68 lines
936 B
C
68 lines
936 B
C
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/*++
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Copyright (c) 2000-2002 Microsoft Corporation
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Module Name:
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largemem.h
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Abstract:
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The public definition of large memory allocator interfaces.
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Author:
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George V. Reilly (GeorgeRe) 10-Nov-2000
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Revision History:
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--*/
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#ifndef _LARGEMEM_H_
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#define _LARGEMEM_H_
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NTSTATUS
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UlLargeMemInitialize(
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);
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VOID
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UlLargeMemTerminate(
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VOID
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);
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ULONG
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UlLargeMemUsagePercentage(
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VOID
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);
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PMDL
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UlLargeMemAllocate(
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IN ULONG Length
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);
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VOID
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UlLargeMemFree(
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IN PMDL pMdl
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);
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BOOLEAN
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UlLargeMemSetData(
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IN PMDL pMdl,
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IN PUCHAR pBuffer,
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IN ULONG Length,
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IN ULONG Offset
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);
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// 2^20 = 1MB
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#define MEGABYTE_SHIFT 20
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C_ASSERT(PAGE_SHIFT < MEGABYTE_SHIFT);
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#define PAGES_TO_MEGABYTES(P) ((P) >> (MEGABYTE_SHIFT - PAGE_SHIFT))
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#define MEGABYTES_TO_PAGES(M) ((M) << (MEGABYTE_SHIFT - PAGE_SHIFT))
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#define MEGABYTES_TO_BYTES(M) ((M) << (MEGABYTE_SHIFT))
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#endif // _LARGEMEM_H_
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