/*
* Copyright (c) 2001-2007 Sun Microsystems, Inc. All rights reserved.
*
* The Sun Project JXTA(TM) Software License
*
* 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 Sun Microsystems, Inc. for JXTA(TM) technology."
* Alternately, this acknowledgment may appear in the software itself, if
* and wherever such third-party acknowledgments normally appear.
*
* 4. The names "Sun", "Sun Microsystems, Inc.", "JXTA" and "Project JXTA" must
* not be used to endorse or promote products derived from this software
* without prior written permission. For written permission, please contact
* Project JXTA at http://www.jxta.org.
*
* 5. Products derived from this software may not be called "JXTA", nor may
* "JXTA" appear in their name, without prior written permission of Sun.
*
* 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 SUN
* MICROSYSTEMS 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.
*
* JXTA is a registered trademark of Sun Microsystems, Inc. in the United
* States and other countries.
*
* Please see the license information page at :
* <http://www.jxta.org/project/www/license.html> for instructions on use of
* the license in source files.
*
* ====================================================================
*
* This software consists of voluntary contributions made by many individuals
* on behalf of Project JXTA. For more information on Project JXTA, please see
* http://www.jxta.org.
*
* This license is based on the BSD license adopted by the Apache Foundation.
*/
package net.jxta.endpoint;
import java.io.ByteArrayOutputStream;
import java.io.InputStream;
import java.io.OutputStream;
import junit.framework.*;
import net.jxta.document.MimeMediaType;
import net.jxta.endpoint.ByteArrayMessageElement;
import net.jxta.endpoint.MessageElement;
import net.jxta.endpoint.WireFormatMessage;
import net.jxta.endpoint.WireFormatMessageFactory;
import net.jxta.util.DevNullOutputStream;
/**
*
* @author mike
*/
public class SerializationPerformanceTest extends TestCase {
private static final MimeMediaType appMsg = new MimeMediaType("application/x-jxta-msg");
public SerializationPerformanceTest(java.lang.String testName) {
super(testName);
}
public static void main(java.lang.String[] args) {
junit.textui.TestRunner.run(suite());
System.err.flush();
System.out.flush();
}
public static Test suite() {
TestSuite suite = new TestSuite(SerializationPerformanceTest.class);
return suite;
}
public void testSerialPerformance() {
try {
Message msg = new Message();
WireFormatMessage init = WireFormatMessageFactory.toWire(msg, appMsg, null);
final int startCount = 1;
final int endCount = 250;
final int stride = 10;
final int elementSize = 256;
final int repeats = 250;
for (int count = 1; count < endCount; count += stride) {
System.gc();
System.gc();
MessageElement newElem = new ByteArrayMessageElement(Integer.toString(count), null, new byte[elementSize], null);
long beforeAdd = System.currentTimeMillis();
long beforeSerial = 0;
long atEnd = 0;
for (int repeat = 1; repeat <= repeats; repeat++) {
msg.addMessageElement(newElem);
msg.removeMessageElement(newElem);
}
msg.addMessageElement(newElem);
if (count >= startCount) {
beforeSerial = System.currentTimeMillis();
for (int repeat = 1; repeat <= repeats; repeat++) {
OutputStream out = new ByteArrayOutputStream();
WireFormatMessage serialed = WireFormatMessageFactory.toWire(msg, appMsg, null);
serialed.sendToStream(out);
}
}
atEnd = System.currentTimeMillis();
long addCost;
long serialCost;
if (beforeSerial != 0) {
addCost = beforeSerial - beforeAdd;
serialCost = atEnd - beforeSerial;
} else {
addCost = atEnd - beforeAdd;
serialCost = atEnd - atEnd;
}
System.err.println(count + "," + addCost + "," + serialCost);
}
} catch (Throwable caught) {
caught.printStackTrace();
fail("exception thrown : " + caught.getMessage());
}
}
}