Charles-Francois Natali <[email protected]> added the comment:
> There is something interesting in this output: the test uses a subprocess and
> we only have the traceback of the parent. It may be nice to have the trace of
> the child process. It might be possible by sending a signal to the child
> process (but how can we get the list of the child processes in a C signal
> handler?).
I don't think you can find that, but you could send a signal to the whole
process group:
if (getpgrp() == getpid()) {
kill(-getpgrp(), <signal>);
}
The getpgrp() == getpid() makes sure that you'll only do that if the current
process is the group leader (and it's async-safe). You'll probably want to
block <signal> in the parent's handler first.
Note that it won't work if your child process calls setsid(), of course
(start_new_session argument to Popen).
----------
nosy: +neologix
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<http://bugs.python.org/issue11727>
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