ScalableTimeout.java revision a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7 
1// Copyright 2012 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
5package org.chromium.base.test.util;
6
7/**
8 * Utility class for scaling various timeouts by a common factor.
9 * For example, to run tests under Valgrind, you might want the following:
10 *   adb shell "echo 20.0 > /data/local/tmp/chrome_timeout_scale"
11 */
12public class ScalableTimeout {
13    private static Double sTimeoutScale = null;
14    private static final String PROPERTY_FILE = "/data/local/tmp/chrome_timeout_scale";
15
16    public static long ScaleTimeout(long timeout) {
17        if (sTimeoutScale == null) {
18            try {
19                char[] data = TestFileUtil.readUtf8File(PROPERTY_FILE, 32);
20                sTimeoutScale = Double.parseDouble(new String(data));
21            } catch (Exception e) {
22                // NumberFormatException, FileNotFoundException, IOException
23                sTimeoutScale = 1.0;
24            }
25        }
26        return (long)(timeout * sTimeoutScale);
27    }
28}
29