hg: jdk8u/jdk8u-dev/hotspot: 8138966: Intermittent SEGV running ParallelGC

[thomas.schatzl at oracle.com]

Changeset: 110735ab93ec
Author:    aph
Date:      2015-11-04 13:38 +0100
URL:       http://hg.openjdk.java.net/jdk8u/jdk8u-dev/hotspot/rev/110735ab93ec

8138966: Intermittent SEGV running ParallelGC
Summary: Add necessary memory fences so that the parallel threads are unable to observe partially filled block tables.
Reviewed-by: tschatzl

! src/share/vm/gc_implementation/parallelScavenge/psParallelCompact.hpp