git: openjdk/jdk21u-dev: master: 8321815: Shenandoah: gc state should be synchronized to java threads only once per safepoint

[Aleksey Shipilev]

Changeset: ad5a0878
Author:    William Kemper <wkemper at openjdk.org>
Committer: Aleksey Shipilev <shade at openjdk.org>
Date:      2024-03-13 16:08:48 +0000
URL:       https://git.openjdk.org/jdk21u-dev/commit/ad5a0878db6145fe041ef47be3f06ad734556403

8321815: Shenandoah: gc state should be synchronized to java threads only once per safepoint

Reviewed-by: phh
Backport-of: 808a03927c153581cbece93a4f5a4f8242b61ef5

! src/hotspot/share/gc/shenandoah/shenandoahHeap.cpp
! src/hotspot/share/gc/shenandoah/shenandoahHeap.hpp
! src/hotspot/share/gc/shenandoah/shenandoahVMOperations.cpp
! src/hotspot/share/gc/shenandoah/shenandoahVMOperations.hpp
! src/hotspot/share/gc/shenandoah/shenandoahVerifier.cpp