hg: jdk/sandbox: 8205921: Optimizing best-of-2 work stealing queue selection

[chris.hegarty at oracle.com]

Changeset: 0538a5cdb474
Author:    zgu
Date:      2018-08-03 11:06 +0200
URL:       http://hg.openjdk.java.net/jdk/sandbox/rev/0538a5cdb474

8205921: Optimizing best-of-2 work stealing queue selection
Summary: Bias towards stealing from queues that we recently successfully stole from to decrease the number of unsuccessful steal attempts.
Reviewed-by: eosterlund, kbarrett
Contributed-by: Zhengyu Gu <zgu at redhat.com>, Thomas Schatzl <thomas.schatzl at oracle.com>

! src/hotspot/share/gc/cms/concurrentMarkSweepGeneration.cpp
! src/hotspot/share/gc/cms/concurrentMarkSweepGeneration.hpp
! src/hotspot/share/gc/cms/parNewGeneration.cpp
! src/hotspot/share/gc/cms/parNewGeneration.hpp
! src/hotspot/share/gc/g1/g1ConcurrentMark.cpp
! src/hotspot/share/gc/g1/g1ConcurrentMark.hpp
! src/hotspot/share/gc/g1/g1FullGCMarker.cpp
! src/hotspot/share/gc/g1/g1ParScanThreadState.cpp
! src/hotspot/share/gc/g1/g1ParScanThreadState.hpp
! src/hotspot/share/gc/g1/g1ParScanThreadState.inline.hpp
! src/hotspot/share/gc/parallel/pcTasks.cpp
! src/hotspot/share/gc/parallel/psCompactionManager.hpp
! src/hotspot/share/gc/parallel/psCompactionManager.inline.hpp
! src/hotspot/share/gc/parallel/psPromotionManager.hpp
! src/hotspot/share/gc/parallel/psPromotionManager.inline.hpp
! src/hotspot/share/gc/parallel/psTasks.cpp
! src/hotspot/share/gc/shared/taskqueue.cpp
! src/hotspot/share/gc/shared/taskqueue.hpp
! src/hotspot/share/gc/shared/taskqueue.inline.hpp