profiler.py 文件源码

def __call__(self, environ, start_response):
        response_body = []

        def catching_start_response(status, headers, exc_info=None):
            start_response(status, headers, exc_info)
            return response_body.append

        def runapp():
            appiter = self._app(environ, catching_start_response)
            response_body.extend(appiter)
            if hasattr(appiter, 'close'):
                appiter.close()

        p = Profile()
        start = time.time()
        p.runcall(runapp)
        body = b''.join(response_body)
        elapsed = time.time() - start

        if self._profile_dir is not None:
            prof_filename = os.path.join(self._profile_dir,
                                         '%s.%s.%06dms.%d.prof' % (
                                             environ['REQUEST_METHOD'],
                                             environ.get('PATH_INFO').strip(
                                                 '/').replace('/', '.') or 'root',
                                             elapsed * 1000.0,
                                             time.time()
                                         ))
            p.dump_stats(prof_filename)

        else:
            stats = Stats(p, stream=self._stream)
            stats.sort_stats(*self._sort_by)

            self._stream.write('-' * 80)
            self._stream.write('\nPATH: %r\n' % environ.get('PATH_INFO'))
            stats.print_stats(*self._restrictions)
            self._stream.write('-' * 80 + '\n\n')

        return [body]