n 665|            \"tokio::runtime::park::Inner::park\",\n 666|            \"tokio::runtime::io::driver::Driver::park\",\n 667|        ]\n-668|        .iter()\n-669|        .any(|symbol| frame.contains(symbol))\n+692|        .contains(&symbol)\n 670|        {\n 671|            return true;\n 672|        }\n 673|        if ![\n-674|            \"!WaitForSingleObject\",\n-675|            \"!WaitForMultipleObjects\",\n-676|            \"!WaitOnAddress\",\n-677|            \"!RtlWaitOnAddress\",\n-678|            \"!RtlSleepConditionVariable\",\n-679|            \"!SleepConditionVariable\",\n-680|            \"!GetQueuedCompletionStatus\",\n+697|            \"WaitForSingleObject\",\n+698|            \"WaitForSingleObjectEx\",\n+699|            \"WaitForMultipleObjects\",\n+700|            \"WaitForMultipleObjectsEx\",\n+701|            \"WaitOnAddress\",\n+702|            \"RtlWaitOnAddress\",\n+703|            \"RtlSleepConditionVariableCS\",\n+704|            \"RtlSleepConditionVariableSRW\",\n+705|            \"SleepConditionVariableCS\",\n+706|            \"SleepConditionVariableSRW\",\n+707|            \"GetQueuedCompletionStatus\",\n+708|            \"GetQueuedCompletionStatusEx\",\n 681|            \"std::sys::sync::condvar::windows::Condvar::wait\",\n 682|            \"std::sys::sync::thread_parking::windows::Parker::park\",\n 686|            \"mio::poll::Poll::poll\",\n 687|        ]\n-688|        .iter()\n-689|        .any(|symbol| frame.contains(symbol))\n+716|        .contains(&symbol)\n 690|        {\n 691|            return false;\n 692|        }\n 693|    }\n\n 695|}\n\n 698|mod tests {\n\n 702|    fn generic_wait_and_active_reactor_do_not_prove_idle() {\n\n 716|        assert!(!is_tokio_idle(&[\n\n 719|            \"spt!tokio::runtime::io::driver::Driver::park\".into(),\n 720|        ]));\n+748|        assert!(!is_tokio_idle(&[\n+749|            \"ntdll!NtWaitForSingleObject\".into(),\n+750|            \"spt!application::tokio::runtime::io::driver::Driver::park\".into(),\n+751|        ]));\n+752|        assert!(!is_tokio_idle(&[\n+753|            \"spt!NtWaitForSingleObject\".into(),\n+754|            \"spt!tokio::runtime::io::driver::Driver::park\".into(),\n+755|        ]));\n 721|    }\n 722|}","firstChangedLine":1,"op":"update","path":"C:\\Users\\decid\\Documents\\projects\\spt-core\\.worktrees\\302-net-worker-stamps\\crates\\spt-net-diag\\src\\stacks\\windows.rs","snapshotsPruned":true},"isError":false,"timestamp":1789542685961}}
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It is called by the symbol handler.\n\nThe **PSYMBOL\\_REGISTERED\\_CALLBACK64** type defines a pointer to this callback function. **SymRegisterCallbackProc64** is a placeholder for the application-defined function name.\n\n## Syntax\n\n```cpp\nPSYMBOL_REGISTERED_CALLBACK64 PsymbolRegisteredCallback64;\n\nBOOL PsymbolRegisteredCallback64(\n  [in]           HANDLE hProcess,\n  [in]           ULONG ActionCode,\n  [in, optional] ULONG64 CallbackData,\n  [in, optional] ULONG64 UserContext\n)\n{...}\n```\n\n## Parameters\n\n`[in] hProcess`\n\nA handle to the process that was originally passed to the [SymInitialize](/en-us/windows/desktop/api/dbghelp/nf-dbghelp-syminitialize) function.\n\n`[in] ActionCode`\n\nThe callback code. This parameter can be one of the following values.\n\n| Value | Meaning |\n| --- | --- |\n| - **CBA\\_DEBUG\\_INFO**<br>- 0x10000000 | Display verbose information. <br>The *CallbackData* parameter is a pointer to a string. |\n| - **CBA\\_DEFERRED\\_SYMBOL\\_LOAD\\_CANCEL**<br>- 0x00000007 | Deferred symbol loading has started. To cancel the symbol load, return **TRUE**. <br>The *CallbackData* parameter is a pointer to a [IMAGEHLP_DEFERRED_SYMBOL_LOAD64](/en-us/windows/desktop/api/dbghelp/ns-dbghelp-imagehlp_deferred_symbol_load) structure. |\n| - **CBA\\_DEFERRED\\_SYMBOL\\_LOAD\\_COMPLETE**<br>- 0x00000002 | Deferred symbol load has completed. <br>The *CallbackData* parameter is a pointer to a [IMAGEHLP_DEFERRED_SYMBOL_LOAD64](/en-us/windows/desktop/api/dbghelp/ns-dbghelp-imagehlp_deferred_symbol_load) structure. |\n| - **CBA\\_DEFERRED\\_SYMBOL\\_LOAD\\_FAILURE**<br>- 0x00000003 | Deferred symbol load has failed. <br>The *CallbackData* parameter is a pointer to a [IMAGEHLP_DEFERRED_SYMBOL_LOAD64](/en-us/windows/desktop/api/dbghelp/ns-dbghelp-imagehlp_deferred_symbol_load) structure. The symbol handler will attempt to load the symbols again if the callback function sets the **FileName** member of this structure. |\n| - **CBA\\_DEFERRED\\_SYMBOL\\_LOAD\\_PARTIAL**<br>- 0x00000020 | Deferred symbol load has partially completed. The symbol loader is unable to read the image header from either the image file or the specified module. <br>The *CallbackData* parameter is a pointer to a [IMAGEHLP_DEFERRED_SYMBOL_LOAD64](/en-us/windows/desktop/api/dbghelp/ns-dbghelp-imagehlp_deferred_symbol_load) structure. The symbol handler will attempt to load the symbols again if the callback function sets the **FileName** member of this structure.<br><br>**DbgHelp 5.1: **This value is not supported. |\n| - **CBA\\_DEFERRED\\_SYMBOL\\_LOAD\\_START**<br>- 0x00000001 | Deferred symbol load has started. <br>The *CallbackData* parameter is a pointer to a [IMAGEHLP_DEFERRED_SYMBOL_LOAD64](/en-us/windows/desktop/api/dbghelp/ns-dbghelp-imagehlp_deferred_symbol_load) structure. |\n| - **CBA\\_DUPLICATE\\_SYMBOL**<br>- 0x00000005 | Duplicate symbols were found. This reason is used only in COFF or CodeView format. <br>The *CallbackData* parameter is a pointer to a [IMAGEHLP_DUPLICATE_SYMBOL64](/en-us/windows/desktop/api/dbghelp/ns-dbghelp-imagehlp_duplicate_symbol) structure. To specify which symbol to use, set the **SelectedSymbol** member of this structure. |\n| - **CBA\\_EVENT**<br>- 0x00000010 | Display verbose information. If you do not handle this event, the information is resent through the CBA\\_DEBUG\\_INFO event. <br>The *CallbackData* parameter is a pointer to a [IMAGEHLP_CBA_EVENT](/en-us/windows/desktop/api/dbghelp/ns-dbghelp-imagehlp_cba_event) structure. |\n| - **CBA\\_READ\\_MEMORY**<br>- 0x00000006 | The loaded image has been read. <br>The *CallbackData* parameter is a pointer to a [IMAGEHLP_CBA_READ_MEMORY](/en-us/windows/desktop/api/dbghelp/ns-dbghelp-imagehlp_cba_read_memory) structure. The callback function should read the number of bytes specified by the **bytes** member into the buffer specified by the **buf** member, and update the **bytesread** member accordingly. |\n| - **CBA\\_SET\\_OPTIONS**<br>- 0x00000008 | Symbol options have been updated. To retrieve the current options, call the [SymGetOptions](/en-us/windows/desktop/api/dbghelp/nf-dbghelp-symgetoptions) function. <br>The *CallbackData* parameter should be ignored. |\n| - **CBA\\_SRCSRV\\_EVENT**<br>- 0x40000000 | Display verbose information for source server. If you do not handle this event, the information is resent through the CBA\\_DEBUG\\_INFO event. <br>The *CallbackData* parameter is a pointer to a [IMAGEHLP_CBA_EVENT](/en-us/windows/desktop/api/dbghelp/ns-dbghelp-imagehlp_cba_event) structure.<br><br>**DbgHelp 6.6 and earlier: **This value is not supported. |\n| - **CBA\\_SRCSRV\\_INFO**<br>- 0x20000000 | Display verbose information for source server. <br>The *CallbackData* parameter is a pointer to a string.<br><br>**DbgHelp 6.6 and earlier: **This value is not supported. |\n| - **CBA\\_SYMBOLS\\_UNLOADED**<br>- 0x00000004 | Symbols have been unloaded. <br>The *CallbackData* parameter should be ignored. |\n\n`[in, optional] CallbackData`\n\nData for the operation. The format of this data depends on the value of the *ActionCode* parameter.\n\nIf the callback function was registered with [SymRegisterCallbackW64](/en-us/windows/desktop/api/dbghelp/nf-dbghelp-symregistercallback), the data is a Unicode string or data structure. Otherwise, the data uses ANSI format.\n\n`[in, optional] UserContext`\n\nUser-defined value specified in [SymRegisterCallback64](/en-us/windows/desktop/api/dbghelp/nf-dbghelp-symregistercallback), or **NULL**. Typically, this parameter is used by an application to pass a pointer to a data structure that lets the callback function establish some context.\n\n## Return value\n\nTo indicate success handling the code, return **TRUE**.\n\nTo indicate failure handling the code, return **FALSE**. If your code does not handle a particular code, you should also return **FALSE**. (Returning **TRUE** in this case may have unintended consequences.)\n\n## Remarks\n\nThe calling application gets called through the registered callback function as a result of another call to one of the symbol handler functions. The calling application must be prepared for the possible side effects that this can cause. If the application has only one callback function that is being used by multiple threads, then care may be necessary to synchronize some types of data access while in the context of the callback function.\n\nThis callback function supersedes the *PSYMBOL\\_REGISTERED\\_CALLBACK* callback function. *PSYMBOL\\_REGISTERED\\_CALLBACK* is defined as follows in Dbghelp.h.\n\n```cpp\n#if !defined(_IMAGEHLP_SOURCE_) && defined(_IMAGEHLP64)\n#define PSYMBOL_REGISTERED_CALLBACK PSYMBOL_REGISTERED_CALLBACK64\n#else\ntypedef BOOL\n(CALLBACK *PSYMBOL_REGISTERED_CALLBACK)(\n    __in HANDLE hProcess,\n    __in ULONG ActionCode,\n    __in_opt PVOID CallbackData,\n    __in_opt PVOID UserContext\n    );\n#endif\n```\n\nFor a more extensive example, read [Getting Notifications](/en-us/windows/desktop/Debug/getting-notifications).\n\n## Requirements\n\n| Requirement | Value |\n| --- | --- |\n| **Target Platform** | Windows |\n| **Header** | dbghelp.h |\n| **Redistributable** | DbgHelp.dll 5.1 or later |"}],"details":{"kind":"url","url":"https://learn.microsoft.com/en-us/windows/win32/api/dbghelp/nc-dbghelp-psymbol_registered_callback64","finalUrl":"https://learn.microsoft.com/en-us/windows/win32/api/dbghelp/nc-dbghelp-psymbol_registered_callback64","contentType":"text/markdown","method":"content-negotiation","truncated":false,"notes":["Content negotiation returned text/markdown"],"meta":{"source":{"type":"url","value":"https://learn.microsoft.com/en-us/windows/win32/api/dbghelp/nc-dbghelp-psymbol_registered_callback64"}}},"isError":false,"timestamp":1789542708303}}
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{"type":"message","id":"b3f15641","parentId":"1d9f2851","timestamp":"2026-09-16T07:12:08.692Z","message":{"role":"toolResult","toolCallId":"call_iFNW9owIyzyQGrb7mLFMR8mL|fc_0ba31c31d1cf7dc5016aaa4148763087d2b4e24d6fbeaae9ed","toolName":"read","content":[{"type":"text","text":"[.worktrees/302-net-worker-stamps/crates/spt-net-diag/src/stacks/windows.rs#AC37]\n164:        let suspend_duration_us: u64 = self.workers.iter().map(|w| w.suspended_us).sum();\n165:        let first_capture = self.first_capture;\n166:        self.first_capture = false;\n167:        let mut result = json!({\n168:            \"workers\": workers,\n169:            \"capture_duration_ms\": started.elapsed().as_millis() as u64,\n170:            \"perturbation\": {\n171:                \"backend\": \"windows-x64-copied-stack\",\n172:                \"suspend_duration_us\": suspend_duration_us,\n173:                \"suspend_duration_is_upper_bound\": true,\n174:                \"stack_copy_phase_us\": copy_duration_us,\n175:                \"symbol_lock_wait_us\": symbol_lock_wait_us,\n176:                \"symbolization_us\": symbolization_us,\n177:                \"initialization_us\": self.initialization_us,\n178:                \"first_capture\": first_capture,\n179:                \"captures_are_sequential\": true,\n180:                \"stack_buffer_bytes_per_worker\": STACK_BYTES,\n181:                \"frame_limit\": MAX_FRAMES\n182:            }\n183:        });\n184:        // Include construction of the evidence value in the measured capture.\n185:        result[\"capture_duration_ms\"] = json!(started.elapsed().as_millis() as u64);\n186:        result\n…\n392:    fn symbolize(&mut self, process: HANDLE) -> Value {\n…\n413:        let activity = if errors.is_empty() && is_tokio_idle(&frames) {\n414:            \"idle\"\n415:        } else {\n416:            \"unknown\"\n417:        };\n418:        json!({\n419:            \"tid\": self.tid,\n420:            \"activity\": activity,\n421:            \"op_id\": null,\n422:            \"frames\": frames,\n423:            \"raw_pcs\": raw_pcs,\n424:            \"raw_registers\": if self.context_valid {\n425:                Some(json!({\n426:                    \"rip\": format!(\"0x{:016x}\", self.context.0.Rip),\n427:                    \"rsp\": format!(\"0x{:016x}\", self.context.0.Rsp),\n428:                    \"rbp\": format!(\"0x{:016x}\", self.context.0.Rbp)\n429:                }))\n430:            } else {\n431:                None\n432:            },\n433:            \"progress_counter\": null,\n434:            \"error\": if errors.is_empty() { None } else { Some(errors.join(\"; \")) },\n435:            \"suspend_duration_us\": self.suspended_us,\n436:            \"previous_suspend_count\": self.previous_suspend_count,\n437:            \"copied_stack_bytes\": self.len\n438:        })\n439:    }\n440:"}],"details":{"displayContent":{"text":"        let suspend_duration_us: u64 = self.workers.iter().map(|w| w.suspended_us).sum();\n        let first_capture = self.first_capture;\n        self.first_capture = false;\n        let mut result = json!({\n            \"workers\": workers,\n            \"capture_duration_ms\": started.elapsed().as_millis() as u64,\n            \"perturbation\": {\n                \"backend\": \"windows-x64-copied-stack\",\n                \"suspend_duration_us\": suspend_duration_us,\n                \"suspend_duration_is_upper_bound\": true,\n                \"stack_copy_phase_us\": copy_duration_us,\n                \"symbol_lock_wait_us\": symbol_lock_wait_us,\n                \"symbolization_us\": symbolization_us,\n                \"initialization_us\": self.initialization_us,\n                \"first_capture\": first_capture,\n                \"captures_are_sequential\": true,\n                \"stack_buffer_bytes_per_worker\": STACK_BYTES,\n                \"frame_limit\": MAX_FRAMES\n            }\n        });\n        // Include construction of the evidence value in the measured capture.\n        result[\"capture_duration_ms\"] = json!(started.elapsed().as_millis() as u64);\n        result\n…\n    fn symbolize(&mut self, process: HANDLE) -> Value {\n…\n        let activity = if errors.is_empty() && is_tokio_idle(&frames) {\n            \"idle\"\n        } else {\n            \"unknown\"\n        };\n        json!({\n            \"tid\": self.tid,\n            \"activity\": activity,\n            \"op_id\": null,\n            \"frames\": frames,\n            \"raw_pcs\": raw_pcs,\n            \"raw_registers\": if self.context_valid {\n                Some(json!({\n                    \"rip\": format!(\"0x{:016x}\", self.context.0.Rip),\n                    \"rsp\": format!(\"0x{:016x}\", self.context.0.Rsp),\n                    \"rbp\": format!(\"0x{:016x}\", self.context.0.Rbp)\n                }))\n            } else {\n                None\n            },\n            \"progress_counter\": null,\n            \"error\": if errors.is_empty() { None } else { Some(errors.join(\"; \")) },\n            \"suspend_duration_us\": self.suspended_us,\n            \"previous_suspend_count\": self.previous_suspend_count,\n            \"copied_stack_bytes\": self.len\n        })\n    }\n","startLine":164,"lineNumbers":[164,165,166,167,168,169,170,171,172,173,174,175,176,177,178,179,180,181,182,183,184,185,186,null,392,null,413,414,415,416,417,418,419,420,421,422,423,424,425,426,427,428,429,430,431,432,433,434,435,436,437,438,439,440]},"fileSize":26816,"meta":{"source":{"type":"path","value":"C:\\Users\\decid\\Documents\\projects\\spt-core\\.worktrees\\302-net-worker-stamps\\crates\\spt-net-diag\\src\\stacks\\windows.rs"}}},"isError":false,"timestamp":1789542728691}}
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{"type":"message","id":"eda2f0b3","parentId":"01fd60bd","timestamp":"2026-09-16T07:12:23.726Z","message":{"role":"assistant","content":[{"type":"thinking","thinking":"**Updating duration rounding**"},{"type":"toolCall","id":"call_RPKmZeJ54gNBLFgipTZbydzg|ctc_0ba31c31d1cf7dc5016aaa4155a20087d2a43a875478b4c9b7","name":"edit","arguments":{"input":"*** Begin Patch\n[.worktrees/302-net-worker-stamps/crates/spt-net-diag/src/stacks/windows.rs#AC37]\nPUT 173.=173:\n+                \"suspend_duration_is_upper_bound\": self.workers.iter().all(|w| {\n+                    w.resume_retry_error.is_none()\n+                        && w.previous_suspend_count.is_none_or(|count| count == 0)\n+                }),\nPUT 185.=185:\n+        result[\"capture_duration_ms\"] = json!(micros(started).div_ceil(1000));\nPUT >435:\n+            \"resume_confirmed\": self.previous_suspend_count.map(|_| self.resume_retry_error.is_none()),\n*** End Patch\n"},"customWireName":"edit"}],"api":"openai-codex-responses","provider":"openai-codex","model":"gpt-6-astra","usage":{"input":1074,"output":301,"cacheRead":55680,"cacheWrite":0,"totalTokens":57055,"reasoningTokens":145,"cost":{"input":0.010740000000000001,"output":0.015050000000000001,"cacheRead":0.05568,"cacheWrite":0,"total":0.08147}},"stopReason":"toolUse","timestamp":1789542728748,"responseId":"resp_0ba31c31d1cf7dc5016aaa4148f45487d2af88511a344965ab","providerPayload":{"type":"openaiResponsesHistory","provider":"openai-codex","dt":true,"items":[{"id":"rs_0ba31c31d1cf7dc5016aaa414ea11087d2bda86c301d49b3a8","type":"reasoning","content":[],"encrypted_content":"gAAAAABqqkFVRjyMB70dqij3SqJ2EqCQe0srQcofdjEq2LPRWZRS3LxWdyXI8FtfbXDiL0NBY4rN_RFjBpa8_cOe0xrW4gyEszB6ZjppqGpyaK-uNXNfmDeOzDKLpRwxtbIlP_wGVAopCwtlYKvXHNb-9BZnwuyM3j3j83NbOJKOckCnOkUqv2HaOTbJhPTzKpSp4MJIEhNdD8RUtetooLx2mhDkr-fWZGDVA37Hz9VWMooC1XssgLCSto2wC8e8Y2HRVq5IL_rHOWKO-zGmHzmZN5S5rKV2ZT4xQhi12mw8XBPuBoMpKwXJDx2izOwuNVA_-5D3hgaLkjJz1LEQT76xhDf43pkJkGZDv6Y0hKEDg6IdQNVdWevYBGmyeEJuPR6_f_G25L7WkAzc-1KGAZMy-Vsww7LrhQup0WgbGwbYtdbvbX7jJAFC1vlbSM2z7w5EZkHgfUMKIj_sAjRDcOx_-Icv2AsvillTVJlcdSzE6EI-UJrNNf_RRoTD85-96MXxjJoUEcMhJz0Vg2v_qpl4w1Eblr3Au6xD6-74Xum4-vEd0x0J7wN7lz1HlcrlD0ZRrxeU-5zmQRfOW4mUirTJdk1TCkoVrxOwJpuM8-wEpn8ZdeDl6qEi5aTFx6vAduCXPaY4K0xf3ckp9I-0QMTABF7_L8th7gR1bt8DLuIU_0Wao81ykNZgacJg0ly9nsnSHkP3AoG6P0WfvicnXNbivVlVP2gDU01DATeXURgBr3zzomoWResESw9ufV-V9Uxu8VWIi8ZafqYslJwLFoDAbQiXWpbofIToGoHYh7wBx_ZbtG8NczEPfwT7mALycC4yO9dXzbCPSMpDfD_NZX9Z6SOtud_HAYBV_Y8FgxMWBLhiuyeb7V8JYVHHGO96RXe9wJGMsUqJ5z1Iy2K2nSSupMxrwPCXP8ND3ISN6ebJvGS2LtqiOUkFojs75vj0f7nhdQd79QZV5xG4IEhwoCXO_oyy7NJBGxuBEcaIm2Sdr-OhbKLddT28epzClD8QVmnOQV_aBR9lvujvuE6RjFKdkk6wUMNswPdqEpQ9OhmnL6fBClsRvkC9bT0x3L2QM4NLjdZ0SOnv8_O0-kHZMZaF1gxsGrvXY6OHck1SxAcn7J0sk2YddqeU8gi2ZNfN3h6tQLpd5hHYIVWh6ZK6jeSqyefZAFoOJZQGg1nSTTF_8NzoUF7CaSaa4VUXhwJ3loDLrh_CZNeKfGpyorO43XLc9lTPhcAOxF9WAISb0OVeir7wihXV69qHZ8NY5MopKRhEIR6wspPB4ffJLSxrY9LlBiY8V2tj1amfsavpE_GHXYDAL7RHpK6B9-uY8UyHP6GBxOMXz-MsiXWZ1KcGzw75qFLUuiIaYC5pmALUwVo7D4Ev1aPbm1QUEa1r1Q2rI5tnStD0cRNM83AhfKW9_Qyf-JXqLWUZhIXFxUM6JX7mwWoeSSJj8DfLHuOGeFixUEVJIZR8LcNH_uEY_dhFdEUHFV1ltLRa1OUkfbGp755noW3PPKSFIsfLaQedwpj8Fc2gXCgONjcpZRWyBrGRqCgwf0uHN0c4VuZfkRRi6K6N6S2sBhPFKkQPB_O8AqzNEA_D_jPKqv-15dMaUaTswjwKFBbjMwvHROZ_nK0QTge78ZGI6bcXB87HHQ900B7oJ-jlOe347f8dW2iDFhbBvPoPPlNzNWVT53uEy_6iuzc9LjwDPUpXDYxYaOjesHcPX7ZxF7m1SqfkDhfKqai9KXvPrYK-57yAqyw7TPD98FW3crxO_SLXBT5xNE1Gn56TzwF1fE0hfX034xT9X83z-sx2CKtk5P_CZH6u_Y0EWus34ovGEaWkadVrG_hwmb-4yhlw_-0TrLFJQlnh8vrrTLtmaa75-R4zDlG_3RwHRp0De8M7htGwScYzFUAvcsbAN9gD93mLnKJ5HAhppeP_gLgpDvp83Ixe8y9NxUycPIk7nuVkvkz57oKEbrv2Zegiz5lRUqfvlQZHHTZ-VDDRSrSk2fbGWK9-r7ymJsXzAHzLrbsG8i8lbCZKUiUnaUWbYn33I08oPqW-iEOQjcFRHa4m9Rs4LMvUHtK4KWik0WIR4yT9HjUbt8FZIdK2Wip0z3S9iFKi40qtRY2zrXqqzMDrA1ruG5IWQMnBhThQy73lWlOCatFep9MyQqhYBlDa25x_pqXA8sxYAaIDEG5MN4XmpkBKAt_MwIneIP4trMwI-yMtVTDj1UiEiWfTFjuGFA5iG7uwHED0","internal_chat_message_metadata_passthrough":{"turn_id":"5078af20-1ef1-4841-bf0d-99250cd40aa7"},"summary":[{"type":"summary_text","text":"**Updating 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{"type":"message","id":"77906325","parentId":"f7d9b6ee","timestamp":"2026-09-16T07:12:23.793Z","message":{"role":"user","content":"Current interruptible wait interrupted: IRC message from parent agent `Main`.\n\nParent IRC message:\n\nDoyle ARF3GC7J: bounded ResumeThread retry, then one loud NET_DIAG_RESUME_FAILED line and permanent watchdog disarm; suspend window <=100ms; show code path + forced-failure unit check. Implement bounded kernel-only retry and fatal capture signal (row fatal_resume_failure true or equivalent stable private API) plus requested unit source test. Main consumes fatal flag to disarm watchdog. No runtime validation until siblings complete. I told Doyle explicitly disarm cannot guarantee resumption if all OS calls fail; field staging remains blocked. Emit emergency line using native WriteFile/preallocated bytes, NOT Rust stderr/alloc/locks while resume is unconfirmed. No infinite loop or process termination.","attribution":"agent","timestamp":1789542737144,"steering":true}}
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{"type":"message","id":"3b53143a","parentId":"5c105959","timestamp":"2026-09-16T07:13:12.022Z","message":{"role":"toolResult","toolCallId":"call_1WSz112WIjIqRtALaWcZzIF7|fc_0ba31c31d1cf7dc5016aaa4186e6f087d2a698950fc900958f","toolName":"read","content":[{"type":"text","text":"[.worktrees/302-net-worker-stamps/crates/spt-net-diag/src/stacks/windows.rs#B957]\n9:use std::{\n…\n18:};\n19:use windows_sys::Win32::{\n20:    Foundation::{\n21:        CloseHandle, DuplicateHandle, GetLastError, SetLastError, DUPLICATE_SAME_ACCESS, HANDLE,\n22:    },\n23:    System::{\n24:        Diagnostics::Debug::{\n25:            AddrModeFlat, GetThreadContext, ReadProcessMemory, StackWalk64, SymCleanup,\n26:            SymFromAddr, SymFunctionTableAccess64, SymGetModuleBase64, SymGetModuleInfo64,\n27:            SymGetOptions, SymInitializeW, SymRegisterCallback64, SymSetOptions, SymPdb,\n28:            CBA_READ_MEMORY, CONTEXT, CONTEXT_FULL_AMD64, IMAGEHLP_CBA_READ_MEMORY,\n29:            IMAGEHLP_MODULE64, STACKFRAME64, SYMBOL_INFO, SYMBOL_INFO_PACKAGE,\n30:            SYMOPT_DISABLE_SYMSRV_AUTODETECT, SYMOPT_EXACT_SYMBOLS, SYMOPT_FAIL_CRITICAL_ERRORS,\n31:            SYMOPT_IGNORE_CVREC, SYMOPT_IGNORE_NT_SYMPATH, SYMOPT_NO_PROMPTS, SYMOPT_UNDNAME,\n32:        },\n33:        Memory::{\n34:            VirtualQuery, MEMORY_BASIC_INFORMATION, MEM_COMMIT, MEM_IMAGE, PAGE_GUARD,\n35:            PAGE_NOACCESS,\n36:        },\n37:        Threading::{\n38:            GetCurrentProcess, GetCurrentProcessId, GetCurrentThreadId, GetProcessIdOfThread,\n39:            OpenThread, ResumeThread, SuspendThread, THREAD_GET_CONTEXT, THREAD_QUERY_INFORMATION,\n40:            THREAD_SUSPEND_RESUME,\n41:        },\n42:    },\n43:};\n44:\n…\n66:struct Worker {\n67:    tid: u32,\n68:    handle: Handle,\n69:    context: AlignedContext,\n70:    bytes: Vec<u8>,\n71:    start: u64,\n72:    context_valid: bool,\n73:    len: usize,\n74:    suspended_us: u64,\n75:    previous_suspend_count: Option<u32>,\n76:    copy_error: Option<(&'static str, u32)>,\n77:    resume_error: Option<u32>,\n78:    resume_retry_error: Option<u32>,\n79:}\n80:\n81:pub(crate) struct StackSampler {\n82:    workers: [Worker; 2],\n83:    process: Handle,\n84:    initialization_us: u64,\n85:    first_capture: bool,\n86:}\n87:\n88:impl StackSampler {\n89:    pub(crate) fn new(worker_tids: [u32; 2]) -> io::Result<Self> {\n…\n124:        let _lock = DBGHELP.lock().unwrap_or_else(|e| e.into_inner());\n125:        let _options = SymbolOptions::new();\n126:        unsafe {\n127:            if SymInitializeW(process.0, path.as_ptr(), 1) == 0 {\n128:                return Err(io::Error::last_os_error());\n129:            }\n130:            if SymRegisterCallback64(process.0, Some(symbol_callback), 0) == 0 {\n131:                let error = GetLastError();\n132:                SymCleanup(process.0);\n133:                return Err(io::Error::from_raw_os_error(error as i32));\n134:            }\n135:        }\n136:        Ok(Self {\n137:            workers,\n138:            process,\n139:            initialization_us: micros(started),\n140:            first_capture: true,\n141:        })\n142:    }\n143:\n144:    pub(crate) fn capture(&mut self) -> Value {\n145:        let started = Instant::now();\n146:        // No DbgHelp lock is held here: a suspended worker may itself own it.\n147:        for worker in &mut self.workers {\n148:            worker.copy_stack(self.process.0);\n149:        }\n150:        let copy_duration_us = micros(started);\n151:        let lock_started = Instant::now();\n152:        let lock = DBGHELP.lock().unwrap_or_else(|e| e.into_inner());\n153:        let symbol_lock_wait_us = micros(lock_started);\n154:        let options = SymbolOptions::new();\n155:        let symbol_started = Instant::now();\n156:        let workers: Vec<Value> = self\n157:            .workers\n158:            .iter_mut()\n159:            .map(|worker| worker.symbolize(self.process.0))\n160:            .collect();\n161:        let symbolization_us = micros(symbol_started);\n162:        drop(options);\n163:        drop(lock);\n164:        let suspend_duration_us: u64 = self.workers.iter().map(|w| w.suspended_us).sum();\n…\n190:    }\n191:}\n…\n231:fn micros(start: Instant) -> u64 {\n232:    start.elapsed().as_micros().min(u64::MAX as u128) as u64\n233:}\n234:\n235:// Successful suspension owns precisely one suspend-count increment. Drop is the\n236:// fallback for all early returns/unwinds; explicit resume records OS failure.\n237:struct ResumeGuard<'a> {\n238:    handle: HANDLE,\n239:    armed: bool,\n240:    retry_error: &'a mut Option<u32>,\n241:}\n242:impl ResumeGuard<'_> {\n243:    fn resume(&mut self) -> Option<u32> {\n244:        if unsafe { ResumeThread(self.handle) } == u32::MAX {\n245:            Some(unsafe { GetLastError() })\n246:        } else {\n247:            self.armed = false;\n248:            None\n249:        }\n250:    }\n251:}\n252:impl Drop for ResumeGuard<'_> {\n253:    fn drop(&mut self) {\n254:        if self.armed {\n255:            if unsafe { ResumeThread(self.handle) } == u32::MAX {\n256:                *self.retry_error = Some(unsafe { GetLastError() });\n257:            }\n258:        }\n259:    }\n260:}\n…\n263:    fn new(tid: u32) -> io::Result<Self> {\n…\n295:        Ok(Self {\n…\n308:        })\n309:    }\n310:\n311:    fn copy_stack(&mut self, process: HANDLE) {\n312:        self.len = 0;\n313:        self.start = 0;\n314:        self.context_valid = false;\n315:        self.suspended_us = 0;\n316:        self.previous_suspend_count = None;\n317:        self.copy_error = None;\n318:        self.resume_error = None;\n319:        self.resume_retry_error = None;\n320:        self.context.0 = unsafe { zeroed() };\n321:        self.context.0.ContextFlags = CONTEXT_FULL_AMD64;\n322:        if self.tid == unsafe { GetCurrentThreadId() } {\n323:            self.copy_error = Some((\"refusing self-suspend\", 0));\n324:            return;\n325:        }\n326:        let began = Instant::now();\n327:        let previous = unsafe { SuspendThread(self.handle.0) };\n328:        if previous == u32::MAX {\n329:            self.copy_error = Some((\"SuspendThread\", unsafe { GetLastError() }));\n330:            return;\n331:        }\n332:        let mut retry_error = None;\n333:        let mut resume = ResumeGuard {\n334:            handle: self.handle.0,\n335:            armed: true,\n336:            retry_error: &mut retry_error,\n337:        };\n338:        self.previous_suspend_count = Some(previous);\n339:        // From here to resume: fixed-size values, bounded memory copy, kernel\n340:        // APIs and QPC only. No allocation, formatting, logging, or mutexes.\n341:        self.copy_error = unsafe { self.copy_suspended(process) }.err();\n342:        self.resume_error = resume.resume();\n343:        drop(resume);\n344:        self.resume_retry_error = retry_error;\n345:        self.suspended_us = micros(began);\n346:    }\n347:\n348:    unsafe fn copy_suspended(&mut self, process: HANDLE) -> Result<(), (&'static str, u32)> {\n…\n393:    }\n…\n728:#[cfg(test)]\n729:mod tests {\n730:    use super::is_tokio_idle;\n731:\n732:    #[test]\n733:    fn generic_wait_and_active_reactor_do_not_prove_idle() {\n734:        assert!(!is_tokio_idle(&[\"ntdll!NtWaitForSingleObject\".into()]));\n735:        assert!(!is_tokio_idle(&[\n736:            \"ntdll!NtWaitForSingleObject\".into(),\n737:            \"spt!tokio::runtime::io::driver::Driver::turn\".into(),\n738:        ]));\n739:        assert!(is_tokio_idle(&[\n740:            \"ntdll!NtRemoveIoCompletionEx\".into(),\n741:            \"spt!tokio::runtime::io::driver::Driver::park\".into(),\n742:        ]));\n743:        assert!(!is_tokio_idle(&[\n744:            \"spt!application_callback\".into(),\n745:            \"spt!tokio::runtime::io::driver::Driver::park\".into(),\n746:        ]));\n747:        assert!(!is_tokio_idle(&[\n748:            \"ntdll!NtWaitForSingleObject\".into(),\n749:            \"spt!application_blocking_waker\".into(),\n750:            \"spt!tokio::runtime::io::driver::Driver::park\".into(),\n751:        ]));\n752:        assert!(!is_tokio_idle(&[\n753:            \"ntdll!NtWaitForSingleObject\".into(),\n754:            \"spt!application::tokio::runtime::io::driver::Driver::park\".into(),\n755:        ]));\n756:        assert!(!is_tokio_idle(&[\n757:            \"spt!NtWaitForSingleObject\".into(),\n758:            \"spt!tokio::runtime::io::driver::Driver::park\".into(),\n759:        ]));\n760:    }\n761:}"}],"details":{"displayContent":{"text":"use std::{\n…\n};\nuse windows_sys::Win32::{\n    Foundation::{\n        CloseHandle, DuplicateHandle, GetLastError, SetLastError, DUPLICATE_SAME_ACCESS, HANDLE,\n    },\n    System::{\n        Diagnostics::Debug::{\n            AddrModeFlat, GetThreadContext, ReadProcessMemory, StackWalk64, SymCleanup,\n            SymFromAddr, SymFunctionTableAccess64, SymGetModuleBase64, SymGetModuleInfo64,\n            SymGetOptions, SymInitializeW, SymRegisterCallback64, SymSetOptions, SymPdb,\n            CBA_READ_MEMORY, CONTEXT, CONTEXT_FULL_AMD64, IMAGEHLP_CBA_READ_MEMORY,\n            IMAGEHLP_MODULE64, STACKFRAME64, SYMBOL_INFO, SYMBOL_INFO_PACKAGE,\n            SYMOPT_DISABLE_SYMSRV_AUTODETECT, SYMOPT_EXACT_SYMBOLS, SYMOPT_FAIL_CRITICAL_ERRORS,\n            SYMOPT_IGNORE_CVREC, SYMOPT_IGNORE_NT_SYMPATH, SYMOPT_NO_PROMPTS, SYMOPT_UNDNAME,\n        },\n        Memory::{\n            VirtualQuery, MEMORY_BASIC_INFORMATION, MEM_COMMIT, MEM_IMAGE, PAGE_GUARD,\n            PAGE_NOACCESS,\n        },\n        Threading::{\n            GetCurrentProcess, GetCurrentProcessId, GetCurrentThreadId, GetProcessIdOfThread,\n            OpenThread, ResumeThread, SuspendThread, THREAD_GET_CONTEXT, THREAD_QUERY_INFORMATION,\n            THREAD_SUSPEND_RESUME,\n        },\n    },\n};\n\n…\nstruct Worker {\n    tid: u32,\n    handle: Handle,\n    context: AlignedContext,\n    bytes: Vec<u8>,\n    start: u64,\n    context_valid: bool,\n    len: usize,\n    suspended_us: u64,\n    previous_suspend_count: Option<u32>,\n    copy_error: Option<(&'static str, u32)>,\n    resume_error: Option<u32>,\n    resume_retry_error: Option<u32>,\n}\n\npub(crate) struct StackSampler {\n    workers: [Worker; 2],\n    process: Handle,\n    initialization_us: u64,\n    first_capture: bool,\n}\n\nimpl StackSampler {\n    pub(crate) fn new(worker_tids: [u32; 2]) -> io::Result<Self> {\n…\n        let _lock = DBGHELP.lock().unwrap_or_else(|e| e.into_inner());\n        let _options = SymbolOptions::new();\n        unsafe {\n            if SymInitializeW(process.0, path.as_ptr(), 1) == 0 {\n                return Err(io::Error::last_os_error());\n            }\n            if SymRegisterCallback64(process.0, Some(symbol_callback), 0) == 0 {\n                let error = GetLastError();\n                SymCleanup(process.0);\n                return Err(io::Error::from_raw_os_error(error as i32));\n            }\n        }\n        Ok(Self {\n            workers,\n            process,\n            initialization_us: micros(started),\n            first_capture: true,\n        })\n    }\n\n    pub(crate) fn capture(&mut self) -> Value {\n        let started = Instant::now();\n        // No DbgHelp lock is held here: a suspended worker may itself own it.\n        for worker in &mut self.workers {\n            worker.copy_stack(self.process.0);\n        }\n        let copy_duration_us = micros(started);\n        let lock_started = Instant::now();\n        let lock = DBGHELP.lock().unwrap_or_else(|e| e.into_inner());\n        let symbol_lock_wait_us = micros(lock_started);\n        let options = SymbolOptions::new();\n        let symbol_started = Instant::now();\n        let workers: Vec<Value> = self\n            .workers\n            .iter_mut()\n            .map(|worker| worker.symbolize(self.process.0))\n            .collect();\n        let symbolization_us = micros(symbol_started);\n        drop(options);\n        drop(lock);\n        let suspend_duration_us: u64 = self.workers.iter().map(|w| w.suspended_us).sum();\n…\n    }\n}\n…\nfn micros(start: Instant) -> u64 {\n    start.elapsed().as_micros().min(u64::MAX as u128) as u64\n}\n\n// Successful suspension owns precisely one suspend-count increment. Drop is the\n// fallback for all early returns/unwinds; explicit resume records OS failure.\nstruct ResumeGuard<'a> {\n    handle: HANDLE,\n    armed: bool,\n    retry_error: &'a mut Option<u32>,\n}\nimpl ResumeGuard<'_> {\n    fn resume(&mut self) -> Option<u32> {\n        if unsafe { ResumeThread(self.handle) } == u32::MAX {\n            Some(unsafe { GetLastError() })\n        } else {\n            self.armed = false;\n            None\n        }\n    }\n}\nimpl Drop for ResumeGuard<'_> {\n    fn drop(&mut self) {\n        if self.armed {\n            if unsafe { ResumeThread(self.handle) } == u32::MAX {\n                *self.retry_error = Some(unsafe { GetLastError() });\n            }\n        }\n    }\n}\n…\n    fn new(tid: u32) -> io::Result<Self> {\n…\n        Ok(Self {\n…\n        })\n    }\n\n    fn copy_stack(&mut self, process: HANDLE) {\n        self.len = 0;\n        self.start = 0;\n        self.context_valid = false;\n        self.suspended_us = 0;\n        self.previous_suspend_count = None;\n        self.copy_error = None;\n        self.resume_error = None;\n        self.resume_retry_error = None;\n        self.context.0 = unsafe { zeroed() };\n        self.context.0.ContextFlags = CONTEXT_FULL_AMD64;\n        if self.tid == unsafe { GetCurrentThreadId() } {\n            self.copy_error = Some((\"refusing self-suspend\", 0));\n            return;\n        }\n        let began = Instant::now();\n        let previous = unsafe { SuspendThread(self.handle.0) };\n        if previous == u32::MAX {\n            self.copy_error = Some((\"SuspendThread\", unsafe { GetLastError() }));\n            return;\n        }\n        let mut retry_error = None;\n        let mut resume = ResumeGuard {\n            handle: self.handle.0,\n            armed: true,\n            retry_error: &mut retry_error,\n        };\n        self.previous_suspend_count = Some(previous);\n        // From here to resume: fixed-size values, bounded memory copy, kernel\n        // APIs and QPC only. No allocation, formatting, logging, or mutexes.\n        self.copy_error = unsafe { self.copy_suspended(process) }.err();\n        self.resume_error = resume.resume();\n        drop(resume);\n        self.resume_retry_error = retry_error;\n        self.suspended_us = micros(began);\n    }\n\n    unsafe fn copy_suspended(&mut self, process: HANDLE) -> Result<(), (&'static str, u32)> {\n…\n    }\n…\n#[cfg(test)]\nmod tests {\n    use super::is_tokio_idle;\n\n    #[test]\n    fn generic_wait_and_active_reactor_do_not_prove_idle() {\n        assert!(!is_tokio_idle(&[\"ntdll!NtWaitForSingleObject\".into()]));\n        assert!(!is_tokio_idle(&[\n            \"ntdll!NtWaitForSingleObject\".into(),\n            \"spt!tokio::runtime::io::driver::Driver::turn\".into(),\n        ]));\n        assert!(is_tokio_idle(&[\n            \"ntdll!NtRemoveIoCompletionEx\".into(),\n            \"spt!tokio::runtime::io::driver::Driver::park\".into(),\n        ]));\n        assert!(!is_tokio_idle(&[\n            \"spt!application_callback\".into(),\n            \"spt!tokio::runtime::io::driver::Driver::park\".into(),\n        ]));\n        assert!(!is_tokio_idle(&[\n            \"ntdll!NtWaitForSingleObject\".into(),\n            \"spt!application_blocking_waker\".into(),\n            \"spt!tokio::runtime::io::driver::Driver::park\".into(),\n        ]));\n        assert!(!is_tokio_idle(&[\n            \"ntdll!NtWaitForSingleObject\".into(),\n            \"spt!application::tokio::runtime::io::driver::Driver::park\".into(),\n        ]));\n        assert!(!is_tokio_idle(&[\n            \"spt!NtWaitForSingleObject\".into(),\n            \"spt!tokio::runtime::io::driver::Driver::park\".into(),\n        ]));\n    }\n}","startLine":9,"lineNumbers":[9,null,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,null,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,null,124,125,126,127,128,129,130,131,132,133,134,135,136,137,138,139,140,141,142,143,144,145,146,147,148,149,150,151,152,153,154,155,156,157,158,159,160,161,162,163,164,null,190,191,null,231,232,233,234,235,236,237,238,239,240,241,242,243,244,245,246,247,248,249,250,251,252,253,254,255,256,257,258,259,260,null,263,null,295,null,308,309,310,311,312,313,314,315,316,317,318,319,320,321,322,323,324,325,326,327,328,329,330,331,332,333,334,335,336,337,338,339,340,341,342,343,344,345,346,347,348,null,393,null,728,729,730,731,732,733,734,735,736,737,738,739,740,741,742,743,744,745,746,747,748,749,750,751,752,753,754,755,756,757,758,759,760,761]},"fileSize":27092,"meta":{"source":{"type":"path","value":"C:\\Users\\decid\\Documents\\projects\\spt-core\\.worktrees\\302-net-worker-stamps\\crates\\spt-net-diag\\src\\stacks\\windows.rs"}}},"isError":false,"timestamp":1789542792021}}
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{"type":"custom","customType":"tool_execution_start","data":{"toolCallId":"call_6mexpD0sQQJJMSPKCQbcbH1g|ctc_0ba31c31d1cf7dc5016aaa41a7a34487d29f2aea82d5293fd8","toolName":"edit","startedAt":"2026-09-16T07:14:22.194Z"},"id":"051bccc6","parentId":"b41cc9be","timestamp":"2026-09-16T07:14:22.194Z"}
{"type":"message","id":"849db171","parentId":"051bccc6","timestamp":"2026-09-16T07:14:22.194Z","message":{"role":"assistant","content":[{"type":"thinking","thinking":"**Implementing the failure object**"},{"type":"toolCall","id":"call_6mexpD0sQQJJMSPKCQbcbH1g|ctc_0ba31c31d1cf7dc5016aaa41a7a34487d29f2aea82d5293fd8","name":"edit","arguments":{"input":"*** Begin Patch\n[.worktrees/302-net-worker-stamps/crates/spt-net-diag/src/stacks/windows.rs#B957]\nPUT 1.=6:\n+//! Stack bytes and register contexts are copied without Rust allocation/locks\n+//! while suspended. A resume failure gets one kernel-only retry. If it fails,\n+//! emit a static native emergency line and return preallocated fatal evidence;\n+//! the observer must disarm and retain (not drop) the sampler and evidence.\n+//! Resumption and <=100ms remain native proof obligations, not guarantees.\n+//! Image metadata is read live; module lifetime races remain unvalidated.\nPUT >43:\n+\n+// Keep the failure escape independent of Rust stderr/allocator locks. These\n+// kernel32 APIs require no additional windows-sys feature activation.\n+#[link(name = \"kernel32\")]\n+extern \"system\" {\n+    fn GetStdHandle(which: u32) -> HANDLE;\n+    fn WriteFile(\n+        file: HANDLE,\n+        bytes: *const u8,\n+        length: u32,\n+        written: *mut u32,\n+        overlapped: *mut c_void,\n+    ) -> i32;\n+}\n+\n+fn emit_resume_failure() {\n+    const LINE: &[u8] = b\"NET_DIAG_RESUME_FAILED: watchdog permanently disarmed; worker resume unconfirmed\\r\\n\";\n+    let mut written = 0;\n+    unsafe {\n+        // One write attempt only. Missing/blocked stderr remains an OS failure\n+        // case; retrying or formatting here would worsen the unsafe condition.\n+        WriteFile(\n+            GetStdHandle(-12i32 as u32),\n+            LINE.as_ptr(),\n+            LINE.len() as u32,\n+            &mut written,\n+            null_mut(),\n+        );\n+    }\n+}\nPUT >85:\n+    fatal_capture: Option<Value>,\n+    disarmed: bool,\nPUT <136:\n+        let fatal_capture = json!({\n+            \"fatal_resume_failure\": true,\n+            \"failed_tid\": 0,\n+            \"resume_error\": 0,\n+            \"resume_retry_error\": 0,\n+            \"capture_duration_ms\": 0,\n+            \"workers\": worker_tids.map(|tid| json!({\n+                \"tid\": tid,\n+                \"activity\": \"unknown\",\n+                \"op_id\": null,\n+                \"frames\": [],\n+                \"progress_counter\": null,\n+                \"error\": \"paired capture abandoned: worker resume unconfirmed\"\n+            }))\n+        });\nPUT >140:\n+            fatal_capture: Some(fatal_capture),\n+            disarmed: false,\nPUT >144:\n+        if self.disarmed {\n+            return Value::Null;\n+        }\nPUT >148:\n+            if let Some(retry_error) = worker.resume_retry_error {\n+                self.disarmed = true;\n+                // No symbolization, Rust locks, allocation OR deallocation\n+                // after an unconfirmed resume. All keys already exist.\n+                let mut fatal = self.fatal_capture.take().unwrap_or(Value::Null);\n+                if let Some(value) = fatal.get_mut(\"failed_tid\") {\n+                    *value = Value::from(worker.tid);\n+                }\n+                if let Some(value) = fatal.get_mut(\"resume_error\") {\n+                    *value = Value::from(worker.resume_error.unwrap_or(0));\n+                }\n+                if let Some(value) = fatal.get_mut(\"resume_retry_error\") {\n+                    *value = Value::from(retry_error);\n+                }\n+                emit_resume_failure();\n+                if let Some(value) = fatal.get_mut(\"capture_duration_ms\") {\n+                    *value = Value::from(micros(started).div_ceil(1000));\n+                }\n+                return fatal;\n+            }\nPUT 237.=260:\n+struct ResumeGuard {\n+    handle: HANDLE,\n+    armed: bool,\n+}\n+\n+// A narrow seam for forced native-failure source checks: production invokes\n+// only ResumeThread/GetLastError here, with no allocation or Rust locks.\n+fn resume_twice(mut attempt: impl FnMut() -> Result<(), u32>) -> (Option<u32>, Option<u32>) {\n+    match attempt() {\n+        Ok(()) => (None, None),\n+        Err(first) => (Some(first), attempt().err()),\n+    }\n+}\n+\n+impl ResumeGuard {\n+    fn resume(&mut self) -> (Option<u32>, Option<u32>) {\n+        let result = resume_twice(|| {\n+            if unsafe { ResumeThread(self.handle) } == u32::MAX {\n+                Err(unsafe { GetLastError() })\n+            } else {\n+                Ok(())\n+            }\n+        });\n+        // Two failures are handed to the fatal path, never an unbounded retry.\n+        self.armed = false;\n+        result\n+    }\n+}\n+impl Drop for ResumeGuard {\n+    fn drop(&mut self) {\n+        if self.armed && self.resume().1.is_some() {\n+            emit_resume_failure();\n+        }\n+    }\n+}\nCUT 332.=332\nCUT 336.=336\nPUT 342.=342:\n+        (self.resume_error, self.resume_retry_error) = resume.resume();\nCUT 344.=344\nPUT 730.=730:\n+    use super::{is_tokio_idle, resume_twice};\n+\n+    #[test]\n+    fn failed_resume_stops_after_one_retry_and_preserves_both_errors() {\n+        let mut attempts = 0;\n+        let errors = resume_twice(|| {\n+            attempts += 1;\n+            Err(100 + attempts)\n+        });\n+        assert_eq!(attempts, 2);\n+        assert_eq!(errors, (Some(101), Some(102)));\n+    }\n+\n+    #[test]\n+    fn successful_resume_retry_does_not_report_fatal_failure() {\n+        let mut attempts = 0;\n+        let errors = resume_twice(|| {\n+            attempts += 1;\n+            if attempts == 1 { Err(5) } else { Ok(()) }\n+        });\n+        assert_eq!(attempts, 2);\n+        assert_eq!(errors, (Some(5), None));\n+    }\n*** End Patch\n"},"customWireName":"edit"}],"api":"openai-codex-responses","provider":"openai-codex","model":"gpt-6-astra","usage":{"input":328,"output":1478,"cacheRead":60800,"cacheWrite":0,"totalTokens":62606,"reasoningTokens":121,"cost":{"input":0.0032800000000000004,"output":0.07390000000000001,"cacheRead":0.0608,"cacheWrite":0,"total":0.13798000000000002}},"stopReason":"toolUse","timestamp":1789542805165,"responseId":"resp_0ba31c31d1cf7dc5016aaa41955e7487d29b0c6867edea039b","providerPayload":{"type":"openaiResponsesHistory","provider":"openai-codex","dt":true,"items":[{"id":"rs_0ba31c31d1cf7dc5016aaa41a1cbe887d2b43f8bc85092e8af","type":"reasoning","content":[],"encrypted_content":"gAAAAABqqkGniAmydqg7702UwHUoNPDJFyHTVCqrlBGm_iXXBq4GV_oK0pYmijTxTfhsvZhfSaBl5LzWSSk8ih5AL_KyvT6QW4R6T01I0Bft3rjMi2u_ZVgFaAo60taPwYtn5PnxJ_FxtAwe6B5OP_YwMdPNida0FS6EC3ge5LWO3Qf5RczOVDNennoEYhsTcwoUrPrMV00ylglkbn7NBmyLUlCXs-oyK21RcUioQt7g4EPxyEvctoXE-eaGYi6CPcX-ri2DgmYzK_Z7fqYfjHpmewYKeAqjxfwDTaWB0GLxeXRxZzlLrWmmciVq-x4CsTv7TDD-bU_xJA6UiI-4VemmctdJ6Ij5WRCS-6bdW2mb0Ms55twK8jVEfxviSnO4_tQg0WUYliBld2UAXrWH4zIiSqxeRm0PRYk9KtTJQKpPqJ8OwZXI9q7RnT9arTPXCWLg55nzdwUZ7xVdiaBPvfEpFzOVmveSMc3-YX9pGA7kGA_m3e5v6Pycxrd0cxfamitDnEHHza18IMd2C8kX8EtE7VwRjQMlsaHFDU79b4P0OX_KZMBtPsZSMKhJt1JCYYsvQYMSsPl29avFuJhYtKGksjWNVCIjmr6oIJPgMubvGkD1dOns7uAaFfbZGHp7hY9YdGr3BzAliSfZ9QZMJqHxoStuAc2_3EiX_2PcEDN3ODhbd-e3hfuTCH3pyMIUA6nugpk__ahCDQs-NoruOuRaddBjhE9uZ0ashQGq7qRA85-VJx9jGAwvnfM7psuessNsM6nBu5VPKYOXw_8nQEy4YuG6sl0sV1auld5Q_XIeaTso7C_EaxcUsLtNg_W1TV_5OF0d3_Olv_yNgdV8YS8pSqQzZrLP-4G_jdsiLjMINIVGQr0dyzGSCEGtpO88GC38lxFO48E3Z-3KF7hVkfU9O0fq65geVrtdA3aEn71sv0_d2JW22PqZMizFyjNJUsAsDPpuUxHE2pd24fd728Y2Ss66QzysnE2q6AlglAYlQrXUkXS-q6UljF46n7V8u2PPUefn1pUfZE9VTRO61wjLpGnSdjghoS3QSNwyEpNu8geHq5roBOehpLe6G6S7eRXpo4X_hlSMgZOaVOZj9ESIByc8rZMlofj6txd5j_7H2qVYw7JuQFGciHM0xjiFidaoENc3mAbuhEFl-PXsGkyXsv_MTOSMMlPPVeISMWrjkg6TejHHSMuJFDFFw-ceXYOtRpCf6osWUNxUgxv8y90nkr-MscSZKx8MeZ7nYRBAnLqkt3o8Ktkom_A_G2AsyAe1NPuCn-Yt4_7dDL3Yl-uV1tVvei0v5huiz1Zo3v_5SQDmNXgZV_xrb7WpYxD_CCJFeHNrE--KV2CX0mFhHB7SjvO7h8BphQBgiXmtCi-aFKYOzENQDF8_0_WYTvF3ZKAJfey-vFe1Cr2ysEYU69g9-AWKAjbgqMPyLKASFKVUd_O_skVTPjJ7-M3A6-jZIH-JIP3aiUJYGw_L7BMi9NHalUlVqLnmu---CqlM8gkkyozMOVBqxaUnM3TUcAAvYNUgdyVcZwMj-tNmWnO1nJrfj28g4wftiagQX5JW_fOiZo9_jZao3LQz_LWFXPj3G43t1YREkASqVFarCN78tAmUKiLR1BrbYZsIrDVL2xlhdvg8tnktHEBPrf7M_0piac7wnMxLQ-lDKu3-ZkXWBiCT3QjVTM96avnFeTQvKstC2UVJf2bGIqdPeZ5bKkiQ0bJKSheUGYojMkSA9NKzvO3oZx-zrBpFjb9kNBEOTtVt5_rDRZX_sJgpH3gfXG_7hu9vcVIu2jkr71-9eLE4RWHOf8hi5cCbeDUVZN5bEpjMNDMLP2-sT1gy2FM6gUJWdFl8Ip05XgVo0mbO_TBOtzzK4fCdoBUEa-mclGUlho7O5G_i_59sblwR6L-0E-b1u04Am35Tiwcnih5ZzH5I_Yezd9n5lxzCCZaH1jNdcjUFepB4s3agmaHMwKMgrLsOEJs86aa087Cs-ESIpP5fmsM3GxW1XBxWiAMIOU9dtXs6D6ua0hvq_5rgsNIob-TGqmQNEuy0GiLANhsSRf8NA7qVkiGPUb_koUUa5gbFHJgdo8SnWSwnNIy_xS1skSp-zqvn3TstWbuie0XN2oKlWnrzLkoIDbtGCkuTP4ufn4ZEDau3mf8tQOO4IzHs5CltWAajjvp8LChONYgX8fLvIecsIwWJledJ9A==","internal_chat_message_metadata_passthrough":{"turn_id":"0a172348-2436-48ce-b956-755f953c2862"},"summary":[{"type":"summary_text","text":"**Implementing the failure object**"}],"metadata":{"turn_id":"0a172348-2436-48ce-b956-755f953c2862"}},{"id":"ctc_0ba31c31d1cf7dc5016aaa41a7a34487d29f2aea82d5293fd8","type":"custom_tool_call","status":"completed","call_id":"call_6mexpD0sQQJJMSPKCQbcbH1g","input":"*** Begin Patch\n[.worktrees/302-net-worker-stamps/crates/spt-net-diag/src/stacks/windows.rs#B957]\nPUT 1.=6:\n+//! Stack bytes and register contexts are copied without Rust allocation/locks\n+//! while suspended. A resume failure gets one kernel-only retry. If it fails,\n+//! emit a static native emergency line and return preallocated fatal evidence;\n+//! the observer must disarm and retain (not drop) the sampler and evidence.\n+//! Resumption and <=100ms remain native proof obligations, not guarantees.\n+//! Image metadata is read live; module lifetime races remain unvalidated.\nPUT >43:\n+\n+// Keep the failure escape independent of Rust stderr/allocator locks. These\n+// kernel32 APIs require no additional windows-sys feature activation.\n+#[link(name = \"kernel32\")]\n+extern \"system\" {\n+    fn GetStdHandle(which: u32) -> HANDLE;\n+    fn WriteFile(\n+        file: HANDLE,\n+        bytes: *const u8,\n+        length: u32,\n+        written: *mut u32,\n+        overlapped: *mut c_void,\n+    ) -> i32;\n+}\n+\n+fn emit_resume_failure() {\n+    const LINE: &[u8] = b\"NET_DIAG_RESUME_FAILED: watchdog permanently disarmed; worker resume unconfirmed\\r\\n\";\n+    let mut written = 0;\n+    unsafe {\n+        // One write attempt only. Missing/blocked stderr remains an OS failure\n+        // case; retrying or formatting here would worsen the unsafe condition.\n+        WriteFile(\n+            GetStdHandle(-12i32 as u32),\n+            LINE.as_ptr(),\n+            LINE.len() as u32,\n+            &mut written,\n+            null_mut(),\n+        );\n+    }\n+}\nPUT >85:\n+    fatal_capture: Option<Value>,\n+    disarmed: bool,\nPUT <136:\n+        let fatal_capture = json!({\n+            \"fatal_resume_failure\": true,\n+            \"failed_tid\": 0,\n+            \"resume_error\": 0,\n+            \"resume_retry_error\": 0,\n+            \"capture_duration_ms\": 0,\n+            \"workers\": worker_tids.map(|tid| json!({\n+                \"tid\": tid,\n+                \"activity\": \"unknown\",\n+                \"op_id\": null,\n+                \"frames\": [],\n+                \"progress_counter\": null,\n+                \"error\": \"paired capture abandoned: worker resume unconfirmed\"\n+            }))\n+        });\nPUT >140:\n+            fatal_capture: Some(fatal_capture),\n+            disarmed: false,\nPUT >144:\n+        if self.disarmed {\n+            return Value::Null;\n+        }\nPUT >148:\n+            if let Some(retry_error) = worker.resume_retry_error {\n+                self.disarmed = true;\n+                // No symbolization, Rust locks, allocation OR deallocation\n+                // after an unconfirmed resume. All keys already exist.\n+                let mut fatal = self.fatal_capture.take().unwrap_or(Value::Null);\n+                if let Some(value) = fatal.get_mut(\"failed_tid\") {\n+                    *value = Value::from(worker.tid);\n+                }\n+                if let Some(value) = fatal.get_mut(\"resume_error\") {\n+                    *value = Value::from(worker.resume_error.unwrap_or(0));\n+                }\n+                if let Some(value) = fatal.get_mut(\"resume_retry_error\") {\n+                    *value = Value::from(retry_error);\n+                }\n+                emit_resume_failure();\n+                if let Some(value) = fatal.get_mut(\"capture_duration_ms\") {\n+                    *value = Value::from(micros(started).div_ceil(1000));\n+                }\n+                return fatal;\n+            }\nPUT 237.=260:\n+struct ResumeGuard {\n+    handle: HANDLE,\n+    armed: bool,\n+}\n+\n+// A narrow seam for forced native-failure source checks: production invokes\n+// only ResumeThread/GetLastError here, with no allocation or Rust locks.\n+fn resume_twice(mut attempt: impl FnMut() -> Result<(), u32>) -> (Option<u32>, Option<u32>) {\n+    match attempt() {\n+        Ok(()) => (None, None),\n+        Err(first) => (Some(first), attempt().err()),\n+    }\n+}\n+\n+impl ResumeGuard {\n+    fn resume(&mut self) -> (Option<u32>, Option<u32>) {\n+        let result = resume_twice(|| {\n+            if unsafe { ResumeThread(self.handle) } == u32::MAX {\n+                Err(unsafe { GetLastError() })\n+            } else {\n+                Ok(())\n+            }\n+        });\n+        // Two failures are handed to the fatal path, never an unbounded retry.\n+        self.armed = false;\n+        result\n+    }\n+}\n+impl Drop for ResumeGuard {\n+    fn drop(&mut self) {\n+        if self.armed && self.resume().1.is_some() {\n+            emit_resume_failure();\n+        }\n+    }\n+}\nCUT 332.=332\nCUT 336.=336\nPUT 342.=342:\n+        (self.resume_error, self.resume_retry_error) = resume.resume();\nCUT 344.=344\nPUT 730.=730:\n+    use super::{is_tokio_idle, resume_twice};\n+\n+    #[test]\n+    fn failed_resume_stops_after_one_retry_and_preserves_both_errors() {\n+        let mut attempts = 0;\n+        let errors = resume_twice(|| {\n+            attempts += 1;\n+            Err(100 + attempts)\n+        });\n+        assert_eq!(attempts, 2);\n+        assert_eq!(errors, (Some(101), Some(102)));\n+    }\n+\n+    #[test]\n+    fn successful_resume_retry_does_not_report_fatal_failure() {\n+        let mut attempts = 0;\n+        let errors = resume_twice(|| {\n+            attempts += 1;\n+            if attempts == 1 { Err(5) } else { Ok(()) }\n+        });\n+        assert_eq!(attempts, 2);\n+        assert_eq!(errors, (Some(5), None));\n+    }\n*** End Patch\n","internal_chat_message_metadata_passthrough":{"create_time":1789542805.573829,"turn_id":"0a172348-2436-48ce-b956-755f953c2862"},"name":"edit","metadata":{"turn_id":"0a172348-2436-48ce-b956-755f953c2862"}}]},"duration":57026.83799999952,"ttft":12651.154300000519,"completedAt":1789542862192,"contextSnapshot":{"promptTokens":61128,"nonMessageTokens":16908,"compactionEpoch":0}}}
{"type":"message","id":"1ee20bbd","parentId":"849db171","timestamp":"2026-09-16T07:14:22.223Z","message":{"role":"toolResult","toolCallId":"call_6mexpD0sQQJJMSPKCQbcbH1g|ctc_0ba31c31d1cf7dc5016aaa41a7a34487d29f2aea82d5293fd8","toolName":"edit","content":[{"type":"text","text":"[.worktrees/302-net-worker-stamps/crates/spt-net-diag/src/stacks/windows.rs#3C26]\n1://! Stack bytes and register contexts are copied without Rust allocation/locks\n2://! while suspended. A resume failure gets one kernel-only retry. If it fails,\n…\n5://! Resumption and <=100ms remain native proof obligations, not guarantees.\n6://! Image metadata is read live; module lifetime races remain unvalidated.\n7:\n8:use serde_json::{json, Value};\n\n19:use windows_sys::Win32::{\n\n43:};\n44:\n45:// Keep the failure escape independent of Rust stderr/allocator locks. These\n46:// kernel32 APIs require no additional windows-sys feature activation.\n…\n73:}\n74:\n75:const STACK_BYTES: usize = 2 * 1024 * 1024;\n76:const MAX_FRAMES: usize = 128;\n\n111:pub(crate) struct StackSampler {\n\n114:    initialization_us: u64,\n115:    first_capture: bool,\n116:    fatal_capture: Option<Value>,\n117:    disarmed: bool,\n118:}\n119:\n\n121:    pub(crate) fn new(worker_tids: [u32; 2]) -> io::Result<Self> {\n\n158:        unsafe {\n\n162:            if SymRegisterCallback64(process.0, Some(symbol_callback), 0) == 0 {\n\n166:            }\n167:        }\n168:        let fatal_capture = json!({\n169:            \"fatal_resume_failure\": true,\n…\n181:            }))\n182:        });\n183:        Ok(Self {\n184:            workers,\n186:            initialization_us: micros(started),\n187:            first_capture: true,\n188:            fatal_capture: Some(fatal_capture),\n189:            disarmed: false,\n190:        })\n191:    }\n192:\n193:    pub(crate) fn capture(&mut self) -> Value {\n194:        if self.disarmed {\n195:            return Value::Null;\n196:        }\n197:        let started = Instant::now();\n198:        // No DbgHelp lock is held here: a suspended worker may itself own it.\n199:        for worker in &mut self.workers {\n200:            worker.copy_stack(self.process.0);\n201:            if let Some(retry_error) = worker.resume_retry_error {\n202:                self.disarmed = true;\n…\n219:                return fatal;\n220:            }\n221:        }\n222:        let copy_duration_us = micros(started);\n\n262:    }\n\n307:// Successful suspension owns precisely one suspend-count increment. Drop is the\n308:// fallback for all early returns/unwinds; explicit resume records OS failure.\n309:struct ResumeGuard {\n310:    handle: HANDLE,\n311:    armed: bool,\n312:}\n313:\n314:// A narrow seam for forced native-failure source checks: production invokes\n…\n318:        Ok(()) => (None, None),\n319:        Err(first) => (Some(first), attempt().err()),\n320:    }\n321:}\n322:\n323:impl ResumeGuard {\n324:    fn resume(&mut self) -> (Option<u32>, Option<u32>) {\n325:        let result = resume_twice(|| {\n326:            if unsafe { ResumeThread(self.handle) } == u32::MAX {\n327:                Err(unsafe { GetLastError() })\n328:            } else {\n329:                Ok(())\n330:            }\n331:        });\n332:        // Two failures are handed to the fatal path, never an unbounded retry.\n…\n339:        if self.armed && self.resume().1.is_some() {\n340:            emit_resume_failure();\n341:        }\n342:    }\n343:}\n\n394:    fn copy_stack(&mut self, process: HANDLE) {\n\n411:        if previous == u32::MAX {\n\n413:            return;\n414:        }\n415:        let mut resume = ResumeGuard {\n416:            handle: self.handle.0,\n417:            armed: true,\n418:        };\n419:        self.previous_suspend_count = Some(previous);\n421:        // APIs and QPC only. No allocation, formatting, logging, or mutexes.\n422:        self.copy_error = unsafe { self.copy_suspended(process) }.err();\n423:        (self.resume_error, self.resume_retry_error) = resume.resume();\n424:        drop(resume);\n425:        self.suspended_us = micros(began);\n426:    }\n808:#[cfg(test)]\n809:mod tests {\n810:    use super::{is_tokio_idle, resume_twice};\n811:\n812:    #[test]\n813:    fn failed_resume_stops_after_one_retry_and_preserves_both_errors() {\n814:        let mut attempts = 0;\n…\n833:\n834:    #[test]\n835:    fn generic_wait_and_active_reactor_do_not_prove_idle() {\n836:        assert!(!is_tokio_idle(&[\"ntdll!NtWaitForSingleObject\".into()]));\n\n862:    }\n863:}"}],"details":{"diff":"-1|//! Stack bytes and register contexts are copied while suspended. DbgHelp, Rust\n-2|//! allocation, formatting, and locks are deferred until resume attempts complete.\n-3|//! A failed resume AND failed guard retry remains a native safety blocker: the\n-4|//! worker may still own Rust/allocator locks. This backend is not field-approved.\n-5|//! Image/unwind metadata is read live; module lifetime races remain unvalidated.\n-6|//! Missing PDBs and stack-copy limits produce errors, not invented frames.\n+1|//! Stack bytes and register contexts are copied without Rust allocation/locks\n+2|//! while suspended. A resume failure gets one kernel-only retry. If it fails,\n+3|//! emit a static native emergency line and return preallocated fatal evidence;\n+4|//! the observer must disarm and retain (not drop) the sampler and evidence.\n+5|//! Resumption and <=100ms remain native proof obligations, not guarantees.\n+6|//! Image metadata is read live; module lifetime races remain unvalidated.\n 7|\n 8|use serde_json::{json, Value};\n\n 19|use windows_sys::Win32::{\n\n 43|};\n 44|\n+45|// Keep the failure escape independent of Rust stderr/allocator locks. These\n+46|// kernel32 APIs require no additional windows-sys feature activation.\n+47|#[link(name = \"kernel32\")]\n+48|extern \"system\" {\n+49|    fn GetStdHandle(which: u32) -> HANDLE;\n+50|    fn WriteFile(\n+51|        file: HANDLE,\n+52|        bytes: *const u8,\n+53|        length: u32,\n+54|        written: *mut u32,\n+55|        overlapped: *mut c_void,\n+56|    ) -> i32;\n+57|}\n+58|\n+59|fn emit_resume_failure() {\n+60|    const LINE: &[u8] = b\"NET_DIAG_RESUME_FAILED: watchdog permanently disarmed; worker resume unconfirmed\\r\\n\";\n+61|    let mut written = 0;\n+62|    unsafe {\n+63|        // One write attempt only. Missing/blocked stderr remains an OS failure\n+64|        // case; retrying or formatting here would worsen the unsafe condition.\n+65|        WriteFile(\n+66|            GetStdHandle(-12i32 as u32),\n+67|            LINE.as_ptr(),\n+68|            LINE.len() as u32,\n+69|            &mut written,\n+70|            null_mut(),\n+71|        );\n+72|    }\n+73|}\n+74|\n 45|const STACK_BYTES: usize = 2 * 1024 * 1024;\n 46|const MAX_FRAMES: usize = 128;\n\n 81|pub(crate) struct StackSampler {\n\n 84|    initialization_us: u64,\n 85|    first_capture: bool,\n+116|    fatal_capture: Option<Value>,\n+117|    disarmed: bool,\n 86|}\n 87|\n\n 89|    pub(crate) fn new(worker_tids: [u32; 2]) -> io::Result<Self> {\n\n 126|        unsafe {\n\n 130|            if SymRegisterCallback64(process.0, Some(symbol_callback), 0) == 0 {\n\n 134|            }\n 135|        }\n+168|        let fatal_capture = json!({\n+169|            \"fatal_resume_failure\": true,\n+170|            \"failed_tid\": 0,\n+171|            \"resume_error\": 0,\n+172|            \"resume_retry_error\": 0,\n+173|            \"capture_duration_ms\": 0,\n+174|            \"workers\": worker_tids.map(|tid| json!({\n+175|                \"tid\": tid,\n+176|                \"activity\": \"unknown\",\n+177|                \"op_id\": null,\n+178|                \"frames\": [],\n+179|                \"progress_counter\": null,\n+180|                \"error\": \"paired capture abandoned: worker resume unconfirmed\"\n+181|            }))\n+182|        });\n 136|        Ok(Self {\n 137|            workers,\n 139|            initialization_us: micros(started),\n 140|            first_capture: true,\n+188|            fatal_capture: Some(fatal_capture),\n+189|            disarmed: false,\n 141|        })\n 142|    }\n 143|\n 144|    pub(crate) fn capture(&mut self) -> Value {\n+194|        if self.disarmed {\n+195|            return Value::Null;\n+196|        }\n 145|        let started = Instant::now();\n 146|        // No DbgHelp lock is held here: a suspended worker may itself own it.\n 147|        for worker in &mut self.workers {\n 148|            worker.copy_stack(self.process.0);\n+201|            if let Some(retry_error) = worker.resume_retry_error {\n+202|                self.disarmed = true;\n+203|                // No symbolization, Rust locks, allocation OR deallocation\n+204|                // after an unconfirmed resume. All keys already exist.\n+205|                let mut fatal = self.fatal_capture.take().unwrap_or(Value::Null);\n+206|                if let Some(value) = fatal.get_mut(\"failed_tid\") {\n+207|                    *value = Value::from(worker.tid);\n+208|                }\n+209|                if let Some(value) = fatal.get_mut(\"resume_error\") {\n+210|                    *value = Value::from(worker.resume_error.unwrap_or(0));\n+211|                }\n+212|                if let Some(value) = fatal.get_mut(\"resume_retry_error\") {\n+213|                    *value = Value::from(retry_error);\n+214|                }\n+215|                emit_resume_failure();\n+216|                if let Some(value) = fatal.get_mut(\"capture_duration_ms\") {\n+217|                    *value = Value::from(micros(started).div_ceil(1000));\n+218|                }\n+219|                return fatal;\n+220|            }\n 149|        }\n 150|        let copy_duration_us = micros(started);\n\n 190|    }\n\n 235|// Successful suspension owns precisely one suspend-count increment. Drop is the\n 236|// fallback for all early returns/unwinds; explicit resume records OS failure.\n-237|struct ResumeGuard<'a> {\n+309|struct ResumeGuard {\n 238|    handle: HANDLE,\n 239|    armed: bool,\n-240|    retry_error: &'a mut Option<u32>,\n 241|}\n-242|impl ResumeGuard<'_> {\n-243|    fn resume(&mut self) -> Option<u32> {\n-244|        if unsafe { ResumeThread(self.handle) } == u32::MAX {\n-245|            Some(unsafe { GetLastError() })\n-246|        } else {\n-247|            self.armed = false;\n-248|            None\n-249|        }\n+313|\n+314|// A narrow seam for forced native-failure source checks: production invokes\n+315|// only ResumeThread/GetLastError here, with no allocation or Rust locks.\n+316|fn resume_twice(mut attempt: impl FnMut() -> Result<(), u32>) -> (Option<u32>, Option<u32>) {\n+317|    match attempt() {\n+318|        Ok(()) => (None, None),\n+319|        Err(first) => (Some(first), attempt().err()),\n 250|    }\n 251|}\n-252|impl Drop for ResumeGuard<'_> {\n-253|    fn drop(&mut self) {\n-254|        if self.armed {\n+322|\n+323|impl ResumeGuard {\n+324|    fn resume(&mut self) -> (Option<u32>, Option<u32>) {\n+325|        let result = resume_twice(|| {\n 255|            if unsafe { ResumeThread(self.handle) } == u32::MAX {\n-256|                *self.retry_error = Some(unsafe { GetLastError() });\n+327|                Err(unsafe { GetLastError() })\n+328|            } else {\n+329|                Ok(())\n 257|            }\n+331|        });\n+332|        // Two failures are handed to the fatal path, never an unbounded retry.\n+333|        self.armed = false;\n+334|        result\n+335|    }\n+336|}\n+337|impl Drop for ResumeGuard {\n+338|    fn drop(&mut self) {\n+339|        if self.armed && self.resume().1.is_some() {\n+340|            emit_resume_failure();\n 258|        }\n 259|    }\n 260|}\n\n 311|    fn copy_stack(&mut self, process: HANDLE) {\n\n 328|        if previous == u32::MAX {\n\n 330|            return;\n 331|        }\n-332|        let mut retry_error = None;\n 333|        let mut resume = ResumeGuard {\n 334|            handle: self.handle.0,\n 335|            armed: true,\n-336|            retry_error: &mut retry_error,\n 337|        };\n 338|        self.previous_suspend_count = Some(previous);\n 340|        // APIs and QPC only. No allocation, formatting, logging, or mutexes.\n 341|        self.copy_error = unsafe { self.copy_suspended(process) }.err();\n-342|        self.resume_error = resume.resume();\n+423|        (self.resume_error, self.resume_retry_error) = resume.resume();\n 343|        drop(resume);\n-344|        self.resume_retry_error = retry_error;\n 345|        self.suspended_us = micros(began);\n 346|    }\n 728|#[cfg(test)]\n 729|mod tests {\n-730|    use super::is_tokio_idle;\n+810|    use super::{is_tokio_idle, resume_twice};\n 731|\n 732|    #[test]\n+813|    fn failed_resume_stops_after_one_retry_and_preserves_both_errors() {\n+814|        let mut attempts = 0;\n+815|        let errors = resume_twice(|| {\n+816|            attempts += 1;\n+817|            Err(100 + attempts)\n+818|        });\n+819|        assert_eq!(attempts, 2);\n+820|        assert_eq!(errors, (Some(101), Some(102)));\n+821|    }\n+822|\n+823|    #[test]\n+824|    fn successful_resume_retry_does_not_report_fatal_failure() {\n+825|        let mut attempts = 0;\n+826|        let errors = resume_twice(|| {\n+827|            attempts += 1;\n+828|            if attempts == 1 { Err(5) } else { Ok(()) }\n+829|        });\n+830|        assert_eq!(attempts, 2);\n+831|        assert_eq!(errors, (Some(5), None));\n+832|    }\n+833|\n+834|    #[test]\n 733|    fn generic_wait_and_active_reactor_do_not_prove_idle() {\n 734|        assert!(!is_tokio_idle(&[\"ntdll!NtWaitForSingleObject\".into()]));\n\n 760|    }\n 761|}","firstChangedLine":1,"op":"update","path":"C:\\Users\\decid\\Documents\\projects\\spt-core\\.worktrees\\302-net-worker-stamps\\crates\\spt-net-diag\\src\\stacks\\windows.rs","snapshotsPruned":true},"isError":false,"timestamp":1789542862223}}
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{"type":"message","id":"4754f9e9","parentId":"eca9905e","timestamp":"2026-09-16T07:14:35.851Z","message":{"role":"toolResult","toolCallId":"call_Sd3olBFI8PKgPjQ3c1lqGQnr|fc_0ba31c31d1cf7dc5016aaa41db80ec87d28ed98be24f25e90a","toolName":"grep","content":[{"type":"text","text":"No matches found"}],"details":{"scopePath":".worktrees/302-net-worker-stamps","searchPath":"C:\\Users\\decid\\Documents\\projects\\spt-core\\.worktrees\\302-net-worker-stamps","cwd":"C:\\Users\\decid\\Documents\\projects\\spt-core","matchCount":0,"fileCount":0,"files":[],"truncated":false},"isError":false,"useless":true,"timestamp":1789542875851}}
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{"type":"message","id":"78c94c8e","parentId":"8e9c8509","timestamp":"2026-09-16T07:14:57.890Z","message":{"role":"assistant","content":[{"type":"thinking","thinking":"**Preparing native failure paths**\n\n**Verifying fatal cleanup**"},{"type":"toolCall","id":"call_rwWcUdJpm3LRyAaCEEj64atT|fc_0ba31c31d1cf7dc5016aaa41eeb20887d29e3b7c88d6997123","name":"hub","arguments":{"i":"Delivering fatal capture integration contract","op":"send","to":"Main","message":"Implemented windows.rs fatal path: Worker::copy_stack -> ResumeGuard::resume -> resume_twice exactly <=2 ResumeThread attempts -> fatal on second failure. capture sets disarmed=true, moves prebuilt fatal_capture JSON (fatal_resume_failure:true, failed_tid/resume_error/resume_retry_error/capture_duration_ms), emits one static NET_DIAG_RESUME_FAILED via kernel32 WriteFile, returns before another worker, DbgHelp, allocation or Rust locks. Subsequent capture returns Null. Caller MUST forget sampler + fatal Value and avoid Rust logging on branch. Two forced failure/retry unit sources added, NOT run. 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native failure paths**"},{"type":"summary_text","text":"**Verifying fatal cleanup**"}],"metadata":{"turn_id":"0a172348-2436-48ce-b956-755f953c2862"}},{"id":"fc_0ba31c31d1cf7dc5016aaa41eeb20887d29e3b7c88d6997123","type":"function_call","status":"completed","arguments":"{\"i\":\"Delivering fatal capture integration contract\",\"op\":\"send\",\"to\":\"Main\",\"message\":\"Implemented windows.rs fatal path: Worker::copy_stack -> ResumeGuard::resume -> resume_twice exactly <=2 ResumeThread attempts -> fatal on second failure. capture sets disarmed=true, moves prebuilt fatal_capture JSON (fatal_resume_failure:true, failed_tid/resume_error/resume_retry_error/capture_duration_ms), emits one static NET_DIAG_RESUME_FAILED via kernel32 WriteFile, returns before another worker, DbgHelp, allocation or Rust locks. 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{"type":"message","id":"bec87720","parentId":"78c94c8e","timestamp":"2026-09-16T07:14:57.891Z","message":{"role":"toolResult","toolCallId":"call_rwWcUdJpm3LRyAaCEEj64atT|fc_0ba31c31d1cf7dc5016aaa41eeb20887d29e3b7c88d6997123","toolName":"hub","content":[{"type":"text","text":"Delivered to 1 peer(s):\n- Main: injected"}],"details":{"op":"send","from":"StackSource302","to":"Main","receipts":[{"to":"Main","outcome":"injected"}]},"isError":false,"timestamp":1789542897891}}
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{"type":"message","id":"44ccc2fc","parentId":"e4ce0de6","timestamp":"2026-09-16T07:15:41.375Z","message":{"role":"assistant","content":[{"type":"thinking","thinking":"**Reviewing symbol-loading setup**\n\n**Finalizing symbol checks**"},{"type":"toolCall","id":"call_0qStAcYvCxUMRa4iZKK8apf4|fc_0ba31c31d1cf7dc5016aaa420638a087d2814530c084ab3d7e","name":"yield","arguments":{"data":{"changed":[".worktrees/302-net-worker-stamps/crates/spt-net-diag/src/stacks/windows.rs"],"intentionally_unchanged":["crates/spt-net-diag/src/stacks.rs: unsupported backend already preserves input TID order and truthful errors.","lib.rs, nethost, manifests: ownership respected."],"edits":["Removed nonexistent REQ-RC-HITCH-BOUNDARY-STAMPS comment.","Registered CBA_READ_MEMORY callback; symbol-handler reads use the copied stack/live-image-only reader. Live-image reads now require committed, non-guard/non-NOACCESS memory and the entire requested range within its queried image region; partial reads fail.","Applied/restored identical restricted DbgHelp options during initialization and capture. Explicit matching-PDB policy rejects unmatched/missing PDB evidence; ignored CodeView paths and disabled symbol-server autodetection avoid inherited build-machine/server searches.","Preserved original aligned CONTEXT while StackWalk64 mutates a copy; emitted original RIP/RSP/RBP alongside real raw PCs.","Restricted idle classification to exact known wait/park symbol names, requiring ntdll at the leaf; added source assertions rejecting application-prefix and fake-native-symbol matches.","Recorded initialization_us, first_capture, symbolization_us, symbol-lock wait, sequential-capture disclosure, resume confirmation and truthful suspend-duration upper-bound applicability. Capture duration includes evidence assembly and rounds milliseconds upward.","Added bounded resume_twice helper: at most two native ResumeThread attempts, preserving both errors. Two failures permanently disarm the backend, stop before another worker or symbolization, emit one static NET_DIAG_RESUME_FAILED line through native WriteFile, and move preallocated fatal JSON without Rust allocation/locks.","Fatal JSON contract: fatal_resume_failure:true, failed_tid, resume_error, resume_retry_error, capture_duration_ms, and both input-ordered workers with unknown activity/errors/no fabricated frames. Later capture calls return Null.","Added forced-failure and successful-retry unit source checks for bounded attempt count and preserved error outcomes. Not executed."],"main_integration":"Main informed: on fatal_resume_failure, permanently disarm observer and mem::forget both sampler and fatal Value; do not enrich/log/drop them through Rust while resumption is unconfirmed. Existing sampler Drop takes DBGHELP and normal field destruction can enter the allocator.","initialization_effects":"new() synchronously opens workers, allocates/pre-touches 4 MiB of copy buffers, acquires DBGHELP, eagerly initializes symbols/PDBs, and preallocates fatal evidence. initialization_us is exposed on normal capture, but Main must measure new() independently, including Err paths, without backdating START/heartbeat. Initial/late symbol loading and DbgHelp contention can exceed capture budget; first_capture and symbolization_us expose rather than exclude those costs.","unvalidated_risks":["All source remains uncompiled and unexecuted. No Cargo, builds, tests, formatter, linter, runtime, debugger, resident interaction, commit or lifecycle action occurred.","<=100ms remains an authorized-native-proof obligation, not a claim or enforced OS deadline.","Both ResumeThread attempts can fail on a live worker. Disarm prevents further sampling but cannot guarantee resumption; that safety case still blocks field staging.","Native synchronous WriteFile is allocation/lock-independent from Rust but can block on stderr backpressure, fail, or write partially; exactly one attempt avoids an unbounded emergency retry.","Other in-process DbgHelp users do not share this private mutex automatically. DbgHelp concurrency/global-option interference remains a native integration risk.","Live image/unwind metadata can unload/change after resume. Dynamic code, copied-stack limits, missing matched system/application PDBs and unfamiliar Rust symbol spellings may leave explicit errors/unknown 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{"type":"message","id":"39756556","parentId":"44ccc2fc","timestamp":"2026-09-16T07:15:41.376Z","message":{"role":"toolResult","toolCallId":"call_0qStAcYvCxUMRa4iZKK8apf4|fc_0ba31c31d1cf7dc5016aaa420638a087d2814530c084ab3d7e","toolName":"yield","content":[{"type":"text","text":"Result submitted."}],"details":{"data":{"changed":[".worktrees/302-net-worker-stamps/crates/spt-net-diag/src/stacks/windows.rs"],"intentionally_unchanged":["crates/spt-net-diag/src/stacks.rs: unsupported backend already preserves input TID order and truthful errors.","lib.rs, nethost, manifests: ownership respected."],"edits":["Removed nonexistent REQ-RC-HITCH-BOUNDARY-STAMPS comment.","Registered CBA_READ_MEMORY callback; symbol-handler reads use the copied stack/live-image-only reader. Live-image reads now require committed, non-guard/non-NOACCESS memory and the entire requested range within its queried image region; partial reads fail.","Applied/restored identical restricted DbgHelp options during initialization and capture. Explicit matching-PDB policy rejects unmatched/missing PDB evidence; ignored CodeView paths and disabled symbol-server autodetection avoid inherited build-machine/server searches.","Preserved original aligned CONTEXT while StackWalk64 mutates a copy; emitted original RIP/RSP/RBP alongside real raw PCs.","Restricted idle classification to exact known wait/park symbol names, requiring ntdll at the leaf; added source assertions rejecting application-prefix and fake-native-symbol matches.","Recorded initialization_us, first_capture, symbolization_us, symbol-lock wait, sequential-capture disclosure, resume confirmation and truthful suspend-duration upper-bound applicability. Capture duration includes evidence assembly and rounds milliseconds upward.","Added bounded resume_twice helper: at most two native ResumeThread attempts, preserving both errors. Two failures permanently disarm the backend, stop before another worker or symbolization, emit one static NET_DIAG_RESUME_FAILED line through native WriteFile, and move preallocated fatal JSON without Rust allocation/locks.","Fatal JSON contract: fatal_resume_failure:true, failed_tid, resume_error, resume_retry_error, capture_duration_ms, and both input-ordered workers with unknown activity/errors/no fabricated frames. Later capture calls return Null.","Added forced-failure and successful-retry unit source checks for bounded attempt count and preserved error outcomes. Not executed."],"main_integration":"Main informed: on fatal_resume_failure, permanently disarm observer and mem::forget both sampler and fatal Value; do not enrich/log/drop them through Rust while resumption is unconfirmed. Existing sampler Drop takes DBGHELP and normal field destruction can enter the allocator.","initialization_effects":"new() synchronously opens workers, allocates/pre-touches 4 MiB of copy buffers, acquires DBGHELP, eagerly initializes symbols/PDBs, and preallocates fatal evidence. initialization_us is exposed on normal capture, but Main must measure new() independently, including Err paths, without backdating START/heartbeat. Initial/late symbol loading and DbgHelp contention can exceed capture budget; first_capture and symbolization_us expose rather than exclude those costs.","unvalidated_risks":["All source remains uncompiled and unexecuted. No Cargo, builds, tests, formatter, linter, runtime, debugger, resident interaction, commit or lifecycle action occurred.","<=100ms remains an authorized-native-proof obligation, not a claim or enforced OS deadline.","Both ResumeThread attempts can fail on a live worker. Disarm prevents further sampling but cannot guarantee resumption; that safety case still blocks field staging.","Native synchronous WriteFile is allocation/lock-independent from Rust but can block on stderr backpressure, fail, or write partially; exactly one attempt avoids an unbounded emergency retry.","Other in-process DbgHelp users do not share this private mutex automatically. DbgHelp concurrency/global-option interference remains a native integration risk.","Live image/unwind metadata can unload/change after resume. Dynamic code, copied-stack limits, missing matched system/application PDBs and unfamiliar Rust symbol spellings may leave explicit errors/unknown classification."],"references":["https://learn.microsoft.com/en-us/windows/win32/api/dbghelp/nf-dbghelp-stackwalk64","https://learn.microsoft.com/en-us/windows/win32/api/dbghelp/nf-dbghelp-symsetoptions","https://learn.microsoft.com/en-us/windows/win32/api/dbghelp/nc-dbghelp-psymbol_registered_callback64"]},"status":"success"},"isError":false,"timestamp":1789542941376}}
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