git: openjdk/jdk: 8315373: Change VirtualThread to unmount after freezing, re-mount before thawing

[Alan Bateman]

Changeset: 9a83d558
Author:    Alan Bateman <alanb at openjdk.org>
Date:      2023-09-10 14:57:40 +0000
URL:       https://git.openjdk.org/jdk/commit/9a83d55887e5e3a0a2e1e020c6ccb91604672358

8315373: Change VirtualThread to unmount after freezing, re-mount before thawing

Reviewed-by: pchilanomate, mgronlun, sspitsyn

! src/hotspot/share/jfr/recorder/stacktrace/jfrStackTrace.cpp
! src/hotspot/share/jfr/support/jfrThreadLocal.cpp
! src/java.base/share/classes/java/lang/VirtualThread.java