build/android/pylib/perf/cache_control.py - Issue 2392643003: Removes files from //build that we don't need

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

Issue 2392643003: Removes files from //build that we don't need (Closed)

Patch Set: Created 4 years, 2 months ago

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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

3 # found in the LICENSE file.

4

5 from pylib import android_commands

6 from pylib.device import device_utils

7

8 class CacheControl(object):

9 _DROP_CACHES = '/proc/sys/vm/drop_caches'

10

11 def __init__(self, device):

12 # TODO(jbudorick) Remove once telemetry gets switched over.

13 if isinstance(device, android_commands.AndroidCommands):

14 device = device_utils.DeviceUtils(device)

15 self._device = device

16

17 def DropRamCaches(self):

18 """Drops the filesystem ram caches for performance testing."""

19 self._device.RunShellCommand('sync', as_root=True)

20 self._device.WriteFile(CacheControl._DROP_CACHES, '3', as_root=True)

21

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