RFR: 8234262: Unmask SIGQUIT in a child process [v3]

[Thomas Stuefe]

On Thu, 22 Sep 2022 22:41:21 GMT, Roger Riggs <rriggs at openjdk.org> wrote:

>> Clear the signal mask of the child when launching with posix_spawn.
>> 
>> SIGQUIT signals are handled on non-Java Threads by the VM.
>> For Java threads the signal mask blocks SIGQUIT.  
>> The ProcessBuilder uses posix_spawn on all platforms to create new processes.
>> Without a specific request, the child process inherits the signal masks from the parent.
>
> Roger Riggs has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Move clearing of the signal mask to jspawnhelper so the launched
>   process gets a clear signal mask.

+1

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Marked as reviewed by stuefe (Reviewer).

PR: https://git.openjdk.org/jdk/pull/10379