hg: shenandoah/jdk9/hotspot: Don't scan or update codecache during GC pause. Instead, do it concurrently while grabbing the CodeCache_lock.

[roman at kennke.org]

Changeset: 734dc0187873
Author:    rkennke
Date:      2016-07-08 18:03 +0200
URL:       http://hg.openjdk.java.net/shenandoah/jdk9/hotspot/rev/734dc0187873

Don't scan or update codecache during GC pause. Instead, do it concurrently while grabbing the CodeCache_lock.

! src/share/vm/gc/shenandoah/shenandoahConcurrentMark.cpp
! src/share/vm/gc/shenandoah/shenandoahConcurrentMark.hpp
! src/share/vm/gc/shenandoah/shenandoahRootProcessor.cpp