[Geany-Devel] Changing terminate signal for stopping executing programs

[Lex Trotman]

On 11 March 2013 14:58, Chow Loong Jin <hyperair at gmail.com> wrote:
> On 11/03/2013 10:18, Lex Trotman wrote:
>> Hi All,
>> [...]
>> My understanding of Unix/Linux signals is that the comment above is
>> wrong and always has been wrong, a signal sent to a child process by a
>> parent process does not get delivered to the parent.
>>
>> I don't know if anybodys memory is good enough to remember why the
>> comment was thought to be correct (it was 2006 when it was committed).
>
> Perhaps it was a misunderstanding -- signals sent to the parent will hit the
> child process, but not the other way around. (If it did, kill %1 in your shell
> would kill your shell as well.)
>
>> For me simply using SIGTERM instead of SIGQUIT works fine, but does
>> anybody have any more insight, since we don't want to have Geany stop
>> unexpectedly when a user stops their running program.
>
> How about SIGINT, and failing which, notifying the user that the program refuses
> to stop, and allowing for SIGTERM or SIGKILL?

Well, sigterm is the canonical terminate signal (it is called
SIG**TERM** after all :).

Some programs catch SIGTERM so they can terminate nicely like closing
files properly, so its a good idea to use it.

One day someone will re-write Geany's terminate handler to be legal
and Geany will do the same :)

Cheers
Lex

>
> --
> Kind regards,
> Loong Jin
>
>
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