hg: jdk/jdk14: 8235390: JfrEmergencyDump::on_vm_shutdown crashes

[markus.gronlund at oracle.com]

Changeset: c86d2493d1a8
Author:    mgronlun
Date:      2019-12-20 16:04 +0100
URL:       https://hg.openjdk.java.net/jdk/jdk14/rev/c86d2493d1a8

8235390: JfrEmergencyDump::on_vm_shutdown crashes
Reviewed-by: egahlin

! src/hotspot/share/jfr/leakprofiler/checkpoint/eventEmitter.cpp
! src/hotspot/share/jfr/leakprofiler/leakProfiler.cpp
! src/hotspot/share/jfr/recorder/service/jfrRecorderService.cpp
! src/hotspot/share/jfr/recorder/service/jfrRecorderService.hpp
! src/hotspot/share/runtime/mutexLocker.cpp