//#define GDI_DEBUG
-#include <w32k.h>
+#include <win32k.h>
#define NDEBUG
#include <debug.h>
/** INTERNAL FUNCTIONS ********************************************************/
+// Audit Functions
+int tDC = 0;
+int tBRUSH = 0;
+int tBITMAP = 0;
+int tFONT = 0;
+int tRGN = 0;
+
+VOID
+AllocTypeDataDump(INT TypeInfo)
+{
+ switch( TypeInfo & GDI_HANDLE_TYPE_MASK )
+ {
+ case GDILoObjType_LO_BRUSH_TYPE:
+ tBRUSH++;
+ break;
+ case GDILoObjType_LO_DC_TYPE:
+ tDC++;
+ break;
+ case GDILoObjType_LO_BITMAP_TYPE:
+ tBITMAP++;
+ break;
+ case GDILoObjType_LO_FONT_TYPE:
+ tFONT++;
+ break;
+ case GDILoObjType_LO_REGION_TYPE:
+ tRGN++;
+ break;
+ }
+}
+
+VOID
+DeAllocTypeDataDump(INT TypeInfo)
+{
+ switch( TypeInfo & GDI_HANDLE_TYPE_MASK )
+ {
+ case GDILoObjType_LO_BRUSH_TYPE:
+ tBRUSH--;
+ break;
+ case GDILoObjType_LO_DC_TYPE:
+ tDC--;
+ break;
+ case GDILoObjType_LO_BITMAP_TYPE:
+ tBITMAP--;
+ break;
+ case GDILoObjType_LO_FONT_TYPE:
+ tFONT--;
+ break;
+ case GDILoObjType_LO_REGION_TYPE:
+ tRGN--;
+ break;
+ }
+}
+
/*
* Dummy GDI Cleanup Callback
*/
if (W32Process && W32Process->GDIHandleCount >= 0x2710)
{
DPRINT1("Too many objects for process!!!\n");
+ DPRINT1("DC %d BRUSH %d BITMAP %d FONT %d RGN %d\n",tDC,tBRUSH,tBITMAP,tFONT,tRGN);
GDIDBG_DUMPHANDLETABLE();
return NULL;
}
newObject->cExclusiveLock = 1;
newObject->Tid = Thread;
+ AllocTypeDataDump(TypeInfo);
+
/* unlock the entry */
(void)InterlockedExchangePointer((PVOID*)&Entry->ProcessId, CurrentProcessId);
TypeIndex = GDI_OBJECT_GET_TYPE_INDEX(HandleType);
Ret = ObjTypeInfo[TypeIndex].CleanupProc(Object);
+ DeAllocTypeDataDump(HandleType);
+
/* Now it's time to free the memory */
GDIOBJ_FreeObj(Object, TypeIndex);
}
else if (Object->ulShareCount != 0)
{
+ NTSTATUS Status;
+ PEPROCESS OldProcess;
Object->BaseFlags |= BASEFLAG_READY_TO_DIE;
DPRINT("Object %p, ulShareCount = %d\n", Object->hHmgr, Object->ulShareCount);
//GDIDBG_TRACECALLER();
//GDIDBG_TRACESHARELOCKER(GDI_HANDLE_GET_INDEX(hObj));
+ /* Set NULL owner. This will permit an other process to kill the object
+ * Do the work here to avoid race conditions */
+ Status = PsLookupProcessByProcessId((HANDLE)((ULONG_PTR)PrevProcId & ~0x1), &OldProcess);
+ if (NT_SUCCESS(Status))
+ {
+ PPROCESSINFO W32Process = (PPROCESSINFO)OldProcess->Win32Process;
+ if (W32Process != NULL)
+ {
+ InterlockedDecrement(&W32Process->GDIHandleCount);
+ }
+ ObDereferenceObject(OldProcess);
+ }
(void)InterlockedExchangePointer((PVOID*)&Entry->ProcessId, PrevProcId);
/* Don't wait on shared locks */
return FALSE;
}
+BOOL
+FASTCALL
+bPEBCacheHandle(HGDIOBJ Handle, int oType, PVOID pAttr)
+{
+ PGDIHANDLECACHE GdiHandleCache;
+ HGDIOBJ *hPtr;
+ BOOL Ret = FALSE;
+ int Offset = 0, Number;
+ HANDLE Lock;
+
+ GdiHandleCache = (PGDIHANDLECACHE)NtCurrentTeb()->ProcessEnvironmentBlock->GdiHandleBuffer;
+
+ switch (oType)
+ {
+ case hctBrushHandle:
+ Offset = 0;
+ break;
+
+ case hctPenHandle:
+ Offset = CACHE_BRUSH_ENTRIES;
+ break;
+
+ case hctRegionHandle:
+ Offset = CACHE_BRUSH_ENTRIES+CACHE_PEN_ENTRIES;
+ break;
+
+ default:
+ return FALSE;
+ }
+
+ Lock = InterlockedCompareExchangePointer( (PVOID*)&GdiHandleCache->ulLock,
+ NtCurrentTeb(),
+ NULL );
+ if (Lock) return FALSE;
+
+ _SEH2_TRY
+ {
+ Number = GdiHandleCache->ulNumHandles[oType];
+
+ hPtr = GdiHandleCache->Handle + Offset;
+
+ if ( pAttr && oType == hctRegionHandle)
+ {
+ if ( Number < CACHE_REGION_ENTRIES )
+ {
+ ((PRGN_ATTR)pAttr)->AttrFlags |= ATTR_CACHED;
+ hPtr[Number] = Handle;
+ GdiHandleCache->ulNumHandles[oType]++;
+ DPRINT("Put Handle Count %d PEB 0x%x\n", GdiHandleCache->ulNumHandles[oType], NtCurrentTeb()->ProcessEnvironmentBlock);
+ Ret = TRUE;
+ }
+ }
+ }
+ _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
+ {
+ Ret = FALSE;
+ }
+ _SEH2_END;
+
+ (void)InterlockedExchangePointer((PVOID*)&GdiHandleCache->ulLock, Lock);
+ return Ret;
+}
+
/*!
* Delete GDI object
* \param hObject object handle
FASTCALL
GreDeleteObject(HGDIOBJ hObject)
{
+ INT Index;
+ PGDI_TABLE_ENTRY Entry;
+ DWORD dwObjectType;
+ PVOID pAttr = NULL;
+
DPRINT("NtGdiDeleteObject handle 0x%08x\n", hObject);
if (!IsObjectDead(hObject))
{
- return NULL != hObject
- ? GDIOBJ_FreeObjByHandle(hObject, GDI_OBJECT_TYPE_DONTCARE) : FALSE;
+ dwObjectType = GDIOBJ_GetObjectType(hObject);
+
+ Index = GDI_HANDLE_GET_INDEX(hObject);
+ Entry = &GdiHandleTable->Entries[Index];
+ pAttr = Entry->UserData;
+
+ switch (dwObjectType)
+ {
+ case GDI_OBJECT_TYPE_BRUSH:
+ break;
+
+ case GDI_OBJECT_TYPE_REGION:
+ /* If pAttr NULL, the probability is high for System Region. */
+ if ( pAttr &&
+ bPEBCacheHandle(hObject, hctRegionHandle, pAttr))
+ {
+ /* User space handle only! */
+ return TRUE;
+ }
+ if (pAttr)
+ {
+ FreeObjectAttr(pAttr);
+ Entry->UserData = NULL;
+ }
+ break;
+
+ case GDI_OBJECT_TYPE_DC:
+ DC_FreeDcAttr(hObject);
+ break;
+ }
+
+ return NULL != hObject
+ ? GDIOBJ_FreeObjByHandle(hObject, dwObjectType) : FALSE;
}
else
{
POBJ Object = NULL;
ULONG HandleType, HandleUpper;
+ /* Check for dummy call */
+ if(hObj == NULL)
+ return NULL ;
+
HandleIndex = GDI_HANDLE_GET_INDEX(hObj);
HandleType = GDI_HANDLE_GET_TYPE(hObj);
HandleUpper = GDI_HANDLE_GET_UPPER(hObj);
POBJ Object = NULL;
ULONG_PTR HandleType, HandleUpper;
+ /* Check for dummy call */
+ if(hObj == NULL)
+ return NULL ;
+
HandleIndex = GDI_HANDLE_GET_INDEX(hObj);
HandleType = GDI_HANDLE_GET_TYPE(hObj);
HandleUpper = GDI_HANDLE_GET_UPPER(hObj);
PPROCESSINFO W32Process;
NTSTATUS Status;
+ if (NewOwner != NULL)
+ {
+ ProcessId = PsGetProcessId(NewOwner);
+ }
+ else
+ ProcessId = 0;
+
+ if((ULONG_PTR)ProcessId == ((ULONG_PTR)PrevProcId & ~0x1))
+ {
+ DPRINT("Setting same process than previous one, nothing to do\n");
+ goto done;
+ }
+
/* dereference the process' object counter */
/* FIXME */
if ((ULONG_PTR)PrevProcId & ~0x1)
if (NewOwner != NULL)
{
- ProcessId = PsGetProcessId(NewOwner);
-
/* Increase the new process' object counter */
W32Process = (PPROCESSINFO)NewOwner->Win32Process;
if (W32Process != NULL)
InterlockedIncrement(&W32Process->GDIHandleCount);
}
}
- else
- ProcessId = 0;
+ done:
/* remove the process id lock and change it to the new process id */
(void)InterlockedExchangePointer((PVOID*)&Entry->ProcessId, ProcessId);
/** PUBLIC FUNCTIONS **********************************************************/
-/*
- Since Brush/Pen and Region objects are sharable,,, we can just use
- UserHeapAlloc to allocate the small attribute objects.
-
- Example Allocating:
-
- // Save Kernel Space Pointer
- (PBRUSH)->pBrushAttr = IntGdiAllocObjAttr(GDIObjType_BRUSH_TYPE);
-
- // Kernel Space to User Space Pointer
- (PGDI_TABLE_ENTRY)->UserData = pBrushAttr;
- // Gdi will adjust for heap delta.
-
- Example Freeing:
-
- (PGDI_TABLE_ENTRY)->UserData = NULL; // Zero the user ptr.
- UserHeapFree((PBRUSH)->pBrushAttr); // Free from kernel ptr.
- (PBRUSH)->pBrushAttr = NULL;
-
- Notes:
- Testing with DC_ATTR works but has drawing difficulties.
- Base on observation, (Over looking the obvious) we need to supply heap delta
- to user space gdi. Now, with testing, looks all normal.
-
- */
-PVOID
+BOOL
FASTCALL
-IntGdiAllocObjAttr(GDIOBJTYPE Type)
+IntGdiSetRegionOwner(HRGN hRgn, DWORD OwnerMask)
{
- PVOID pMemAttr = NULL;
-
- switch( Type )
+ INT Index;
+ PGDI_TABLE_ENTRY Entry;
+/*
+ System Regions:
+ These regions do not use attribute sections and when allocated, use gdiobj
+ level functions.
+ */
+ // FIXME! HAX!!! Remove this once we get everything right!
+ Index = GDI_HANDLE_GET_INDEX(hRgn);
+ Entry = &GdiHandleTable->Entries[Index];
+ if (Entry->UserData) FreeObjectAttr(Entry->UserData);
+ Entry->UserData = NULL;
+ //
+ if ((OwnerMask == GDI_OBJ_HMGR_PUBLIC) || OwnerMask == GDI_OBJ_HMGR_NONE)
{
- case GDIObjType_DC_TYPE:
- pMemAttr = UserHeapAlloc(sizeof(DC_ATTR));
- if (pMemAttr) RtlZeroMemory(pMemAttr, sizeof(DC_ATTR));
- break;
- case GDIObjType_RGN_TYPE:
- pMemAttr = UserHeapAlloc(sizeof(RGN_ATTR));
- if (pMemAttr) RtlZeroMemory(pMemAttr, sizeof(RGN_ATTR));
- break;
- case GDIObjType_BRUSH_TYPE:
- pMemAttr = UserHeapAlloc(sizeof(BRUSH_ATTR));
- if (pMemAttr) RtlZeroMemory(pMemAttr, sizeof(BRUSH_ATTR));
- break;
- default:
- break;
+ return GDIOBJ_SetOwnership(hRgn, NULL);
}
- return pMemAttr;
+ if (OwnerMask == GDI_OBJ_HMGR_POWNED)
+ {
+ return GDIOBJ_SetOwnership((HGDIOBJ) hRgn, PsGetCurrentProcess() );
+ }
+ return FALSE;
}
-
BOOL
FASTCALL
IntGdiSetBrushOwner(PBRUSH pbr, DWORD OwnerMask)
return TRUE;
}
-
BOOL
FASTCALL
IntGdiSetDCOwnerEx( HDC hDC, DWORD OwnerMask, BOOL NoSetBrush)
return Ret;
}
-
W32KAPI
HANDLE
APIENTRY
projects / reactos.git / blobdiff