RFR: 8229517: Support for optional asynchronous/buffered logging [v16]

[Xin Liu]

On Wed, 19 May 2021 13:14:03 GMT, Volker Simonis <simonis at openjdk.org> wrote:

>> Xin Liu has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   Implement the new discard policy: drop the incoming message.
>>   
>>   This patch also fix a bug. meta messages append to the temp logs instead
>>   of directly calling output->write_blocking(). This guranatees logsites are non-blocking.
>
> src/hotspot/share/runtime/thread.hpp line 106:
> 
>> 104: //     - WatcherThread
>> 105: //     - JfrThreadSampler
>> 106: //     - LogAsyncFlusher
> 
> I think this should be `AsyncLogWriter`

yes. thanks!

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PR: https://git.openjdk.java.net/jdk/pull/3135