1 /*
2  * Copyright (C) 2008 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.commands.monkey;
18 
19 import java.util.LinkedList;
20 import java.util.Random;
21 
22 /**
23  * class for keeping a monkey event queue
24  */
25 @SuppressWarnings("serial")
26 public class MonkeyEventQueue extends LinkedList<MonkeyEvent> {
27 
28     private Random mRandom;
29     private long mThrottle;
30     private boolean mRandomizeThrottle;
31 
MonkeyEventQueue(Random random, long throttle, boolean randomizeThrottle)32     public MonkeyEventQueue(Random random, long throttle, boolean randomizeThrottle) {
33         super();
34         mRandom = random;
35         mThrottle = throttle;
36         mRandomizeThrottle = randomizeThrottle;
37     }
38 
39     @Override
addLast(MonkeyEvent e)40     public void addLast(MonkeyEvent e) {
41         super.add(e);
42         if (e.isThrottlable()) {
43             long throttle = mThrottle;
44             if (mRandomizeThrottle && (mThrottle > 0)) {
45                 throttle = mRandom.nextLong();
46                 if (throttle < 0) {
47                     throttle = -throttle;
48                 }
49                 throttle %= mThrottle;
50                 ++throttle;
51             }
52             super.add(new MonkeyThrottleEvent(throttle));
53         }
54     }
55 }
56