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Adds join() and task_done() methods to track when all enqueued tasks have
been gotten and fully processed by daemon consumer threads.
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I don't agree it had a bug (see the report), so this is *not* a candidate
for backporting, but the docs were confusing and the Queue implementation
was old enough to vote.
Rewrote put/put_nowait/get/get_nowait from scratch, to use a pair of
Conditions (not_full and not_empty), sharing a common mutex. The code
is 1/4 the size now, and 6.25x easier to understand. For blocking
with timeout, we also get to reuse (indirectly) the tedious timeout
code from threading.Condition. The Full and Empty exceptions raised
by non-blocking calls are now easy (instead of nearly impossible) to
explain truthfully: Full is raised if and only if the Queue truly
is full when the non-blocking put call checks the queue size, and
similarly for Empty versus non-blocking get.
What I don't know is whether the new implementation is slower (or
faster) than the old one. I don't really care. Anyone who cares
a lot is encouraged to check that.
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* Add unittests, newsitem, and whatsnew
* Apply to Queue.py mutex.py threading.py pydoc.py and shlex.py
* Docs are forthcoming
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(Very rough.)
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Fix up a few synopses.
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Correct misuse of indexsubutem.
Describe the Queue class using {classdesc}{Queue}, not {funcdesc}{__init__}.
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checkin of myformat.sty.
Change "\renewcommand{\indexsubitem}{(...)}" to "\setindexsubitem{(...)}"
everywhere.
Some other minor nits that I happened to come across.
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Makefile: Add dependency on libqueue.tex
lib.tex: Place the libqueue.tex documentation just after libthread.tex
since Queue depends on thread support in Python.
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