Changeset 30686 in vbox for trunk/src/VBox/Additions/WINNT/Graphics/Miniport/wddm

Timestamp:

Jul 7, 2010 12:14:18 AM (14 years ago)

Author:

vboxsync

Message:

wddm/3d: fix command pipe

File:

• trunk/src/VBox/Additions/WINNT/Graphics/Miniport/wddm/VBoxVideoVdma.cpp (modified) (4 diffs)

trunk/src/VBox/Additions/WINNT/Graphics/Miniport/wddm/VBoxVideoVdma.cpp

@@ -137 +137 @@
     do
     {
+        bool bListEmpty = true;
         KeAcquireSpinLock(&pPipe->SinchLock, &OldIrql);
         Assert(pPipe->enmState == VBOXVDMAPIPE_STATE_OPENNED
@@ -145 +146 @@
         {
             vboxVideoLeDetach(&pPipe->CmdListHead, pDetachHead);
-            pPipe->bNeedNotify = false;
+            bListEmpty = IsListEmpty(pDetachHead);
+            pPipe->bNeedNotify = bListEmpty;
         }
         else
@@ -156 +158 @@
         KeReleaseSpinLock(&pPipe->SinchLock, OldIrql);
 
-        if (!IsListEmpty(pDetachHead))
+        if (!bListEmpty)
         {
             Assert(Status == STATUS_SUCCESS);
@@ -164 +166 @@
         if (enmState == VBOXVDMAPIPE_STATE_OPENNED)
         {
-            KeAcquireSpinLock(&pPipe->SinchLock, &OldIrql);
-            pPipe->bNeedNotify = true;
-            KeReleaseSpinLock(&pPipe->SinchLock, OldIrql);
-
             Status = KeWaitForSingleObject(&pPipe->Event, Executive, KernelMode, FALSE, NULL /* PLARGE_INTEGER Timeout */);
             Assert(Status == STATUS_SUCCESS);