[Win32k]

[reactos.git] / reactos / subsystems / win32 / win32k / include / gdiobj.h

diff --git a/reactos/subsystems/win32/win32k/include/gdiobj.h b/reactos/subsystems/win32/win32k/include/gdiobj.h
index e736391..3f581bc 100644 (file)
--- a/reactos/subsystems/win32/win32k/include/gdiobj.h
+++ b/reactos/subsystems/win32/win32k/include/gdiobj.h
@@ -9,6 +9,9 @@
 #include <win32k/ntgdihdl.h>
 #include "win32.h"
 
+/* apparently the first 10 entries are never used in windows as they are empty */
+#define RESERVE_ENTRIES_COUNT 10
+
 typedef struct _GDI_HANDLE_TABLE
 {
 /* The table must be located at the beginning of this structure so it can be
@@ -105,6 +108,19 @@ ULONG
 FORCEINLINE
 GDIOBJ_UnlockObjByPtr(POBJ Object)
 {
+#if DBG
+    PTHREADINFO pti = (PTHREADINFO)PsGetCurrentThreadWin32Thread();
+    if (pti)
+    {
+        if (pti->cExclusiveLocks < 1)
+        {
+            DbgPrint("cExclusiveLocks = %ld, object: %ld\n",
+                    pti->cExclusiveLocks, Object->cExclusiveLock);
+            ASSERT(FALSE);
+        }
+        pti->cExclusiveLocks--;
+    }
+#endif
     INT cLocks = InterlockedDecrement((PLONG)&Object->cExclusiveLock);
     ASSERT(cLocks >= 0);
     return cLocks;
@@ -120,6 +136,7 @@ GDIOBJ_ShareUnlockObjByPtr(POBJ Object)
     ASSERT(cLocks >= 0);
     if ((flags & BASEFLAG_READY_TO_DIE) && (cLocks == 0))
     {
+        ASSERT(Object->cExclusiveLock == 0);
         GDIOBJ_SetOwnership(hobj, PsGetCurrentProcess());
         GDIOBJ_FreeObjByHandle(hobj, GDI_OBJECT_TYPE_DONTCARE);
     }
@@ -143,3 +160,7 @@ INT FASTCALL GreGetObjectOwner(HGDIOBJ, GDIOBJTYPE);
 
 #define GDIOBJ_GetKernelObj(Handle) \
   ((PGDI_TABLE_ENTRY)&GdiHandleTable->Entries[GDI_HANDLE_GET_INDEX(Handle)])->KernelData
+#define GDI_ENTRY_TO_INDEX(ht, e)                                              \
+  (((ULONG_PTR)(e) - (ULONG_PTR)&((ht)->Entries[0])) / sizeof(GDI_TABLE_ENTRY))
+#define GDI_HANDLE_GET_ENTRY(HandleTable, h)                                   \
+  (&(HandleTable)->Entries[GDI_HANDLE_GET_INDEX((h))])