hg: hsx/hotspot-rt/hotspot: 8023457: Event based tracing framework needs a mutex for thread groups

[markus.gronlund at oracle.com]

Changeset: 739c309fd729
Author:    mgronlun
Date:      2013-08-23 10:36 +0200
URL:       http://hg.openjdk.java.net/hsx/hotspot-rt/hotspot/rev/739c309fd729

8023457: Event based tracing framework needs a mutex for thread groups
Reviewed-by: acorn, sla

! src/share/vm/runtime/mutexLocker.cpp
! src/share/vm/runtime/mutexLocker.hpp