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/*
* Copyright (C) 2013 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
public class Main {
private static final int TEST_TIME = 5;
public static void main(String[] args) {
System.out.println("Running (" + TEST_TIME + " seconds) ...");
InfiniteForLoop forLoop = new InfiniteForLoop();
InfiniteWhileLoop whileLoop = new InfiniteWhileLoop();
InfiniteDoWhileLoop doWhileLoop = new InfiniteDoWhileLoop();
MakeGarbage garbage = new MakeGarbage();
forLoop.start();
whileLoop.start();
doWhileLoop.start();
garbage.start();
for (int i = 0; i < TEST_TIME; i++) {
Runtime.getRuntime().gc();
System.out.println(".");
sleep(1000);
}
forLoop.stopNow();
whileLoop.stopNow();
doWhileLoop.stopNow();
garbage.stopNow();
System.out.println("Done.");
}
public static void sleep(int ms) {
try {
Thread.sleep(ms);
} catch (InterruptedException ie) {
System.err.println("sleep was interrupted");
}
}
}
class InfiniteWhileLoop extends Thread {
volatile private boolean keepGoing = true;
public void run() {
int i = 0;
while (keepGoing) {
i++;
}
}
public void stopNow() {
keepGoing = false;
}
}
class InfiniteDoWhileLoop extends Thread {
volatile private boolean keepGoing = true;
public void run() {
int i = 0;
do {
i++;
} while (keepGoing);
}
public void stopNow() {
keepGoing = false;
}
}
class InfiniteForLoop extends Thread {
int count = 100000;
volatile private boolean keepGoing = true;
public void run() {
int i = 0;
for (int j = 0; keepGoing; j++) {
i += j;
}
}
public void stopNow() {
keepGoing = false;
}
}
class MakeGarbage extends Thread {
volatile private boolean keepGoing = true;
public void run() {
while (keepGoing) {
byte[] garbage = new byte[100000];
}
}
public void stopNow() {
keepGoing = false;
}
}
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