build/win32/pgomerge.py

   1 #!/usr/bin/python
   2 # This Source Code Form is subject to the terms of the Mozilla Public
   3 # License, v. 2.0. If a copy of the MPL was not distributed with this
   4 # file, You can obtain one at http://mozilla.org/MPL/2.0/.
   5
   6 # Usage: pgomerge.py <binary basename> <dist/bin>
   7 # Gathers .pgc files from dist/bin and merges them into
   8 # $PWD/$basename.pgd using pgomgr, then deletes them.
   9 # No errors if any of these files don't exist.
  10
  11 import sys, os, os.path, subprocess
  12 if not sys.platform == "win32":
  13     raise Exception("This script was only meant for Windows.")
  14
  15 def MergePGOFiles(basename, pgddir, pgcdir):
  16   """Merge pgc files produced from an instrumented binary
  17      into the pgd file for the second pass of profile-guided optimization
  18      with MSVC.  |basename| is the name of the DLL or EXE without the
  19      extension.  |pgddir| is the path that contains <basename>.pgd
  20      (should be the objdir it was built in).  |pgcdir| is the path
  21      containing basename!N.pgc files, which is probably dist/bin.
  22      Calls pgomgr to merge each pgc file into the pgd, then deletes
  23      the pgc files."""
  24   if not os.path.isdir(pgddir) or not os.path.isdir(pgcdir):
  25     return
  26   pgdfile = os.path.abspath(os.path.join(pgddir, basename + ".pgd"))
  27   if not os.path.isfile(pgdfile):
  28     return
  29   for file in os.listdir(pgcdir):
  30     if file.startswith(basename+"!") and file.endswith(".pgc"):
  31       try:
  32         pgcfile = os.path.normpath(os.path.join(pgcdir, file))
  33         subprocess.call(['pgomgr', '-merge',
  34                          pgcfile,
  35                          pgdfile])
  36         os.remove(pgcfile)
  37       except OSError:
  38         pass
  39
  40 if __name__ == '__main__':
  41   if len(sys.argv) != 3:
  42       print >>sys.stderr, "Usage: pgomerge.py <binary basename> <dist/bin>"
  43       sys.exit(1)
  44   MergePGOFiles(sys.argv[1], os.getcwd(), sys.argv[2])