Upstream version 6.35.121.0
[platform/framework/web/crosswalk.git] / src / build / android / host_heartbeat.py
1 #!/usr/bin/env python
2 #
3 # Copyright (c) 2013 The Chromium Authors. All rights reserved.
4 # Use of this source code is governed by a BSD-style license that can be
5 # found in the LICENSE file.
6
7 """Sends a heart beat pulse to the currently online Android devices.
8 This heart beat lets the devices know that they are connected to a host.
9 """
10 # pylint: disable=W0702
11
12 import sys
13 import time
14
15 from pylib import android_commands
16
17 PULSE_PERIOD = 20
18
19 def main():
20   while True:
21     try:
22       devices = android_commands.GetAttachedDevices()
23       for device in devices:
24         android_cmd = android_commands.AndroidCommands(device)
25         android_cmd.RunShellCommand('touch /sdcard/host_heartbeat')
26     except:
27       # Keep the heatbeat running bypassing all errors.
28       pass
29     time.sleep(PULSE_PERIOD)
30
31
32 if __name__ == '__main__':
33   sys.exit(main())