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authorRajith Muditha Attapattu <rajith@apache.org>2007-11-20 13:59:54 +0000
committerRajith Muditha Attapattu <rajith@apache.org>2007-11-20 13:59:54 +0000
commitbcd011a10c0db4ffc6f78380c548d673e270e000 (patch)
treeae6961f122221a7ce574e10895be8abcca044f12 /Final/python/qpid/queue.py
parent5b7a0ca8896f20c85f176cd178735554833bcefc (diff)
downloadqpid-python-bcd011a10c0db4ffc6f78380c548d673e270e000.tar.gz
backing up the previous tag
git-svn-id: https://svn.apache.org/repos/asf/incubator/qpid/tags/M2@596673 13f79535-47bb-0310-9956-ffa450edef68
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-#
-# Licensed to the Apache Software Foundation (ASF) under one
-# or more contributor license agreements. See the NOTICE file
-# distributed with this work for additional information
-# regarding copyright ownership. The ASF licenses this file
-# to you under the Apache License, Version 2.0 (the
-# "License"); you may not use this file except in compliance
-# with the License. You may obtain a copy of the License at
-#
-# http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing,
-# software distributed under the License is distributed on an
-# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
-# KIND, either express or implied. See the License for the
-# specific language governing permissions and limitations
-# under the License.
-#
-
-"""
-This module augments the standard python multithreaded Queue
-implementation to add a close() method so that threads blocking on the
-content of a queue can be notified if the queue is no longer in use.
-"""
-
-from Queue import Queue as BaseQueue, Empty, Full
-
-class Closed(Exception): pass
-
-class Queue(BaseQueue):
-
- END = object()
-
- def close(self):
- self.put(Queue.END)
-
- def get(self, block = True, timeout = None):
- result = BaseQueue.get(self, block, timeout)
- if result == Queue.END:
- # this guarantees that any other waiting threads or any future
- # calls to get will also result in a Closed exception
- self.put(Queue.END)
- raise Closed()
- else:
- return result