1/*
2 * Copyright (c) 2000, 2008, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23
24/*
25 *
26 */
27
28package bench.rmi;
29
30import bench.Benchmark;
31import java.io.Serializable;
32import java.rmi.Remote;
33import java.rmi.RemoteException;
34import java.rmi.server.UnicastRemoteObject;
35
36/**
37 * Benchmark for testing speed of calls with small object tree parameters and
38 * return values.
39 */
40public class SmallObjTreeCalls implements Benchmark {
41
42    static class Node implements Serializable {
43        Object parent, left, right;
44
45        Node(Object parent, int depth) {
46            this.parent = parent;
47            if (depth > 0) {
48                left = new Node(this, depth - 1);
49                right = new Node(this, depth - 1);
50            }
51        }
52    }
53
54    interface Server extends Remote {
55        public Node call(Node val) throws RemoteException;
56    }
57
58    static class ServerImpl extends UnicastRemoteObject implements Server {
59        public ServerImpl() throws RemoteException {
60        }
61
62        public Node call(Node val) throws RemoteException {
63            return val;
64        }
65    }
66
67    static class ServerFactory implements BenchServer.RemoteObjectFactory {
68        public Remote create() throws RemoteException {
69            return new ServerImpl();
70        }
71    }
72
73    /**
74     * Issue calls using trees of small objects as parameters/return values.
75     * Arguments: <tree depth> <# calls>
76     */
77    public long run(String[] args) throws Exception {
78        int depth = Integer.parseInt(args[0]);
79        int reps = Integer.parseInt(args[1]);
80        BenchServer bsrv = Main.getBenchServer();
81        Server stub = (Server) bsrv.create(new ServerFactory());
82        Node node = new Node(null, depth);
83
84        long start = System.currentTimeMillis();
85        for (int i = 0; i < reps; i++)
86            stub.call(node);
87        long time = System.currentTimeMillis() - start;
88
89        bsrv.unexport(stub, true);
90        return time;
91    }
92}
93