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8276201: Shenandoah: Race results degenerated GC to enter wrong entry point

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Reviewed-by: shade
This commit is contained in:
Zhengyu Gu 2021-11-01 12:17:16 +00:00
parent 5bb1992b84
commit dbf5100dd7
1 changed files with 4 additions and 2 deletions
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6
src/hotspot/share/gc/shenandoah/shenandoahDegeneratedGC.cpp
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@ -113,8 +113,10 @@ void ShenandoahDegenGC::op_degenerated() {
op_mark();
case _degenerated_mark:
// No fallthrough. Continue mark, handed over from concurrent mark
if (_degen_point == ShenandoahDegenPoint::_degenerated_mark) {
// No fallthrough. Continue mark, handed over from concurrent mark if
// concurrent mark has yet completed
if (_degen_point == ShenandoahDegenPoint::_degenerated_mark &&
heap->is_concurrent_mark_in_progress()) {
op_finish_mark();
}
assert(!heap->cancelled_gc(), "STW mark can not OOM");