1 files changed, 145 insertions, 0 deletions
diff --git a/fdo_scripts/divide_and_merge_profiles.py b/fdo_scripts/divide_and_merge_profiles.py
new file mode 100755
index 00000000..c75e353a
--- /dev/null
+++ b/fdo_scripts/divide_and_merge_profiles.py
@@ -0,0 +1,145 @@
+#!/usr/bin/python2.6
+#
+# Copyright 2011 Google Inc. All Rights Reserved.
+
+"""Script to divide and merge profiles."""
+
+import copy
+import optparse
+import os
+import pickle
+import re
+import sys
+import tempfile
+
+import build_chrome_browser
+import lock_machine
+import run_tests
+from utils import command_executer
+from utils import logger
+
+
+class ProfileMerger:
+  def __init__(self, inputs, output, chunk_size, merge_program, multipliers):
+    self._inputs = inputs
+    self._output = output
+    self._chunk_size = chunk_size
+    self._merge_program = merge_program
+    self._multipliers = multipliers
+    self._ce = command_executer.GetCommandExecuter()
+    self._l = logger.GetLogger()
+
+  def _GetFilesSetForInputDir(self, input_dir):
+    output_file = tempfile.mktemp()
+    command = "find %s -name '*.gcda' -o -name '*.imports' > %s" % (input_dir, output_file)
+    self._ce.RunCommand(command)
+    files = open(output_file, "r").read()
+    files_set = set([])
+    for f in files.splitlines():
+      stripped_file = f.replace(input_dir, "", 1)
+      stripped_file = stripped_file.lstrip("/")
+      files_set.add(stripped_file)
+    return files_set
+
+  def _PopulateFilesSet(self):
+    self._files_set = set([])
+    for i in self._inputs:
+      current_files_set = self._GetFilesSetForInputDir(i)
+      self._files_set.update(current_files_set)
+
+  def _GetSubset(self):
+    ret = []
+    for i in range(self._chunk_size):
+      if not self._files_set:
+        break
+      ret.append(self._files_set.pop())
+    return ret
+
+  def _CopyFilesTree(self, input_dir, files, output_dir):
+    for f in files:
+      src_file = os.path.join(input_dir, f)
+      dst_file = os.path.join(output_dir, f)
+      if not os.path.isdir(os.path.dirname(dst_file)):
+        command = "mkdir -p %s" % os.path.dirname(dst_file)
+        self._ce.RunCommand(command)
+      command = "cp %s %s" % (src_file, dst_file)
+      self._ce.RunCommand(command)
+
+  def _DoChunkMerge(self, current_files):
+    temp_dirs = []
+    for i in self._inputs:
+      temp_dir = tempfile.mkdtemp()
+      temp_dirs.append(temp_dir)
+      self._CopyFilesTree(i, current_files, temp_dir)
+    # Now do the merge.
+    command = ("%s --inputs=%s --output=%s" %
+               (self._merge_program,
+                ",".join(temp_dirs),
+                self._output))
+    if self._multipliers:
+      command = ("%s --multipliers=%s" %
+                 (command, self._multipliers))
+    ret = self._ce.RunCommand(command)
+    assert ret == 0, "%s command failed!" % command
+    for temp_dir in temp_dirs:
+      command = "rm -rf %s" % temp_dir
+      self._ce.RunCommand(command)
+
+  def DoMerge(self):
+    self._PopulateFilesSet()
+    while True:
+      current_files = self._GetSubset()
+      if not current_files:
+        break
+      self._DoChunkMerge(current_files)
+
+
+def Main(argv):
+  """The main function."""
+  # Common initializations
+###  command_executer.InitCommandExecuter(True)
+  command_executer.InitCommandExecuter()
+  l = logger.GetLogger()
+  ce = command_executer.GetCommandExecuter()
+  parser = optparse.OptionParser()
+  parser.add_option("--inputs",
+                    dest="inputs",
+                    help="Comma-separated input profile directories to merge.")
+  parser.add_option("--output",
+                    dest="output",
+                    help="Output profile directory.")
+  parser.add_option("--chunk_size",
+                    dest="chunk_size",
+                    default="50",
+                    help="Chunk size to divide up the profiles into.")
+  parser.add_option("--merge_program",
+                    dest="merge_program",
+                    default="/home/xur/bin/profile_merge_v15.par",
+                    help="Merge program to use to do the actual merge.")
+  parser.add_option("--multipliers",
+                    dest="multipliers",
+                    help="multipliers to use when merging. (optional)")
+
+  options, _ = parser.parse_args(argv)
+
+  if not all([options.inputs,
+              options.output,]):
+    l.LogError("Must supply --inputs and --output")
+    return 1
+
+  try:
+    pm = ProfileMerger(options.inputs.split(","), options.output,
+                       int(options.chunk_size), options.merge_program,
+                       options.multipliers)
+    pm.DoMerge()
+    retval = 0
+  except:
+    retval = 1
+  finally:
+    print "My work is done..."
+  return retval
+
+
+if __name__ == "__main__":
+  retval = Main(sys.argv)
+  sys.exit(retval)