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loggerhead/middleware/profile.py

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'''Profiling middleware for paste.'''

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import cgi

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import threading

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from bzrlib.lsprof import profile

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class LSProfMiddleware(object):

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    '''Paste middleware for profiling with lsprof.'''

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    def __init__(self, app, global_conf=None):

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        self.app = app

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        self.lock = threading.Lock()

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        self.__count = 0

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    def __run_app(self, environ, start_response):

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        app_iter = self.app(environ, start_response)

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        try:

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            return list(app_iter)

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        finally:

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            if getattr(app_iter, 'close', None):

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                app_iter.close()

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    def __call__(self, environ, start_response):

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        """Run a request."""

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        self.lock.acquire()

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        try:

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            ret, stats = profile(self.__run_app, environ, start_response)

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            self.__count += 1

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            stats.save("%d-stats.callgrind" % self.__count, format="callgrind")

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            return ret

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        finally:

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            self.lock.release()

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Version: 2.0.1