1/*
2 *  Copyright 2014 The WebRTC Project Authors. All rights reserved.
3 *
4 *  Use of this source code is governed by a BSD-style license
5 *  that can be found in the LICENSE file in the root of the source
6 *  tree. An additional intellectual property rights grant can be found
7 *  in the file PATENTS.  All contributing project authors may
8 *  be found in the AUTHORS file in the root of the source tree.
9 */
10
11package org.appspot.apprtc.util;
12
13import android.os.Build;
14import android.util.Log;
15
16/**
17 * AppRTCUtils provides helper functions for managing thread safety.
18 */
19public final class AppRTCUtils {
20
21  private AppRTCUtils() {
22  }
23
24  /**
25   * NonThreadSafe is a helper class used to help verify that methods of a
26   * class are called from the same thread.
27   */
28  public static class NonThreadSafe {
29    private final Long threadId;
30
31    public NonThreadSafe() {
32      // Store thread ID of the creating thread.
33      threadId = Thread.currentThread().getId();
34    }
35
36   /** Checks if the method is called on the valid/creating thread. */
37    public boolean calledOnValidThread() {
38       return threadId.equals(Thread.currentThread().getId());
39    }
40  }
41
42  /** Helper method which throws an exception  when an assertion has failed. */
43  public static void assertIsTrue(boolean condition) {
44    if (!condition) {
45      throw new AssertionError("Expected condition to be true");
46    }
47  }
48
49  /** Helper method for building a string of thread information.*/
50  public static String getThreadInfo() {
51    return "@[name=" + Thread.currentThread().getName()
52        + ", id=" + Thread.currentThread().getId() + "]";
53  }
54
55  /** Information about the current build, taken from system properties. */
56  public static void logDeviceInfo(String tag) {
57    Log.d(tag, "Android SDK: " + Build.VERSION.SDK_INT + ", "
58        + "Release: " + Build.VERSION.RELEASE + ", "
59        + "Brand: " + Build.BRAND + ", "
60        + "Device: " + Build.DEVICE + ", "
61        + "Id: " + Build.ID + ", "
62        + "Hardware: " + Build.HARDWARE + ", "
63        + "Manufacturer: " + Build.MANUFACTURER + ", "
64        + "Model: " + Build.MODEL + ", "
65        + "Product: " + Build.PRODUCT);
66  }
67}
68