Message 102850 - Python tracker

Message102850

Author	pitrou
Recipients	amcnabb, georg.brandl, neologix, pitrou, pts, tim.peters
Date	2010-04-11.16:14:00
SpamBayes Score	0.0005620681
Marked as misclassified	No
Message-id	<1271002443.27.0.655400479927.issue5315@psf.upfronthosting.co.za>
In-reply-to

Content
Thanks for the detailed analysis, Charles-François. > Finally, I think that the documentation should be rephrased: Yes, I think so. > Furthermore, under Linux 2.6 and NPTL, getpid() returns the main thread > PID even from another thread. Yes, those threads belong to the same process. But as mentioned, signals are a rather fragile inter-process communication device; just use a specific file descriptor. And if you still wanna use signals, there's set_wakeup_fd(): http://docs.python.org/library/signal.html#signal.set_wakeup_fd

Content

Thanks for the detailed analysis, Charles-François.

> Finally, I think that the documentation should be rephrased:

Yes, I think so.

> Furthermore, under Linux 2.6 and NPTL, getpid() returns the main thread
> PID even from another thread.

Yes, those threads belong to the same process.

But as mentioned, signals are a rather fragile inter-process communication device; just use a specific file descriptor.
And if you still wanna use signals, there's set_wakeup_fd():
http://docs.python.org/library/signal.html#signal.set_wakeup_fd

History
Date	User	Action	Args
2010-04-11 16:14:03	pitrou	set	recipients: + pitrou, tim.peters, georg.brandl, amcnabb, pts, neologix
2010-04-11 16:14:03	pitrou	set	messageid: <1271002443.27.0.655400479927.issue5315@psf.upfronthosting.co.za>
2010-04-11 16:14:01	pitrou	link	issue5315 messages
2010-04-11 16:14:01	pitrou	create