[issue12187] subprocess.wait() with a timeout uses polling on POSIX

[STINNER Victor]

STINNER Victor <victor.stinner at haypocalc.com> added the comment:

(I should not answer in this issue, but in #8407)

> > See also issue #8407 for sigtimedwait() and signalfd() in Python.
>
> You didn't commit the signalfd part?

Not yet because I would like to provide something to decode the data written into the signalfd file descriptor (msg135438), the signalfd_siginfo structure.

> Whay do you think of sigtimedwait?

It would like to expose it (msg137071, you should read sigtimedwait, not sigwaitinfo :-)). I started to work on a patch, but it requires a siginfo_t structure, and I didn't finish my patch. I will retry later.

> Expose it as-is, or just add an optional timeout option to sigwait?

I prefer thin wrappers: sigwaitinfo() is more than just a timeout argument, there is also the signal info argument.

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue12187>
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