[Bug runtime/6030] stap, staprun, stapio interaction quirks: stale module left unloaded

[fche at redhat dot com]

------- Additional Comments From fche at redhat dot com  2008-07-10 17:04 -------
(In reply to comment #9)
> The signal(SIG_CHLD, SIG_IGN) would result in the STAP process ignoring the
> SIG_CHLD signal. Wont this result in the stap process running forever, waiting
> for an explicit signal?. In case of the stapgui i want to terminate the stap
> process, and along with it the stapio process. 

Could you use   kill (SIGTERM, - stap_pid)  so you broadcast the signal
to the process group?

> I was planning to change stap's  signal handler  to pass the signal to the
> process group before exiting. Is there any reason why we would not want to do
> that?. 

I'm not sure that is legal from within a signal handler proper, but as a
part of stap's exit, one could do a   kill (SIGTERM, 0)


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http://sourceware.org/bugzilla/show_bug.cgi?id=6030

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