1 /*
2  * Copyright (C) 2010 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 
17 package com.android.gallery3d.ui;
18 
19 import android.os.Handler;
20 import android.os.Message;
21 
22 import com.android.gallery3d.common.Utils;
23 
24 public class SynchronizedHandler extends Handler {
25 
26     private final GLRoot mRoot;
27 
SynchronizedHandler(GLRoot root)28     public SynchronizedHandler(GLRoot root) {
29         mRoot = Utils.checkNotNull(root);
30     }
31 
32     @Override
dispatchMessage(Message message)33     public void dispatchMessage(Message message) {
34         mRoot.lockRenderThread();
35         try {
36             super.dispatchMessage(message);
37         } finally {
38             mRoot.unlockRenderThread();
39         }
40     }
41 }
42