163 lines
2.5 KiB
C
163 lines
2.5 KiB
C
|
/*++
|
|||
|
|
|
|||
|
|
Copyright (c) 1990 Microsoft Corporation
|
|||
|
|
|
|||
|
|
Module Name:
|
|||
|
|
|
|||
|
|
MEMORY.C
|
|||
|
|
|
|||
|
|
Abstract:
|
|||
|
|
|
|||
|
|
This file contains the routines that deal with memory management.
|
|||
|
|
|
|||
|
|
Author:
|
|||
|
|
|
|||
|
|
Rajen Shah (rajens) 12-Jul-1991
|
|||
|
|
|
|||
|
|
[Environment:]
|
|||
|
|
|
|||
|
|
User Mode - Win32, except for NTSTATUS returned by some functions.
|
|||
|
|
|
|||
|
|
Revision History:
|
|||
|
|
|
|||
|
|
Jonathan Schwartz (jschwart) 10-Dec-1999
|
|||
|
|
Have the Eventlog use its own heap
|
|||
|
|
|
|||
|
|
--*/
|
|||
|
|
|
|||
|
|
//
|
|||
|
|
// INCLUDES
|
|||
|
|
//
|
|||
|
|
#include <eventp.h>
|
|||
|
|
|
|||
|
|
//
|
|||
|
|
// GLOBALS
|
|||
|
|
//
|
|||
|
|
PVOID g_pElfHeap;
|
|||
|
|
|
|||
|
|
|
|||
|
|
VOID
|
|||
|
|
ElfpCreateHeap(
|
|||
|
|
VOID
|
|||
|
|
)
|
|||
|
|
{
|
|||
|
|
DWORD dwHeapFlags;
|
|||
|
|
|
|||
|
|
#if DBG
|
|||
|
|
|
|||
|
|
//
|
|||
|
|
// Turn on tail and free checking on debug builds.
|
|||
|
|
//
|
|||
|
|
dwHeapFlags = HEAP_GROWABLE
|
|||
|
|
| HEAP_FREE_CHECKING_ENABLED
|
|||
|
|
| HEAP_TAIL_CHECKING_ENABLED;
|
|||
|
|
|
|||
|
|
#else // ndef DBG
|
|||
|
|
|
|||
|
|
dwHeapFlags = HEAP_GROWABLE;
|
|||
|
|
|
|||
|
|
#endif // DBG
|
|||
|
|
|
|||
|
|
//
|
|||
|
|
// Create the heap
|
|||
|
|
//
|
|||
|
|
g_pElfHeap = RtlCreateHeap(dwHeapFlags, // Flags
|
|||
|
|
NULL, // HeapBase
|
|||
|
|
32 * 1024, // ReserveSize (32K)
|
|||
|
|
4096, // CommitSize (4K)
|
|||
|
|
NULL, // HeapLock
|
|||
|
|
NULL); // GrowthThreshhold
|
|||
|
|
|
|||
|
|
if (g_pElfHeap == NULL)
|
|||
|
|
{
|
|||
|
|
ELF_LOG0(ERROR,
|
|||
|
|
"ElfpCreateHeap: RtlCreateHeap failed -- using process heap\n");
|
|||
|
|
|
|||
|
|
g_pElfHeap = RtlProcessHeap();
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
return;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
|
|||
|
|
PVOID
|
|||
|
|
ElfpAllocateBuffer(
|
|||
|
|
ULONG Size
|
|||
|
|
)
|
|||
|
|
|
|||
|
|
/*++
|
|||
|
|
|
|||
|
|
Routine Description:
|
|||
|
|
|
|||
|
|
Allocate a buffer of the given size
|
|||
|
|
|
|||
|
|
|
|||
|
|
Arguments:
|
|||
|
|
|
|||
|
|
Number of bytes to allocate
|
|||
|
|
|
|||
|
|
Return Value:
|
|||
|
|
|
|||
|
|
Pointer to allocated buffer (or NULL).
|
|||
|
|
|
|||
|
|
--*/
|
|||
|
|
{
|
|||
|
|
return RtlAllocateHeap(g_pElfHeap, 0, Size);
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
BOOLEAN
|
|||
|
|
ElfpFreeBuffer(
|
|||
|
|
PVOID Address
|
|||
|
|
)
|
|||
|
|
|
|||
|
|
/*++
|
|||
|
|
|
|||
|
|
Routine Description:
|
|||
|
|
|
|||
|
|
Frees a buffer previously allocated by ElfpAllocateBuffer.
|
|||
|
|
|
|||
|
|
Arguments:
|
|||
|
|
|
|||
|
|
Pointer to buffer.
|
|||
|
|
|
|||
|
|
Return Value:
|
|||
|
|
|
|||
|
|
TRUE if the block was properly freed, FALSE if not
|
|||
|
|
|
|||
|
|
Note:
|
|||
|
|
|
|||
|
|
|
|||
|
|
--*/
|
|||
|
|
{
|
|||
|
|
//
|
|||
|
|
// Note that RtlFreeHeap handles NULL
|
|||
|
|
//
|
|||
|
|
return RtlFreeHeap(g_pElfHeap, 0, Address);
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
|
|||
|
|
PVOID
|
|||
|
|
MIDL_user_allocate (
|
|||
|
|
size_t Size
|
|||
|
|
)
|
|||
|
|
{
|
|||
|
|
//
|
|||
|
|
// The server-side RPC calls in the Eventlog expect any
|
|||
|
|
// UNICODE_STRINGs passed in either to have a length equal
|
|||
|
|
// to the max length or to be NULL-terminated. We need to
|
|||
|
|
// zero the memory here to supply that NULL-termination.
|
|||
|
|
//
|
|||
|
|
return RtlAllocateHeap(g_pElfHeap, HEAP_ZERO_MEMORY, Size);
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
|
|||
|
|
VOID
|
|||
|
|
MIDL_user_free (
|
|||
|
|
PVOID Address
|
|||
|
|
)
|
|||
|
|
{
|
|||
|
|
ElfpFreeBuffer(Address);
|
|||
|
|
}
|