<xs:schema
  targetNamespace="http://schemas.microsoft.com/win/2005/12/counters"
  elementFormDefault="qualified"
  xmlns:man="http://schemas.microsoft.com/win/2005/12/counters"
  xmlns:xs="http://www.w3.org/2001/XMLSchema">

  <xs:element name="counters" type="man:counters">
    <xs:annotation>
      <xs:documentation>
        A counters element may occur within the &lt;instrumentation&gt; element
        of an instrumentation manifest. Refer to eventman.xsd for the
        instrumentation manifest schema.
      </xs:documentation>
    </xs:annotation>
    <xs:key name="uniqueCounterSetGUID">
      <xs:annotation>
        <xs:documentation>
          counterSet.guid must be unique.
        </xs:documentation>
      </xs:annotation>
      <xs:selector xpath="./man:provider/man:counterSet"/>
      <xs:field xpath="@guid"/>
    </xs:key>
  </xs:element>

  <xs:complexType name="counters">
    <xs:annotation>
      <xs:documentation>
        Defines a Windows Performance Counter V2 provider.
      </xs:documentation>
    </xs:annotation>
    <xs:choice minOccurs="1" maxOccurs="1">
      <xs:element name="provider" type="man:provider"/>
    </xs:choice>
    <xs:attribute name="schemaVersion" type="xs:string" use="required"/>
  </xs:complexType>

  <xs:complexType name="provider">
    <xs:annotation>
      <xs:documentation>
        A provider is a component that publishes data for one or more
        countersets.
      </xs:documentation>
    </xs:annotation>
    <xs:choice minOccurs="0" maxOccurs="unbounded">
      <xs:element name="counterSet" type="man:counterSet"/>
    </xs:choice>
    <xs:attribute name="symbol" type="man:CSymbolType" use="optional">
      <xs:annotation>
        <xs:documentation>
          Provider Symbol is required for User Mode providers.
        </xs:documentation>
      </xs:annotation>
    </xs:attribute>
    <xs:attribute name="callback" use="optional" default="default">
      <xs:simpleType>
        <xs:restriction base="xs:string">
          <xs:enumeration value="custom"/>
          <xs:enumeration value="default"/>
        </xs:restriction>
      </xs:simpleType>
    </xs:attribute>
    <xs:attribute name="providerGuid" type="man:GUIDType" use="required"/>
    <xs:attribute name="applicationIdentity" type="xs:string" use="required">
      <xs:annotation>
        <xs:documentation>
          Specify the name of the binary (DLL, EXE, or SYS file) into which the
          string resources for this provider will be linked. During provider
          installation via "lodctr.exe /m:ManifestFile InstallationPath", the
          value of this attribute will be combined with the InstallationPath
          to determine the full path to the provider binary. The full path will
          be recorded as part of provider installation and used when the
          provider string resources are needed.
        </xs:documentation>
      </xs:annotation>
    </xs:attribute>
    <xs:attribute name="providerType" use="optional" default="userMode">
      <xs:simpleType>
        <xs:restriction base="xs:string">
          <xs:enumeration value="userMode"/>
          <xs:enumeration value="kernelMode"/>
        </xs:restriction>
      </xs:simpleType>
    </xs:attribute>
    <xs:attribute name="providerName" type="xs:string" use="optional" default="Counters"/>
    <xs:attribute name="resourceBase" type="man:UInt32Type" use="optional">
      <xs:annotation>
        <xs:documentation>
          This attribute is not allowed for schemaVersion >= 2.0.
        </xs:documentation>
      </xs:annotation>
    </xs:attribute>
  </xs:complexType>

  <xs:complexType name="counterSet">
    <xs:sequence>
      <xs:element name="structs" type="man:structs" minOccurs="0" maxOccurs="1">
        <xs:annotation>
          <xs:documentation>
            If providerType=userMode, required.
            If providerType=kernelMode, not allowed.
          </xs:documentation>
        </xs:annotation>
      </xs:element>
      <xs:element name="counter" type="man:counter" minOccurs="1" maxOccurs="unbounded"/>
    </xs:sequence>
    <xs:attribute name="symbol" type="man:CSymbolType" use="required"/>
    <xs:attribute name="guid" type="man:GUIDType" use="required"/>
    <xs:attribute name="uri" type="xs:anyURI" use="required"/>
    <xs:attribute name="name" use="required">
      <xs:simpleType>
        <xs:restriction base="xs:string">
          <xs:maxLength value="1023"/>
        </xs:restriction>
      </xs:simpleType>
    </xs:attribute>
    <xs:attribute name="nameID" type="man:UInt32Type" use="optional">
      <xs:annotation>
        <xs:documentation>
          Resource ID of the name string. This attribute is required
          for schemaVersion >= 2.0, and not allowed for older versions.
        </xs:documentation>
      </xs:annotation>
    </xs:attribute>
    <xs:attribute name="description" use="required"/>
    <xs:attribute name="descriptionID" type="man:UInt32Type" use="optional">
      <xs:annotation>
        <xs:documentation>
          Resource ID of the description string. This attribute is required
          for schemaVersion >= 2.0, and not allowed for older versions.
        </xs:documentation>
      </xs:annotation>
    </xs:attribute>
    <xs:attribute name="instances" use="optional" default="single">
      <xs:simpleType>
        <xs:restriction base="xs:string">
          <xs:enumeration value="single"/>
          <xs:enumeration value="multiple"/>
          <xs:enumeration value="globalAggregate"/>
          <xs:enumeration value="multipleAggregate"/>
          <xs:enumeration value="globalAggregateHistory"/>
        </xs:restriction>
      </xs:simpleType>
    </xs:attribute>
  </xs:complexType>

  <xs:complexType name="structs">
    <xs:choice minOccurs="1" maxOccurs="unbounded">
      <xs:element name="struct" type="man:struct"/>
    </xs:choice>
  </xs:complexType>

  <xs:complexType name="struct" mixed="true">
    <xs:attribute name="name" type="man:CSymbolType" use="required"/>
    <xs:attribute name="type" type="man:CSymbolType" use="required"/>
  </xs:complexType>

  <xs:complexType name="counter">
    <xs:choice minOccurs="0" maxOccurs="1">
      <xs:element name="counterAttributes" type="man:counterAttributes">
        <xs:key name="uniqueCounterAttributeName">
          <xs:annotation>
            <xs:documentation>
              Only five counterAttribute elements allowed. They should all be unique.
            </xs:documentation>
          </xs:annotation>
          <xs:selector xpath="./man:counterAttribute"/>
          <xs:field xpath="@name"/>
        </xs:key>
      </xs:element>
    </xs:choice>
    <xs:attribute name="symbol" type="man:CSymbolType" use="optional"/>
    <xs:attribute name="id" type="man:UInt32Type" use="required"/>
    <xs:attribute name="uri" type="xs:anyURI" use="required"/>
    <xs:attribute name="name" use="optional">
      <xs:annotation>
        <xs:documentation>
          This attribute is required for schemaVersion >= 2.0.
        </xs:documentation>
      </xs:annotation>
      <xs:simpleType>
        <xs:restriction base="xs:string">
          <xs:maxLength value="1023"/>
        </xs:restriction>
      </xs:simpleType>
    </xs:attribute>
    <xs:attribute name="nameID" type="man:UInt32Type" use="optional">
      <xs:annotation>
        <xs:documentation>
          Resource ID of the name string. This attribute is required
          for schemaVersion >= 2.0. It is not allowed for older versions.
        </xs:documentation>
      </xs:annotation>
    </xs:attribute>
    <xs:attribute name="description" type="xs:string" use="optional">
      <xs:annotation>
        <xs:documentation>
          This attribute is required for schemaVersion >= 2.0.
        </xs:documentation>
      </xs:annotation>
    </xs:attribute>
    <xs:attribute name="descriptionID" type="man:UInt32Type" use="optional">
      <xs:annotation>
        <xs:documentation>
          Resource ID of the description string. This attribute is required
          for schemaVersion >= 2.0. It is not allowed for older versions.
        </xs:documentation>
      </xs:annotation>
    </xs:attribute>
    <xs:attribute name="type" use="required">
      <xs:simpleType>
        <xs:restriction base="xs:string">
          <xs:enumeration value="perf_counter_counter"/>
          <xs:enumeration value="perf_counter_timer"/>
          <xs:enumeration value="perf_counter_queuelen_type"/>
          <xs:enumeration value="perf_counter_large_queuelen_type"/>
          <xs:enumeration value="perf_counter_100ns_queuelen_type"/>
          <xs:enumeration value="perf_counter_obj_time_queuelen_type"/>
          <xs:enumeration value="perf_counter_bulk_count"/>
          <xs:enumeration value="perf_counter_text"/>
          <xs:enumeration value="perf_counter_rawcount"/>
          <xs:enumeration value="perf_counter_large_rawcount"/>
          <xs:enumeration value="perf_counter_rawcount_hex"/>
          <xs:enumeration value="perf_counter_large_rawcount_hex"/>
          <xs:enumeration value="perf_sample_fraction"/>
          <xs:enumeration value="perf_sample_counter"/>
          <xs:enumeration value="perf_counter_timer_inv"/>
          <xs:enumeration value="perf_sample_base"/>
          <xs:enumeration value="perf_average_timer"/>
          <xs:enumeration value="perf_average_base"/>
          <xs:enumeration value="perf_average_bulk"/>
          <xs:enumeration value="perf_obj_time_timer"/>
          <xs:enumeration value="perf_100nsec_timer"/>
          <xs:enumeration value="perf_100nsec_timer_inv"/>
          <xs:enumeration value="perf_counter_multi_timer"/>
          <xs:enumeration value="perf_counter_multi_timer_inv"/>
          <xs:enumeration value="perf_counter_multi_base"/>
          <xs:enumeration value="perf_100nsec_multi_timer"/>
          <xs:enumeration value="perf_100nsec_multi_timer_inv"/>
          <xs:enumeration value="perf_raw_fraction"/>
          <xs:enumeration value="perf_large_raw_fraction"/>
          <xs:enumeration value="perf_raw_base"/>
          <xs:enumeration value="perf_large_raw_base"/>
          <xs:enumeration value="perf_elapsed_time"/>
          <xs:enumeration value="perf_counter_delta"/>
          <xs:enumeration value="perf_counter_large_delta"/>
          <xs:enumeration value="perf_precision_system_timer"/>
          <xs:enumeration value="perf_precision_100ns_timer"/>
          <xs:enumeration value="perf_precision_object_timer"/>
          <xs:enumeration value="perf_counter_composite"/>
        </xs:restriction>
      </xs:simpleType>
    </xs:attribute>
    <xs:attribute name="baseID" type="man:UInt32Type" use="optional"/>
    <xs:attribute name="detailLevel" use="required">
      <xs:simpleType>
        <xs:restriction base="xs:string">
          <xs:enumeration value="standard"/>
          <xs:enumeration value="advanced"/>
        </xs:restriction>
      </xs:simpleType>
    </xs:attribute>
    <xs:attribute name="defaultScale" use="optional" default="0">
      <xs:simpleType>
        <xs:restriction base="xs:integer">
          <xs:minInclusive value="-10"/>
          <xs:maxInclusive value="10"/>
        </xs:restriction>
      </xs:simpleType>
    </xs:attribute>
    <xs:attribute name="aggregate" use="optional">
      <xs:simpleType>
        <xs:restriction base="xs:string">
          <xs:enumeration value="sum"/>
          <xs:enumeration value="avg"/>
          <xs:enumeration value="max"/>
          <xs:enumeration value="min"/>
          <xs:enumeration value="undefined"/>
        </xs:restriction>
      </xs:simpleType>
    </xs:attribute>
    <xs:attribute name="perfTimeID" type="man:UInt32Type" use="optional"/>
    <xs:attribute name="perfFreqID" type="man:UInt32Type" use="optional"/>
    <xs:attribute name="multiCounterID" type="man:UInt32Type" use="optional"/>
    <xs:attribute name="struct" type="man:CSymbolType" use="optional">
      <xs:annotation>
        <xs:documentation>
          If providerType=userMode, required.
          If providerType=kernelMode, not allowed.
        </xs:documentation>
      </xs:annotation>
    </xs:attribute>
    <xs:attribute name="field" type="man:CSymbolType" use="optional">
      <xs:annotation>
        <xs:documentation>
          If providerType=userMode, required.
          If providerType=kernelMode, not allowed.
        </xs:documentation>
      </xs:annotation>
    </xs:attribute>
  </xs:complexType>

  <xs:complexType name="counterAttributes">
    <xs:choice minOccurs="1" maxOccurs="5">
      <xs:element name="counterAttribute" type="man:counterAttribute"/>
    </xs:choice>
  </xs:complexType>

  <xs:complexType name="counterAttribute" mixed="true">
    <xs:attribute name="name" use="required">
      <xs:simpleType>
        <xs:restriction base="xs:string">
          <xs:enumeration value="reference"/>
          <xs:enumeration value="noDisplay"/>
          <xs:enumeration value="noDigitGrouping"/>
          <xs:enumeration value="displayAsHex"/>
          <xs:enumeration value="displayAsReal"/>
        </xs:restriction>
      </xs:simpleType>
    </xs:attribute>
  </xs:complexType>

  <xs:simpleType name="GUIDType">
    <xs:annotation>
      <xs:documentation>
        A globally unique identifier in Registry format,
        e.g. {12345678-4321-ABCD-1234-9ABCDEF012345678}.
        Use GUIDGen.exe or UUIDGen.exe to create a GUID.
      </xs:documentation>
    </xs:annotation>
    <xs:restriction base="xs:string">
      <xs:pattern value="\{[0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{12}\}"/>
    </xs:restriction>
  </xs:simpleType>

  <xs:simpleType name="HexInt32Type">
    <xs:annotation>
      <xs:documentation>1-8 hexadecimal digits with '0x' prefix.</xs:documentation>
    </xs:annotation>
    <xs:restriction base="xs:string">
      <xs:pattern value="0[xX][0-9A-Fa-f]{1,8}"/>
    </xs:restriction>
  </xs:simpleType>

  <xs:simpleType name="UInt32Type">
    <xs:annotation>
      <xs:documentation>
        32-bit unsigned decimal or hexadecimal integer. Decimal should have no
        leading 0s. Hexadecimal requires '0x' prefix.
      </xs:documentation>
    </xs:annotation>
    <xs:union memberTypes="xs:unsignedInt man:HexInt32Type"/>
  </xs:simpleType>

  <xs:simpleType name="CSymbolType">
    <xs:annotation>
      <xs:documentation>
        Symbol is used for code-generation. It should be a valid C Symbol or an empty string.
      </xs:documentation>
    </xs:annotation>
    <xs:restriction base="xs:string">
      <xs:pattern value="()|([_a-zA-Z][_0-9a-zA-Z]*)"/>
    </xs:restriction>
  </xs:simpleType>

</xs:schema>