New submission from Aaron Staley <[email protected]>:
The multiprocess/pool.py distributed with the Python 2.7.2 Windows Installer is
different from the one distributed with the 64 bit windows installer or source
tarball - and is buggy.
Specifically, see Pool._terminate_pool:
def _terminate_pool(cls, taskqueue, inqueue, outqueue, pool,
worker_handler, task_handler, result_handler, cache):
# this is guaranteed to only be called once
debug('finalizing pool')
worker_handler._state = TERMINATE
task_handler._state = TERMINATE
taskqueue.put(None) # THIS LINE MISSING!
Without that line, termination may deadlock during Pool._help_stuff_finish.
The consequence to the user is the interpreter not shutting down.
----------
components: Windows
messages: 144934
nosy: Aaron.Staley
priority: normal
severity: normal
status: open
title: Incorrect pool.py distributed with Python 2.7 windows 32bit
versions: Python 2.7
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<http://bugs.python.org/issue13106>
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