121 lines
3.8 KiB
Java
121 lines
3.8 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;
|
|
import java.io.Serializable;
|
|
|
|
/**
|
|
* Benchmark for testing speed of object array reads/writes.
|
|
*/
|
|
public class ObjArrays implements Benchmark {
|
|
|
|
static class Node implements Serializable {
|
|
boolean z;
|
|
byte b;
|
|
char c;
|
|
short s;
|
|
int i;
|
|
float f;
|
|
long j;
|
|
double d;
|
|
String str = "bodega";
|
|
Object parent, left, right;
|
|
|
|
Node(Object parent, int depth) {
|
|
this.parent = parent;
|
|
if (depth > 0) {
|
|
left = new Node(this, depth - 1);
|
|
right = new Node(this, depth - 1);
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Write and read object 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]);
|
|
Node[][] arrays = genArrays(size, ncycles);
|
|
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;
|
|
}
|
|
|
|
/**
|
|
* Generate object arrays.
|
|
*/
|
|
Node[][] genArrays(int size, int narrays) {
|
|
Node[][] arrays = new Node[narrays][size];
|
|
for (int i = 0; i < narrays; i++) {
|
|
for (int j = 0; j < size; j++) {
|
|
arrays[i][j] = new Node(null, 0);
|
|
}
|
|
}
|
|
return arrays;
|
|
}
|
|
|
|
/**
|
|
* Run benchmark for given number of batches, with given number of cycles
|
|
* for each batch.
|
|
*/
|
|
void doReps(ObjectOutputStream oout, ObjectInputStream oin,
|
|
StreamBuffer sbuf, Node[][] 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();
|
|
}
|
|
}
|
|
}
|
|
}
|