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made the DCE list thread-safe

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svn path=/trunk/; revision=8978
This commit is contained in:
Thomas Bluemel 2004-04-05 20:46:15 +00:00
parent c89da97139
commit 0a205b8bd5
1 changed files with 40 additions and 12 deletions
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52
reactos/subsys/win32k/ntuser/windc.c
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@ -16,7 +16,7 @@
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
/* $Id: windc.c,v 1.61 2004/03/23 18:08:07 weiden Exp $
/* $Id: windc.c,v 1.62 2004/04/05 20:46:15 weiden Exp $
*
* COPYRIGHT: See COPYING in the top level directory
* PROJECT: ReactOS kernel
@ -49,14 +49,26 @@
/* GLOBALS *******************************************************************/
/* NOTE - I think we should store this per window station (including gdi objects) */
static FAST_MUTEX DceListLock;
static PDCE FirstDce = NULL;
static HDC defaultDCstate;
#define DCE_LockList ExAcquireFastMutex(&DceListLock)
#define DCE_UnlockList ExReleaseFastMutex(&DceListLock)
#define DCX_CACHECOMPAREMASK (DCX_CLIPSIBLINGS | DCX_CLIPCHILDREN | \
DCX_CACHE | DCX_WINDOW | DCX_PARENTCLIP)
/* FUNCTIONS *****************************************************************/
VOID FASTCALL
DceInit(VOID)
{
ExInitializeFastMutex(&DceListLock);
}
HRGN STDCALL
DceGetVisRgn(HWND hWnd, ULONG Flags, HWND hWndChild, ULONG CFlags)
{
@ -111,8 +123,10 @@ DceAllocDCE(HWND hWnd, DCE_TYPE Type)
}
Dce->hwndCurrent = hWnd;
Dce->hClipRgn = NULL;
DCE_LockList;
Dce->next = FirstDce;
FirstDce = Dce;
DCE_UnlockList;
if (Type != DCE_CACHE_DC)
{
@ -408,6 +422,8 @@ NtUserGetDCEx(HWND hWnd, HANDLE ClipRegion, ULONG Flags)
{
DCE* DceEmpty = NULL;
DCE* DceUnused = NULL;
DCE_LockList;
for (Dce = FirstDce; Dce != NULL; Dce = Dce->next)
{
@ -430,6 +446,8 @@ NtUserGetDCEx(HWND hWnd, HANDLE ClipRegion, ULONG Flags)
}
}
DCE_UnlockList;
if (Dce == NULL)
{
Dce = (DceEmpty == NULL) ? DceEmpty : DceUnused;
@ -555,7 +573,9 @@ BOOL FASTCALL
DCE_InternalDelete(PDCE Dce)
{
PDCE PrevInList;
DCE_LockList;
if (Dce == FirstDce)
{
FirstDce = Dce->next;
@ -574,6 +594,8 @@ DCE_InternalDelete(PDCE Dce)
assert(NULL != PrevInList);
}
DCE_UnlockList;
return NULL != PrevInList;
}
@ -581,13 +603,17 @@ HWND FASTCALL
IntWindowFromDC(HDC hDc)
{
DCE *Dce;
DCE_LockList;
for (Dce = FirstDce; Dce != NULL; Dce = Dce->next)
{
if(Dce->hDC == hDc)
{
DCE_UnlockList;
return Dce->hwndCurrent;
}
}
DCE_UnlockList;
return 0;
}
@ -597,7 +623,8 @@ NtUserReleaseDC(HWND hWnd, HDC hDc)
DCE *dce;
INT nRet = 0;
/* FIXME USER_Lock(); */
DCE_LockList;
dce = FirstDce;
DPRINT("%p %p\n", hWnd, hDc);
@ -612,7 +639,7 @@ NtUserReleaseDC(HWND hWnd, HDC hDc)
nRet = DceReleaseDC(dce);
}
/* FIXME USER_Unlock(); */
DCE_UnlockList;
return nRet;
}
@ -631,16 +658,8 @@ DceFreeDCE(PDCE dce)
return NULL;
}
#if 0 /* FIXME */
USER_Lock();
#endif
ret = dce->next;
#if 0 /* FIXME */
USER_Unlock();
#endif
#if 0 /* FIXME */
SetDCHook(dce->hDC, NULL, 0L);
#endif
@ -668,6 +687,8 @@ DceFreeWindowDCE(PWINDOW_OBJECT Window)
{
DCE *pDCE;
DCE_LockList;
pDCE = FirstDce;
while (pDCE)
{
@ -709,15 +730,18 @@ DceFreeWindowDCE(PWINDOW_OBJECT Window)
}
pDCE = pDCE->next;
}
DCE_UnlockList;
}
void FASTCALL
DceEmptyCache()
{
DCE_LockList;
while (FirstDce != NULL)
{
DceFreeDCE(FirstDce);
}
DCE_UnlockList;
}
VOID FASTCALL
@ -732,6 +756,8 @@ DceResetActiveDCEs(PWINDOW_OBJECT Window, int DeltaX, int DeltaY)
return;
}
DCE_LockList;
pDCE = FirstDce;
while (pDCE)
{
@ -785,6 +811,8 @@ DceResetActiveDCEs(PWINDOW_OBJECT Window, int DeltaX, int DeltaY)
}
pDCE = pDCE->next;
}
DCE_UnlockList;
}
/* EOF */