P4
It's unsafe for a thread belonging to the SuspendibleThreadSet to request VM operation, because an on-the-fly safepoint can be waiting for the requesting thread, and the requesting thread will be blocked, waiting for the next VM op to become the right one.
Add precondition to catch these cases.
Add precondition to catch these cases.
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Commit(master)
openjdk/jdk/b32be18b
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Review(master)
openjdk/jdk/24088