8340547: Starting many threads can delay safepoints#1365

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snazarkin wants to merge 3 commits intoopenjdk:masterfrom snazarkin:JDK-8340547_backport

+15-3

Commits on Jan 24, 2025

Backport e704c055a4cf2aab77cc2b3d034f5a8b8d9e3331
Sergey Nazarkin
committed
Fix absence of ConditionalMutexLocker
Sergey Nazarkin
committed

Commits on Jan 28, 2025

NULL -> nullptr
Sergey Nazarkin
committed