98 lines
3.2 KiB
Java
98 lines
3.2 KiB
Java
/*
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* Copyright (c) 1999, 2008, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/*
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*
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*/
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package bench.serial;
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import bench.Benchmark;
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import java.io.ObjectInputStream;
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import java.io.ObjectOutputStream;
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import java.io.Serializable;
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/**
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* Benchmark for testing speed of reads/writes of repeated objects.
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*/
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public class RepeatObjs implements Benchmark {
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static class Node implements Serializable {
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}
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/**
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* Write and read repeated objects to/from a stream. The benchmark is run
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* for a given number of batches. Within each batch, a set of objects
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* is written to and read from the stream. The set of objects remains the
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* same between batches (and the serialization streams are not reset) in
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* order to test the speed of object -> wire handle lookup, and vice versa.
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* Arguments: <# objects> <# cycles>
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*/
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public long run(String[] args) throws Exception {
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int size = Integer.parseInt(args[0]);
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int nbatches = Integer.parseInt(args[1]);
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Node[] objs = genObjs(size);
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StreamBuffer sbuf = new StreamBuffer();
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ObjectOutputStream oout =
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new ObjectOutputStream(sbuf.getOutputStream());
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ObjectInputStream oin =
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new ObjectInputStream(sbuf.getInputStream());
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doReps(oout, oin, sbuf, objs, 1); // warmup
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long start = System.currentTimeMillis();
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doReps(oout, oin, sbuf, objs, nbatches);
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return System.currentTimeMillis() - start;
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}
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/**
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* Generate objects.
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*/
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Node[] genObjs(int nobjs) {
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Node[] objs = new Node[nobjs];
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for (int i = 0; i < nobjs; i++)
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objs[i] = new Node();
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return objs;
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}
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/**
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* Run benchmark for given number of batches.
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*/
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void doReps(ObjectOutputStream oout, ObjectInputStream oin,
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StreamBuffer sbuf, Node[] objs, int nbatches)
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throws Exception
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{
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int nobjs = objs.length;
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for (int i = 0; i < nbatches; i++) {
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sbuf.reset();
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for (int j = 0; j < nobjs; j++) {
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oout.writeObject(objs[j]);
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}
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oout.flush();
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for (int j = 0; j < nobjs; j++) {
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oin.readObject();
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}
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}
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}
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}
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