hg: shenandoah/jdk9/hotspot: Optimized root scan: we don't need to take care of concurrent updates. Also, skip some marking code that's only needed for class unloading.

[roman at kennke.org]

Changeset: 80373c0ddf88
Author:    rkennke
Date:      2015-10-28 18:58 +0100
URL:       http://hg.openjdk.java.net/shenandoah/jdk9/hotspot/rev/80373c0ddf88

Optimized root scan: we don't need to take care of concurrent updates. Also, skip some marking code that's only needed for class unloading.

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