hg: shenandoah/jdk9/hotspot: Scan code roots concurrently without requiring the CodeCache_lock.

[roman at kennke.org]

Changeset: 3ee35ed3acb6
Author:    rkennke
Date:      2016-07-13 12:49 +0200
URL:       http://hg.openjdk.java.net/shenandoah/jdk9/hotspot/rev/3ee35ed3acb6

Scan code roots concurrently without requiring the CodeCache_lock.

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