Message 139215 - Python tracker

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In-reply-to
Author	sbt
Recipients	brian.curtin, jnoller, pitrou, sbt, tim.golden
Date	2011年06月26日.20:43:35
SpamBayes Score	0.00032196965
Marked as misclassified	No
Message-id	<1309121016.23.0.180947173576.issue12328@psf.upfronthosting.co.za>

Content
I have noticed a few more problems. * Because poll() isn't thread safe on Windows, neither is Queue.empty(). Since a queue's pipe will never contain empty messages, this can be fixed easily by using (a wrapper for) win32.PeekNamedPipe(). * PipeListener/PipeClient have not been updated to use overlapped I/O. * If more than one process is to read from a pipe connection then (even with proper synchronisation) we cannot safely use poll() since it can leave a partial message in the pipe.

Content

I have noticed a few more problems.
* Because poll() isn't thread safe on Windows, neither is Queue.empty(). Since a queue's pipe will never contain empty messages, this can be fixed easily by using (a wrapper for) win32.PeekNamedPipe().
* PipeListener/PipeClient have not been updated to use overlapped I/O.
* If more than one process is to read from a pipe connection then (even with proper synchronisation) we cannot safely use poll() since it can leave a partial message in the pipe.

History
Date	User	Action	Args
2011年06月26日 20:43:36	sbt	set	recipients: + sbt, pitrou, tim.golden, jnoller, brian.curtin
2011年06月26日 20:43:36	sbt	set	messageid: <1309121016.23.0.180947173576.issue12328@psf.upfronthosting.co.za>
2011年06月26日 20:43:35	sbt	link	issue12328 messages
2011年06月26日 20:43:35	sbt	create

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