build/link.py

   1 # This Source Code Form is subject to the terms of the Mozilla Public
   2 # License, v. 2.0. If a copy of the MPL was not distributed with this
   3 # file, You can obtain one at http://mozilla.org/MPL/2.0/.
   4
   5 from __future__ import with_statement
   6 import os, subprocess, sys, threading, time
   7 from win32 import procmem
   8
   9 def measure_vsize_threadfunc(proc, output_file):
  10     """
  11     Measure the virtual memory usage of |proc| at regular intervals
  12     until it exits, then print the maximum value and write it to
  13     |output_file|.
  14     """
  15     maxvsize = 0
  16     while proc.returncode is None:
  17         maxvsize, vsize = procmem.get_vmsize(proc._handle)
  18         time.sleep(0.5)
  19     print "TinderboxPrint: linker max vsize: %d" % maxvsize
  20     with open(output_file, "w") as f:
  21         f.write("%d\n" % maxvsize)
  22
  23 def measure_link_vsize(output_file, args):
  24     """
  25     Execute |args|, and measure the maximum virtual memory usage of the process,
  26     printing it to stdout when finished.
  27     """
  28     proc = subprocess.Popen(args)
  29     t = threading.Thread(target=measure_vsize_threadfunc,
  30                          args=(proc, output_file))
  31     t.start()
  32     # Wait for the linker to finish.
  33     exitcode = proc.wait()
  34     # ...and then wait for the background thread to finish.
  35     t.join()
  36     return exitcode
  37
  38 if __name__ == "__main__":
  39     if sys.platform != "win32":
  40         print >>sys.stderr, "link.py is only for use on Windows!"
  41         sys.exit(1)
  42     if len(sys.argv) < 3:
  43         print >>sys.stderr, "Usage: link.py <output filename> <commandline>"
  44         sys.exit(1)
  45     sys.exit(measure_link_vsize(sys.argv[1], sys.argv[2:]))