/*
* The MIT License (MIT)
*
* Copyright (c) 2007-2015 Broad Institute
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
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;
}
}