[issue29603] More informative Queue class: new method that returns number of unfinished tasks

[slytomcat]

slytomcat added the comment:

One more problem that adjusting of number of threads is performed exactly after placing the new task in the queue. In in some cases we can find that qsuze <> 0 but it doesn't mean that there is no idle threads. It can be equal to 1 (just queued task) as no threads manage to get it yet (don't forgot about GIL).

So even qsuze <> 0 dosn't mean that we need to create a new thread.

But (unfinished() <= num_threads) works perfect in this case also.

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue29603>
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