Re: SIGINT handling

[Chet Ramey]

On 9/19/15 5:31 PM, Stephane Chazelas wrote:
> 2015-09-19 16:42:28 -0400, Chet Ramey:
> [...]
>> I'm surprised you've managed to avoid the dozen or so discussions on the
>> topic.
>>
>> http://lists.gnu.org/archive/html/bug-bash/2014-03/msg00108.html
> [...]
> 
> Thanks for the links. I still think the comments on the second
> article I sent
> (http://thread.gmane.org/gmane.comp.shells.bash.bugs/24178/focus=24183)
> still hold though and from a quick read I don't see those points
> being mentioned in the past discussions (but that was a quick
> read).
> 
> I notice that you mention the race conditions have been fixed,
> but I'm still seeing some non-deterministic behaviour.

I can't reproduce this on Mac OS X and RHEL 6 and 7, the systems I have
readily available today.

The shell notes when it sees SIGINT and whether or not waitpid returns
-1/EINTR.  If the sleep exits due to SIGINT, even after the waitpid
returns -1, the shell assumes it didn't catch and handle the SIGINT and
the shell calls the trap handler.

-- 
``The lyf so short, the craft so long to lerne.'' - Chaucer
                 ``Ars longa, vita brevis'' - Hippocrates
Chet Ramey, ITS, CWRU    chet@case.edu    http://cnswww.cns.cwru.edu/~chet/