RFR 8184732: Deadlock detection improvements for 'special' locks
coleen.phillimore at oracle.com
coleen.phillimore at oracle.com
Fri Sep 27 18:20:34 UTC 2019
Summary: Assert that special ranked locks cannot safepoint and
allow_vm_block and remove locks from the exceptional lock
list in no_safepoint_verifier.
The Compile_lock shouldn't be used by the VM thread or it would
deadlock. Implemented most of the suggestions in the RFE. Many have
already been cleaned up.
Tested with tier1 on all Oracle platforms, and tier2-6 on linux-x64, and
new test.
open webrev at http://cr.openjdk.java.net/~coleenp/2019/8184732.01/webrev
bug link https://bugs.openjdk.java.net/browse/JDK-8184732
Thanks,
Coleen
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