Calling JavaThread::thread_from_jni_environment for a terminated thread in AsyncGetCallTrace might cause the acquisition of a lock, making AsyncGetCallTrace non-signal-safe.
AsyncGetCallTrace can only be called for the current threads (there are asserts for that), therefore using JavaThread::current directly and checking the termination status is semantically equivalent. ------------- Commit messages: - Use JavaThread::current_or_null - Do not call JavaThread::thread_from_jni_environment Changes: https://git.openjdk.java.net/jdk/pull/8446/files Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=8446&range=00 Issue: https://bugs.openjdk.java.net/browse/JDK-8285794 Stats: 4 lines in 1 file changed: 0 ins; 1 del; 3 mod Patch: https://git.openjdk.java.net/jdk/pull/8446.diff Fetch: git fetch https://git.openjdk.java.net/jdk pull/8446/head:pull/8446 PR: https://git.openjdk.java.net/jdk/pull/8446
