RFR: 8256302: releasing oopStorage when deflating allows for faster deleting
Daniel D. Daugherty
dcubed at openjdk.org
Fri Dec 2 21:27:19 UTC 2022
On Wed, 30 Nov 2022 22:02:42 GMT, David Holmes <dholmes at openjdk.org> wrote:
>> Releasing ObjectMonitor oopStorage earlier when deflating allows ObjectMonitor
>> deletion by a JavaThread (usually the MonitorDeflationThread) to happen while a
>> ThreadBlockInVM helper is in place. This should improve time-to-safepoint.
>
> src/hotspot/share/runtime/synchronizer.cpp line 1560:
>
>> 1558: }
>> 1559: // Make the calling JavaThread blocked (safepoint safe) while we
>> 1560: // free the ObjectMonitors:
>
> Suggestion: add "so we don't delay safepoints whilst doing that:"
I'll fix that.
-------------
PR: https://git.openjdk.org/jdk/pull/11296
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