get_toolchain_if_necessary.py 文件源码

def EnableCrashDumpCollection():
  """Tell Windows Error Reporting to record crash dumps so that we can diagnose
  linker crashes and other toolchain failures. Documented at:
  https://msdn.microsoft.com/en-us/library/windows/desktop/bb787181.aspx
  """
  if sys.platform == 'win32' and os.environ.get('CHROME_HEADLESS') == '1':
    key_name = r'SOFTWARE\Microsoft\Windows\Windows Error Reporting'
    try:
      key = winreg.CreateKeyEx(winreg.HKEY_LOCAL_MACHINE, key_name, 0,
                               winreg.KEY_WOW64_64KEY | winreg.KEY_ALL_ACCESS)
      # Merely creating LocalDumps is sufficient to enable the defaults.
      winreg.CreateKey(key, "LocalDumps")
      # Disable the WER UI, as documented here:
      # https://msdn.microsoft.com/en-us/library/windows/desktop/bb513638.aspx
      winreg.SetValueEx(key, "DontShowUI", 0, winreg.REG_DWORD, 1)
    # Trap OSError instead of WindowsError so pylint will succeed on Linux.
    # Catching errors is important because some build machines are not elevated
    # and writing to HKLM requires elevation.
    except OSError:
      pass