// Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.

import "dart:io";
import "dart:async";

void main(args) {
  // This process should die if it never receives a signal.
  var timeout = new Timer(new Duration(seconds: 25), () => exit(1));
  for (var arg in args) {
    var signal;
    switch (arg) {
      case 'SIGHUP': signal = ProcessSignal.SIGHUP; break;
      case 'SIGINT': signal = ProcessSignal.SIGINT; break;
      case 'SIGTERM': signal = ProcessSignal.SIGTERM; break;
      case 'SIGUSR1': signal = ProcessSignal.SIGUSR1; break;
      case 'SIGUSR2': signal = ProcessSignal.SIGUSR2; break;
      case 'SIGWINCH': signal = ProcessSignal.SIGWINCH; break;
    }
    signal.watch().first.then((s) {
      if (signal != s) exit(1);
      if (signal.toString() != arg) exit(1);
      print(signal);
      exit(0);
    });
  }
  print("ready");
}