82 lines
2.7 KiB
Java
82 lines
2.7 KiB
Java
/*
|
|
* 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 long reads/writes.
|
|
*/
|
|
public class Longs implements Benchmark {
|
|
|
|
/**
|
|
* Write and read long values to/from a stream. The benchmark is run in
|
|
* batches: each "batch" consists of a fixed number of read/write cycles,
|
|
* and the stream is flushed (and underlying stream buffer cleared) in
|
|
* between each batch.
|
|
* Arguments: <# batches> <# cycles per batch>
|
|
*/
|
|
public long run(String[] args) throws Exception {
|
|
int nbatches = Integer.parseInt(args[0]);
|
|
int ncycles = Integer.parseInt(args[1]);
|
|
StreamBuffer sbuf = new StreamBuffer();
|
|
ObjectOutputStream oout =
|
|
new ObjectOutputStream(sbuf.getOutputStream());
|
|
ObjectInputStream oin =
|
|
new ObjectInputStream(sbuf.getInputStream());
|
|
|
|
doReps(oout, oin, sbuf, 1, ncycles); // warmup
|
|
|
|
long start = System.currentTimeMillis();
|
|
doReps(oout, oin, sbuf, nbatches, ncycles);
|
|
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, int nbatches, int ncycles)
|
|
throws Exception
|
|
{
|
|
for (int i = 0; i < nbatches; i++) {
|
|
sbuf.reset();
|
|
for (int j = 0; j < ncycles; j++) {
|
|
oout.writeLong(0);
|
|
}
|
|
oout.flush();
|
|
for (int j = 0; j < ncycles; j++) {
|
|
oin.readLong();
|
|
}
|
|
}
|
|
}
|
|
}
|