PERF_COUNTER_BLOCK structure (winperf.h)
Describes the block of memory that contains the raw performance counter data for an object's counters.
Syntax
typedef struct _PERF_COUNTER_BLOCK {
DWORD ByteLength;
} PERF_COUNTER_BLOCK, *PPERF_COUNTER_BLOCK;
Members
ByteLength
Size of this structure and the raw counter data that follows, in bytes.
Remarks
The CounterOffset member of PERF_COUNTER_DEFINITION provides the offset from the beginning of this structure to the counter value.
The location of the PERF_COUNTER_BLOCK structure within the PERF_OBJECT_TYPE block depends on if the object contains instances. For details, see Performance Data Format.
You must ensure that the size of the counter block is aligned to an 8-byte boundary. For example, if the performance object includes two DWORD counters, you must add an additional four bytes to the counter block to make it aligned to an 8-byte boundary.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | Windows XP [desktop apps only] |
| Minimum supported server | Windows Server 2003 [desktop apps only] |
| Header | winperf.h (include Windows.h) |