RFR: 8273608: Deadlock when jcmd of OnError attaches to itself [v4]

[Xin Liu]

On Tue, 5 Oct 2021 18:30:31 GMT, Thomas Stuefe <stuefe at openjdk.org> wrote:

>> Xin Liu has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   Cleanup: remove a statment of debugging.
>
> test/hotspot/jtreg/runtime/ErrorHandling/TestOutOfMemoryErrorFromNIO.java line 59:
> 
>> 57:         StringBuilder after = new StringBuilder(jcmd);
>> 58:         after.append(" %p");
>> 59:         after.append(" GC.heap_dump a.hprof");
> 
> Could be probably simplified to:
> 
> String jcmd = JDKToolFinder.getJDKTool("jcmd");
> String before = jcmd + " %p Thread.print";
> String after = jcmd + " %p GC.heap_dump a.hprof;

make sense. it's better.

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PR: https://git.openjdk.java.net/jdk/pull/5590