/*
* Copyright (c) 2007-2012 The Broad Institute, Inc.
* SOFTWARE COPYRIGHT NOTICE
* This software and its documentation are the copyright of the Broad Institute, Inc. All rights are reserved.
*
* This software is supplied without any warranty or guaranteed support whatsoever. The Broad Institute is not responsible for its use, misuse, or functionality.
*
* This software is licensed under the terms of the GNU Lesser General Public License (LGPL),
* Version 2.1 which is available at http://www.opensource.org/licenses/lgpl-2.1.php.
*/
package org.broad.igv.util;
import org.broad.igv.util.collections.IntArrayList;
import org.junit.Before;
import org.junit.Ignore;
import org.junit.Test;
import java.util.ArrayList;
import static org.junit.Assert.assertTrue;
/**
* Created by IntelliJ IDEA.
* User: jrobinso
* Date: Jun 18, 2010
* Time: 7:55:32 PM
* To change this template use File | Settings | File Templates.
*/
public class ArrayMemoryTest {
private static final int size = 10000000;
@Before
public void setUp() throws Exception {
System.gc();
Runtime.getRuntime().gc();
}
//GetObjectSize is not particularly accurate, because it's not recursive
//TODO 3rd party implementations of things like IntArrayList exist. Use them?
/**NOTE:
* RuntimeUtils has to be put in a jar and included as instrumentation in the
junit tests, as in:
<jvmarg value="-javaagent:${testlib.dir}/RuntimeUtils.jar"/>
for this to work.
**/
@Ignore
@Test
public void compareMemory() throws Exception {
IntArrayList tmp = makeIntArrayList();
ArrayList<Integer> tmp2 = makeArrayList();
long memIntArrList = 0;
long memArrList = 0;
for (int ii = 0; ii < size; ii++) {
memArrList += JavaAgent.getObjectSize(tmp2.get(ii));
memIntArrList += JavaAgent.getObjectSize(tmp.get(ii));
}
assertTrue(memIntArrList < memArrList);
}
public static IntArrayList makeIntArrayList() {
IntArrayList list = new IntArrayList();
for (int i = 0; i < size; i++) {
list.add(i);
}
return list;
}
public static ArrayList<Integer> makeArrayList() {
ArrayList<Integer> list = new ArrayList<Integer>();
for (int i = 0; i < size; i++) {
list.add(i);
}
return list;
}
}