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