gstreamer/debug-viewer/tests/performance.py

#!/usr/bin/env python
# -*- coding: utf-8; mode: python; -*-
#
#  GStreamer Debug Viewer - View and analyze GStreamer debug log files
#
#  Copyright (C) 2007 René Stadler <mail@renestadler.de>
#
#  This program is free software; you can redistribute it and/or modify it
#  under the terms of the GNU General Public License as published by the Free
#  Software Foundation; either version 3 of the License, or (at your option)
#  any later version.
#
#  This program is distributed in the hope that it will be useful, but WITHOUT
#  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
#  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
#  more details.
#
#  You should have received a copy of the GNU General Public License along with
#  this program.  If not, see <http://www.gnu.org/licenses/>.

"""GStreamer Debug Viewer performance test program."""

import sys
import os
import os.path
from glob import glob
import time

import gi

from gi.repository import GObject

sys.path.insert (0, os.path.join (sys.path[0], os.pardir))

from GstDebugViewer import Common, Data, GUI

class TestParsingPerformance (object):

    def __init__ (self, filename):

        self.main_loop = GObject.MainLoop ()
        self.log_file = Data.LogFile (filename, Common.Data.DefaultDispatcher ())
        self.log_file.consumers.append (self)

    def start (self):

        self.log_file.start_loading ()

    def handle_load_started (self):

        self.start_time = time.time ()

    def handle_load_finished (self):

        diff = time.time () - self.start_time
        print "line cache built in %0.1f ms" % (diff * 1000.,)

        start_time = time.time ()
        model = GUI.LazyLogModel (self.log_file)
        for row in model:
            pass
        diff = time.time () - start_time
        print "model iterated in %0.1f ms" % (diff * 1000.,)
        print "overall time spent: %0.1f s" % (time.time () - self.start_time,)

        import resource
        rusage = resource.getrusage (resource.RUSAGE_SELF)
        print "time spent in user mode: %.2f s" % (rusage.ru_utime,)
        print "time spent in system mode: %.2f s" % (rusage.ru_stime,)

def main ():

    if len (sys.argv) > 1:
        test = TestParsingPerformance (sys.argv[1])
        test.start ()

if __name__ == "__main__":
    main ()