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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;
import java.io.ObjectStreamClass;
import java.lang.reflect.InvocationHandler;
import java.lang.reflect.Proxy;
/**
* Benchmark for testing speed of proxy class descriptor reads/writes.
*/
public class ProxyClassDesc implements Benchmark {
static interface A1 {};
static interface A2 {};
static interface A3 {};
static interface A4 {};
static interface A5 {};
static interface B1 {};
static interface B2 {};
static interface B3 {};
static interface B4 {};
static interface B5 {};
static interface C1 {};
static interface C2 {};
static interface C3 {};
static interface C4 {};
static interface C5 {};
/**
* Write and read proxy class descriptors to/from a stream.
* Arguments: <# cycles>
*/
public long run(String[] args) throws Exception {
int ncycles = Integer.parseInt(args[0]);
StreamBuffer sbuf = new StreamBuffer();
ObjectOutputStream oout =
new ObjectOutputStream(sbuf.getOutputStream());
ObjectInputStream oin =
new ObjectInputStream(sbuf.getInputStream());
ObjectStreamClass[] descs = genDescs();
doReps(oout, oin, sbuf, descs, 1); // warmup
long start = System.currentTimeMillis();
doReps(oout, oin, sbuf, descs, ncycles);
return System.currentTimeMillis() - start;
}
/**
* Generate proxy class descriptors.
*/
ObjectStreamClass[] genDescs() {
ClassLoader ldr = ProxyClassDesc.class.getClassLoader();
Class[] ifaces = new Class[3];
Class[] a =
new Class[] { A1.class, A2.class, A3.class, A4.class, A5.class };
Class[] b =
new Class[] { B1.class, B2.class, B3.class, B4.class, B5.class };
Class[] c =
new Class[] { C1.class, C2.class, C3.class, C4.class, C5.class };
ObjectStreamClass[] descs =
new ObjectStreamClass[a.length * b.length * c.length];
int n = 0;
for (int i = 0; i < a.length; i++) {
ifaces[0] = a[i];
for (int j = 0; j < b.length; j++) {
ifaces[1] = b[j];
for (int k = 0; k < c.length; k++) {
ifaces[2] = c[k];
Class proxyClass = Proxy.getProxyClass(ldr, ifaces);
descs[n++] = ObjectStreamClass.lookup(proxyClass);
}
}
}
return descs;
}
/**
* Run benchmark for given number of cycles.
*/
void doReps(ObjectOutputStream oout, ObjectInputStream oin,
StreamBuffer sbuf, ObjectStreamClass[] descs, int ncycles)
throws Exception
{
int ndescs = descs.length;
for (int i = 0; i < ncycles; i++) {
sbuf.reset();
oout.reset();
for (int j = 0; j < ndescs; j++) {
oout.writeObject(descs[j]);
}
oout.flush();
for (int j = 0; j < ndescs; j++) {
oin.readObject();
}
}
}
}
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