RFR: 8262454: Handshake timeout improvements, single target, kill unfinished thread

[Robbin Ehn]

On Mon, 8 Mar 2021 22:40:05 GMT, Patricio Chilano Mateo <pchilanomate at openjdk.org> wrote:

> Looks good!

Thanks!

> test/hotspot/jtreg/runtime/handshake/HandshakeTimeoutTest.java line 83:
> 
>> 81:             int i = 0;
>> 82:             while (true) {
>> 83:                 i++;
> 
> Are we relying on the fact that the timeout is small (1ms) and so at some point one of the HandshakeALotClosure operations should timeout? 
> Otherwise you could do as in TestAbortVMOnSafepointTimeout.java and use "wb.waitUnsafe(waitTime)" so that it will timeout right away.

Yes, good, thanks, I'll do that! (funny I think I added waitUnsafe but didn't remember that :) )

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PR: https://git.openjdk.java.net/jdk/pull/2743