Please, review the fix for:
https://bugs.openjdk.java.net/browse/JDK-8028126
Open webrev:
http://cr.openjdk.java.net/~sspitsyn/webrevs/2013/hotspot/8028126-JVMTI-HS101.1/
Summary:
This is a fix for a possible race condition between the
VMOp_GetCurrentLocation
reaching a safepoint and target debuggee thread exiting from Java
execution.
The fix is to recheck the existence of the last Java frame at a safepoint
and clean the thread current location if the thread has been already
exited from Java.
I'm suggesting to fix this in hs25/JDK 8.
It is important to fix as it is a P2 bug and the risk of fixing it is
low.
But need reviewers to share opinions on this.
I'll add the 8-critical-request label if reviewers agree with the above.
Testing:
The test nsk/jvmti/scenarios/hotswap/HS101/hs101t006 that was
originally failed.
In progress: nsk.jvmti, nsk.jdi, nsk.jdwp
Thanks,
Serguei
