1 files changed, 146 insertions, 0 deletions
diff --git a/heat_map.py b/heat_map.py
new file mode 100755
index 00000000..ae234b51
--- /dev/null
+++ b/heat_map.py
@@ -0,0 +1,146 @@
+#!/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:]))