dll/win32/mapi32/imalloc.c

   1 /*
   2  * MAPI Default IMalloc implementation
   3  *
   4  * Copyright 2004 Jon Griffiths
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  19  */
  20
  21 #define WIN32_NO_STATUS
  22 #define _INC_WINDOWS
  23 #define COM_NO_WINDOWS_H
  24
  25 #include <stdarg.h>
  26
  27 #define COBJMACROS
  28 #define NONAMELESSUNION
  29 #define NONAMELESSSTRUCT
  30 #include <windef.h>
  31 #include <winbase.h>
  32 //#include "winreg.h"
  33 //#include "winuser.h"
  34 //#include "winerror.h"
  35 //#include "winternl.h"
  36 //#include "objbase.h"
  37 //#include "shlwapi.h"
  38 #include <mapiutil.h>
  39 #include "util.h"
  40 #include <wine/debug.h>
  41
  42 WINE_DEFAULT_DEBUG_CHANNEL(mapi);
  43
  44 static const IMallocVtbl MAPI_IMalloc_vt;
  45
  46 typedef struct
  47 {
  48   const IMallocVtbl *lpVtbl;
  49   LONG lRef;
  50 } MAPI_IMALLOC;
  51
  52 static MAPI_IMALLOC MAPI_IMalloc = { &MAPI_IMalloc_vt, 0u };
  53
  54 extern LONG MAPI_ObjectCount; /* In mapi32_main.c */
  55
  56 /*************************************************************************
  57  * MAPIGetDefaultMalloc@0 (MAPI32.59)
  58  *
  59  * Get the default MAPI IMalloc interface.
  60  *
  61  * PARAMS
  62  *  None.
  63  *
  64  * RETURNS
  65  *  A pointer to the MAPI default allocator.
  66  */
  67 LPMALLOC WINAPI MAPIGetDefaultMalloc(void)
  68 {
  69     TRACE("()\n");
  70
  71     if (mapiFunctions.MAPIGetDefaultMalloc)
  72         return mapiFunctions.MAPIGetDefaultMalloc();
  73
  74     IMalloc_AddRef((LPMALLOC)&MAPI_IMalloc);
  75     return (LPMALLOC)&MAPI_IMalloc;
  76 }
  77
  78 /**************************************************************************
  79  * IMAPIMalloc_QueryInterface
  80  */
  81 static HRESULT WINAPI IMAPIMalloc_fnQueryInterface(LPMALLOC iface, REFIID refiid,
  82                                                    LPVOID *ppvObj)
  83 {
  84     TRACE("(%s,%p)\n", debugstr_guid(refiid), ppvObj);
  85
  86     if (IsEqualIID(refiid, &IID_IUnknown) ||
  87         IsEqualIID(refiid, &IID_IMalloc))
  88     {
  89         *ppvObj = &MAPI_IMalloc;
  90         TRACE("Returning IMalloc (%p)\n", *ppvObj);
  91         return S_OK;
  92     }
  93     TRACE("Returning E_NOINTERFACE\n");
  94     return E_NOINTERFACE;
  95 }
  96
  97 /**************************************************************************
  98  * IMAPIMalloc_AddRef
  99  */
 100 static ULONG WINAPI IMAPIMalloc_fnAddRef(LPMALLOC iface)
 101 {
 102     TRACE("(%p)\n", iface);
 103     InterlockedIncrement(&MAPI_ObjectCount);
 104     return 1u;
 105 }
 106
 107 /**************************************************************************
 108  * IMAPIMalloc_Release
 109  */
 110 static ULONG WINAPI IMAPIMalloc_fnRelease(LPMALLOC iface)
 111 {
 112     TRACE("(%p)\n", iface);
 113     InterlockedDecrement(&MAPI_ObjectCount);
 114     return 1u;
 115 }
 116
 117 /**************************************************************************
 118  * IMAPIMalloc_Alloc
 119  */
 120 static LPVOID WINAPI IMAPIMalloc_fnAlloc(LPMALLOC iface, DWORD cb)
 121 {
 122     TRACE("(%p)->(%d)\n", iface, cb);
 123
 124     return LocalAlloc(LMEM_FIXED, cb);
 125 }
 126
 127 /**************************************************************************
 128  * IMAPIMalloc_Realloc
 129  */
 130 static LPVOID WINAPI IMAPIMalloc_fnRealloc(LPMALLOC iface, LPVOID pv, DWORD cb)
 131 {
 132     TRACE("(%p)->(%p, %d)\n", iface, pv, cb);
 133
 134     if (!pv)
 135         return LocalAlloc(LMEM_FIXED, cb);
 136
 137     if (cb)
 138         return LocalReAlloc(pv, cb, LMEM_MOVEABLE);
 139
 140     LocalFree(pv);
 141     return NULL;
 142 }
 143
 144 /**************************************************************************
 145  * IMAPIMalloc_Free
 146  */
 147 static void WINAPI IMAPIMalloc_fnFree(LPMALLOC iface, LPVOID pv)
 148 {
 149     TRACE("(%p)->(%p)\n", iface, pv);
 150     LocalFree(pv);
 151 }
 152
 153 /**************************************************************************
 154  * IMAPIMalloc_GetSize
 155  */
 156 static DWORD WINAPI IMAPIMalloc_fnGetSize(LPMALLOC iface, LPVOID pv)
 157 {
 158     TRACE("(%p)->(%p)\n", iface, pv);
 159     return LocalSize(pv);
 160 }
 161
 162 /**************************************************************************
 163  * IMAPIMalloc_DidAlloc
 164  */
 165 static INT WINAPI IMAPIMalloc_fnDidAlloc(LPMALLOC iface, LPVOID pv)
 166 {
 167     TRACE("(%p)->(%p)\n", iface, pv);
 168     return -1;
 169 }
 170
 171 /**************************************************************************
 172  * IMAPIMalloc_HeapMinimize
 173  */
 174 static void WINAPI IMAPIMalloc_fnHeapMinimize(LPMALLOC iface)
 175 {
 176     TRACE("(%p)\n", iface);
 177 }
 178
 179 static const IMallocVtbl MAPI_IMalloc_vt =
 180 {
 181     IMAPIMalloc_fnQueryInterface,
 182     IMAPIMalloc_fnAddRef,
 183     IMAPIMalloc_fnRelease,
 184     IMAPIMalloc_fnAlloc,
 185     IMAPIMalloc_fnRealloc,
 186     IMAPIMalloc_fnFree,
 187     IMAPIMalloc_fnGetSize,
 188     IMAPIMalloc_fnDidAlloc,
 189     IMAPIMalloc_fnHeapMinimize
 190 };