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