зеркало из https://github.com/mozilla/pjs.git
75 строки
2.8 KiB
Python
75 строки
2.8 KiB
Python
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# Utilities for registering functions to be called at xpcom shutdown.
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#
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# Pass xpcom.shutdown.register a function (and optionally args) that should
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# be called as xpcom shutsdown. Relies on xpcom itself sending the
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# standard shutdown notification.
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# ***** BEGIN LICENSE BLOCK *****
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# Version: MPL 1.1/GPL 2.0/LGPL 2.1
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#
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# The contents of this file are subject to the Mozilla Public License Version
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# 1.1 (the "License"); you may not use this file except in compliance with
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# the License. You may obtain a copy of the License at
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# http://www.mozilla.org/MPL/
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#
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# Software distributed under the License is distributed on an "AS IS" basis,
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# WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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# for the specific language governing rights and limitations under the
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# License.
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#
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# The Original Code is the Python XPCOM language bindings.
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#
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# The Initial Developer of the Original Code is Mark Hammond.
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# Portions created by the Initial Developer are Copyright (C) 2000
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# the Initial Developer. All Rights Reserved.
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#
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# Contributor(s):
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#
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# Alternatively, the contents of this file may be used under the terms of
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# either the GNU General Public License Version 2 or later (the "GPL"), or
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# the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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# in which case the provisions of the GPL or the LGPL are applicable instead
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# of those above. If you wish to allow use of your version of this file only
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# under the terms of either the GPL or the LGPL, and not to allow others to
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# use your version of this file under the terms of the MPL, indicate your
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# decision by deleting the provisions above and replace them with the notice
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# and other provisions required by the GPL or the LGPL. If you do not delete
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# the provisions above, a recipient may use your version of this file under
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# the terms of any one of the MPL, the GPL or the LGPL.
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#
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# ***** END LICENSE BLOCK *****
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#
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import xpcom.server
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from xpcom import _xpcom
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from xpcom.components import interfaces
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import logging
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_handlers = []
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class _ShutdownObserver:
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_com_interfaces_ = interfaces.nsIObserver
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def observe(self, service, topic, extra):
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logger = logging.getLogger('xpcom')
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while _handlers:
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func, args, kw = _handlers.pop()
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try:
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logger.debug("Calling shutdown handler '%s'(*%s, **%s)",
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func, args, kw)
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func(*args, **kw)
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except:
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logger.exception("Shutdown handler '%s' failed", func)
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def register(func, *args, **kw):
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_handlers.append( (func, args, kw) )
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# Register
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svc = _xpcom.GetServiceManager().getServiceByContractID(
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"@mozilla.org/observer-service;1",
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interfaces.nsIObserverService)
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svc.addObserver(_ShutdownObserver(), "xpcom-shutdown", 0)
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del svc, _ShutdownObserver
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