RetransformBigClassApp.java revision 8729:0242fce0f717 
1/*
2 * Copyright (c) 2011, 2013, 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
24import java.io.*;
25
26public class RetransformBigClassApp {
27    /**
28     * Memory leak is assumed, if application consumes more than specified amount of memory during its execution.
29     * The number is given in KB.
30     */
31    private static final long MEM_LEAK_THRESHOLD = 32 * 1024; // 32MB
32
33    public static void main(String[] args) throws Exception {
34        System.out.println("Creating instance of " +
35            RetransformBigClassAgent.clz);
36        RetransformBigClassAgent.clz.newInstance();
37
38        // Do a short warmup before creating the NMT baseline
39        try {
40            Thread.sleep(5 * 1000);
41        } catch (InterruptedException ie) {
42        }
43
44        NMTHelper.baseline();
45
46        int count = 0;
47        while (!RetransformBigClassAgent.doneRetransforming) {
48            System.out.println("App loop count: " + ++count);
49            try {
50                Thread.sleep(10 * 1000);
51            } catch (InterruptedException ie) {
52            }
53        }
54        System.out.println("App looped  " + count + " times.");
55
56        long committedDiff = NMTHelper.committedDiff();
57        if (committedDiff > MEM_LEAK_THRESHOLD) {
58            throw new Exception("FAIL: Committed memory usage increased by " + committedDiff + "KB " +
59                               "(greater than " + MEM_LEAK_THRESHOLD + "KB)");
60        }
61        System.err.println("PASS: Committed memory usage increased by " + committedDiff + "KB " +
62                           "(not greater than " + MEM_LEAK_THRESHOLD + "KB)");
63    }
64}
65