scolebourne 2003/11/02 15:43:00
Added: collections/src/test/org/apache/commons/collections
MapPerformance.java
Log:
Add basic performance test shell for testing maps
Revision Changes Path
1.1
jakarta-commons/collections/src/test/org/apache/commons/collections/MapPerformance.java
Index: MapPerformance.java
===================================================================
/*
* $Header:
/home/cvs/jakarta-commons/collections/src/test/org/apache/commons/collections/MapPerformance.java,v
1.1 2003/11/02 23:43:00 scolebourne Exp $
* ====================================================================
*
* The Apache Software License, Version 1.1
*
* Copyright (c) 2003 The Apache Software Foundation. All rights
* reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. The end-user documentation included with the redistribution, if
* any, must include the following acknowledgment:
* "This product includes software developed by the
* Apache Software Foundation (http://www.apache.org/)."
* Alternately, this acknowledgment may appear in the software itself,
* if and wherever such third-party acknowledgments normally appear.
*
* 4. The names "The Jakarta Project", "Commons", and "Apache Software
* Foundation" must not be used to endorse or promote products derived
* from this software without prior written permission. For written
* permission, please contact [EMAIL PROTECTED]
*
* 5. Products derived from this software may not be called "Apache"
* nor may "Apache" appear in their names without prior written
* permission of the Apache Software Foundation.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
* ====================================================================
*
* This software consists of voluntary contributions made by many
* individuals on behalf of the Apache Software Foundation. For more
* information on the Apache Software Foundation, please see
* <http://www.apache.org/>.
*
*/
package org.apache.commons.collections;
import java.util.Collection;
import java.util.Collections;
import java.util.HashMap;
import java.util.LinkedHashMap;
import java.util.Map;
import java.util.Set;
import java.util.TreeMap;
/**
* <code>TestMapPerformance</code> is designed to perform basic Map performance
tests.
*
* @author Stephen Colebourne
*/
public class MapPerformance {
/** The total number of runs for each test */
private static final int RUNS = 20000000;
/**
* Main method
*/
public static void main(String[] args) {
testAll();
}
private static void testAll() {
Map dummyMap = new DummyMap();
Map hashMap = new HashMap();
// hashMap.put("Alpha", "A");
// hashMap.put("Beta", "B");
// hashMap.put("Gamma", "C");
// hashMap.put("Delta", "D");
Map flatMap = new Flat3Map(hashMap);
System.out.println(flatMap);
Map unmodHashMap = Collections.unmodifiableMap(new HashMap(hashMap));
Map fastHashMap = new FastHashMap(hashMap);
Map treeMap = new TreeMap(hashMap);
Map seqMap = new SequencedHashMap(hashMap);
Map linkedMap = new LinkedHashMap(hashMap);
Map syncMap = Collections.unmodifiableMap(new HashMap(hashMap));
Map bucketMap = new StaticBucketMap();
bucketMap.putAll(hashMap);
Map doubleMap = new DoubleOrderedMap(hashMap);
// dummy is required as the VM seems to hotspot the first call to the
// test method with the given type
test(dummyMap, " Dummy ");
test(dummyMap, " Dummy ");
test(dummyMap, " Dummy ");
test(flatMap, " Flat3 ");
test(hashMap, " HashMap ");
test(flatMap, " Flat3 ");
test(flatMap, " Flat3 ");
test(flatMap, " Flat3 ");
test(hashMap, " HashMap ");
test(hashMap, " HashMap ");
test(hashMap, " HashMap ");
// test(treeMap, " TreeMap ");
// test(treeMap, " TreeMap ");
// test(treeMap, " TreeMap ");
// test(unmodHashMap, "Unmod(HashMap) ");
// test(unmodHashMap, "Unmod(HashMap) ");
// test(unmodHashMap, "Unmod(HashMap) ");
//
// test(syncMap, " Sync(HashMap) ");
// test(syncMap, " Sync(HashMap) ");
// test(syncMap, " Sync(HashMap) ");
//
// test(fastHashMap, " FastHashMap ");
// test(fastHashMap, " FastHashMap ");
// test(fastHashMap, " FastHashMap ");
//
// test(seqMap, " SeqHashMap ");
// test(seqMap, " SeqHashMap ");
// test(seqMap, " SeqHashMap ");
//
// test(linkedMap, " LinkedHashMap ");
// test(linkedMap, " LinkedHashMap ");
// test(linkedMap, " LinkedHashMap ");
//
// test(bucketMap, " BucketMap ");
// test(bucketMap, " BucketMap ");
// test(bucketMap, " BucketMap ");
//
// test(doubleMap, " DoubleMap ");
// test(doubleMap, " DoubleMap ");
// test(doubleMap, " DoubleMap ");
}
private static void test(Map map, String name) {
long start = 0, end = 0;
int total = 0;
start = System.currentTimeMillis();
for (int i = RUNS; i > 0; i--) {
// if (map.get("Alpha") != null) total++;
// if (map.get("Beta") != null) total++;
// if (map.get("Gamma") != null) total++;
map.put("Alpha", "A");
map.put("Beta", "B");
map.put("Beta", "C");
map.put("Gamma", "D");
// map.remove("Gamma");
// map.remove("Beta");
// map.remove("Alpha");
map.put("Delta", "E");
map.clear();
}
end = System.currentTimeMillis();
System.out.println(name + (end - start));
}
// ----------------------------------------------------------------------
private static class DummyMap implements Map {
public void clear() {
}
public boolean containsKey(Object key) {
return false;
}
public boolean containsValue(Object value) {
return false;
}
public Set entrySet() {
return null;
}
public Object get(Object key) {
return null;
}
public boolean isEmpty() {
return false;
}
public Set keySet() {
return null;
}
public Object put(Object key, Object value) {
return null;
}
public void putAll(Map t) {
}
public Object remove(Object key) {
return null;
}
public int size() {
return 0;
}
public Collection values() {
return null;
}
}
}
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