diff options
author | Aidan Skinner <aidan@apache.org> | 2009-09-09 13:05:43 +0000 |
---|---|---|
committer | Aidan Skinner <aidan@apache.org> | 2009-09-09 13:05:43 +0000 |
commit | c1ebe66bfab328c5192a35c21ea290b5c45f40f5 (patch) | |
tree | 6e61e50d92442f29287a82c22b54de6beac43b2c /qpid/python/qpid/concurrency.py | |
parent | 7b28732091473d93ce7546c70fa1d2dbd685161a (diff) | |
download | qpid-python-c1ebe66bfab328c5192a35c21ea290b5c45f40f5.tar.gz |
Merge from trunk
git-svn-id: https://svn.apache.org/repos/asf/qpid/branches/java-network-refactor@812936 13f79535-47bb-0310-9956-ffa450edef68
Diffstat (limited to 'qpid/python/qpid/concurrency.py')
-rw-r--r-- | qpid/python/qpid/concurrency.py | 65 |
1 files changed, 65 insertions, 0 deletions
diff --git a/qpid/python/qpid/concurrency.py b/qpid/python/qpid/concurrency.py new file mode 100644 index 0000000000..00cdb6b953 --- /dev/null +++ b/qpid/python/qpid/concurrency.py @@ -0,0 +1,65 @@ +# +# 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. +# + +import inspect, time + +def synchronized(meth): + args, vargs, kwargs, defs = inspect.getargspec(meth) + scope = {} + scope["meth"] = meth + exec """ +def %s%s: + %s + %s._lock.acquire() + try: + return meth%s + finally: + %s._lock.release() +""" % (meth.__name__, inspect.formatargspec(args, vargs, kwargs, defs), + repr(inspect.getdoc(meth)), args[0], + inspect.formatargspec(args, vargs, kwargs, defs, + formatvalue=lambda x: ""), + args[0]) in scope + return scope[meth.__name__] + +class Waiter(object): + + def __init__(self, condition): + self.condition = condition + + def wait(self, predicate, timeout=None): + passed = 0 + start = time.time() + while not predicate(): + if timeout is None: + # using the timed wait prevents keyboard interrupts from being + # blocked while waiting + self.condition.wait(3) + elif passed < timeout: + self.condition.wait(timeout - passed) + else: + return False + passed = time.time() - start + return True + + def notify(self): + self.condition.notify() + + def notifyAll(self): + self.condition.notifyAll() |