Changeset 56264 in vbox

Timestamp:

Jun 5, 2015 4:08:22 PM (9 years ago)

Author:

vboxsync

Message:

Additions/WDDM: prevent system D3D DLL from unloading until guest App process is terminated (fixed some crashes).

File:

• trunk/src/VBox/Additions/WINNT/Graphics/Video/disp/wddm/VBoxDispD3D.cpp (modified) (1 diff)

trunk/src/VBox/Additions/WINNT/Graphics/Video/disp/wddm/VBoxDispD3D.cpp

@@ -6256 +6256 @@
     if (SUCCEEDED(hr))
     {
-        if (GetModuleHandleEx(GET_MODULE_HANDLE_EX_FLAG_FROM_ADDRESS,
+        /* Get system D3D DLL handle and prevent its unloading until entire process termination (GET_MODULE_HANDLE_EX_FLAG_PIN).
+         * This is important because even after guest App issued CloseAdatper() call, we still use pointers provided by DLL. */
+        if (GetModuleHandleEx(GET_MODULE_HANDLE_EX_FLAG_FROM_ADDRESS | GET_MODULE_HANDLE_EX_FLAG_PIN,
                                 (LPCWSTR)pDevice->RtCallbacks.pfnAllocateCb,
                                 &pDevice->hHgsmiTransportModule))
         {
             Assert(pDevice->hHgsmiTransportModule);
+            vboxVDbgPrintR((__FUNCTION__": system D3D DLL referenced with GET_MODULE_HANDLE_EX_FLAG_PIN flag\n"));
         }
         else