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Diffstat (limited to 'tools/jprof/split-profile.py')
| -rwxr-xr-x | tools/jprof/split-profile.py | 143 |
1 files changed, 0 insertions, 143 deletions
diff --git a/tools/jprof/split-profile.py b/tools/jprof/split-profile.py deleted file mode 100755 index 89454d3eb9..0000000000 --- a/tools/jprof/split-profile.py +++ /dev/null @@ -1,143 +0,0 @@ -#!/usr/bin/python -# This Source Code Form is subject to the terms of the Mozilla Public -# License, v. 2.0. If a copy of the MPL was not distributed with this -# file, You can obtain one at http://mozilla.org/MPL/2.0/. - -# This program splits up a jprof profile into multiple files based on a -# list of functions in a text file. First, a complete profile is -# generated. Then, for each line in the text file, a profile is -# generated containing only stacks that go through that line, and also -# excluding all stacks in earlier lines in the text file. This means -# that the text file, from start to end, is splitting out pieces of the -# profile in their own file. Finally, a final profile containing the -# remainder is produced. - -# The program takes four arguments: -# (1) The path to jprof. -# (2) The path to the text file describing the splits. The output -# will be placed in the same directory as this file. -# (3) The program that was profiled. -# (4) The jprof-log file generated by the profile, to be split up. -# (Really, all arguments from (3) and later are passed through to -# jprof, so additional arguments could be provided if you want to pass -# additional arguments to jprof.) - -# In slightly more detail: -# -# This script uses jprof's includes (-i) and excludes (-e) options to -# split profiles into segments. It takes as input a single text file, -# and from that text file creates a series of jprof profiles in the -# directory the text file is in. -# -# The input file format looks like the following: -# -# poll g_main_poll -# GetRuleCascade CSSRuleProcessor::GetRuleCascade(nsPresContext *, nsIAtom *) -# RuleProcessorData RuleProcessorData::RuleProcessorData(nsPresContext *, nsIContent *, nsRuleWalker *, nsCompatibility *) -# -# From this input file, the script will construct a profile called -# jprof-0.html that contains the whole profile, a profile called -# jprof-1-poll.html that includes only stacks with g_main_poll, a -# profile called jprof-2-GetRuleCascade.html that includes only stacks -# that have GetRuleCascade and do not have g_main_poll, a profile called -# jprof-3-RuleProcessorData.html that includes only stacks that have the -# RuleProcessorData constructor and do not have GetRuleCascade or -# g_main_poll, and a profile called jprof-4.html that includes only -# stacks that do not have any of the three functions in them. -# -# This means that all of the segments of the profile, except -# jprof-0.html, are mutually exclusive. Thus clever ordering of the -# functions in the input file can lead to a logical splitting of the -# profile into segments. - -import sys -import subprocess -import os.path - -if len(sys.argv) < 5: - sys.stderr.write("Expected arguments: <jprof> <split-file> <program> <jprof-log>\n") - sys.exit(1) - -jprof = sys.argv[1] -splitfile = sys.argv[2] -passthrough = sys.argv[3:] - -for f in [jprof, splitfile]: - if not os.path.isfile(f): - sys.stderr.write("could not find file: {0}\n".format(f)) - sys.exit(1) - -def read_splits(splitfile): - """ - Read splitfile (each line of which contains a name, a space, and - then a function name to split on), and return a list of pairs - representing exactly that. (Note that the name cannot contain - spaces, but the function name can, and often does.) - """ - def line_to_split(line): - line = line.strip("\r\n") - idx = line.index(" ") - return (line[0:idx], line[idx+1:]) - - io = open(splitfile, "r") - result = [line_to_split(line) for line in io] - io.close() - return result - -splits = read_splits(splitfile) - -def generate_profile(options, destfile): - """ - Run jprof to generate one split of the profile. - """ - args = [jprof] + options + passthrough - print "Generating {0}".format(destfile) - destio = open(destfile, "w") - # jprof expects the "jprof-map" file to be in its current working directory - cwd = None - for option in passthrough: - if option.find("jprof-log"): - cwd = os.path.dirname(option) - if cwd is None: - raise StandardError("no jprof-log option given") - process = subprocess.Popen(args, stdout=destio, cwd=cwd) - process.wait() - destio.close() - if process.returncode != 0: - os.remove(destfile) - sys.stderr.write("Error {0} from command:\n {1}\n".format(process.returncode, " ".join(args))) - sys.exit(process.returncode) - -def output_filename(number, splitname): - """ - Return the filename (absolute path) we should use to output the - profile segment with the given number and splitname. Splitname - should be None for the complete profile and the remainder. - """ - def pad_count(i): - result = str(i) - # 0-pad to the same length - result = "0" * (len(str(len(splits) + 1)) - len(result)) + result - return result - - name = pad_count(number) - if splitname is not None: - name += "-" + splitname - - return os.path.join(os.path.dirname(splitfile), - "jprof-{0}.html".format(name)) - -# generate the complete profile -generate_profile([], output_filename(0, None)) - -# generate the listed splits -count = 1 -excludes = [] -for (splitname, splitfunction) in splits: - generate_profile(excludes + ["-i" + splitfunction], - output_filename(count, splitname)) - excludes += ["-e" + splitfunction] - count = count + 1 - -# generate the remainder after the splits -generate_profile(excludes, output_filename(count, None)) |