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      1 # Copyright 2012 the V8 project authors. All rights reserved.
      2 # Redistribution and use in source and binary forms, with or without
      3 # modification, are permitted provided that the following conditions are
      4 # met:
      5 #
      6 #     * Redistributions of source code must retain the above copyright
      7 #       notice, this list of conditions and the following disclaimer.
      8 #     * Redistributions in binary form must reproduce the above
      9 #       copyright notice, this list of conditions and the following
     10 #       disclaimer in the documentation and/or other materials provided
     11 #       with the distribution.
     12 #     * Neither the name of Google Inc. nor the names of its
     13 #       contributors may be used to endorse or promote products derived
     14 #       from this software without specific prior written permission.
     15 #
     16 # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     17 # "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
     18 # LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
     19 # A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
     20 # OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     21 # SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
     22 # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     23 # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     24 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     25 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     26 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     27 
     28 
     29 import os
     30 import subprocess
     31 import sys
     32 from threading import Timer
     33 
     34 from ..local import utils
     35 from ..objects import output
     36 
     37 
     38 SEM_INVALID_VALUE = -1
     39 SEM_NOGPFAULTERRORBOX = 0x0002  # Microsoft Platform SDK WinBase.h
     40 
     41 
     42 def Win32SetErrorMode(mode):
     43   prev_error_mode = SEM_INVALID_VALUE
     44   try:
     45     import ctypes
     46     prev_error_mode = \
     47         ctypes.windll.kernel32.SetErrorMode(mode)  #@UndefinedVariable
     48   except ImportError:
     49     pass
     50   return prev_error_mode
     51 
     52 
     53 def RunProcess(verbose, timeout, args, **rest):
     54   if verbose: print "#", " ".join(args)
     55   popen_args = args
     56   prev_error_mode = SEM_INVALID_VALUE
     57   if utils.IsWindows():
     58     popen_args = subprocess.list2cmdline(args)
     59     # Try to change the error mode to avoid dialogs on fatal errors. Don't
     60     # touch any existing error mode flags by merging the existing error mode.
     61     # See http://blogs.msdn.com/oldnewthing/archive/2004/07/27/198410.aspx.
     62     error_mode = SEM_NOGPFAULTERRORBOX
     63     prev_error_mode = Win32SetErrorMode(error_mode)
     64     Win32SetErrorMode(error_mode | prev_error_mode)
     65 
     66   env = os.environ.copy()
     67   # GTest shard information is read by the V8 tests runner. Make sure it
     68   # doesn't leak into the execution of gtests we're wrapping. Those might
     69   # otherwise apply a second level of sharding and as a result skip tests.
     70   env.pop('GTEST_TOTAL_SHARDS', None)
     71   env.pop('GTEST_SHARD_INDEX', None)
     72 
     73   try:
     74     process = subprocess.Popen(
     75       args=popen_args,
     76       stdout=subprocess.PIPE,
     77       stderr=subprocess.PIPE,
     78       env=env,
     79       **rest
     80     )
     81   except Exception as e:
     82     sys.stderr.write("Error executing: %s\n" % popen_args)
     83     raise e
     84 
     85   if (utils.IsWindows() and prev_error_mode != SEM_INVALID_VALUE):
     86     Win32SetErrorMode(prev_error_mode)
     87 
     88   def kill_process(process, timeout_result):
     89     timeout_result[0] = True
     90     try:
     91       if utils.IsWindows():
     92         if verbose:
     93           print "Attempting to kill process %d" % process.pid
     94           sys.stdout.flush()
     95         tk = subprocess.Popen(
     96             'taskkill /T /F /PID %d' % process.pid,
     97             stdout=subprocess.PIPE,
     98             stderr=subprocess.PIPE,
     99         )
    100         stdout, stderr = tk.communicate()
    101         if verbose:
    102           print "Taskkill results for %d" % process.pid
    103           print stdout
    104           print stderr
    105           print "Return code: %d" % tk.returncode
    106           sys.stdout.flush()
    107       else:
    108         process.kill()
    109     except OSError:
    110       sys.stderr.write('Error: Process %s already ended.\n' % process.pid)
    111 
    112   # Pseudo object to communicate with timer thread.
    113   timeout_result = [False]
    114 
    115   timer = Timer(timeout, kill_process, [process, timeout_result])
    116   timer.start()
    117   stdout, stderr = process.communicate()
    118   timer.cancel()
    119 
    120   return output.Output(
    121       process.returncode,
    122       timeout_result[0],
    123       stdout.decode('utf-8', 'replace').encode('utf-8'),
    124       stderr.decode('utf-8', 'replace').encode('utf-8'),
    125       process.pid,
    126   )
    127 
    128 
    129 def Execute(args, verbose=False, timeout=None):
    130   args = [ c for c in args if c != "" ]
    131   return RunProcess(verbose, timeout, args=args)
    132