hg: shenandoah/jdk9/hotspot: Allow Java thread to reach safepoint during JNI critical notification. Fixes deadlock.

[roman at kennke.org]

Changeset: 19104f123dc1
Author:    rkennke
Date:      2016-07-15 12:05 +0200
URL:       http://hg.openjdk.java.net/shenandoah/jdk9/hotspot/rev/19104f123dc1

Allow Java thread to reach safepoint during JNI critical notification. Fixes deadlock.

! src/share/vm/gc/shenandoah/shenandoahJNICritical.cpp
! src/share/vm/runtime/mutexLocker.cpp