You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
237 lines
6.3 KiB
237 lines
6.3 KiB
//-----------------------------------------------------------------------------
|
|
//
|
|
// File: TRANSMEM.H
|
|
//
|
|
// Copyright Microsoft Corporation 1997, All Rights Reserved.
|
|
//
|
|
// Owner: NIKOS
|
|
//
|
|
// Description: This file contains memory routines and macros for using
|
|
// EXCHMEM as a dynamic memory allocator. If your object can
|
|
// be made fixed in size, it may be more appropriate to use
|
|
// CPool especially if your object is allocated/freed often.
|
|
//
|
|
// Note: CPool never releases (frees) objects, so some sort of
|
|
// free such objects may also be needed.
|
|
//
|
|
// Modified 2/98 by mikeswa - Added Multi-heap support
|
|
//-----------------------------------------------------------------------------
|
|
|
|
#ifndef __TRANSMEM_H__
|
|
#define __TRANSMEM_H__
|
|
|
|
#include <exchmem.h>
|
|
#include <cpool.h>
|
|
|
|
#define HEAP_LOW_MEMORY_RESERVE 65536 // to be freed when we're low on memory
|
|
|
|
//define number of exchmem heaps if not already defined
|
|
#ifndef NUM_EXCHMEM_HEAPS
|
|
#define NUM_EXCHMEM_HEAPS 0
|
|
#endif //NUM_EXCHMEM_HEAPS
|
|
|
|
|
|
//
|
|
// These three globals:
|
|
//
|
|
// HANDLE g_hTransHeap = NULL;
|
|
//
|
|
// must be declared somewhere in a C file so things will link properly. The macros
|
|
// declared use these to store heap handles, etc. to make things work.
|
|
//
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
extern HANDLE g_hTransHeap;
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
//
|
|
// TrHeapCreate needs to be called once at startup time to initialize Exchmem and create
|
|
// the heap.
|
|
//
|
|
#ifdef __cplusplus
|
|
__inline BOOL TrHeapCreate(DWORD dwFlags=0, DWORD dwInitialSize=1024000, DWORD dwMaxSize=0)
|
|
#else
|
|
__inline BOOL TrHeapCreate(DWORD dwFlags, DWORD dwInitialSize, DWORD dwMaxSize)
|
|
#endif
|
|
{
|
|
if (g_hTransHeap)
|
|
return FALSE;
|
|
|
|
g_hTransHeap = ExchMHeapCreate(NUM_EXCHMEM_HEAPS, dwFlags, dwInitialSize, dwMaxSize);
|
|
|
|
if (g_hTransHeap)
|
|
return TRUE;
|
|
else
|
|
return FALSE;
|
|
}
|
|
|
|
//
|
|
// TrHeapDestroy() needs to be called once at shutdown time to free the heap and it's contents.
|
|
//
|
|
// Note: Because the heap is destroyed before the module is finished unloading, all objects that
|
|
// allocated memory must be destroyed (with delete) before the module is unloaded. If not
|
|
// done, nasty crashes will result. This is a BAD thing to do:
|
|
//
|
|
// CObject g_Object;
|
|
//
|
|
// CObject::~CObject()
|
|
// {
|
|
// if (NULL != m_pBuffer)
|
|
// {
|
|
// TrFree(m_pBuffer);
|
|
// m_pBuffer = NULL;
|
|
// }
|
|
// }
|
|
//
|
|
// since ~CObject() will be called AFTER TrHeapDestroy, and TrFree will be called on a (destroyed) heap.
|
|
//
|
|
__inline BOOL TrHeapDestroy(void)
|
|
{
|
|
BOOL b = TRUE;
|
|
|
|
if (g_hTransHeap)
|
|
{
|
|
b = ExchMHeapDestroy();
|
|
g_hTransHeap = NULL;
|
|
}
|
|
|
|
return b;
|
|
}
|
|
|
|
//
|
|
// TrCalloc: replacement for calloc()
|
|
//
|
|
__inline void * TrCalloc(unsigned int x, unsigned int y, char * szFile = __FILE__, unsigned int uiLine = __LINE__)
|
|
{
|
|
return g_hTransHeap ? ExchMHeapAllocDebug(x*y, szFile, uiLine) : NULL;
|
|
}
|
|
|
|
|
|
//
|
|
// TrFree: replacement for free()
|
|
__inline void TrFree(void *pv)
|
|
{
|
|
if (g_hTransHeap)
|
|
{
|
|
ExchMHeapFree(pv);
|
|
}
|
|
else
|
|
{
|
|
// Our allocs / frees are out of sync.
|
|
#ifdef DEBUG
|
|
DebugBreak();
|
|
#endif
|
|
}
|
|
}
|
|
|
|
// TrMalloc: replacement for malloc()
|
|
__inline void * TrMalloc(unsigned int size, char * szFile = __FILE__, unsigned int uiLine = __LINE__)
|
|
{
|
|
return g_hTransHeap ? ExchMHeapAllocDebug(size, szFile, uiLine) : NULL;
|
|
}
|
|
|
|
// TrRealloc: replacement for realloc()
|
|
__inline void * TrRealloc(void *pv, unsigned int size, char * szFile = __FILE__, unsigned int uiLine = __LINE__)
|
|
{
|
|
return g_hTransHeap ? ExchMHeapReAllocDebug(pv, size, szFile, uiLine) : NULL;
|
|
}
|
|
|
|
#ifdef __cplusplus
|
|
#define TransCONST const
|
|
#else
|
|
#define TransCONST
|
|
#endif
|
|
|
|
// TrStrdupW: replacement for wcsdup()
|
|
__inline LPWSTR TrStrdupW(TransCONST LPWSTR pwszString)
|
|
{
|
|
LPWSTR pwszTmp = NULL;
|
|
|
|
if (NULL == g_hTransHeap || NULL == pwszString)
|
|
return NULL;
|
|
|
|
pwszTmp = (LPWSTR) ExchMHeapAlloc((wcslen(pwszString) + 1) * sizeof(WCHAR));
|
|
if (NULL != pwszTmp)
|
|
wcscpy(pwszTmp,pwszString);
|
|
|
|
return pwszTmp;
|
|
}
|
|
|
|
// TrStrdupA: replacement for strdup()
|
|
__inline LPSTR TrStrdupA(TransCONST LPSTR pszString)
|
|
{
|
|
LPSTR pszTmp = NULL;
|
|
|
|
if (NULL == g_hTransHeap || NULL == pszString)
|
|
return NULL;
|
|
|
|
pszTmp = (LPSTR) ExchMHeapAlloc((strlen(pszString) + 1) * sizeof(CHAR));
|
|
if (NULL != pszTmp)
|
|
strcpy(pszTmp,pszString);
|
|
|
|
return pszTmp;
|
|
}
|
|
|
|
|
|
#ifdef _UNICODE
|
|
#define TrStrdup(x) TrStrdupW(x)
|
|
#else
|
|
#define TrStrdup(x) TrStrdupA(x)
|
|
#endif
|
|
|
|
//
|
|
// Please use the pv* macros... defined here allocators may change over time and this will
|
|
// make it easy to change when needed.
|
|
//
|
|
#define pvMalloc(x) TrMalloc(x, __FILE__, __LINE__)
|
|
#define FreePv(x) TrFree(x)
|
|
#define pvCalloc(x,y) TrCalloc(x,y, __FILE__, __LINE__)
|
|
#define pszStrdup(x) TrStrdup(x)
|
|
#define pvRealloc(pv,size) TrRealloc(pv, size, __FILE__, __LINE__)
|
|
|
|
#ifdef __cplusplus
|
|
// Replacement for the default new() operator
|
|
__inline void * __cdecl operator new(size_t stAllocateBlock)
|
|
{
|
|
return TrMalloc( stAllocateBlock );
|
|
}
|
|
|
|
// Replacement for the default new() operator that allows
|
|
//specification of file and line #
|
|
// To use this allocator as your default allocator, simply use the following:
|
|
//#define new TRANSMEM_NEW
|
|
//NOTE: You must be careful when you redefine this macro... it may cause
|
|
//problems with overloaded new operators (a la CPOOL or STL).
|
|
#define TRANSMEM_NEW new(__FILE__, __LINE)
|
|
__inline void * __cdecl operator new(size_t stAllocateBlock, char * szFile, unsigned int uiLine)
|
|
{
|
|
return TrMalloc( stAllocateBlock, szFile, uiLine );
|
|
}
|
|
// Replacement for the default delete() operator
|
|
__inline void __cdecl operator delete( void *pvMem )
|
|
{
|
|
FreePv( pvMem );
|
|
}
|
|
|
|
#endif
|
|
|
|
// Convenient macro to set the pointer you freed to NULL as well
|
|
#define TRFREE(x) \
|
|
if (NULL != x) \
|
|
{ \
|
|
FreePv(x); \
|
|
x = NULL; \
|
|
}
|
|
|
|
// Convenient macro to set the pointer to the object to NULL as well
|
|
#define TRDELETE(x) \
|
|
if (NULL != x) \
|
|
{ \
|
|
delete x; \
|
|
x = NULL; \
|
|
}
|
|
|
|
#endif /* __TRANSMEM_H__ */
|