| 1 |
# Copyright (C) 2003 by Intevation GmbH |
| 2 |
# Authors: |
| 3 |
# Bernhard Herzog <[email protected]> |
| 4 |
# |
| 5 |
# This program is free software under the GPL (>=v2) |
| 6 |
# Read the file COPYING coming with the software for details. |
| 7 |
|
| 8 |
"""Performance Measurement |
| 9 |
|
| 10 |
This module implements two Thuban commands in a new Profiling menu: |
| 11 |
|
| 12 |
Profile Screen Render -- Run the screen rendering code in a profile |
| 13 |
|
| 14 |
Time Screen Render -- Measure the time taken for a complete redraw |
| 15 |
|
| 16 |
See the individual functions for more details. |
| 17 |
""" |
| 18 |
|
| 19 |
__version__ = "$Revision$" |
| 20 |
# $Source$ |
| 21 |
# $Id$ |
| 22 |
|
| 23 |
import os |
| 24 |
import tempfile |
| 25 |
import profile |
| 26 |
import time |
| 27 |
|
| 28 |
from Thuban.UI.command import registry, Command |
| 29 |
import Thuban.UI.mainwindow |
| 30 |
menu = Thuban.UI.mainwindow.main_menu.InsertMenu("profiler", "&Profiler") |
| 31 |
|
| 32 |
# |
| 33 |
# Customization |
| 34 |
# |
| 35 |
# Assign to these in your ~/.thuban/thubanstart |
| 36 |
|
| 37 |
# The machine specific profiler bias. See the standard python profile |
| 38 |
# module for details on how to find out which value to use. |
| 39 |
profiler_bias = 0 |
| 40 |
|
| 41 |
# The directory the profile output is to be written to |
| 42 |
# (Call mktemp once to initialize tempfile.tempdir) |
| 43 |
tempfile.mktemp() |
| 44 |
profile_dir = tempfile.tempdir |
| 45 |
|
| 46 |
|
| 47 |
# |
| 48 |
# Timing and profiling a complete redraw |
| 49 |
# |
| 50 |
|
| 51 |
def do_redraw(context): |
| 52 |
"""Perform a complete redraw in the canvas in context""" |
| 53 |
canvas = context.mainwindow.canvas |
| 54 |
|
| 55 |
# Make sure there are no no finished bitmaps and active renderer |
| 56 |
canvas.full_redraw() |
| 57 |
|
| 58 |
# Iterate until all is drawn |
| 59 |
for c in canvas._render_iterator(): |
| 60 |
pass |
| 61 |
|
| 62 |
|
| 63 |
# |
| 64 |
# Profiling the redraw |
| 65 |
# |
| 66 |
|
| 67 |
|
| 68 |
def profile_screen_renderer(context): |
| 69 |
"""Script to run the redraw in the profiler |
| 70 |
|
| 71 |
The data gathered by the profiler will be written to |
| 72 |
<TMPDIR>/thuban-render.profile (<TMPDIR> is your system specific |
| 73 |
temporary directory. |
| 74 |
|
| 75 |
See the python documentation of the profile and pstats modules for |
| 76 |
how to access the data in the generated .profile file. |
| 77 |
""" |
| 78 |
print "profiling screen renderer...", |
| 79 |
prof = profile.Profile(bias = profiler_bias) |
| 80 |
prof.runctx("do_redraw(context)", globals(), locals()) |
| 81 |
filename = os.path.join(profile_dir, "thuban-render.profile") |
| 82 |
prof.dump_stats(filename) |
| 83 |
print "done and saved to", filename |
| 84 |
|
| 85 |
|
| 86 |
registry.Add(Command("profile_screen_renderer", "Profile Screen Render", |
| 87 |
profile_screen_renderer, |
| 88 |
helptext = "Profile the screen render")) |
| 89 |
menu.InsertItem("profile_screen_renderer") |
| 90 |
|
| 91 |
|
| 92 |
# |
| 93 |
# Timing the redraw |
| 94 |
# |
| 95 |
|
| 96 |
def time_screen_renderer(context): |
| 97 |
"""Script to measure the time of a complete redraw. |
| 98 |
|
| 99 |
The time taken will be printed to stdout. |
| 100 |
""" |
| 101 |
start = time.clock() |
| 102 |
do_redraw(context) |
| 103 |
print "redraw finished in", time.clock() - start, "s" |
| 104 |
|
| 105 |
|
| 106 |
registry.Add(Command("time_screen_renderer", "Time Screen Render", |
| 107 |
time_screen_renderer, |
| 108 |
helptext = "Time the screen render")) |
| 109 |
menu.InsertItem("time_screen_renderer") |
| 110 |
|
Parent Directory
| 
Revision Log