On Wed, 19 Jan 2022 07:15:24 GMT, David Holmes <dhol...@openjdk.org> wrote:

>> This is in the signal handler. Is it safe to print message or do something 
>> complex?
>
> I would not print anything here, first because it is in the signal handler 
> and secondly I don't think it is needed. No real thread dump usages are going 
> to hit a VM that hasn't initialized yet IMO.

> This is in the signal handler. Is it safe to print message or do something 
> complex?

raw write to stdout should be fine I think.

>I would not print anything here, first because it is in the signal handler and 
>secondly I don't think it is needed. No real thread dump usages are going to 
>hit a VM that hasn't initialized yet IMO.

Might be nice for the user to know why his jcmd or kill -3 gets ignored though.

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PR: https://git.openjdk.java.net/jdk/pull/7003

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