dlls/quartz/complist.c

   1 /*
   2  * List of components. (for internal use)
   3  *
   4  * hidenori@a2.ctktv.ne.jp
   5  */
   6
   7 #include "config.h"
   8
   9 #include "windef.h"
  10 #include "winbase.h"
  11 #include "winerror.h"
  12 #include "wine/obj_base.h"
  13
  14 #include "debugtools.h"
  15 DEFAULT_DEBUG_CHANNEL(quartz);
  16
  17 #include "quartz_private.h"
  18 #include "complist.h"
  19
  20
  21
  22 struct QUARTZ_CompList
  23 {
  24         QUARTZ_CompListItem*    pFirst;
  25         QUARTZ_CompListItem*    pLast;
  26         CRITICAL_SECTION                csList;
  27 };
  28
  29 struct QUARTZ_CompListItem
  30 {
  31         IUnknown*       punk;
  32         QUARTZ_CompListItem*    pNext;
  33         QUARTZ_CompListItem*    pPrev;
  34         void*   pvData;
  35         DWORD   dwDataLen;
  36 };
  37
  38
  39 QUARTZ_CompList* QUARTZ_CompList_Alloc( void )
  40 {
  41         QUARTZ_CompList*        pList;
  42
  43         pList = (QUARTZ_CompList*)QUARTZ_AllocMem( sizeof(QUARTZ_CompList) );
  44         if ( pList != NULL )
  45         {
  46                 /* construct. */
  47                 pList->pFirst = NULL;
  48                 pList->pLast = NULL;
  49
  50                 InitializeCriticalSection( &pList->csList );
  51         }
  52
  53         return pList;
  54 }
  55
  56 void QUARTZ_CompList_Free( QUARTZ_CompList* pList )
  57 {
  58         QUARTZ_CompListItem*    pCur;
  59         QUARTZ_CompListItem*    pNext;
  60
  61         if ( pList != NULL )
  62         {
  63                 pCur = pList->pFirst;
  64                 while ( pCur != NULL )
  65                 {
  66                         pNext = pCur->pNext;
  67                         if ( pCur->punk != NULL )
  68                                 IUnknown_Release( pCur->punk );
  69                         if ( pCur->pvData != NULL )
  70                                 QUARTZ_FreeMem( pCur->pvData );
  71                         QUARTZ_FreeMem( pCur );
  72                         pCur = pNext;
  73                 }
  74
  75                 DeleteCriticalSection( &pList->csList );
  76
  77                 QUARTZ_FreeMem( pList );
  78         }
  79 }
  80
  81 void QUARTZ_CompList_Lock( QUARTZ_CompList* pList )
  82 {
  83         EnterCriticalSection( &pList->csList );
  84 }
  85
  86 void QUARTZ_CompList_Unlock( QUARTZ_CompList* pList )
  87 {
  88         LeaveCriticalSection( &pList->csList );
  89 }
  90
  91 QUARTZ_CompList* QUARTZ_CompList_Dup(
  92         const QUARTZ_CompList* pList, BOOL fDupData )
  93 {
  94         QUARTZ_CompList*        pNewList;
  95         const QUARTZ_CompListItem*      pCur;
  96         HRESULT hr;
  97
  98         pNewList = QUARTZ_CompList_Alloc();
  99         if ( pNewList == NULL )
 100                 return NULL;
 101
 102         pCur = pList->pFirst;
 103         while ( pCur != NULL )
 104         {
 105                 if ( pCur->punk != NULL )
 106                 {
 107                         if ( fDupData )
 108                                 hr = QUARTZ_CompList_AddComp(
 109                                         pNewList, pCur->punk,
 110                                         pCur->pvData, pCur->dwDataLen );
 111                         else
 112                                 hr = QUARTZ_CompList_AddComp(
 113                                         pNewList, pCur->punk, NULL, 0 );
 114                         if ( FAILED(hr) )
 115                         {
 116                                 QUARTZ_CompList_Free( pNewList );
 117                                 return NULL;
 118                         }
 119                 }
 120                 pCur = pCur->pNext;
 121         }
 122
 123         return pNewList;
 124 }
 125
 126 static QUARTZ_CompListItem* QUARTZ_CompList_AllocComp(
 127         QUARTZ_CompList* pList, IUnknown* punk,
 128         const void* pvData, DWORD dwDataLen )
 129 {
 130         QUARTZ_CompListItem*    pItem;
 131
 132         pItem = (QUARTZ_CompListItem*)QUARTZ_AllocMem( sizeof(QUARTZ_CompListItem) );
 133         if ( pItem == NULL )
 134                 return NULL;
 135
 136         pItem->pvData = NULL;
 137         pItem->dwDataLen = 0;
 138         if ( pvData != NULL )
 139         {
 140                 pItem->pvData = (void*)QUARTZ_AllocMem( dwDataLen );
 141                 if ( pItem->pvData == NULL )
 142                 {
 143                         QUARTZ_FreeMem( pItem );
 144                         return NULL;
 145                 }
 146                 memcpy( pItem->pvData, pvData, dwDataLen );
 147                 pItem->dwDataLen = dwDataLen;
 148         }
 149
 150         pItem->punk = punk; IUnknown_AddRef(punk);
 151
 152         return pItem;
 153 }
 154
 155 HRESULT QUARTZ_CompList_AddComp(
 156         QUARTZ_CompList* pList, IUnknown* punk,
 157         const void* pvData, DWORD dwDataLen )
 158 {
 159         QUARTZ_CompListItem*    pItem;
 160
 161         pItem = QUARTZ_CompList_AllocComp( pList, punk, pvData, dwDataLen );
 162         if ( pItem == NULL )
 163                 return E_OUTOFMEMORY;
 164
 165         if ( pList->pFirst != NULL )
 166                 pList->pFirst->pPrev = pItem;
 167         else
 168                 pList->pLast = pItem;
 169         pItem->pNext = pList->pFirst;
 170         pList->pFirst = pItem;
 171         pItem->pPrev = NULL;
 172
 173         return S_OK;
 174 }
 175
 176 HRESULT QUARTZ_CompList_AddTailComp(
 177         QUARTZ_CompList* pList, IUnknown* punk,
 178         const void* pvData, DWORD dwDataLen )
 179 {
 180         QUARTZ_CompListItem*    pItem;
 181
 182         pItem = QUARTZ_CompList_AllocComp( pList, punk, pvData, dwDataLen );
 183         if ( pItem == NULL )
 184                 return E_OUTOFMEMORY;
 185
 186         if ( pList->pLast != NULL )
 187                 pList->pLast->pNext = pItem;
 188         else
 189                 pList->pFirst = pItem;
 190         pItem->pPrev = pList->pLast;
 191         pList->pLast = pItem;
 192         pItem->pNext = NULL;
 193
 194         return S_OK;
 195 }
 196
 197 HRESULT QUARTZ_CompList_RemoveComp( QUARTZ_CompList* pList, IUnknown* punk )
 198 {
 199         QUARTZ_CompListItem*    pCur;
 200
 201         pCur = QUARTZ_CompList_SearchComp( pList, punk );
 202         if ( pCur == NULL )
 203                 return S_FALSE; /* already removed. */
 204
 205         /* remove from list. */
 206         if ( pCur->pNext != NULL )
 207                 pCur->pNext->pPrev = pCur->pPrev;
 208         else
 209                 pList->pLast = pCur->pPrev;
 210         if ( pCur->pPrev != NULL )
 211                 pCur->pPrev->pNext = pCur->pNext;
 212         else
 213                 pList->pFirst = pCur->pNext;
 214
 215         /* release this item. */
 216         if ( pCur->punk != NULL )
 217                 IUnknown_Release( pCur->punk );
 218         if ( pCur->pvData != NULL )
 219                 QUARTZ_FreeMem( pCur->pvData );
 220         QUARTZ_FreeMem( pCur );
 221
 222         return S_OK;
 223 }
 224
 225 QUARTZ_CompListItem* QUARTZ_CompList_SearchComp(
 226         QUARTZ_CompList* pList, IUnknown* punk )
 227 {
 228         QUARTZ_CompListItem*    pCur;
 229
 230         pCur = pList->pFirst;
 231         while ( pCur != NULL )
 232         {
 233                 if ( pCur->punk == punk )
 234                         return pCur;
 235                 pCur = pCur->pNext;
 236         }
 237
 238         return NULL;
 239 }
 240
 241 QUARTZ_CompListItem* QUARTZ_CompList_SearchData(
 242         QUARTZ_CompList* pList, const void* pvData, DWORD dwDataLen )
 243 {
 244         QUARTZ_CompListItem*    pCur;
 245
 246         pCur = pList->pFirst;
 247         while ( pCur != NULL )
 248         {
 249                 if ( pCur->dwDataLen == dwDataLen &&
 250                      !memcmp( pCur->pvData, pvData, dwDataLen ) )
 251                         return pCur;
 252                 pCur = pCur->pNext;
 253         }
 254
 255         return NULL;
 256 }
 257
 258 QUARTZ_CompListItem* QUARTZ_CompList_GetFirst(
 259         QUARTZ_CompList* pList )
 260 {
 261         return pList->pFirst;
 262 }
 263
 264 QUARTZ_CompListItem* QUARTZ_CompList_GetLast(
 265         QUARTZ_CompList* pList )
 266 {
 267         return pList->pLast;
 268 }
 269
 270 QUARTZ_CompListItem* QUARTZ_CompList_GetNext(
 271         QUARTZ_CompList* pList, QUARTZ_CompListItem* pPrev )
 272 {
 273         return pPrev->pNext;
 274 }
 275
 276 QUARTZ_CompListItem* QUARTZ_CompList_GetPrev(
 277         QUARTZ_CompList* pList, QUARTZ_CompListItem* pNext )
 278 {
 279         return pNext->pPrev;
 280 }
 281
 282 IUnknown* QUARTZ_CompList_GetItemPtr( QUARTZ_CompListItem* pItem )
 283 {
 284         return pItem->punk;
 285 }
 286
 287 const void* QUARTZ_CompList_GetDataPtr( QUARTZ_CompListItem* pItem )
 288 {
 289         return pItem->pvData;
 290 }
 291
 292 DWORD QUARTZ_CompList_GetDataLength( QUARTZ_CompListItem* pItem )
 293 {
 294         return pItem->dwDataLen;
 295 }