llvm/test/Support/interrupts.test

   1 ## Show that SIGINT and similar signals don't cause crash messages to be
   2 ## reported.
   3 # RUN: %python %s wrapper llvm-symbolizer 2> %t.err
   4 # RUN: count 0 < %t.err
   5
   6 import os
   7 import signal
   8 import subprocess
   9 import sys
  10 import time
  11
  12 def run_symbolizer():
  13     proc = subprocess.Popen([sys.argv[2]], stdout=subprocess.PIPE, stdin=subprocess.PIPE)
  14     # Write then read some output to ensure the process has started fully.
  15     proc.stdin.write(b'foo bar\n')
  16     proc.stdin.flush()
  17     proc.stdout.readline()
  18     # Windows handles signals differently.
  19     if os.name == 'nt':
  20         os.kill(0, signal.CTRL_BREAK_EVENT)
  21     else:
  22         proc.send_signal(signal.SIGINT)
  23
  24 # On Windows, this function spawns the subprocess in its own (hidden) console,
  25 # so that signals do not interfere with the calling test. This isn't necessary
  26 # on other systems.
  27 def run_wrapper():
  28     args = [sys.executable, __file__, 'symbolizer'] + sys.argv[2:]
  29     if os.name == 'nt':
  30         startupinfo = subprocess.STARTUPINFO()
  31         startupinfo.dwFlags |= subprocess.STARTF_USESHOWWINDOW
  32         proc = subprocess.Popen(args,
  33                                 stderr=sys.stderr,
  34                                 startupinfo=startupinfo,
  35                                 creationflags=subprocess.CREATE_NEW_CONSOLE)
  36     else:
  37         proc = subprocess.Popen(args,
  38                                 stderr=subprocess.PIPE)
  39
  40 if sys.argv[1] == 'wrapper':
  41     run_wrapper()
  42 else:
  43     run_symbolizer()