archive/jdk
1
0
Fork 0
mirror of https://github.com/openjdk/jdk.git synced 2025-08-28 07:14:30 +02:00
Code Issues Projects Releases Packages Wiki Activity Actions

8194406: Use Atomic::replace_if_null

Browse source 
Reviewed-by: coleenp, dholmes
This commit is contained in:
Kim Barrett 2018-01-04 18:18:18 -05:00
parent c7e601e911
commit 9e5bf18428
9 changed files with 17 additions and 18 deletions
Download patch file Download diff file Expand all files Collapse all files

2
src/hotspot/share/gc/parallel/gcTaskThread.cpp
View file

@ -77,7 +77,7 @@ GCTaskTimeStamp* GCTaskThread::time_stamp_at(uint index) {
if (_time_stamps == NULL) {
// We allocate the _time_stamps array lazily since logging can be enabled dynamically
GCTaskTimeStamp* time_stamps = NEW_C_HEAP_ARRAY(GCTaskTimeStamp, GCTaskTimeStampEntries, mtGC);
if (Atomic::cmpxchg(time_stamps, &_time_stamps, (GCTaskTimeStamp*)NULL) != NULL) {
if (!Atomic::replace_if_null(time_stamps, &_time_stamps)) {
// Someone already setup the time stamps
FREE_C_HEAP_ARRAY(GCTaskTimeStamp, time_stamps);
}