| /* |
| * Copyright (c) 1999, 2008, Oracle and/or its affiliates. All rights reserved. |
| * 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| /* |
| * |
| */ |
| |
| package bench.serial; |
| |
| import bench.Benchmark; |
| import java.io.ObjectInputStream; |
| import java.io.ObjectOutputStream; |
| import java.io.Serializable; |
| |
| /** |
| * Benchmark for testing speed of reads/writes of repeated objects. |
| */ |
| public class RepeatObjs implements Benchmark { |
| |
| static class Node implements Serializable { |
| } |
| |
| /** |
| * Write and read repeated objects to/from a stream. The benchmark is run |
| * for a given number of batches. Within each batch, a set of objects |
| * is written to and read from the stream. The set of objects remains the |
| * same between batches (and the serialization streams are not reset) in |
| * order to test the speed of object -> wire handle lookup, and vice versa. |
| * Arguments: <# objects> <# cycles> |
| */ |
| public long run(String[] args) throws Exception { |
| int size = Integer.parseInt(args[0]); |
| int nbatches = Integer.parseInt(args[1]); |
| Node[] objs = genObjs(size); |
| StreamBuffer sbuf = new StreamBuffer(); |
| ObjectOutputStream oout = |
| new ObjectOutputStream(sbuf.getOutputStream()); |
| ObjectInputStream oin = |
| new ObjectInputStream(sbuf.getInputStream()); |
| |
| doReps(oout, oin, sbuf, objs, 1); // warmup |
| |
| long start = System.currentTimeMillis(); |
| doReps(oout, oin, sbuf, objs, nbatches); |
| return System.currentTimeMillis() - start; |
| } |
| |
| /** |
| * Generate objects. |
| */ |
| Node[] genObjs(int nobjs) { |
| Node[] objs = new Node[nobjs]; |
| for (int i = 0; i < nobjs; i++) |
| objs[i] = new Node(); |
| return objs; |
| } |
| |
| /** |
| * Run benchmark for given number of batches. |
| */ |
| void doReps(ObjectOutputStream oout, ObjectInputStream oin, |
| StreamBuffer sbuf, Node[] objs, int nbatches) |
| throws Exception |
| { |
| int nobjs = objs.length; |
| for (int i = 0; i < nbatches; i++) { |
| sbuf.reset(); |
| for (int j = 0; j < nobjs; j++) { |
| oout.writeObject(objs[j]); |
| } |
| oout.flush(); |
| for (int j = 0; j < nobjs; j++) { |
| oin.readObject(); |
| } |
| } |
| } |
| } |