Changeset 80530 in vbox

Timestamp:

Sep 1, 2019 11:03:08 PM (6 years ago)

Author:

vboxsync

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

133037

Message:

IPRT/semmutex-r0drv-nt.cpp: Fixed is-owned check. bugref:9218

Location:

trunk

Files:

• include/iprt/semaphore.h (modified) (2 diffs)
• src/VBox/Runtime/r0drv/nt/semmutex-r0drv-nt.cpp (modified) (1 diff)

trunk/include/iprt/semaphore.h

@@ -663 +663 @@
  *
  * @remarks The fast mutexes has sideeffects on IRQL on Windows hosts.  So use
- *          with care and test on windows with driver verifier.
+ *          with care and test on windows with the driver verifier enabled.
  *
  * @{ */
@@ -689 +689 @@
 /**
  * Request ownership of a fast mutex semaphore.
- *
- * The same thread may request a mutex semaphore multiple times,
- * a nested counter is kept to make sure it's released on the right
- * RTSemMutexRelease() call.
  *
  * @returns iprt status code.

trunk/src/VBox/Runtime/r0drv/nt/semmutex-r0drv-nt.cpp

@@ -231 +231 @@
     return pThis->Mutex && pThis->Mutex->Owner != NULL;
 #else
-    return KeReadStateMutex(&pThis->Mutex) == 1;
-#endif
-}
-
+    return KeReadStateMutex(&pThis->Mutex) == 0;
+#endif
+}
+