nsIComponentLoader is dead - long live nsIModuleLoader! Take the

opportunity to remove support for nsIComponentManagerObsolete, and
formalize a nice shutdown API.

Not part of the build.


git-svn-id: svn://10.0.0.236/trunk@186246 18797224-902f-48f8-a5cc-f745e15eee43

mozilla/extensions/python/xpcom/shutdown.py

@@ -0,0 +1,74 @@
+# Utilities for registering functions to be called at xpcom shutdown.
+#
+# Pass xpcom.shutdown.register a function (and optionally args) that should
+# be called as xpcom shutsdown.  Relies on xpcom itself sending the
+# standard shutdown notification.
+
+# ***** BEGIN LICENSE BLOCK *****
+# Version: MPL 1.1/GPL 2.0/LGPL 2.1
+#
+# The contents of this file are subject to the Mozilla Public License Version
+# 1.1 (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.mozilla.org/MPL/
+#
+# Software distributed under the License is distributed on an "AS IS" basis,
+# WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+# for the specific language governing rights and limitations under the
+# License.
+#
+# The Original Code is the Python XPCOM language bindings.
+#
+# The Initial Developer of the Original Code is Mark Hammond.
+# Portions created by the Initial Developer are Copyright (C) 2000
+# the Initial Developer. All Rights Reserved.
+#
+# Contributor(s):
+#
+# Alternatively, the contents of this file may be used under the terms of
+# either the GNU General Public License Version 2 or later (the "GPL"), or
+# the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
+# in which case the provisions of the GPL or the LGPL are applicable instead
+# of those above. If you wish to allow use of your version of this file only
+# under the terms of either the GPL or the LGPL, and not to allow others to
+# use your version of this file under the terms of the MPL, indicate your
+# decision by deleting the provisions above and replace them with the notice
+# and other provisions required by the GPL or the LGPL. If you do not delete
+# the provisions above, a recipient may use your version of this file under
+# the terms of any one of the MPL, the GPL or the LGPL.
+#
+# ***** END LICENSE BLOCK *****
+#
+
+import xpcom.server
+from xpcom import _xpcom
+from xpcom.components import interfaces
+
+import logging
+
+_handlers = []
+
+class _ShutdownObserver:
+    _com_interfaces_ = interfaces.nsIObserver
+    def observe(self, service, topic, extra):
+        logger = logging.getLogger('xpcom')
+        while _handlers:
+            func, args, kw = _handlers.pop()
+            try:
+                logger.debug("Calling shutdown handler '%s'(*%s, **%s)",
+                             func, args, kw)
+                func(*args, **kw)
+            except:
+                logger.exception("Shutdown handler '%s' failed", func)
+
+def register(func, *args, **kw):
+    _handlers.append( (func, args, kw) )
+
+# Register
+svc = _xpcom.GetServiceManager().getServiceByContractID(
+                                    "@mozilla.org/observer-service;1",
+                                    interfaces.nsIObserverService)
+
+svc.addObserver(_ShutdownObserver(), "xpcom-shutdown", 0)
+
+del svc, _ShutdownObserver