adb_logcat_printer.py 文件源码

def ShutdownLogcatMonitor(base_dir, logger):
  """Attempts to shutdown adb_logcat_monitor and blocks while waiting."""
  try:
    monitor_pid_path = os.path.join(base_dir, 'LOGCAT_MONITOR_PID')
    with open(monitor_pid_path) as f:
      monitor_pid = int(f.readline())

    logger.info('Sending SIGTERM to %d', monitor_pid)
    os.kill(monitor_pid, signal.SIGTERM)
    i = 0
    while True:
      time.sleep(.2)
      if not os.path.exists(monitor_pid_path):
        return
      if not os.path.exists('/proc/%d' % monitor_pid):
        logger.warning('Monitor (pid %d) terminated uncleanly?', monitor_pid)
        return
      logger.info('Waiting for logcat process to terminate.')
      i += 1
      if i >= 10:
        logger.warning('Monitor pid did not terminate. Continuing anyway.')
        return

  except (ValueError, IOError, OSError):
    logger.exception('Error signaling logcat monitor - continuing')