Signed-off-by: Isaku Yamahata <[email protected]> --- ryu/lib/task_queue.py | 62 +++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 62 insertions(+) create mode 100644 ryu/lib/task_queue.py
diff --git a/ryu/lib/task_queue.py b/ryu/lib/task_queue.py new file mode 100644 index 0000000..b8ab357 --- /dev/null +++ b/ryu/lib/task_queue.py @@ -0,0 +1,62 @@ +# Copyright (C) 2011 Nippon Telegraph and Telephone Corporation. +# Copyright (C) 2011, 2012 Isaku Yamahata <yamahata at private email ne jp> +# +# Licensed 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 gevent +import gevent.queue +import logging +import traceback + + +LOG = logging.getLogger(__name__) + + +class TaskQueue(object): + class _TaskClose(object): + pass + + def __init__(self): + super(TaskQueue, self).__init__() + self.is_closed = False + self.task_q = gevent.queue.Queue() + self.serve_thread = gevent.spawn(self._serve) + + def close(self): + self.queue(self._TaskClose) + self.serve_thread.join() + + def queue(self, func): + assert not self.is_closed + self.task_q.put(func) + + def _serve(self): + try: + while True: + func = self.task_q.get() + if func == self._TaskClose: + break + func() + except: + traceback.print_exc() # for debug + raise + + # drain queue + try: + while True: + func = self.task_q.get_nowait() + func() + except gevent.queue.Empty: + self.is_closed = True + pass -- 1.7.10.4 ------------------------------------------------------------------------------ Keep yourself connected to Go Parallel: TUNE You got it built. Now make it sing. Tune shows you how. http://goparallel.sourceforge.net _______________________________________________ Ryu-devel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/ryu-devel
