Message 103182 - Python tracker

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In-reply-to
Author	exarkun
Recipients	exarkun
Date	2010年04月15日.05:00:32
SpamBayes Score	6.227074e-07
Marked as misclassified	No
Message-id	<1271307639.03.0.656473126494.issue8407@psf.upfronthosting.co.za>

Content
Linux offers the signalfd syscall since 2.6.22 (with minor changes afterwards). This call allows signals to be handled as bytes read out of a file descriptor, rather than as interruptions to the flow of a program. Quite usefully, this file descriptor can be select()'d on (or poll()'d, epoll()'d, etc) alongside other "normal" file descriptors. In order to effectively use signalfd(), the signals in question must be blocked, though. So it makes sense to expose sigprocmask(2) at the same time, in order to allow this blocking to be set up.

Content

Linux offers the signalfd syscall since 2.6.22 (with minor changes afterwards). This call allows signals to be handled as bytes read out of a file descriptor, rather than as interruptions to the flow of a program. Quite usefully, this file descriptor can be select()'d on (or poll()'d, epoll()'d, etc) alongside other "normal" file descriptors.
In order to effectively use signalfd(), the signals in question must be blocked, though. So it makes sense to expose sigprocmask(2) at the same time, in order to allow this blocking to be set up.

History
Date	User	Action	Args
2010年04月15日 05:00:40	exarkun	set	recipients: + exarkun
2010年04月15日 05:00:39	exarkun	set	messageid: <1271307639.03.0.656473126494.issue8407@psf.upfronthosting.co.za>
2010年04月15日 05:00:35	exarkun	link	issue8407 messages
2010年04月15日 05:00:32	exarkun	create

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