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-#!/usr/bin/env python
-#
-# Copyright 2009 the V8 project authors. All rights reserved.
-# Redistribution and use in source and binary forms, with or without
-# modification, are permitted provided that the following conditions are
-# met:
-#
-# * Redistributions of source code must retain the above copyright
-# notice, this list of conditions and the following disclaimer.
-# * Redistributions in binary form must reproduce the above
-# copyright notice, this list of conditions and the following
-# disclaimer in the documentation and/or other materials provided
-# with the distribution.
-# * Neither the name of Google Inc. nor the names of its
-# contributors may be used to endorse or promote products derived
-# from this software without specific prior written permission.
-#
-# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-# This is an utility for converting V8 heap logs into .hp files that can
-# be further processed using 'hp2ps' tool (bundled with GHC and Valgrind)
-# to produce heap usage histograms.
-
-# Sample usage:
-# $ ./shell --log-gc script.js
-# $ tools/process-heap-prof.py v8.log | hp2ps -c > script-heap-graph.ps
-# ('-c' enables color, see hp2ps manual page for more options)
-# or
-# $ tools/process-heap-prof.py --js-cons-profile v8.log | hp2ps -c > script-heap-graph.ps
-# to get JS constructor profile
-
-
-import csv, sys, time, optparse
-
-def ProcessLogFile(filename, options):
- if options.js_cons_profile:
- itemname = 'heap-js-cons-item'
- else:
- itemname = 'heap-sample-item'
-
- first_call_time = None
- sample_time = 0.0
- sampling = False
- try:
- logfile = open(filename, 'rb')
- try:
- logreader = csv.reader(logfile)
-
- print('JOB "v8"')
- print('DATE "%s"' % time.asctime(time.localtime()))
- print('SAMPLE_UNIT "seconds"')
- print('VALUE_UNIT "bytes"')
-
- for row in logreader:
- if row[0] == 'heap-sample-begin' and row[1] == 'Heap':
- sample_time = float(row[3])/1000.0
- if first_call_time == None:
- first_call_time = sample_time
- sample_time -= first_call_time
- print('BEGIN_SAMPLE %.2f' % sample_time)
- sampling = True
- elif row[0] == 'heap-sample-end' and row[1] == 'Heap':
- print('END_SAMPLE %.2f' % sample_time)
- sampling = False
- elif row[0] == itemname and sampling:
- print(row[1]),
- if options.count:
- print('%d' % (int(row[2]))),
- if options.size:
- print('%d' % (int(row[3]))),
- print
- finally:
- logfile.close()
- except:
- sys.exit('can\'t open %s' % filename)
-
-
-def BuildOptions():
- result = optparse.OptionParser()
- result.add_option("--js_cons_profile", help="Constructor profile",
- default=False, action="store_true")
- result.add_option("--size", help="Report object size",
- default=False, action="store_true")
- result.add_option("--count", help="Report object count",
- default=False, action="store_true")
- return result
-
-
-def ProcessOptions(options):
- if not options.size and not options.count:
- options.size = True
- return True
-
-
-def Main():
- parser = BuildOptions()
- (options, args) = parser.parse_args()
- if not ProcessOptions(options):
- parser.print_help()
- sys.exit();
-
- if not args:
- print "Missing logfile"
- sys.exit();
-
- ProcessLogFile(args[0], options)
-
-
-if __name__ == '__main__':
- sys.exit(Main())