139 lines
2.3 KiB
C
139 lines
2.3 KiB
C
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/*++
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Copyright (c) 1999 Microsoft Corporation
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All rights reserved.
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Module Name:
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srvrmem.c
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Abstract:
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Memory Allocation Routines for spoolsv.exe.
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Author:
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Khaled Sedky (khaleds) 13-Jan-1999
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Revision History:
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--*/
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#include <nt.h>
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#include <ntrtl.h>
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#include <nturtl.h>
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#include <ntddrdr.h>
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#include <stdio.h>
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#include <windows.h>
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#include <winspool.h>
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#include "server.h"
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#include "client.h"
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#ifndef _SRVRMEM_H_
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#include "srvrmem.h"
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#endif
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LPVOID
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SrvrAllocSplMem(
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DWORD cb
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)
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/*++
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Routine Description:
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This function will allocate local memory. It will possibly allocate extra
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memory and fill this with debugging information for the debugging version.
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Arguments:
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cb - The amount of memory to allocate
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Return Value:
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NON-NULL - A pointer to the allocated memory
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FALSE/NULL - The operation failed. Extended error status is available
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using GetLastError.
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--*/
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{
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LPDWORD pMem;
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DWORD cbNew;
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cb = DWORD_ALIGN_UP(cb);
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cbNew = cb+sizeof(DWORD_PTR)+sizeof(DWORD);
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pMem=(LPDWORD)LocalAlloc(LPTR, cbNew);
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if (!pMem) {
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DBGMSG( DBG_WARNING, ("Memory Allocation failed for %d bytes\n", cbNew ));
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return 0;
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}
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*pMem=cb;
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*(LPDWORD)((LPBYTE)pMem+cbNew-sizeof(DWORD))=0xdeadbeef;
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return (LPVOID)(pMem+sizeof(DWORD_PTR)/sizeof(DWORD));
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}
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BOOL
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SrvrFreeSplMem(
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LPVOID pMem
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)
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{
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DWORD cbNew;
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LPDWORD pNewMem;
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if( !pMem ){
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return TRUE;
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}
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pNewMem = pMem;
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pNewMem -= sizeof(DWORD_PTR) / sizeof(DWORD);
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cbNew = *pNewMem;
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if (*(LPDWORD)((LPBYTE)pMem + cbNew) != 0xdeadbeef) {
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DBGMSG(DBG_ERROR, ("DllFreeSplMem Corrupt Memory in winspool : %0lx\n", pNewMem));
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return FALSE;
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}
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memset(pNewMem, 0x65, cbNew);
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LocalFree((LPVOID)pNewMem);
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return TRUE;
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}
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LPVOID
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SrvrReallocSplMem(
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LPVOID pOldMem,
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DWORD cbOld,
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DWORD cbNew
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)
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{
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LPVOID pNewMem;
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pNewMem=SrvrAllocSplMem(cbNew);
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if (!pNewMem)
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{
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DBGMSG( DBG_WARNING, ("Memory ReAllocation failed for %d bytes\n", cbNew ));
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}
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else
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{
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if (pOldMem)
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{
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if (cbOld)
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{
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memcpy(pNewMem, pOldMem, min(cbNew, cbOld));
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}
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SrvrFreeSplMem(pOldMem);
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}
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}
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return pNewMem;
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}
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