122 lines
3 KiB
C
122 lines
3 KiB
C
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/*++
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Copyright (c) 1998 Microsoft Corporation
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All rights reserved.
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Module:
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xmemwrpr.h
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Abstract:
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Wrapper of exchmem.
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User of this wrapper: you should create the heap using
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ExchMHeapCreate before allocating any memory from EXCHMEM.
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You should destroy the heap using ExchMHeapDestroy.
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For raw memory allocation from heap, you should use PvAlloc,
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PvRealloc and FreePv functions.
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For object creation, unless you overload new yourself in
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the class defintion, using "new" will go to EXCHMEM, using
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"XNEW" will go to EXCHMEM while at the same time catch the
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file and line information for that allocation ( this is
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for debug version only )
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Authors:
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KangYan Kangrong Yan Sept. 29, 1998
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History:
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09/29/98 KangYan Created
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--*/
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#if !defined(_XMEMWRPR_H_)
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#define _XMEMWRPR_H_
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#include <exchmem.h>
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#include <dbgtrace.h>
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//
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// Define number of exchmem heaps if not already defined
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//
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#if !defined(NUM_EXCHMEM_HEAPS)
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#define NUM_EXCHMEM_HEAPS 0
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#endif
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//
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// Macros for major heap allocation functions. ( We follow
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// exchange store's convention here )
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//
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#if defined( DEBUG )
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#define PvAlloc(_cb) ExchMHeapAllocDebug(_cb, __FILE__, __LINE__)
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#define PvRealloc(_pv, _cb) ExchMHeapReAllocDebug(_pv, _cb, __FILE__, __LINE__)
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#define FreePv(_pv) ExchMHeapFree(_pv)
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#else
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#define PvAlloc(_cb) ExchMHeapAlloc(_cb)
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#define PvRealloc(_pv, _cb) ExchMHeapReAlloc(_pv, _cb)
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#define FreePv(_pv) ExchMHeapFree(_pv)
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#endif
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//
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// Operator XNEW, XDELETE are defined to replace "new" where xchmem wants to
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// be used so that we can pass in file name and line number of each allocation
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// to make catching leaks much easier in debug builds. In rtl builds,
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// the file name or line number will not be passed in
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//
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#if defined( DEBUG )
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#define XNEW new(__FILE__,__LINE__)
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#else
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#define XNEW new
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#endif
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#define XDELETE delete
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//
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// Overload global new operators
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//
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__inline void * __cdecl operator new(size_t size, char *szFile, unsigned int uiLine )
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{
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void *p = ExchMHeapAllocDebug( size, szFile, uiLine );
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SetLastError( p? NO_ERROR : ERROR_NOT_ENOUGH_MEMORY );
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return p;
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}
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__inline void * __cdecl operator new( size_t size )
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{
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void *p = ExchMHeapAlloc( size );
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SetLastError( p? NO_ERROR : ERROR_NOT_ENOUGH_MEMORY );
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return p;
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}
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//
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// Overload global delete operator, one version only
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//
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__inline void __cdecl operator delete( void *pv )
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{
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ExchMHeapFree( pv );
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SetLastError( NO_ERROR );
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}
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//
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// Create creation wrappers
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//
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__inline BOOL CreateGlobalHeap( DWORD cHeaps, DWORD dwFlag, DWORD dwInit, DWORD dwMax ) {
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if ( ExchMHeapCreate( cHeaps, dwFlag, dwInit, dwMax ) ) {
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SetLastError( NO_ERROR );
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return TRUE;
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} else {
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_ASSERT( 0 );
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return FALSE;
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}
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}
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__inline BOOL DestroyGlobalHeap() {
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if ( ExchMHeapDestroy() ) {
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return TRUE;
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} else {
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_ASSERT( 0 );
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return FALSE;
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}
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}
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#endif
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