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PERF_COUNTERSET_INSTANCE structure (perflib.h)

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Defines an instance of a counter set.

Syntax

typedef struct _PERF_COUNTERSET_INSTANCE {
  GUID  CounterSetGuid;
  ULONG dwSize;
  ULONG InstanceId;
  ULONG InstanceNameOffset;
  ULONG InstanceNameSize;
} PERF_COUNTERSET_INSTANCE, *PPERF_COUNTERSET_INSTANCE;

Members

CounterSetGuid

GUID that identifies the counter set to which this instance belongs.

dwSize

Size, in bytes, of the instance block. The instance block contains this structure, followed by one or more PERF_COUNTER_INFO blocks, and ends with the instance name.

InstanceId

Identifier that uniquely identifies this instance.

The provider specified the identifier when calling PerfCreateInstance.

InstanceNameOffset

Byte offset from the beginning of this structure to the null-terminated Unicode instance name.

The provider specified the instance name when calling PerfCreateInstance.

InstanceNameSize

Size, in bytes, of the instance name. The size includes the null-terminator.

Remarks

The Offset member of PERF_COUNTER_INFO contains the byte offset from the beginning of the PERF_COUNTERSET_INSTANCE block to the counter's raw counter value.

Requirements

Requirement Value
Minimum supported client Windows Vista [desktop apps only]
Minimum supported server Windows Server 2008 [desktop apps only]
Header perflib.h

See also

PERF_COUNTER_INFO

PerfCreateInstance

PerfDeleteInstance

PerfQueryInstance