[Patches] [ python-Patches-1454452 ] 2 Tools for easy inter-thread communication->Queue, threading

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Patches item #1454452, was opened at 2006-03-20 11:46
Message generated for change (Settings changed) made by gbrandl
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Category: Library (Lib)
Group: Python 2.5
Status: Open
Resolution: None
Priority: 5
Submitted By: kxroberto (kxroberto)
>Assigned to: Raymond Hettinger (rhettinger)
Summary: 2 Tools for easy inter-thread communication->Queue,threading

Initial Comment:
Using bare Queue.Queue in an inter-process manner by
passing data is often tedious low-level style and
overkill and leads to non-cohesive style of coding.

Also threading up to now doesn't support a simply
framework for non-blocking call execution _with_
result/end - a frequent need in GUI programming and
easy load balancing for jerky resources.

The attachment contains 2 tools for that: CallQueue and
BackgroundCall. 

I think they fit well into the standard Python (2.5) lib.

The attachment is in the form of a standalone Python
module and can be tested directly, the 2 things can be
easily copied to the target modules Queue / threading.


Robert


PS: fast atomic list.append / list.pop(0) / obj.var=..
 assumed ; commented out use of Queue.Queue ;
threading/Queue should maybe last of all do paranoid
locking after all other stuff in the lib does so, in
case Python would really go towards CPU level
memory/time atoms, what in my opinion would destroy a
VHL language. In case, I missed something, Queue should
be uncommented.  of the bare list. (The tests in all my
apps raised no problems - I used that like tools since
years, just reshaped them a little for this posting)


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