1 /* 2 * Copyright (c) 2000, 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 24 /* 25 * @test 26 * @key stress 27 * 28 * @summary converted from VM testbase nsk/stress/stack/stack013. 29 * VM testbase keywords: [stress, stack, nonconcurrent] 30 * VM testbase readme: 31 * DESCRIPTION 32 * This test provokes multiple stack overflows in the multiple 33 * threads -- by invoking virtual recursive method for the given 34 * fixed depth of recursion (though, for a large depth). 35 * This test measures a number of recursive invocations until 36 * stack overflow, and then tries to provoke similar stack overflows 37 * 10 times in each of 10 threads. Each provocation consists of 38 * invoking that recursive method for the given fixed depth 39 * of invocations which is 10 times that depth measured before. 40 * The test is deemed passed, if VM have not crashed, and 41 * if exception other than due to stack overflow was not 42 * thrown. 43 * COMMENTS 44 * This test crashes HS versions 2.0, 1.3, and 1.4 on both Win32 45 * and Solaris platforms. 46 * See the bug: 47 * 4366625 (P4/S4) multiple stack overflow causes HS crash 48 * 49 * @requires vm.opt.DeoptimizeALot == null | vm.opt.DeoptimizeALot == false 50 * @run main/othervm nsk.stress.stack.stack013 51 */ 52 53 package nsk.stress.stack; 54 55 56 import java.io.PrintStream; 57 58 public class stack013 extends stack013i { 59 final static int THREADS = 10; 60 final static int CYCLES = 10; 61 62 public static void main(String[] args) { 63 int exitCode = run(args, System.out); 64 System.exit(exitCode + 95); 65 } 66 67 public static int run(String args[], PrintStream out) { 68 stack013i test = new stack013(); 69 // 70 // Measure maximal recursion depth until stack overflow: 71 // 72 int maxDepth = 0; 73 for (int depth = 10; ; depth += 10) 74 try { 75 test.recurse(depth); 76 maxDepth = depth; 77 } catch (StackOverflowError soe) { 78 break; 79 } catch (OutOfMemoryError oome) { 80 break; 81 } 82 out.println("Max. depth: " + maxDepth); 83 84 // 85 // Execute multiple threads repeatedly provoking stack overflows: 86 // 87 stack013i threads[] = new stack013i[THREADS]; 88 for (int i = 0; i < threads.length; i++) { 89 threads[i] = new stack013(); 90 threads[i].depthToTry = 10 * maxDepth; 91 threads[i].cycles = CYCLES; 92 threads[i].start(); 93 } 94 for (int i = 0; i < threads.length; i++) 95 if (threads[i].isAlive()) 96 try { 97 threads[i].join(); 98 } catch (InterruptedException exception) { 99 exception.printStackTrace(out); 100 return 2; 101 } 102 103 // 104 // Check if unexpected exceptions were thrown: 105 // 106 int exitCode = 0; 107 for (int i = 0; i < threads.length; i++) 108 if (threads[i].thrown != null) { 109 threads[i].thrown.printStackTrace(out); 110 exitCode = 2; 111 } 112 113 if (exitCode != 0) 114 out.println("# TEST FAILED"); 115 return exitCode; 116 } 117 118 void recurse(int depth) { 119 if (depth > 0) 120 recurse(depth - 1); 121 } 122 } 123 124 abstract class stack013i extends Thread { 125 // 126 // Pure virtual method: 127 // 128 abstract void recurse(int depth); 129 130 Throwable thrown = null; 131 int depthToTry; 132 int cycles; 133 134 public void run() { 135 // 136 // Provoke multiple stack overflows: 137 // 138 for (int i = 0; i < cycles; i++) 139 try { 140 recurse(depthToTry); 141 throw new Exception( 142 "TEST_RFE: no stack overflow thrown" + 143 ", need to try deeper recursion?"); 144 145 } catch (StackOverflowError error) { 146 // It's OK: stack overflow was expected. 147 } catch (OutOfMemoryError oome) { 148 // Also OK: out of memory is eligible here. 149 150 } catch (Throwable throwable) { 151 if (throwable instanceof ThreadDeath) 152 throw (ThreadDeath) throwable; 153 // It isn't OK! 154 thrown = throwable; 155 break; 156 } 157 } 158 }