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- # ***** 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 Python XPCOM language bindings.
- #
- # The Initial Developer of the Original Code is
- # ActiveState Tool Corp.
- # Portions created by the Initial Developer are Copyright (C) 2000, 2001
- # the Initial Developer. All Rights Reserved.
- #
- # Contributor(s):
- # Mark Hammond <mhammond@skippinet.com.au> (original author)
- #
- # 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 *****
-
- # This is a demo is how to use the xpcom.server "tracer" facility.
- #
- # This demo installs a tracer that uses the Python profiler. It then
- # creates the Python test component, and references some methods
- # and properties. It then dumps the profile statistics.
-
- # This same technique could also be used for debugging, for example.
-
- import profile
-
- p = profile.Profile()
- getters = {}
- setters = {}
-
- # A wrapper around a function - looks like a function,
- # but actually profiles the delegate.
- class TracerDelegate:
- def __init__(self, callme):
- self.callme = callme
- def __call__(self, *args):
- return p.runcall(self.callme, *args)
-
- # A wrapper around each of our XPCOM objects. All PyXPCOM calls
- # in are made on this object, which creates a TracerDelagate around
- # every function. As the function is called, it collects profile info.
- class Tracer:
- def __init__(self, ob):
- self.__dict__['_ob'] = ob
- def __repr__(self):
- return "<Tracer around %r>" % (self._ob,)
- def __str__(self):
- return "<Tracer around %r>" % (self._ob,)
- def __getattr__(self, attr):
- ret = getattr(self._ob, attr) # Attribute error just goes up
- if callable(ret):
- return TracerDelegate(ret)
- else:
- if not attr.startswith("_com_") and not attr.startswith("_reg_"):
- getters[attr] = getters.setdefault(attr,0) + 1
- return ret
- def __setattr__(self, attr, val):
- if self.__dict__.has_key(attr):
- self.__dict__[attr] = val
- return
- setters[attr] = setters.setdefault(attr,0) + 1
- setattr(self._ob, attr, val)
-
- # Installed as a global XPCOM function that if exists, will be called
- # to wrap each XPCOM object created.
- def MakeTracer(ob):
- # In some cases we may be asked to wrap ourself, so handle that.
- if isinstance(ob, Tracer):
- return ob
- return Tracer(ob)
-
- def test():
- import xpcom.server, xpcom.components
- xpcom.server.tracer = MakeTracer
- contractid = "Python.TestComponent"
- for i in range(100):
- c = xpcom.components.classes[contractid].createInstance().queryInterface(xpcom.components.interfaces.nsIPythonTestInterface)
- c.boolean_value = 0
- a = c.boolean_value
- c.do_boolean(0,1)
- print "Finshed"
- p.print_stats()
- print "%-30s%s" % ("Attribute Gets", "Number")
- print "-" * 36
- for name, num in getters.items():
- print "%-30s%d" % (name, num)
- print "%-30s%s" % ("Attribute Sets", "Number")
- print "-" * 36
- for name, num in setters.items():
- print "%-30s%d" % (name, num)
-
- test()
-