git: openjdk/jdk21u-dev: master: 8319876: Reduce memory consumption of VM_ThreadDump::doit

[Jie Fu]

Changeset: 342ae649
Author:    Long Yang <lyang at openjdk.org>
Committer: Jie Fu <jiefu at openjdk.org>
Date:      2024-04-03 01:27:52 +0000
URL:       https://git.openjdk.org/jdk21u-dev/commit/342ae64964a82fd12abdf736dbefa83371c7f762

8319876: Reduce memory consumption of VM_ThreadDump::doit

Reviewed-by: phh
Backport-of: 8ec6b8de3bb3d7aeebdcb45d761b18cce3bab75e

! src/hotspot/share/runtime/vmOperations.cpp
! src/hotspot/share/services/threadService.cpp