Revision Log

profiler.py

Revision 522 (checked in by fumanchu, 3 years ago)

1. Config section [global] (pathless) is now distinct from / (root path); they are no longer synonyms. "global" is the parent of "/".
2. The Request-URI is now parsed much earlier in Request processing, so that onStartResource and error filter methods may have access to it.
3. Absolute URI's (on the request line) are now converted to relative URI's to facilitate configMap lookups.
4. A Request-URI of "*" sets cherrypy.request.path to "global" (again for configMap).
5. Fixed a bug in config.getAll where the initial slash was missing for configMap lookups.
6. Bugfix: del Content-Length header if None.

Line
1	"""
2	Copyright (c) 2004, CherryPy Team (team@cherrypy.org)
3	All rights reserved.
4
5	Redistribution and use in source and binary forms, with or without modification,
6	are permitted provided that the following conditions are met:
7
8	* Redistributions of source code must retain the above copyright notice,
9	this list of conditions and the following disclaimer.
10	* Redistributions in binary form must reproduce the above copyright notice,
11	this list of conditions and the following disclaimer in the documentation
12	and/or other materials provided with the distribution.
13	* Neither the name of the CherryPy Team nor the names of its contributors
14	may be used to endorse or promote products derived from this software
15	without specific prior written permission.
16
17	THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
18	ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
19	WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
20	DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
21	FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22	DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
23	SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
24	CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
25	OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
26	OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27	"""
28
29	"""Profiler tools for CherryPy.
30
31	CherryPy users
32	==============
33
34	You can profile any of your pages as follows:
35
36	from cherrypy.lib import profile
37
38	class Root:
39	p = profile.Profiler("/path/to/profile/dir")
40
41	def index(self):
42	self.p.run(self._index)
43	index.exposed = True
44
45	def _index(self):
46	return "Hello, world!"
47
48	cherrypy.root = Root()
49
50
51	CherryPy developers
52	===================
53
54	This module can be used whenever you make changes to CherryPy, to get a
55	quick sanity-check on overall CP performance. Set the config entry:
56	"profiling.on = True" to turn on profiling. Then, use the serve()
57	function to browse the results in a web browser. If you run this
58	module from the command line, it will call serve() for you.
59
60	"""
61
62
63	import hotshot
64	import os, os.path
65	import sys
66
67	try:
68	import cStringIO as StringIO
69	except ImportError:
70	import StringIO
71
72
73	class Profiler(object):
74
75	def __init__(self, path=None):
76	if not path:
77	path = os.path.join(os.path.dirname(__file__), "profile")
78	self.path = path
79	if not os.path.exists(path):
80	os.makedirs(path)
81	self.count = 0
82
83	def run(self, func, *args):
84	"""run(func, *args). Run func, dumping profile data into self.path."""
85	self.count += 1
86	path = os.path.join(self.path, "cp_%04d.prof" % self.count)
87	prof = hotshot.Profile(path)
88	prof.runcall(func, *args)
89	prof.close()
90
91	def statfiles(self):
92	"""statfiles() -> list of available profiles."""
93	return [f for f in os.listdir(self.path)
94	if f.startswith("cp_") and f.endswith(".prof")]
95
96	def stats(self, filename, sortby='cumulative'):
97	"""stats(index) -> output of print_stats() for the given profile."""
98	from hotshot.stats import load
99	s = load(os.path.join(self.path, filename))
100	s.strip_dirs()
101	s.sort_stats(sortby)
102	oldout = sys.stdout
103	try:
104	sys.stdout = sio = StringIO.StringIO()
105	s.print_stats()
106	finally:
107	sys.stdout = oldout
108	response = sio.getvalue()
109	sio.close()
110	return response
111
112	def index(self):
113	return """<html>
114	<head><title>CherryPy profile data</title></head>
115	<frameset cols='200, 1*'>
116	<frame src='menu' />
117	<frame name='main' src='' />
118	</frameset>
119	</html>
120	"""
121	index.exposed = True
122
123	def menu(self):
124	yield "<h2>Profiling runs</h2>"
125	yield "<p>Click on one of the runs below to see profiling data.</p>"
126	runs = self.statfiles()
127	runs.sort()
128	for i in runs:
129	yield "<a href='report?filename=%s' target='main'>%s</a><br />" % (i, i)
130	menu.exposed = True
131
132	def report(self, filename):
133	import cherrypy
134	cherrypy.response.headerMap['Content-Type'] = 'text/plain'
135	return self.stats(filename)
136	report.exposed = True
137
138
139	def serve(path=None, port=8080):
140	import cherrypy
141	cherrypy.root = Profiler(path)
142	cherrypy.config.update({'server.socketPort': port,
143	'server.threadPool': 10,
144	'server.environment': "production",
145	'session.storageType': "ram",
146	})
147	cherrypy.server.start()
148
149
150	if __name__ == "__main__":
151	serve(*tuple(sys.argv[1:]))
152

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