hg: jdk7/hotspot-rt/hotspot: 6814943: getcpool001 catches more than one JvmtiThreadState problem

[keith.mcguigan at oracle.com]

Changeset: db2b0f8c1cef
Author:    kamg
Date:      2011-01-11 10:06 -0500
URL:       http://hg.openjdk.java.net/jdk7/hotspot-rt/hotspot/rev/db2b0f8c1cef

6814943: getcpool001 catches more than one JvmtiThreadState problem
Summary: Mark field volatile, use membars, and change access order to close race
Reviewed-by: dcubed, dholmes

! src/share/vm/prims/jvmtiEventController.cpp
! src/share/vm/prims/jvmtiExport.cpp
! src/share/vm/runtime/thread.cpp
! src/share/vm/runtime/thread.hpp