hg: jdk8u/jdk8u-dev/hotspot: 8048556: Unnecessary GCLocker-initiated young GCs

[paul.hohensee at gmail.com]

Changeset: 9f28a4cac6d9
Author:    kbarrett
Date:      2019-07-31 14:28 -0400
URL:       https://hg.openjdk.java.net/jdk8u/jdk8u-dev/hotspot/rev/9f28a4cac6d9

8048556: Unnecessary GCLocker-initiated young GCs
Summary: Fixed recognition of unnecessary GCLocker collections.
Reviewed-by: pliden, tschatzl
Contributed-by: johnc at azul.com

! src/share/vm/gc_implementation/g1/g1CollectedHeap.cpp
! src/share/vm/gc_implementation/parallelScavenge/parallelScavengeHeap.cpp
! src/share/vm/gc_implementation/parallelScavenge/vmPSOperations.cpp
! src/share/vm/gc_implementation/shared/vmGCOperations.cpp
! src/share/vm/gc_implementation/shared/vmGCOperations.hpp
! src/share/vm/memory/gcLocker.cpp
! src/share/vm/memory/gcLocker.hpp
! src/share/vm/memory/genCollectedHeap.cpp
+ test/gc/stress/gclocker/TestExcessGCLockerCollections.java