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authordec05eba <dec05eba@protonmail.com>2020-11-05 01:45:06 +0100
committerdec05eba <dec05eba@protonmail.com>2020-11-05 01:45:06 +0100
commit2a8202e74846d191a321cca1202175af9db6107d (patch)
treea6f455caf07da1186851f343a237a4c4e4484f46 /python/olm/_finalize.py
parent8efa0ec17d8c262f9c3fd7603e8074f74a053708 (diff)
Convert to sibs projectHEADmaster
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diff --git a/python/olm/_finalize.py b/python/olm/_finalize.py
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-# The MIT License (MIT)
-# Copyright (c) 2010 Benjamin Peterson <benjamin@python.org>
-
-# Permission is hereby granted, free of charge, to any person obtaining a copy
-# of this software and associated documentation files (the "Software"), to deal
-# in the Software without restriction, including without limitation the rights
-# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-# copies of the Software, and to permit persons to whom the Software is
-# furnished to do so, subject to the following conditions:
-
-# The above copyright notice and this permission notice shall be included in
-# all copies or substantial portions of the Software.
-
-# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
-# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
-# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
-# IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
-# DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
-# OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE
-# OR OTHER DEALINGS IN THE SOFTWARE.
-
-"""Finalization with weakrefs
-
-This is designed for avoiding __del__.
-"""
-from __future__ import print_function
-
-import sys
-import traceback
-import weakref
-
-__author__ = "Benjamin Peterson <benjamin@python.org>"
-
-
-class OwnerRef(weakref.ref):
- """A simple weakref.ref subclass, so attributes can be added."""
- pass
-
-
-def _run_finalizer(ref):
- """Internal weakref callback to run finalizers"""
- del _finalize_refs[id(ref)]
- finalizer = ref.finalizer
- item = ref.item
- try:
- finalizer(item)
- except Exception: # pragma: no cover
- print("Exception running {}:".format(finalizer), file=sys.stderr)
- traceback.print_exc()
-
-
-_finalize_refs = {}
-
-
-def track_for_finalization(owner, item, finalizer):
- """Register an object for finalization.
-
- ``owner`` is the the object which is responsible for ``item``.
- ``finalizer`` will be called with ``item`` as its only argument when
- ``owner`` is destroyed by the garbage collector.
- """
- ref = OwnerRef(owner, _run_finalizer)
- ref.item = item
- ref.finalizer = finalizer
- _finalize_refs[id(ref)] = ref