Changeset 51762 in vbox for trunk/src/VBox/Main/include

Timestamp:

Jun 30, 2014 9:31:20 AM (11 years ago)

Author:

vboxsync

svn:sync-xref-src-repo-rev:

94576

Message:

DisplayImpl: legacy video accel lock fixes, do not call VGA under the lock.

File:

• trunk/src/VBox/Main/include/DisplayImpl.h (modified) (3 diffs)

trunk/src/VBox/Main/include/DisplayImpl.h

@@ -335 +335 @@
     void handleResizeCompletedEMT(unsigned uScreenId, BOOL fResizeContext);
 
+    /* Old guest additions (3.x?) use VMMDev for VBVA and the host VBVA code (VideoAccel*)
+     * can be executed concurrently by VGA refresh timer and the guest VMMDev request
+     * in SMP VMs. The lock serialized this.
+     */
     RTCRITSECT mVBVALock;
     volatile uint32_t mfu32PendingVideoAccelDisable;
@@ -342 +346 @@
 
 public:
+    bool vbvaLockIsOwner(void);
+
     static int  displayTakeScreenshotEMT(Display *pDisplay, ULONG aScreenId, uint8_t **ppu8Data, size_t *pcbData, uint32_t *pu32Width, uint32_t *pu32Height);
 
@@ -369 +375 @@
     /* Functions run under VBVA lock. */
     int  videoAccelEnable(bool fEnable, VBVAMEMORY *pVbvaMemory);
-    void videoAccelFlush(void);
+    int videoAccelFlush(void);
 
 #if defined(VBOX_WITH_HGCM) && defined(VBOX_WITH_CROGL)