jdk/test/java/rmi/reliability/benchmark/bench/serial/ProxyArrays.java
changeset 2 90ce3da70b43
child 309 bda219d843f6
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/test/java/rmi/reliability/benchmark/bench/serial/ProxyArrays.java	Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,123 @@
+/* 
+ * Copyright 1999 Sun Microsystems, Inc.  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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.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;
+import java.lang.reflect.Constructor;
+import java.lang.reflect.InvocationHandler;
+import java.lang.reflect.Method;
+import java.lang.reflect.Proxy;
+
+/**
+ * Benchmark for testing speed of proxy array reads/writes.
+ */
+public class ProxyArrays implements Benchmark {
+
+    static class DummyHandler implements InvocationHandler, Serializable {
+	public Object invoke(Object proxy, Method method, Object[] args)
+	    throws Throwable
+	{
+	    return null;
+	}
+    }
+    
+    static interface DummyInterface {
+	public void foo();
+    }
+
+    /**
+     * Write and read proxy 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]);
+	Proxy[][] 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 proxy arrays.
+     */
+    Proxy[][] genArrays(int size, int narrays) throws Exception {
+	Class proxyClass = 
+	    Proxy.getProxyClass(DummyInterface.class.getClassLoader(),
+		    new Class[] { DummyInterface.class });
+	Constructor proxyCons = 
+	    proxyClass.getConstructor(new Class[] { InvocationHandler.class });
+	Object[] consArgs = new Object[] { new DummyHandler() };
+	Proxy[][] arrays = new Proxy[narrays][size];
+	for (int i = 0; i < narrays; i++) {
+	    for (int j = 0; j < size; j++) {
+		arrays[i][j] = (Proxy) proxyCons.newInstance(consArgs);
+	    }
+	}
+	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, Proxy[][] 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();
+	    }
+	}
+    }
+}
+
+