Mercurial > kallithea
view rhodecode/lib/profiler.py @ 2790:3c0ae44557c4 beta
more py2.5 compatibility patches
author | Marcin Kuzminski <marcin@python-works.com> |
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date | Mon, 03 Sep 2012 19:47:23 +0200 |
parents | 2c2bdaeca912 |
children |
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from __future__ import with_statement import gc import objgraph import cProfile import pstats import cgi import pprint import threading from StringIO import StringIO class ProfilingMiddleware(object): def __init__(self, app): self.lock = threading.Lock() self.app = app def __call__(self, environ, start_response): with self.lock: profiler = cProfile.Profile() def run_app(*a, **kw): self.response = self.app(environ, start_response) profiler.runcall(run_app, environ, start_response) profiler.snapshot_stats() stats = pstats.Stats(profiler) stats.sort_stats('calls') #cummulative # Redirect output out = StringIO() stats.stream = out stats.print_stats() resp = ''.join(self.response) # Lets at least only put this on html-like responses. if resp.strip().startswith('<'): ## The profiling info is just appended to the response. ## Browsers don't mind this. resp += ('<pre style="text-align:left; ' 'border-top: 4px dashed red; padding: 1em;">') resp += cgi.escape(out.getvalue(), True) ct = objgraph.show_most_common_types() print ct resp += ct if ct else '---' output = StringIO() pprint.pprint(environ, output, depth=3) resp += cgi.escape(output.getvalue(), True) resp += '</pre>' return resp