hg: shenandoah/jdk9/hotspot: Revert to processing CodeCache oops using only a single GC thread. Appears to be faster on many-core machines.

[roman at kennke.org]

Changeset: 6ccad0ef1c66
Author:    rkennke
Date:      2016-06-21 18:35 +0200
URL:       http://hg.openjdk.java.net/shenandoah/jdk9/hotspot/rev/6ccad0ef1c66

Revert to processing CodeCache oops using only a single GC thread. Appears to be faster on many-core machines.

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