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1. JDK
2. JDK-8212663

Remove conservative at_safepoint assert when JFR writes type sets during class unloading

• Type: Enhancement
• Resolution: Fixed
• Priority: P4
• Fix Version/s: 12
• Affects Version/s: None

JFR writes type sets during class unloading. It currently asserts this is done in a safepoint. But in fact, it suffices that it is done by a single thread. This assert needs to be relaxed for concurrent class unloading.