1/*
2 * Copyright (C) 2016 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License
15 */
16
17package com.android.systemui.util;
18
19import android.os.Looper;
20
21/**
22 * Helper providing common assertions.
23 */
24public class Assert {
25
26    public static void isMainThread() {
27        if (!Looper.getMainLooper().isCurrentThread()) {
28            throw new IllegalStateException("should be called from the main thread.");
29        }
30    }
31
32    public static void isNotMainThread() {
33        if (Looper.getMainLooper().isCurrentThread()) {
34            throw new IllegalStateException("should not be called from the main thread.");
35        }
36    }
37}
38