[jgardou] 47788: [WIN32k] - Chek if there is something to do in GDIOBJ_SetOwnership before doing it

Author: jgardou
Date: Wed Jun 16 18:47:04 2010
New Revision: 47788

URL: http://svn.reactos.org/svn/reactos?rev=47788&view=rev
Log:
[WIN32k]
  - Chek if there is something to do in GDIOBJ_SetOwnership before doing it

Modified:
    trunk/reactos/subsystems/win32/win32k/objects/gdiobj.c

Modified: trunk/reactos/subsystems/win32/win32k/objects/gdiobj.c
URL: http://svn.reactos.org/svn/reactos/trunk/reactos/subsystems/win32/win32k/obj...
==============================================================================
--- trunk/reactos/subsystems/win32/win32k/objects/gdiobj.c [iso-8859-1] (original)
+++ trunk/reactos/subsystems/win32/win32k/objects/gdiobj.c [iso-8859-1] Wed Jun 16 18:47:04 2010
@@ -1412,6 +1412,19 @@
                     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)
@@ -1430,8 +1443,6 @@

if (NewOwner != NULL)
                     {
-                        ProcessId = PsGetProcessId(NewOwner);
-
                         /* Increase the new process' object counter */
                         W32Process = (PPROCESSINFO)NewOwner->Win32Process;
                         if (W32Process != NULL)
@@ -1439,9 +1450,8 @@
                             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);