hg: jdk/sandbox: 8048556: Unnecessary GCLocker-initiated young GCs

[chris.hegarty at oracle.com]

Changeset: 8d3886985964
Author:    kbarrett
Date:      2019-07-31 14:28 -0400
URL:       https://hg.openjdk.java.net/jdk/sandbox/rev/8d3886985964

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

! src/hotspot/share/gc/g1/g1CollectedHeap.cpp
! src/hotspot/share/gc/parallel/parallelScavengeHeap.cpp
! src/hotspot/share/gc/parallel/psVMOperations.cpp
! src/hotspot/share/gc/shared/gcLocker.cpp
! src/hotspot/share/gc/shared/gcLocker.hpp
! src/hotspot/share/gc/shared/gcVMOperations.hpp
! src/hotspot/share/gc/shared/genCollectedHeap.cpp
+ test/hotspot/jtreg/gc/stress/gclocker/TestExcessGCLockerCollections.java