Changeset 8781 in vbox for trunk/src/VBox/Additions/WINNT/VBoxGuest/NTLegacy.cpp

Timestamp:

May 12, 2008 12:51:19 PM (17 years ago)

Author:

vboxsync

Message:

Windows guest HGCM optimization: use a preallocated timeout variable.

File:

• trunk/src/VBox/Additions/WINNT/VBoxGuest/NTLegacy.cpp (modified) (1 diff)

trunk/src/VBox/Additions/WINNT/VBoxGuest/NTLegacy.cpp

@@ -242 +242 @@
         // initialize the event notification semaphore
         KeInitializeEvent(&pDevExt->keventNotification, NotificationEvent, FALSE);
+
+        /* Preallocated constant timeout 250ms for HGCM async waiter. */
+        pDevExt->HGCMWaitTimeout.QuadPart  = 250;
+        pDevExt->HGCMWaitTimeout.QuadPart *= -10000;     /* relative in 100ns units */
     }