--- /dev/null
+#!/usr/bin/env python
+#
+# based on plot-timeline.py by Federico Mena-Quintero <federico at ximian dotcom>
+# example:
+# GST_DEBUG_NO_COLOR=1 GST_DEBUG="*:3" gst-launch-0.10 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 = 9
+PIXELS_PER_SECOND = 1000
+PIXELS_PER_LINE = 12
+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
+mark_regex = re.compile (r'^(\d:\d\d:\d\d\.\d+) \d+ 0x[0-9a-f]+ [A-Z]+ +([a-zA-Z_]+ )(.*)')
+mark_timestamp_group = 1
+mark_program_group = 2
+mark_log_group = 3
+
+success_result = "0"
+
+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.pending_execs = []
+ self.syscalls = []
+
+ def search_pending_execs (self, search_pid):
+ n = len (self.pending_execs)
+ for i in range (n):
+ (pid, timestamp, command) = self.pending_execs[i]
+ if pid == search_pid:
+ return (i, timestamp, command)
+
+ return (None, None, None)
+
+ def add_line (self, str):
+ m = mark_regex.search (str)
+ if m:
+ timestr = m.group (mark_timestamp_group)
+ timestamp = float (timestr[5:]) + (float (timestr[2:3]) * 60.0) + (float (timestr[0]) * 60.0*60.0)
+ 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)
+
+ return
+
+def parse_strace(filename):
+ parser = SyscallParser ()
+
+ for line in file(filename, "r").readlines():
+ if line == "":
+ break
+
+ 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):
+ num_syscalls = len(syscalls)
+
+ metrics = Metrics()
+ metrics.width = PLOT_WIDTH
+
+ last_timestamp = syscalls[num_syscalls - 1].timestamp
+ num_seconds = int(math.ceil(last_timestamp))
+ metrics.height = max(num_seconds * PIXELS_PER_SECOND,
+ num_syscalls * PIXELS_PER_LINE)
+
+ 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)
+
+ 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):
+ 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)")
+
+ 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_NO_COLOR=1 GST_DEBUG=XXX <application>"'
+ return 1
+
+ in_filename = args[0]
+ out_filename = options.output
+
+ 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))
projects / platform / upstream / gstreamer.git / commitdiff