1 /*
2  * Copyright (c) 2003, 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.
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22  */
23 
24 package nsk.jvmti.ThreadStart;
25 
26 import java.io.PrintStream;
27 
28 public class threadstart001 {
29 
30     final static int JCK_STATUS_BASE = 95;
31     final static int THREADS_LIMIT = 100;
32     final static String NAME_PREFIX = "threadstart001-";
33 
34     static {
35         try {
36             System.loadLibrary("threadstart001");
37         } catch (UnsatisfiedLinkError ule) {
38             System.err.println("Could not load threadstart001 library");
39             System.err.println("java.library.path:"
40                 + System.getProperty("java.library.path"));
41             throw ule;
42         }
43     }
44 
getReady(int i, String name)45     native static void getReady(int i, String name);
check()46     native static int check();
47 
48     static volatile int thrCount = 0;
49 
main(String args[])50     public static void main(String args[]) {
51         args = nsk.share.jvmti.JVMTITest.commonInit(args);
52 
53         // produce JCK-like exit status.
54         System.exit(run(args, System.out) + JCK_STATUS_BASE);
55     }
56 
run(String args[], PrintStream out)57     public static int run(String args[], PrintStream out) {
58         TestThread t = new TestThread(NAME_PREFIX + thrCount);
59         getReady(THREADS_LIMIT, NAME_PREFIX);
60         t.start();
61         try {
62             t.join();
63         } catch (InterruptedException e) {
64             throw new Error("Unexpected: " + e);
65         }
66         return check();
67     }
68 
69     static class TestThread extends Thread {
TestThread(String name)70         public TestThread(String name) {
71             super(name);
72         }
run()73         public void run() {
74             thrCount++;
75             if (thrCount < THREADS_LIMIT) {
76                 TestThread t = new TestThread(NAME_PREFIX + thrCount);
77                 t.start();
78                 try {
79                     t.join();
80                 } catch (InterruptedException e) {
81                     throw new Error("Unexpected: " + e);
82                 }
83             }
84         }
85     }
86 }
87