hg: shenandoah/jdk9/hotspot: 4 new changesets

[ashipile at redhat.com]

Changeset: f8aa59bf8732
Author:    shade
Date:      2018-01-26 17:56 +0100
URL:       http://hg.openjdk.java.net/shenandoah/jdk9/hotspot/rev/f8aa59bf8732

[backport] Conditionalize PerfDataMemorySize on enabled heap sampling

! src/share/vm/runtime/arguments.cpp

Changeset: 240af491d9b5
Author:    rkennke
Date:      2018-01-30 12:20 +0100
URL:       http://hg.openjdk.java.net/shenandoah/jdk9/hotspot/rev/240af491d9b5

[backport] Make major GC phases exclusive from each other

! src/share/vm/gc/shenandoah/shenandoahHeap.cpp
! src/share/vm/gc/shenandoah/shenandoahHeap.hpp
! src/share/vm/gc/shenandoah/shenandoahHeap.inline.hpp
! src/share/vm/gc/shenandoah/shenandoahSharedVariables.hpp
! src/share/vm/opto/shenandoahSupport.cpp

Changeset: 869aee37dbf1
Author:    shade
Date:      2018-01-31 12:29 +0100
URL:       http://hg.openjdk.java.net/shenandoah/jdk9/hotspot/rev/869aee37dbf1

[backport] Single GCTimer shared by all operations

! src/share/vm/gc/shenandoah/shenandoahConcurrentThread.cpp
! src/share/vm/gc/shenandoah/shenandoahHeap.cpp
! src/share/vm/gc/shenandoah/shenandoahMarkCompact.cpp
! src/share/vm/gc/shenandoah/shenandoahMarkCompact.hpp
! src/share/vm/gc/shenandoah/shenandoahUtils.cpp
! src/share/vm/gc/shenandoah/shenandoahUtils.hpp

Changeset: b518fc5c3c33
Author:    roland
Date:      2018-01-31 16:17 +0100
URL:       http://hg.openjdk.java.net/shenandoah/jdk9/hotspot/rev/b518fc5c3c33

[backport] fix -ShenandoahWriteBarrierMemBar and loop unswitching

! src/share/vm/opto/shenandoahSupport.cpp