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/*
* 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;
/**
* Benchmark for testing speed of boolean array reads/writes.
*/
public class BooleanArrays implements Benchmark {
/**
* Write and read boolean arrays to/from a stream. The benchmark is run in
* batches, with each batch consisting of a fixed number of read/write
* cycles. The ObjectOutputStream is reset after each batch of cycles has
* completed.
* Arguments: <array size> <# batches> <# cycles per batch>
*/
public long run(String[] args) throws Exception {
int size = Integer.parseInt(args[0]);
int nbatches = Integer.parseInt(args[1]);
int ncycles = Integer.parseInt(args[2]);
boolean[][] arrays = new boolean[ncycles][size];
StreamBuffer sbuf = new StreamBuffer();
ObjectOutputStream oout =
new ObjectOutputStream(sbuf.getOutputStream());
ObjectInputStream oin =
new ObjectInputStream(sbuf.getInputStream());
doReps(oout, oin, sbuf, arrays, 1); // warmup
long start = System.currentTimeMillis();
doReps(oout, oin, sbuf, arrays, nbatches);
return System.currentTimeMillis() - start;
}
/**
* Run benchmark for given number of batches, with given number of cycles
* for each batch.
*/
void doReps(ObjectOutputStream oout, ObjectInputStream oin,
StreamBuffer sbuf, boolean[][] arrays, int nbatches)
throws Exception
{
int ncycles = arrays.length;
for (int i = 0; i < nbatches; i++) {
sbuf.reset();
oout.reset();
for (int j = 0; j < ncycles; j++) {
oout.writeObject(arrays[j]);
}
oout.flush();
for (int j = 0; j < ncycles; j++) {
oin.readObject();
}
}
}
}
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