hg: jdk8u/jdk8u-dev/hotspot: 8034249: need more workarounds for suspend equivalent condition issue

[serguei.spitsyn at oracle.com]

Changeset: 96a7391e620a
Author:    sspitsyn
Date:      2017-01-15 02:07 -0800
URL:       http://hg.openjdk.java.net/jdk8u/jdk8u-dev/hotspot/rev/96a7391e620a

8034249: need more workarounds for suspend equivalent condition issue
Summary: Collect data at safepoint, do not rely on thread suspension
Reviewed-by: dcubed, dholmes

! src/share/vm/prims/jvmtiEnv.cpp
! src/share/vm/prims/jvmtiEnvBase.hpp