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700 lines
18 KiB
C
700 lines
18 KiB
C
/*
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* basic interfaces
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*
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* Copyright 1997 Marcus Meissner
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include "config.h"
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#include <ctype.h>
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#include <stdarg.h>
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#include <stdlib.h>
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#include <string.h>
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#include <assert.h>
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#define COBJMACROS
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#include "windef.h"
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#include "winbase.h"
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#include "winuser.h"
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#include "ole2.h"
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#include "winerror.h"
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#include "wine/debug.h"
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WINE_DEFAULT_DEBUG_CHANNEL(olemalloc);
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/******************************************************************************
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* IMalloc32 implementation
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*
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* NOTES
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* For supporting CoRegisterMallocSpy the IMalloc implementation must know if
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* a given memory block was allocated with a spy active.
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*
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*****************************************************************************/
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/* set the vtable later */
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static IMallocVtbl VT_IMalloc32;
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typedef struct {
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IMallocVtbl *lpVtbl;
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DWORD dummy; /* nothing, we are static */
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IMallocSpy * pSpy; /* the spy when active */
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DWORD SpyedAllocationsLeft; /* number of spyed allocations left */
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BOOL SpyReleasePending; /* CoRevokeMallocSpy called with spyed allocations left*/
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LPVOID * SpyedBlocks; /* root of the table */
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int SpyedBlockTableLength; /* size of the table*/
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} _Malloc32;
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/* this is the static object instance */
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_Malloc32 Malloc32 = {&VT_IMalloc32, 0, NULL, 0, 0, NULL, 0};
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/* with a spy active all calls from pre to post methods are threadsave */
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static CRITICAL_SECTION IMalloc32_SpyCS;
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static CRITICAL_SECTION_DEBUG critsect_debug =
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{
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0, 0, &IMalloc32_SpyCS,
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{ &critsect_debug.ProcessLocksList, &critsect_debug.ProcessLocksList },
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0, 0, { 0, (DWORD)(__FILE__ ": IMalloc32_SpyCS") }
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};
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static CRITICAL_SECTION IMalloc32_SpyCS = { &critsect_debug, -1, 0, 0, 0, 0 };
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/* resize the old table */
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static int SetSpyedBlockTableLength ( int NewLength )
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{
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LPVOID *NewSpyedBlocks;
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if (!Malloc32.SpyedBlocks) NewSpyedBlocks = LocalAlloc(LMEM_ZEROINIT, NewLength * sizeof(PVOID));
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else NewSpyedBlocks = LocalReAlloc(Malloc32.SpyedBlocks, NewLength * sizeof(PVOID), LMEM_ZEROINIT);
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if (NewSpyedBlocks) {
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Malloc32.SpyedBlocks = NewSpyedBlocks;
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Malloc32.SpyedBlockTableLength = NewLength;
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}
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return NewSpyedBlocks != NULL;
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}
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/* add a location to the table */
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static int AddMemoryLocation(LPVOID * pMem)
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{
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LPVOID * Current;
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/* allocate the table if not already allocated */
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if (!Malloc32.SpyedBlockTableLength) {
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if (!SetSpyedBlockTableLength(0x1000)) return 0;
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}
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/* find a free location */
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Current = Malloc32.SpyedBlocks;
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while (*Current) {
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Current++;
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if (Current >= Malloc32.SpyedBlocks + Malloc32.SpyedBlockTableLength) {
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/* no more space in table, grow it */
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if (!SetSpyedBlockTableLength( Malloc32.SpyedBlockTableLength + 0x1000 )) return 0;
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}
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};
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/* put the location in our table */
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*Current = pMem;
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Malloc32.SpyedAllocationsLeft++;
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/*TRACE("%lu\n",Malloc32.SpyedAllocationsLeft);*/
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return 1;
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}
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static int RemoveMemoryLocation(LPVOID * pMem)
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{
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LPVOID * Current;
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/* allocate the table if not already allocated */
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if (!Malloc32.SpyedBlockTableLength) {
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if (!SetSpyedBlockTableLength(0x1000)) return 0;
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}
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Current = Malloc32.SpyedBlocks;
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/* find the location */
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while (*Current != pMem) {
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Current++;
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if (Current >= Malloc32.SpyedBlocks + Malloc32.SpyedBlockTableLength) return 0; /* not found */
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}
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/* location found */
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Malloc32.SpyedAllocationsLeft--;
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/*TRACE("%lu\n",Malloc32.SpyedAllocationsLeft);*/
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*Current = NULL;
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return 1;
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}
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/******************************************************************************
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* IMalloc32_QueryInterface [VTABLE]
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*/
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static HRESULT WINAPI IMalloc_fnQueryInterface(LPMALLOC iface,REFIID refiid,LPVOID *obj) {
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TRACE("(%s,%p)\n",debugstr_guid(refiid),obj);
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if (IsEqualIID(&IID_IUnknown,refiid) || IsEqualIID(&IID_IMalloc,refiid)) {
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*obj = (LPMALLOC)&Malloc32;
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return S_OK;
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}
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return E_NOINTERFACE;
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}
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/******************************************************************************
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* IMalloc32_AddRefRelease [VTABLE]
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*/
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static ULONG WINAPI IMalloc_fnAddRefRelease (LPMALLOC iface) {
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return 1;
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}
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/******************************************************************************
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* IMalloc32_Alloc [VTABLE]
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*/
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static LPVOID WINAPI IMalloc_fnAlloc(LPMALLOC iface, DWORD cb) {
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LPVOID addr;
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TRACE("(%ld)\n",cb);
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if(Malloc32.pSpy) {
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DWORD preAllocResult;
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EnterCriticalSection(&IMalloc32_SpyCS);
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preAllocResult = IMallocSpy_PreAlloc(Malloc32.pSpy, cb);
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if ((cb != 0) && (preAllocResult == 0)) {
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/* PreAlloc can force Alloc to fail, but not if cb == 0 */
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TRACE("returning null\n");
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LeaveCriticalSection(&IMalloc32_SpyCS);
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return NULL;
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}
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}
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addr = HeapAlloc(GetProcessHeap(),0,cb);
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if(Malloc32.pSpy) {
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addr = IMallocSpy_PostAlloc(Malloc32.pSpy, addr);
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if (addr) AddMemoryLocation(addr);
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LeaveCriticalSection(&IMalloc32_SpyCS);
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}
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TRACE("--(%p)\n",addr);
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return addr;
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}
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/******************************************************************************
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* IMalloc32_Realloc [VTABLE]
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*/
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static LPVOID WINAPI IMalloc_fnRealloc(LPMALLOC iface,LPVOID pv,DWORD cb) {
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LPVOID pNewMemory;
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TRACE("(%p,%ld)\n",pv,cb);
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if(Malloc32.pSpy) {
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LPVOID pRealMemory;
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BOOL fSpyed;
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EnterCriticalSection(&IMalloc32_SpyCS);
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fSpyed = RemoveMemoryLocation(pv);
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cb = IMallocSpy_PreRealloc(Malloc32.pSpy, pv, cb, &pRealMemory, fSpyed);
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/* check if can release the spy */
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if(Malloc32.SpyReleasePending && !Malloc32.SpyedAllocationsLeft) {
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IMallocSpy_Release(Malloc32.pSpy);
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Malloc32.SpyReleasePending = FALSE;
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Malloc32.pSpy = NULL;
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}
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if (0==cb) {
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/* PreRealloc can force Realloc to fail */
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LeaveCriticalSection(&IMalloc32_SpyCS);
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return NULL;
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}
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pv = pRealMemory;
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}
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if (!pv) pNewMemory = HeapAlloc(GetProcessHeap(),0,cb);
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else if (cb) pNewMemory = HeapReAlloc(GetProcessHeap(),0,pv,cb);
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else {
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HeapFree(GetProcessHeap(),0,pv);
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pNewMemory = NULL;
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}
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if(Malloc32.pSpy) {
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pNewMemory = IMallocSpy_PostRealloc(Malloc32.pSpy, pNewMemory, TRUE);
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if (pNewMemory) AddMemoryLocation(pNewMemory);
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LeaveCriticalSection(&IMalloc32_SpyCS);
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}
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TRACE("--(%p)\n",pNewMemory);
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return pNewMemory;
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}
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/******************************************************************************
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* IMalloc32_Free [VTABLE]
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*/
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static VOID WINAPI IMalloc_fnFree(LPMALLOC iface,LPVOID pv) {
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BOOL fSpyed = 0;
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TRACE("(%p)\n",pv);
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if(Malloc32.pSpy) {
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EnterCriticalSection(&IMalloc32_SpyCS);
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fSpyed = RemoveMemoryLocation(pv);
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pv = IMallocSpy_PreFree(Malloc32.pSpy, pv, fSpyed);
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}
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HeapFree(GetProcessHeap(),0,pv);
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if(Malloc32.pSpy) {
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IMallocSpy_PostFree(Malloc32.pSpy, fSpyed);
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/* check if can release the spy */
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if(Malloc32.SpyReleasePending && !Malloc32.SpyedAllocationsLeft) {
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IMallocSpy_Release(Malloc32.pSpy);
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Malloc32.SpyReleasePending = FALSE;
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Malloc32.pSpy = NULL;
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}
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LeaveCriticalSection(&IMalloc32_SpyCS);
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}
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}
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/******************************************************************************
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* IMalloc32_GetSize [VTABLE]
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*
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* NOTES
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* FIXME returns:
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* win95: size allocated (4 byte boundarys)
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* win2k: size originally requested !!! (allocated on 8 byte boundarys)
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*/
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static DWORD WINAPI IMalloc_fnGetSize(LPMALLOC iface,LPVOID pv) {
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DWORD cb;
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BOOL fSpyed = 0;
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TRACE("(%p)\n",pv);
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if(Malloc32.pSpy) {
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EnterCriticalSection(&IMalloc32_SpyCS);
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pv = IMallocSpy_PreGetSize(Malloc32.pSpy, pv, fSpyed);
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}
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cb = HeapSize(GetProcessHeap(),0,pv);
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if(Malloc32.pSpy) {
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cb = IMallocSpy_PostGetSize(Malloc32.pSpy, cb, fSpyed);
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LeaveCriticalSection(&IMalloc32_SpyCS);
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}
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return cb;
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}
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/******************************************************************************
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* IMalloc32_DidAlloc [VTABLE]
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*/
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static INT WINAPI IMalloc_fnDidAlloc(LPMALLOC iface,LPVOID pv) {
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BOOL fSpyed = 0;
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int didAlloc;
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TRACE("(%p)\n",pv);
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if(Malloc32.pSpy) {
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EnterCriticalSection(&IMalloc32_SpyCS);
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pv = IMallocSpy_PreDidAlloc(Malloc32.pSpy, pv, fSpyed);
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}
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didAlloc = -1;
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if(Malloc32.pSpy) {
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didAlloc = IMallocSpy_PostDidAlloc(Malloc32.pSpy, pv, fSpyed, didAlloc);
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LeaveCriticalSection(&IMalloc32_SpyCS);
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}
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return didAlloc;
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}
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/******************************************************************************
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* IMalloc32_HeapMinimize [VTABLE]
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*/
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static VOID WINAPI IMalloc_fnHeapMinimize(LPMALLOC iface) {
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TRACE("()\n");
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if(Malloc32.pSpy) {
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EnterCriticalSection(&IMalloc32_SpyCS);
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IMallocSpy_PreHeapMinimize(Malloc32.pSpy);
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}
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if(Malloc32.pSpy) {
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IMallocSpy_PostHeapMinimize(Malloc32.pSpy);
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LeaveCriticalSection(&IMalloc32_SpyCS);
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}
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}
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static IMallocVtbl VT_IMalloc32 =
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{
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IMalloc_fnQueryInterface,
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IMalloc_fnAddRefRelease,
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IMalloc_fnAddRefRelease,
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IMalloc_fnAlloc,
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IMalloc_fnRealloc,
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IMalloc_fnFree,
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IMalloc_fnGetSize,
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IMalloc_fnDidAlloc,
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IMalloc_fnHeapMinimize
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};
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/******************************************************************************
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* IMallocSpy implementation
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*****************************************************************************/
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/* set the vtable later */
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static IMallocSpyVtbl VT_IMallocSpy;
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typedef struct {
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IMallocSpyVtbl *lpVtbl;
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DWORD ref;
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} _MallocSpy;
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/* this is the static object instance */
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_MallocSpy MallocSpy = {&VT_IMallocSpy, 0};
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/******************************************************************************
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* IMalloc32_QueryInterface [VTABLE]
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*/
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static HRESULT WINAPI IMallocSpy_fnQueryInterface(LPMALLOCSPY iface,REFIID refiid,LPVOID *obj)
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{
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TRACE("(%s,%p)\n",debugstr_guid(refiid),obj);
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if (IsEqualIID(&IID_IUnknown,refiid) || IsEqualIID(&IID_IMallocSpy,refiid)) {
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*obj = (LPMALLOC)&MallocSpy;
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return S_OK;
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}
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return E_NOINTERFACE;
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}
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/******************************************************************************
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* IMalloc32_AddRef [VTABLE]
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*/
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static ULONG WINAPI IMallocSpy_fnAddRef (LPMALLOCSPY iface)
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{
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_MallocSpy *This = (_MallocSpy *)iface;
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ULONG ref = InterlockedIncrement(&This->ref);
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TRACE ("(%p)->(count=%lu)\n", This, ref - 1);
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return ref;
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}
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/******************************************************************************
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* IMalloc32_AddRelease [VTABLE]
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*
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* NOTES
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* Our MallocSpy is static. If the count reaches 0 we dump the leaks
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*/
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static ULONG WINAPI IMallocSpy_fnRelease (LPMALLOCSPY iface)
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{
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_MallocSpy *This = (_MallocSpy *)iface;
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ULONG ref = InterlockedDecrement(&This->ref);
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TRACE ("(%p)->(count=%lu)\n", This, ref + 1);
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if (!ref) {
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/* our allocation list MUST be empty here */
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}
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return ref;
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}
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static ULONG WINAPI IMallocSpy_fnPreAlloc(LPMALLOCSPY iface, ULONG cbRequest)
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{
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_MallocSpy *This = (_MallocSpy *)iface;
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TRACE ("(%p)->(%lu)\n", This, cbRequest);
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return cbRequest;
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}
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static PVOID WINAPI IMallocSpy_fnPostAlloc(LPMALLOCSPY iface, void* pActual)
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{
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_MallocSpy *This = (_MallocSpy *)iface;
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TRACE ("(%p)->(%p)\n", This, pActual);
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return pActual;
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}
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static PVOID WINAPI IMallocSpy_fnPreFree(LPMALLOCSPY iface, void* pRequest, BOOL fSpyed)
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{
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_MallocSpy *This = (_MallocSpy *)iface;
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TRACE ("(%p)->(%p %u)\n", This, pRequest, fSpyed);
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return pRequest;
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}
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static void WINAPI IMallocSpy_fnPostFree(LPMALLOCSPY iface, BOOL fSpyed)
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{
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_MallocSpy *This = (_MallocSpy *)iface;
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TRACE ("(%p)->(%u)\n", This, fSpyed);
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}
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static ULONG WINAPI IMallocSpy_fnPreRealloc(LPMALLOCSPY iface, void* pRequest, ULONG cbRequest, void** ppNewRequest, BOOL fSpyed)
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{
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_MallocSpy *This = (_MallocSpy *)iface;
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TRACE ("(%p)->(%p %lu %u)\n", This, pRequest, cbRequest, fSpyed);
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*ppNewRequest = pRequest;
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return cbRequest;
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}
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static PVOID WINAPI IMallocSpy_fnPostRealloc(LPMALLOCSPY iface, void* pActual, BOOL fSpyed)
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{
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_MallocSpy *This = (_MallocSpy *)iface;
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TRACE ("(%p)->(%p %u)\n", This, pActual, fSpyed);
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return pActual;
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}
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static PVOID WINAPI IMallocSpy_fnPreGetSize(LPMALLOCSPY iface, void* pRequest, BOOL fSpyed)
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{
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_MallocSpy *This = (_MallocSpy *)iface;
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TRACE ("(%p)->(%p %u)\n", This, pRequest, fSpyed);
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return pRequest;
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}
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static ULONG WINAPI IMallocSpy_fnPostGetSize(LPMALLOCSPY iface, ULONG cbActual, BOOL fSpyed)
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{
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_MallocSpy *This = (_MallocSpy *)iface;
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TRACE ("(%p)->(%lu %u)\n", This, cbActual, fSpyed);
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return cbActual;
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}
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static PVOID WINAPI IMallocSpy_fnPreDidAlloc(LPMALLOCSPY iface, void* pRequest, BOOL fSpyed)
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{
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_MallocSpy *This = (_MallocSpy *)iface;
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TRACE ("(%p)->(%p %u)\n", This, pRequest, fSpyed);
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return pRequest;
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}
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static int WINAPI IMallocSpy_fnPostDidAlloc(LPMALLOCSPY iface, void* pRequest, BOOL fSpyed, int fActual)
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{
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_MallocSpy *This = (_MallocSpy *)iface;
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TRACE ("(%p)->(%p %u %u)\n", This, pRequest, fSpyed, fActual);
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return fActual;
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}
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static void WINAPI IMallocSpy_fnPreHeapMinimize(LPMALLOCSPY iface)
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{
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_MallocSpy *This = (_MallocSpy *)iface;
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TRACE ("(%p)->()\n", This);
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}
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static void WINAPI IMallocSpy_fnPostHeapMinimize(LPMALLOCSPY iface)
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{
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_MallocSpy *This = (_MallocSpy *)iface;
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TRACE ("(%p)->()\n", This);
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}
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static void MallocSpyDumpLeaks() {
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TRACE("leaks: %lu\n", Malloc32.SpyedAllocationsLeft);
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}
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static IMallocSpyVtbl VT_IMallocSpy =
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{
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IMallocSpy_fnQueryInterface,
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IMallocSpy_fnAddRef,
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IMallocSpy_fnRelease,
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IMallocSpy_fnPreAlloc,
|
|
IMallocSpy_fnPostAlloc,
|
|
IMallocSpy_fnPreFree,
|
|
IMallocSpy_fnPostFree,
|
|
IMallocSpy_fnPreRealloc,
|
|
IMallocSpy_fnPostRealloc,
|
|
IMallocSpy_fnPreGetSize,
|
|
IMallocSpy_fnPostGetSize,
|
|
IMallocSpy_fnPreDidAlloc,
|
|
IMallocSpy_fnPostDidAlloc,
|
|
IMallocSpy_fnPreHeapMinimize,
|
|
IMallocSpy_fnPostHeapMinimize
|
|
};
|
|
|
|
/******************************************************************************
|
|
* CoGetMalloc [OLE32.@]
|
|
*
|
|
* Retrieves the current IMalloc interface for the process.
|
|
*
|
|
* PARAMS
|
|
* dwMemContext [I]
|
|
* lpMalloc [O] Address where memory allocator object will be stored.
|
|
*
|
|
* RETURNS
|
|
* Success: S_OK.
|
|
* Failure: HRESULT code.
|
|
*/
|
|
HRESULT WINAPI CoGetMalloc(DWORD dwMemContext, LPMALLOC *lpMalloc)
|
|
{
|
|
*lpMalloc = (LPMALLOC)&Malloc32;
|
|
return S_OK;
|
|
}
|
|
|
|
/***********************************************************************
|
|
* CoTaskMemAlloc [OLE32.@]
|
|
*
|
|
* Allocates memory using the current process memory allocator.
|
|
*
|
|
* PARAMS
|
|
* size [I] Size of the memory block to allocate.
|
|
*
|
|
* RETURNS
|
|
* Success: Pointer to newly allocated memory block.
|
|
* Failure: NULL.
|
|
*/
|
|
LPVOID WINAPI CoTaskMemAlloc(ULONG size)
|
|
{
|
|
return IMalloc_Alloc((LPMALLOC)&Malloc32,size);
|
|
}
|
|
|
|
/***********************************************************************
|
|
* CoTaskMemFree [OLE32.@]
|
|
*
|
|
* Frees memory allocated from the current process memory allocator.
|
|
*
|
|
* PARAMS
|
|
* ptr [I] Memory block to free.
|
|
*
|
|
* RETURNS
|
|
* Nothing.
|
|
*/
|
|
VOID WINAPI CoTaskMemFree(LPVOID ptr)
|
|
{
|
|
IMalloc_Free((LPMALLOC)&Malloc32, ptr);
|
|
}
|
|
|
|
/***********************************************************************
|
|
* CoTaskMemRealloc [OLE32.@]
|
|
*
|
|
* Allocates memory using the current process memory allocator.
|
|
*
|
|
* PARAMS
|
|
* pvOld [I] Pointer to old memory block.
|
|
* size [I] Size of the new memory block.
|
|
*
|
|
* RETURNS
|
|
* Success: Pointer to newly allocated memory block.
|
|
* Failure: NULL.
|
|
*/
|
|
LPVOID WINAPI CoTaskMemRealloc(LPVOID pvOld, ULONG size)
|
|
{
|
|
return IMalloc_Realloc((LPMALLOC)&Malloc32, pvOld, size);
|
|
}
|
|
|
|
/***********************************************************************
|
|
* CoRegisterMallocSpy [OLE32.@]
|
|
*
|
|
* Registers an object that receives notifications on memory allocations and
|
|
* frees.
|
|
*
|
|
* PARAMS
|
|
* pMallocSpy [I] New spy object.
|
|
*
|
|
* RETURNS
|
|
* Success: S_OK.
|
|
* Failure: HRESULT code.
|
|
*
|
|
* NOTES
|
|
* if a mallocspy is already registered, we can't do it again since
|
|
* only the spy knows, how to free a memory block
|
|
*/
|
|
HRESULT WINAPI CoRegisterMallocSpy(LPMALLOCSPY pMallocSpy)
|
|
{
|
|
IMallocSpy* pSpy;
|
|
HRESULT hres = E_INVALIDARG;
|
|
|
|
TRACE("\n");
|
|
|
|
/* HACK TO ACTIVATE OUT SPY */
|
|
if (pMallocSpy == (LPVOID)-1) pMallocSpy =(IMallocSpy*)&MallocSpy;
|
|
|
|
if(Malloc32.pSpy) return CO_E_OBJISREG;
|
|
|
|
EnterCriticalSection(&IMalloc32_SpyCS);
|
|
|
|
if (SUCCEEDED(IUnknown_QueryInterface(pMallocSpy, &IID_IMallocSpy, (LPVOID*)&pSpy))) {
|
|
Malloc32.pSpy = pSpy;
|
|
hres = S_OK;
|
|
}
|
|
|
|
LeaveCriticalSection(&IMalloc32_SpyCS);
|
|
|
|
return hres;
|
|
}
|
|
|
|
/***********************************************************************
|
|
* CoRevokeMallocSpy [OLE32.@]
|
|
*
|
|
* Revokes a previousl registered object that receives notifications on memory
|
|
* allocations and frees.
|
|
*
|
|
* PARAMS
|
|
* pMallocSpy [I] New spy object.
|
|
*
|
|
* RETURNS
|
|
* Success: S_OK.
|
|
* Failure: HRESULT code.
|
|
*
|
|
* NOTES
|
|
* we can't revoke a malloc spy as long as memory blocks allocated with
|
|
* the spy are active since only the spy knows how to free them
|
|
*/
|
|
HRESULT WINAPI CoRevokeMallocSpy(void)
|
|
{
|
|
HRESULT hres = S_OK;
|
|
TRACE("\n");
|
|
|
|
EnterCriticalSection(&IMalloc32_SpyCS);
|
|
|
|
/* if it's our spy it's time to dump the leaks */
|
|
if (Malloc32.pSpy == (IMallocSpy*)&MallocSpy) {
|
|
MallocSpyDumpLeaks();
|
|
}
|
|
|
|
if (Malloc32.SpyedAllocationsLeft) {
|
|
TRACE("SpyReleasePending with %lu allocations left\n", Malloc32.SpyedAllocationsLeft);
|
|
Malloc32.SpyReleasePending = TRUE;
|
|
hres = E_ACCESSDENIED;
|
|
} else {
|
|
IMallocSpy_Release(Malloc32.pSpy);
|
|
Malloc32.pSpy = NULL;
|
|
}
|
|
LeaveCriticalSection(&IMalloc32_SpyCS);
|
|
|
|
return S_OK;
|
|
}
|
|
|
|
/******************************************************************************
|
|
* IsValidInterface [OLE32.@]
|
|
*
|
|
* Determines whether a pointer is a valid interface.
|
|
*
|
|
* PARAMS
|
|
* punk [I] Interface to be tested.
|
|
*
|
|
* RETURNS
|
|
* TRUE, if the passed pointer is a valid interface, or FALSE otherwise.
|
|
*/
|
|
BOOL WINAPI IsValidInterface(LPUNKNOWN punk)
|
|
{
|
|
return !(
|
|
IsBadReadPtr(punk,4) ||
|
|
IsBadReadPtr(punk->lpVtbl,4) ||
|
|
IsBadReadPtr(punk->lpVtbl->QueryInterface,9) ||
|
|
IsBadCodePtr((FARPROC)punk->lpVtbl->QueryInterface)
|
|
);
|
|
}
|