Message 103249 - Python tracker

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Author	loewis
Recipients	kristjan.jonsson, loewis, ronaldoussoren
Date	2010-04-15.20:32:58
SpamBayes Score	0.00037010407
Marked as misclassified	No
Message-id	<[email protected]>
In-reply-to	<[email protected]>

Content
> On pthreads plaforms, if the posix_sem functions aren't available > (when _POSIX_SEMAPHORES isn't defined), the python lock is > implemented with a mutex and a condition variable. This appears to > be the case on Mac OS X, for example. The problem is that this lock > does not provide fairness to threads trying to acquire it. Why do you think condition variables don't provide fairness?

> On pthreads plaforms, if the posix_sem functions aren't available
> (when _POSIX_SEMAPHORES isn't defined), the python lock is
> implemented with a mutex and a condition variable.  This appears to
> be the case on Mac OS X, for example. The problem is that this lock
> does not provide fairness to threads trying to acquire it. 

Why do you think condition variables don't provide fairness?

History
Date	User	Action	Args
2010-04-15 20:33:00	loewis	set	recipients: + loewis, ronaldoussoren, kristjan.jonsson
2010-04-15 20:32:58	loewis	link	issue8410 messages
2010-04-15 20:32:58	loewis	create