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#!/usr/bin/python2
# Copyright 2015 The Chromium OS Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
"""Wrapper to generate heat maps for chrome."""
from __future__ import print_function
import argparse
import shutil
import os
import sys
import tempfile
from sets import Set
from cros_utils import command_executer
def IsARepoRoot(directory):
"""Returns True if directory is the root of a repo checkout."""
return os.path.exists(os.path.join(directory, '.repo'))
class HeatMapProducer(object):
"""Class to produce heat map."""
def __init__(self, chromeos_root, perf_data, page_size, binary):
self.chromeos_root = os.path.realpath(chromeos_root)
self.perf_data = os.path.realpath(perf_data)
self.page_size = page_size
self.dir = os.path.dirname(os.path.realpath(__file__))
self.binary = binary
self.tempDir = ''
self.ce = command_executer.GetCommandExecuter()
self.loading_address = None
self.temp_perf = ''
self.temp_perf_inchroot = ''
self.perf_report = ''
def copyFileToChroot(self):
self.tempDir = tempfile.mkdtemp(
prefix=os.path.join(self.chromeos_root, 'src/'))
self.temp_perf = os.path.join(self.tempDir, 'perf.data')
shutil.copy2(self.perf_data, self.temp_perf)
self.temp_perf_inchroot = os.path.join('~/trunk/src',
os.path.basename(self.tempDir))
def getPerfReport(self):
cmd = ('cd %s; perf report -D -i perf.data > perf_report.txt' %
self.temp_perf_inchroot)
retval = self.ce.ChrootRunCommand(self.chromeos_root, cmd)
if retval:
raise RuntimeError('Failed to generate perf report')
self.perf_report = os.path.join(self.tempDir, 'perf_report.txt')
def getBinaryBaseAddress(self):
cmd = 'grep PERF_RECORD_MMAP %s | grep "%s$"' % (self.perf_report,
self.binary)
retval, output, _ = self.ce.RunCommandWOutput(cmd)
if retval:
raise RuntimeError('Failed to run grep to get base address')
baseAddresses = Set()
for line in output.strip().split('\n'):
head = line.split('[')[2]
address = head.split('(')[0]
baseAddresses.add(address)
if len(baseAddresses) > 1:
raise RuntimeError(
'Multiple base address found, please disable ASLR and collect '
'profile again')
if not len(baseAddresses):
raise RuntimeError('Could not find the base address in the profile')
self.loading_address = baseAddresses.pop()
def RemoveFiles(self):
shutil.rmtree(self.tempDir)
if os.path.isfile(os.path.join(os.getcwd(), 'out.txt')):
os.remove(os.path.join(os.getcwd(), 'out.txt'))
if os.path.isfile(os.path.join(os.getcwd(), 'inst-histo.txt')):
os.remove(os.path.join(os.getcwd(), 'inst-histo.txt'))
def getHeatmap(self):
if not self.loading_address:
return
heatmap_script = os.path.join(self.dir, 'perf-to-inst-page.sh')
cmd = '{0} {1} {2} {3} {4}'.format(heatmap_script, self.binary,
self.perf_report, self.loading_address,
self.page_size)
retval = self.ce.RunCommand(cmd)
if retval:
raise RuntimeError('Failed to run script to generate heatmap')
def main(argv):
"""Parse the options.
Args:
argv: The options with which this script was invoked.
Returns:
0 unless an exception is raised.
"""
parser = argparse.ArgumentParser()
parser.add_argument('--chromeos_root',
dest='chromeos_root',
required=True,
help='ChromeOS root to use for generate heatmaps.')
parser.add_argument('--perf_data',
dest='perf_data',
required=True,
help='The raw perf data.')
parser.add_argument('--binary',
dest='binary',
required=False,
help='The name of the binary.',
default='chrome')
parser.add_argument('--page_size',
dest='page_size',
required=False,
help='The page size for heat maps.',
default=4096)
options = parser.parse_args(argv)
if not IsARepoRoot(options.chromeos_root):
parser.error('% does not contain .repo dir.' % options.chromeos_root)
if not os.path.isfile(options.perf_data):
parser.error('Cannot find perf_data: %s.' % options.perf_data)
heatmap_producer = HeatMapProducer(options.chromeos_root, options.perf_data,
options.page_size, options.binary)
try:
heatmap_producer.copyFileToChroot()
heatmap_producer.getPerfReport()
heatmap_producer.getBinaryBaseAddress()
heatmap_producer.getHeatmap()
print('\nheat map and time histgram genereated in the current directory '
'with name heat_map.png and timeline.png accordingly.')
except RuntimeError, e:
print(e)
finally:
heatmap_producer.RemoveFiles()
if __name__ == '__main__':
sys.exit(main(sys.argv[1:]))
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