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WHvGetPartitionCounters.md

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title description author ms.author ms.date
WHvGetPartitionCounters
Description on WHvGetPartitionCounters and understanding its parameters, syntax, and return value.
jstarks
jostarks
06/06/2019

WHvGetPartitionCounters

Syntax

typedef enum WHV_PARTITION_COUNTER_SET
{
    WHvPartitionCounterSetMemory,
} WHV_PARTITION_COUNTER_SET;

typedef struct WHV_PARTITION_MEMORY_COUNTERS
{
    UINT64 Mapped4KPageCount;
    UINT64 Mapped2MPageCount;
    UINT64 Mapped1GPageCount;
} WHV_PARTITION_MEMORY_COUNTERS;

HRESULT
WINAPI
WHvGetPartitionCounters(
    _In_ WHV_PARTITION_HANDLE Partition,
    _In_ WHV_PARTITION_COUNTER_SET CounterSet,
    _Out_writes_bytes_to_(BufferSizeInBytes, *BytesWritten) VOID* Buffer,
    _In_ UINT32 BufferSizeInBytes,
    _Out_opt_ UINT32* BytesWritten
    );

Parameters

Partition

Specifies the partition to query.

CounterSet

Specifies the counter set to query.

Buffer

Specifies the buffer to write the counters into.

BufferSizeInBytes

Specifies Buffer's size in bytes.

BytesWritten

If non-NULL, specifies a pointer that will be updated with the size of the counter set in bytes.

Return Value

If the operation completed successfully, the return value is S_OK.

If an unrecognized value was passed for CounterSet, the return value is WHV_E_UNKNOWN_PROPERTY.