Android: uses taskset when starting adb.

build/android/pylib/android_commands.py

 # Copyright (c) 2012 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 """Provides an interface to communicate with the device via the adb command.
 
 Assumes adb binary is currently on system path.
 """
 
 import collections
@@ skipping 442 matching lines @@
 
   def MakeSystemFolderWritable(self):
     """Remounts the /system folder rw."""
     out = self._adb.SendCommand('remount')
     if out.strip() != 'remount succeeded':
       raise errors.MsgException('Remount failed: %s' % out)
 
   def RestartAdbServer(self):
     """Restart the adb server."""
     self.KillAdbServer()
     self.StartAdbServer()

[frankf, 2013/08/14 18:34:11]

Looks like we ignore the return code and silently fail?

[bulach, 2013/08/14 19:23:56]

ha, good catch! it's worse than that.. :)
I tried to just check the ret code and raise an exception, but the presubmit at
build/android/buildbot/tests/bb_run_bot_test.py presubmit failed...
what happens is that kill-server and start-server are async, so they may return
"0", and yet not finish, so a subsequent pair comes along and fails...

so the "right" fix is to actually block and wait on KillAdbServer /
StartAdbServer, so that this can safely throw an error..

 
   def KillAdbServer(self):
     """Kill adb server."""
     adb_cmd = [constants.ADB_PATH, 'kill-server']
     return cmd_helper.RunCmd(adb_cmd)
 
   def StartAdbServer(self):
     """Start adb server."""
-    adb_cmd = [constants.ADB_PATH, 'start-server']
+    adb_cmd = ['taskset', '-c', '0', constants.ADB_PATH, 'start-server']
     return cmd_helper.RunCmd(adb_cmd)
 
   def WaitForSystemBootCompleted(self, wait_time):
     """Waits for targeted system's boot_completed flag to be set.
 
     Args:
       wait_time: time in seconds to wait
 
     Raises:
       WaitForResponseTimedOutError if wait_time elapses and flag still not
@@ skipping 1036 matching lines @@
   """
   def __init__(self, output):
     self._output = output
 
   def write(self, data):
     data = data.replace('\r\r\n', '\n')
     self._output.write(data)
 
   def flush(self):
     self._output.flush()