gstreamer/tools/gst-plot-timeline.py
Руслан Ижбулатов 797fcd1d49 info: Add debug color mode option
This allows to explicitely set the debug output color
mode to UNIX on every platform, enable it (use platform
default color mode) or enable it.

https://bugzilla.gnome.org/show_bug.cgi?id=674320
2013-07-18 14:30:44 +02:00

314 lines
8.6 KiB
Python
Executable file

#!/usr/bin/env python
#
# based on plot-timeline.py by Federico Mena-Quintero <federico at ximian dotcom>
# example:
# GST_DEBUG_COLOR_MODE=off GST_DEBUG="*:3" gst-launch-1.0 2>debug.log audiotestsrc num-buffers=10 ! audioconvert ! alsasink
# gst-plot-timeline.py debug.log --output=debug.png
import math
import optparse
import os
import re
import sys
import cairo
FONT_NAME = "Bitstream Vera Sans"
FONT_SIZE = 8
# how many pixels for a second on the timeline
PIXELS_PER_SECOND = 300
# how many pixels for one line of log
PIXELS_PER_LINE = 10
PLOT_WIDTH = 1400
TIME_SCALE_WIDTH = 20
SYSCALL_MARKER_WIDTH = 20
LOG_TEXT_XPOS = 400
LOG_MARKER_WIDTH = 20
BACKGROUND_COLOR = (0, 0, 0)
# assumes GST_DEBUG_LOG_COLOR=1
# timestamp pid thread level category,file,line,msg
mark_regex = re.compile (r'^(\d+:\d+:\d+\.\d+) +\d+ +0?x?[0-9a-f]+ [A-Z]+ +([-a-zA-Z0-9_]+ )(.*)')
mark_timestamp_group = 1
mark_program_group = 2
mark_log_group = 3
success_result = "0"
skip_lines = 0
max_lines = 500
filter_regex = re.compile ('')
skip_regex = re.compile('')
class BaseMark:
colors = 0, 0, 0
def __init__(self, timestamp, log):
self.timestamp = timestamp
self.log = log
self.timestamp_ypos = 0
self.log_ypos = 0
class AccessMark(BaseMark):
pass
class LastMark(BaseMark):
colors = 1.0, 0, 0
class FirstMark(BaseMark):
colors = 1.0, 0, 0
class ExecMark(BaseMark):
# colors = 0.75, 0.33, 0.33
colors = (1.0, 0.0, 0.0)
def __init__(self, timestamp, log):
BaseMark.__init__(self, timestamp,
'execve: ' + os.path.basename(log))
class Metrics:
def __init__(self):
self.width = 0
self.height = 0
# don't use black or red
palette = [
(0.12, 0.29, 0.49),
(0.36, 0.51, 0.71),
(0.75, 0.31, 0.30),
(0.62, 0.73, 0.38),
(0.50, 0.40, 0.63),
(0.29, 0.67, 0.78),
(0.96, 0.62, 0.34)
]
class SyscallParser:
def __init__ (self):
self.syscalls = []
def add_line (self, str):
m = mark_regex.search (str)
if m:
timestr = m.group (mark_timestamp_group).split(':')
timestamp = float (timestr[2]) + (float (timestr[1]) * 60.0) + (float (timestr[0]) * 3600.0)
program = m.group (mark_program_group)
text = program + m.group (mark_log_group)
if text == 'last':
self.syscalls.append (LastMark (timestamp, text))
elif text == 'first':
self.syscalls.append (FirstMark (timestamp, text))
else:
s = AccessMark (timestamp, text)
program_hash = program.__hash__ ()
s.colors = palette[program_hash % len (palette)]
self.syscalls.append (s)
else:
print 'No log in %s' % str
return
def parse_strace(filename):
parser = SyscallParser ()
global skip_lines
global max_lines
global skip_regex
skip_found = False
for line in file(filename, "r").readlines():
if line == "":
break
if not skip_found:
if skip_regex.search(line):
skip_found = True
else:
continue
if skip_lines > 0:
skip_lines -= 1
continue
if len(parser.syscalls) >= max_lines:
break
if filter_regex.search(line):
parser.add_line (line)
return parser.syscalls
def normalize_timestamps(syscalls):
first_timestamp = syscalls[0].timestamp
for syscall in syscalls:
syscall.timestamp -= first_timestamp
def compute_syscall_metrics(syscalls):
global PIXELS_PER_SECOND
global PIXELS_PER_LINE
num_syscalls = len(syscalls)
metrics = Metrics()
metrics.width = PLOT_WIDTH
last_timestamp = syscalls[num_syscalls - 1].timestamp
time_height = int(math.ceil(last_timestamp * PIXELS_PER_SECOND))
line_height = num_syscalls * PIXELS_PER_LINE
if time_height > line_height:
metrics.height = time_height
print "Adjusting PIXELS_PER_LINE = %d" % PIXELS_PER_LINE
PIXELS_PER_LINE = metrics.height / num_syscalls
print " PIXELS_PER_LINE = %d" % PIXELS_PER_LINE
else:
metrics.height = line_height
print "Adjusting PIXELS_PER_SECOND %d" % PIXELS_PER_SECOND
PIXELS_PER_SECOND = int(math.ceil(metrics.height / last_timestamp))
print " PIXELS_PER_SECOND %d" % PIXELS_PER_SECOND
text_ypos = 0
for syscall in syscalls:
syscall.timestamp_ypos = syscall.timestamp * PIXELS_PER_SECOND
syscall.log_ypos = text_ypos + FONT_SIZE
text_ypos += PIXELS_PER_LINE
return metrics
def plot_time_scale(surface, ctx, metrics):
num_seconds = (metrics.height + PIXELS_PER_SECOND - 1) / PIXELS_PER_SECOND
ctx.set_source_rgb(0.5, 0.5, 0.5)
ctx.set_line_width(1.0)
for i in range(num_seconds):
ypos = i * PIXELS_PER_SECOND
ctx.move_to(0, ypos + 0.5)
ctx.line_to(TIME_SCALE_WIDTH, ypos + 0.5)
ctx.stroke()
ctx.move_to(0, ypos + 2 + FONT_SIZE)
ctx.show_text("%d s" % i)
def plot_syscall(surface, ctx, syscall):
ctx.set_source_rgb(*syscall.colors)
# Line
ctx.move_to(TIME_SCALE_WIDTH, syscall.timestamp_ypos)
ctx.line_to(TIME_SCALE_WIDTH + SYSCALL_MARKER_WIDTH, syscall.timestamp_ypos)
ctx.line_to(LOG_TEXT_XPOS - LOG_MARKER_WIDTH, syscall.log_ypos - FONT_SIZE / 2 + 0.5)
ctx.line_to(LOG_TEXT_XPOS, syscall.log_ypos - FONT_SIZE / 2 + 0.5)
ctx.stroke()
# Log text
ctx.move_to(LOG_TEXT_XPOS, syscall.log_ypos)
ctx.show_text("%8.5f: %s" % (syscall.timestamp, syscall.log))
def plot_syscalls_to_surface(syscalls, metrics):
num_syscalls = len(syscalls)
print 'picture size: %d x %d' % (metrics.width, metrics.height);
surface = cairo.ImageSurface(cairo.FORMAT_RGB24,
metrics.width, metrics.height)
ctx = cairo.Context(surface)
ctx.select_font_face(FONT_NAME)
ctx.set_font_size(FONT_SIZE)
# Background
ctx.set_source_rgb (*BACKGROUND_COLOR)
ctx.rectangle(0, 0, metrics.width, metrics.height)
ctx.fill()
# Time scale
plot_time_scale(surface, ctx, metrics)
# Contents
ctx.set_line_width(1.0)
for syscall in syscalls:
plot_syscall(surface, ctx, syscall)
return surface
def main(args):
global skip_lines
global max_lines
global filter_regex
global skip_regex
option_parser = optparse.OptionParser(
usage="usage: %prog -o output.png <debug.log>")
option_parser.add_option("-o",
"--output", dest="output",
metavar="FILE",
help="Name of output file (output is a PNG file)")
option_parser.add_option("-s",
"--skip", dest="skip",
metavar="LINES",
help="Skip a number of loglines at the beginning of the file or wait till a regular expression happens")
option_parser.add_option("-m",
"--max-lines", dest="max",
help="max lines that need to be plotted")
option_parser.add_option("-f",
"--filter", dest="filter",
help="filter the log lines on a regular expression")
options, args = option_parser.parse_args()
if not options.output:
print 'Please specify an output filename with "-o file.png" or "--output=file.png".'
return 1
if len(args) != 1:
print 'Please specify only one input filename, which is an debug log taken with "GST_DEBUG_COLOR_MODE=off GST_DEBUG=XXX <application>"'
return 1
in_filename = args[0]
out_filename = options.output
if options.skip:
try:
skip_lines = int(options.skip)
except:
skip_regex = re.compile(options.skip)
skip_lines = 0
if options.max:
max_lines = int(options.max)
if options.filter:
filter_regex = re.compile(options.filter)
syscalls = []
for syscall in parse_strace(in_filename):
syscalls.append(syscall)
if isinstance(syscall, FirstMark):
syscalls = []
elif isinstance(syscall, LastMark):
break
if not syscalls:
print 'No logs in %s' % in_filename
return 1
normalize_timestamps(syscalls)
metrics = compute_syscall_metrics(syscalls)
surface = plot_syscalls_to_surface(syscalls, metrics)
surface.write_to_png(out_filename)
return 0
if __name__ == "__main__":
sys.exit(main(sys.argv))