git: openjdk/jdk21u-dev: master: 8340547: Starting many threads can delay safepoints

[Sergey Nazarkin]

Changeset: 5306687c
Branch: master
Author:    Sergey Nazarkin <snazarki at openjdk.org>
Date:      2025-08-25 09:57:39 +0000
URL:       https://git.openjdk.org/jdk21u-dev/commit/5306687c21daf8c81a61ba78b0c6f4fe13480026

8340547: Starting many threads can delay safepoints

Reviewed-by: ogillespie, dcherepanov, phh
Backport-of: e704c055a4cf2aab77cc2b3d034f5a8b8d9e3331

! src/hotspot/share/prims/jvm.cpp
! src/hotspot/share/runtime/globals.hpp
! src/hotspot/share/runtime/mutexLocker.cpp
! src/hotspot/share/runtime/mutexLocker.hpp
! src/hotspot/share/runtime/threads.cpp