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Side by Side Diff: build/android/pylib/perf/cache_control.py

Issue 338353004: [Android] Switch KillAll, StartActivity, and BroadcastIntent to DeviceUtils. (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: appeasing windows Created 6 years, 6 months ago
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1 # Copyright 2013 The Chromium Authors. All rights reserved. 1 # Copyright 2013 The Chromium Authors. All rights reserved.
2 # Use of this source code is governed by a BSD-style license that can be 2 # Use of this source code is governed by a BSD-style license that can be
3 # found in the LICENSE file. 3 # found in the LICENSE file.
4 4
5 from pylib import android_commands 5 from pylib import android_commands
6 from pylib.device import device_utils 6 from pylib.device import device_utils
7 7
8 class CacheControl(object): 8 class CacheControl(object):
9 _DROP_CACHES = '/proc/sys/vm/drop_caches' 9 _DROP_CACHES = '/proc/sys/vm/drop_caches'
10 10
11 def __init__(self, device): 11 def __init__(self, device):
12 # TODO(jbudorick) Remove once telemetry gets switched over. 12 # TODO(jbudorick) Remove once telemetry gets switched over.
13 if isinstance(device, android_commands.AndroidCommands): 13 if isinstance(device, android_commands.AndroidCommands):
14 device = device_utils.DeviceUtils(device) 14 device = device_utils.DeviceUtils(device)
15 self._device = device 15 self._device = device
16 16
17 def DropRamCaches(self): 17 def DropRamCaches(self):
18 """Drops the filesystem ram caches for performance testing.""" 18 """Drops the filesystem ram caches for performance testing."""
19 self._device.RunShellCommand('sync', root=True) 19 self._device.RunShellCommand('sync', as_root=True)
20 self._device.old_interface.SetProtectedFileContents( 20 self._device.old_interface.SetProtectedFileContents(
21 CacheControl._DROP_CACHES, '3') 21 CacheControl._DROP_CACHES, '3')
22 22
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