MmFreeContiguousMemorySpecifyCache function (wdm.h)
The MmFreeContiguousMemorySpecifyCache routine frees a buffer that was allocated by an MmAllocateContiguousMemorySpecifyCacheXxx routine.
Syntax
void MmFreeContiguousMemorySpecifyCache(
[in] PVOID BaseAddress,
[in] SIZE_T NumberOfBytes,
[in] MEMORY_CACHING_TYPE CacheType
);
Parameters
[in] BaseAddress
Specifies the base address of the buffer to be freed. Must match the address returned by the MmAllocateContiguousMemorySpecifyCacheXxx call that allocated the buffer.
[in] NumberOfBytes
Specifies the size in bytes of the buffer to be freed. Must match the size requested when the buffer was allocated by the MmAllocateContiguousMemorySpecifyCacheXxx routine.
[in] CacheType
Specifies the cache type of the buffer to be freed. Must match the cache type requested when the buffer was allocated by the MmAllocateContiguousMemorySpecifyCacheXxx routine.
Return value
None
Remarks
The MmFreeContiguousMemorySpecifyCache routine frees a block of physically contiguous memory that was allocated by a previous call to the MmAllocateContiguousMemorySpecifyCache or MmAllocateContiguousMemorySpecifyCacheNode routine. However, MmFreeContiguousMemory is the preferred routine to use to free memory that was allocated by an MmAllocateContiguousMemorySpecifyCacheXxx routine. MmFreeContiguousMemory is faster than MmFreeContiguousMemorySpecifyCache and requires fewer parameters.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | Available starting with Windows 2000. |
| Target Platform | Universal |
| Header | wdm.h (include Wdm.h, Ntddk.h) |
| Library | NtosKrnl.lib |
| DLL | NtosKrnl.exe |
| IRQL | <= DISPATCH_LEVEL |
See also
MmAllocateContiguousMemorySpecifyCache