git: openjdk/jdk20: 8298377: JfrVframeStream causes deadlocks in ZGC

[Stefan Karlsson]

Changeset: 1330d4ea
Author:    Stefan Karlsson <stefank at openjdk.org>
Date:      2023-02-01 13:19:26 +0000
URL:       https://git.openjdk.org/jdk20/commit/1330d4eaa54790b468f69e61574b3c5d522be120

8298377: JfrVframeStream causes deadlocks in ZGC

Backport-of: 453dbd12ee42731d7ebfd1a856338099429277c8

! src/hotspot/share/jfr/periodic/sampling/jfrThreadSampler.cpp
! src/hotspot/share/jfr/recorder/stacktrace/jfrStackTrace.cpp