/*

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,

 * CA 95054 USA or visit www.sun.com if you need additional information or

 * have any questions.

 */

/*

 *

 */

package bench.serial;

import bench.Benchmark;

import java.io.InputStream;

import java.io.ObjectInputStream;

import java.io.ObjectOutputStream;

import java.io.OutputStream;

import java.io.Serializable;

/**

 * Benchmark for testing speed of ObjectOutputStream/ObjectInputStream

 * construction.

 */

public class Cons implements Benchmark {

    /**

     * Dummy object to write to newly constructed serialization stream.

     */

    static class Dummy implements Serializable {

    }

    /**

     * Repeatedly construct ObjectOutputStream and ObjectInputStream objects.

     * Arguments: <# repetitions>

     */

    public long run(String[] args) throws Exception {

        int reps = Integer.parseInt(args[0]);

        Dummy dummy = new Dummy();

        StreamBuffer sbuf = new StreamBuffer();

        doReps(sbuf, dummy, 1);         // warmup

        long start = System.currentTimeMillis();

        doReps(sbuf, dummy, reps);

        return System.currentTimeMillis() - start;

    }

    /**

     * Run benchmark for given number of cycles.

     */

    void doReps(StreamBuffer sbuf, Dummy dummy, int reps) throws Exception {

        OutputStream out = sbuf.getOutputStream();

        InputStream in = sbuf.getInputStream();

        for (int i = 0; i < reps; i++) {

            sbuf.reset();

            ObjectOutputStream oout = new ObjectOutputStream(out);

            oout.writeObject(dummy);

            oout.flush();

            ObjectInputStream oin = new ObjectInputStream(in);

            oin.readObject();

        }

    }

}