Message 138040 - Python tracker

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Author	vstinner
Recipients	exarkun, vstinner
Date	2011-06-09.23:40:57
SpamBayes Score	1.2897816e-06
Marked as misclassified	No
Message-id	<1307662858.23.0.693450989417.issue12304@psf.upfronthosting.co.za>
In-reply-to

Content
#8407 changed the wakeup fd: it now contains the signal number. pthread_sigmask() is now part of Python 3.3 (see also #8407). signalfd() has advantages over the wakeup fd (msg103326): - it is handled in the kernel, the process is not interrupted. For example, system calls cannot fail with EINTR. - it gives much more information than the signal number (see signalfd_siginfo structure) - it is also possible to have several signalfds, each with a different signal mask. set_wakeup_fd is limited to a single fd per-process.

#8407 changed the wakeup fd: it now contains the signal number. pthread_sigmask() is now part of Python 3.3 (see also #8407).

signalfd() has advantages over the wakeup fd (msg103326):

 - it is handled in the kernel, the process is not interrupted. For example, system calls cannot fail with EINTR.
 - it gives much more information than the signal number (see signalfd_siginfo structure)
 - it is also possible to have several signalfds, each with a different signal mask. set_wakeup_fd is limited to a single fd per-process.

History
Date	User	Action	Args
2011-06-09 23:40:58	vstinner	set	recipients: + vstinner, exarkun
2011-06-09 23:40:58	vstinner	set	messageid: <1307662858.23.0.693450989417.issue12304@psf.upfronthosting.co.za>
2011-06-09 23:40:57	vstinner	link	issue12304 messages
2011-06-09 23:40:57	vstinner	create