1 /*
2  * Copyright (c) 2007, 2018, 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 package nsk.jvmti.scenarios.hotswap.HS203.hs203t004;
24 
25 public class MyThread extends Thread {
26 
27     public static volatile boolean stop = true;
28 
29     public int threadState = 100;
30 
31     public final static int run_for = 1000;
32 
MyThread()33     public MyThread() {
34         System.out.println(" MyThread :: MyThread().");
35     }
36 
run()37     public void run() {
38         doThisFunction();
39         doTask3();
40     }
41 
doThisFunction()42     public void doThisFunction() {
43         System.out.println(" MyThread.doThisFunction().");
44 
45         for (int i = 0; i < run_for; i++) {
46             doTask2();
47         }
48 
49         // it would wait for some time.
50         while (stop);
51 
52         System.out.println(" End of doThisFunction.");
53     }
54 
55     /**
56      * some method would be compiled / inlined.
57      */
doTask2()58     public void doTask2() {
59         int p = 0;
60         for (int i = 0; i < 1; i++) {
61             threadState++;
62             p++;
63         }
64     }
65 
doTask3()66     public void doTask3() {
67         // take some time
68         for (int i = 0; i < run_for; i++) {
69             doTask2();
70         }
71     }
72 
73 }
74