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Diffstat (limited to 'os_net_config/openstack/common/local.py')
| -rw-r--r-- | os_net_config/openstack/common/local.py | 45 |
1 files changed, 0 insertions, 45 deletions
diff --git a/os_net_config/openstack/common/local.py b/os_net_config/openstack/common/local.py deleted file mode 100644 index 0819d5b..0000000 --- a/os_net_config/openstack/common/local.py +++ /dev/null @@ -1,45 +0,0 @@ -# Copyright 2011 OpenStack Foundation. -# All Rights Reserved. -# -# 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. - -"""Local storage of variables using weak references""" - -import threading -import weakref - - -class WeakLocal(threading.local): - def __getattribute__(self, attr): - rval = super(WeakLocal, self).__getattribute__(attr) - if rval: - # NOTE(mikal): this bit is confusing. What is stored is a weak - # reference, not the value itself. We therefore need to lookup - # the weak reference and return the inner value here. - rval = rval() - return rval - - def __setattr__(self, attr, value): - value = weakref.ref(value) - return super(WeakLocal, self).__setattr__(attr, value) - - -# NOTE(mikal): the name "store" should be deprecated in the future -store = WeakLocal() - -# A "weak" store uses weak references and allows an object to fall out of scope -# when it falls out of scope in the code that uses the thread local storage. A -# "strong" store will hold a reference to the object so that it never falls out -# of scope. -weak_store = WeakLocal() -strong_store = threading.local() |