1 /* 2 * Copyright (c) 2002-2013, Oracle and/or its affiliates. All rights reserved. 3 * Copyright (c) 2011 SAP AG. All Rights Reserved. 4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 5 * 6 * This code is free software; you can redistribute it and/or modify it 7 * under the terms of the GNU General Public License version 2 only, as 8 * published by the Free Software Foundation. 9 * 10 * This code is distributed in the hope that it will be useful, but WITHOUT 11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 13 * version 2 for more details (a copy is included in the LICENSE file that 14 * accompanied this code). 15 * 16 * You should have received a copy of the GNU General Public License version 17 * 2 along with this work; if not, write to the Free Software Foundation, 18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 19 * 20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 21 * or visit www.oracle.com if you need additional information or have any 22 * questions. 23 */ 24 25 class TestMT { 26 27 static boolean loadLib(String libName) { 28 try { 29 System.loadLibrary(libName); 30 System.out.println("Loaded library "+ libName + "."); 31 return true; 32 } catch (SecurityException e) { 33 System.out.println("loadLibrary(\"" + libName + "\") throws: " + e + "\n"); 34 } catch (UnsatisfiedLinkError e) { 35 System.out.println("loadLibrary(\"" + libName + "\") throws: " + e + "\n"); 36 } 37 return false; 38 } 39 40 public static int counter = 1; 41 static int Runner() { 42 counter = counter * -1; 43 int i = counter; 44 if (counter < 2) counter += Runner(); 45 return i; 46 } 47 48 public static int run(String msg) { 49 try { 50 Runner(); 51 } catch (StackOverflowError e) { 52 System.out.println(msg + " caught stack overflow error."); 53 return 0; 54 } catch (OutOfMemoryError e) { 55 return 0; 56 } 57 return 2; 58 } 59 60 public static void main(String argv[]) { 61 try { 62 for (int i = 0; i < 20; i++) { 63 Thread t = new DoStackOverflow("SpawnedThread " + i); 64 t.start(); 65 } 66 run("Main thread"); 67 loadLib("test-rwx"); 68 run("Main thread"); 69 } catch (Exception e) { 70 System.out.println(e); 71 } 72 } 73 74 static class DoStackOverflow extends Thread { 75 public DoStackOverflow(String name) { 76 super(name); 77 } 78 public void run() { 79 for (int i = 0; i < 10; ++i) { 80 TestMT.run(getName()); 81 yield(); 82 } 83 } 84 } 85 }