Add basic performance test shell for testing maps
git-svn-id: https://svn.apache.org/repos/asf/jakarta/commons/proper/collections/trunk@131326 13f79535-47bb-0310-9956-ffa450edef68
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Stephen Colebourne
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/*
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* $Header: /home/jerenkrantz/tmp/commons/commons-convert/cvs/home/cvs/jakarta-commons//collections/src/test/org/apache/commons/collections/MapPerformance.java,v 1.1 2003/11/02 23:43:00 scolebourne Exp $
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* ====================================================================
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*
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* The Apache Software License, Version 1.1
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*
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* Copyright (c) 2003 The Apache Software Foundation. All rights
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* reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* 3. The end-user documentation included with the redistribution, if
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* any, must include the following acknowledgment:
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* "This product includes software developed by the
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* Apache Software Foundation (http://www.apache.org/)."
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* Alternately, this acknowledgment may appear in the software itself,
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* if and wherever such third-party acknowledgments normally appear.
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*
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* 4. The names "The Jakarta Project", "Commons", and "Apache Software
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* Foundation" must not be used to endorse or promote products derived
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* from this software without prior written permission. For written
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* permission, please contact apache@apache.org.
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*
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* 5. Products derived from this software may not be called "Apache"
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* nor may "Apache" appear in their names without prior written
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* permission of the Apache Software Foundation.
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*
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
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* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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* ====================================================================
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*
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* This software consists of voluntary contributions made by many
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* individuals on behalf of the Apache Software Foundation. For more
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* information on the Apache Software Foundation, please see
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* <http://www.apache.org/>.
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*
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*/
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package org.apache.commons.collections;
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import java.util.Collection;
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import java.util.Collections;
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import java.util.HashMap;
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import java.util.LinkedHashMap;
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import java.util.Map;
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import java.util.Set;
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import java.util.TreeMap;
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/**
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* <code>TestMapPerformance</code> is designed to perform basic Map performance tests.
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*
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* @author Stephen Colebourne
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*/
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public class MapPerformance {
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/** The total number of runs for each test */
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private static final int RUNS = 20000000;
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/**
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* Main method
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*/
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public static void main(String[] args) {
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testAll();
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}
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private static void testAll() {
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Map dummyMap = new DummyMap();
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Map hashMap = new HashMap();
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// hashMap.put("Alpha", "A");
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// hashMap.put("Beta", "B");
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// hashMap.put("Gamma", "C");
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// hashMap.put("Delta", "D");
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Map flatMap = new Flat3Map(hashMap);
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System.out.println(flatMap);
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Map unmodHashMap = Collections.unmodifiableMap(new HashMap(hashMap));
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Map fastHashMap = new FastHashMap(hashMap);
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Map treeMap = new TreeMap(hashMap);
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Map seqMap = new SequencedHashMap(hashMap);
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Map linkedMap = new LinkedHashMap(hashMap);
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Map syncMap = Collections.unmodifiableMap(new HashMap(hashMap));
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Map bucketMap = new StaticBucketMap();
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bucketMap.putAll(hashMap);
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Map doubleMap = new DoubleOrderedMap(hashMap);
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// dummy is required as the VM seems to hotspot the first call to the
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// test method with the given type
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test(dummyMap, " Dummy ");
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test(dummyMap, " Dummy ");
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test(dummyMap, " Dummy ");
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test(flatMap, " Flat3 ");
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test(hashMap, " HashMap ");
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test(flatMap, " Flat3 ");
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test(flatMap, " Flat3 ");
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test(flatMap, " Flat3 ");
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test(hashMap, " HashMap ");
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test(hashMap, " HashMap ");
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test(hashMap, " HashMap ");
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// test(treeMap, " TreeMap ");
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// test(treeMap, " TreeMap ");
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// test(treeMap, " TreeMap ");
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// test(unmodHashMap, "Unmod(HashMap) ");
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// test(unmodHashMap, "Unmod(HashMap) ");
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// test(unmodHashMap, "Unmod(HashMap) ");
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//
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// test(syncMap, " Sync(HashMap) ");
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// test(syncMap, " Sync(HashMap) ");
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// test(syncMap, " Sync(HashMap) ");
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//
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// test(fastHashMap, " FastHashMap ");
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// test(fastHashMap, " FastHashMap ");
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// test(fastHashMap, " FastHashMap ");
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//
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// test(seqMap, " SeqHashMap ");
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// test(seqMap, " SeqHashMap ");
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// test(seqMap, " SeqHashMap ");
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//
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// test(linkedMap, " LinkedHashMap ");
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// test(linkedMap, " LinkedHashMap ");
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// test(linkedMap, " LinkedHashMap ");
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//
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// test(bucketMap, " BucketMap ");
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// test(bucketMap, " BucketMap ");
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// test(bucketMap, " BucketMap ");
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//
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// test(doubleMap, " DoubleMap ");
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// test(doubleMap, " DoubleMap ");
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// test(doubleMap, " DoubleMap ");
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}
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private static void test(Map map, String name) {
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long start = 0, end = 0;
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int total = 0;
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start = System.currentTimeMillis();
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for (int i = RUNS; i > 0; i--) {
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// if (map.get("Alpha") != null) total++;
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// if (map.get("Beta") != null) total++;
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// if (map.get("Gamma") != null) total++;
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map.put("Alpha", "A");
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map.put("Beta", "B");
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map.put("Beta", "C");
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map.put("Gamma", "D");
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// map.remove("Gamma");
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// map.remove("Beta");
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// map.remove("Alpha");
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map.put("Delta", "E");
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map.clear();
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}
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end = System.currentTimeMillis();
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System.out.println(name + (end - start));
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}
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// ----------------------------------------------------------------------
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private static class DummyMap implements Map {
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public void clear() {
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}
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public boolean containsKey(Object key) {
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return false;
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}
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public boolean containsValue(Object value) {
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return false;
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}
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public Set entrySet() {
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return null;
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}
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public Object get(Object key) {
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return null;
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}
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public boolean isEmpty() {
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return false;
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}
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public Set keySet() {
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return null;
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}
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public Object put(Object key, Object value) {
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return null;
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}
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public void putAll(Map t) {
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}
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public Object remove(Object key) {
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return null;
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}
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public int size() {
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return 0;
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}
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public Collection values() {
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return null;
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}
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}
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}
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