RFR: 8255964: Add jcmd Thread.print to jtreg timeout handler

[Nils Eliasson]

On Fri, 6 Nov 2020 15:53:35 GMT, Igor Ignatyev <iignatyev at openjdk.org> wrote:

>> This patch adds jcmd Thread.print to the jtreg timeout handler.
>> 
>> Please review.
>
> Hi Nils,
> 
> It looks alright, but could you please elaborate on why we need it when there is already `jstack` action?
> 
> — Igor

They have the same output - I didn't realize that. But it would be nice to add the extended output - so I am updating the PR.

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PR: https://git.openjdk.java.net/jdk/pull/1080