New submission from Raymond Hettinger <[email protected]>:
Call sem.release(5) would have the same effect as:
with lock:
for i in range(5):
sem.release()
The use case is when a single semaphore is holding up multiple threads and
needs to release them all. According to "The Little Book of Semaphores
<http://greenteapress.com/semaphores/>", this is a common design pattern.
Basic patch attached. If the proposal meets with acceptance, will add tests
and a doc update.
----------
components: Library (Lib)
files: sem.diff
keywords: patch
messages: 126804
nosy: rhettinger
priority: normal
severity: normal
status: open
title: Add optional argument to Semaphore.release for releasing multiple threads
type: behavior
versions: Python 3.3
Added file: http://bugs.python.org/file20483/sem.diff
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