hg: jdk10/hs/hotspot: 8180932: Parallelize safepoint cleanup

[robbin.ehn at oracle.com]

Changeset: a3b8c747b6bf
Author:    rkennke
Date:      2017-07-07 12:49 +0200
URL:       http://hg.openjdk.java.net/jdk10/hs/hotspot/rev/a3b8c747b6bf

8180932: Parallelize safepoint cleanup
Summary: Provide infrastructure to do safepoint cleanup tasks using parallel worker threads
Reviewed-by: dholmes, rehn, dcubed, thartmann

! src/share/vm/code/nmethod.hpp
! src/share/vm/gc/shared/collectedHeap.hpp
! src/share/vm/runtime/safepoint.cpp
! src/share/vm/runtime/safepoint.hpp
! src/share/vm/runtime/sweeper.cpp
! src/share/vm/runtime/sweeper.hpp
! src/share/vm/runtime/synchronizer.cpp
! src/share/vm/runtime/synchronizer.hpp
! src/share/vm/runtime/thread.cpp
! src/share/vm/runtime/thread.hpp
! src/share/vm/runtime/vmStructs.cpp
! test/runtime/logging/SafepointCleanupTest.java