Message 195360 - Python tracker

Message195360

Author	pitrou
Recipients	christian.heimes, hynek, jcea, neologix, pitrou, tarek, vstinner
Date	2013-08-16.16:48:31
SpamBayes Score	-1.0
Marked as misclassified	Yes
Message-id	<1376671703.2510.3.camel@fsol>
In-reply-to	<520E56B2.70209@cheimes.de>

Content
> Am 16.08.2013 18:24, schrieb Charles-François Natali: > > Well, first we'll have to make the code thread-safe, if we want to > > keep a persistent FD open. Which means we'll have to add a lock, which > > is likely to reduce concurrency, and overall throughput. > > Why locking? /dev/urandom is a pseudo char device. You can have multiple > readers on the same fd without any locking. You must put a lock around the open() call, though, to avoid calling it several times and losing an fd.

Content

> Am 16.08.2013 18:24, schrieb Charles-François Natali:
> > Well, first we'll have to make the code thread-safe, if we want to
> > keep a persistent FD open. Which means we'll have to add a lock, which
> > is likely to reduce concurrency, and overall throughput.
> 
> Why locking? /dev/urandom is a pseudo char device. You can have multiple
> readers on the same fd without any locking.

You must put a lock around the open() call, though, to avoid calling it
several times and losing an fd.

History
Date	User	Action	Args
2013-08-16 16:48:31	pitrou	set	recipients: + pitrou, jcea, vstinner, christian.heimes, tarek, neologix, hynek
2013-08-16 16:48:31	pitrou	link	issue18756 messages
2013-08-16 16:48:31	pitrou	create