git: openjdk/jdk: 8273559: Shenandoah: Shenandoah should support multi-threaded heap dump

[Zhengyu Gu]

Changeset: 8132bfd2
Author:    Zhengyu Gu <zgu at openjdk.org>
Date:      2021-09-15 13:10:13 +0000
URL:       https://git.openjdk.java.net/jdk/commit/8132bfd23f2f7fb52e502a3e6fe488fbdb537df0

8273559: Shenandoah: Shenandoah should support multi-threaded heap dump

Reviewed-by: shade, rkennke, sgehwolf

! src/hotspot/share/gc/shenandoah/shenandoahConcurrentGC.cpp
! src/hotspot/share/gc/shenandoah/shenandoahHeap.cpp
! src/hotspot/share/gc/shenandoah/shenandoahRootProcessor.cpp
! src/hotspot/share/gc/shenandoah/shenandoahRootProcessor.hpp
! src/hotspot/share/gc/shenandoah/shenandoahRootProcessor.inline.hpp
+ test/hotspot/jtreg/gc/shenandoah/TestJcmdHeapDump.java