Changeset 18383 in vbox for trunk/src/VBox/Devices

Timestamp:

Mar 27, 2009 12:24:05 PM (16 years ago)

Author:

vboxsync

Message:

PCNet: don't block if we can't enter the critical section from pcnetTimer()

File:

• trunk/src/VBox/Devices/Network/DevPCNet.cpp (modified) (1 diff)

trunk/src/VBox/Devices/Network/DevPCNet.cpp

@@ -3747 +3747 @@
     int         rc;
 
-    STAM_PROFILE_ADV_START(&pThis->StatTimer, a);
-    rc = PDMCritSectEnter(&pThis->CritSect, VERR_SEM_BUSY);
-    AssertReleaseRC(rc);
-
-    pcnetPollTimer(pThis);
-
-    PDMCritSectLeave(&pThis->CritSect);
-    STAM_PROFILE_ADV_STOP(&pThis->StatTimer, a);
+    /*
+     * Don't block if we cannot enter here.
+     */
+    rc = PDMR3CritSectTryEnter(&pThis->CritSect);
+    if (RT_SUCCESS(rc))
+    {
+        STAM_PROFILE_ADV_START(&pThis->StatTimer, a);
+        pcnetPollTimer(pThis);
+        PDMCritSectLeave(&pThis->CritSect);
+        STAM_PROFILE_ADV_STOP(&pThis->StatTimer, a);
+    }
 }