1 /*
2 * Copyright (c) 2012, 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
24 /*
25 * @test Test8004741.java
26 * @bug 8004741
27 * @summary Missing compiled exception handle table entry for multidimensional array allocation
28 * @run main/othervm -Xmx64m -Xbatch -XX:+IgnoreUnrecognizedVMOptions -XX:+UnlockDiagnosticVMOptions -XX:-TieredCompilation -XX:+StressCompiledExceptionHandlers -XX:+SafepointALot -XX:GuaranteedSafepointInterval=100 Test8004741
29 * @run main/othervm -Xmx64m -Xbatch -XX:+IgnoreUnrecognizedVMOptions -XX:+UnlockDiagnosticVMOptions -XX:-TieredCompilation -XX:+StressCompiledExceptionHandlers Test8004741
30 */
31
32 import java.util.*;
33
34 public class Test8004741 extends Thread {
35
36 static int passed = 0;
37
38 /**
39 * Loop forever allocating 2-d arrays.
40 * Catches and rethrows all exceptions; in the case of ThreadDeath, increments passed.
41 * Note that passed is incremented here because this is the exception handler with
42 * the smallest scope; we only want to declare success in the case where it is highly
43 * likely that the test condition
44 * (exception in 2-d array alloc interrupted by ThreadDeath)
45 * actually occurs.
46 */
47 static int[][] test(int a, int b) throws Exception {
48 int[][] ar;
49 try {
50 ar = new int[a][b];
51 } catch (ThreadDeath e) {
52 System.out.println("test got ThreadDeath");
53 passed++;
54 throw(e);
55 }
56 return ar;
57 }
58
59 /* Cookbook wait-notify to track progress of test thread. */
60 Object progressLock = new Object();
61 private static final int NOT_STARTED = 0;
62 private static final int RUNNING = 1;
63 private static final int STOPPING = 2;
64
65 int progressState = NOT_STARTED;
66
67 void toState(int state) {
68 synchronized (progressLock) {
69 progressState = state;
70 progressLock.notify();
71 }
72 }
73
74 void waitFor(int state) {
75 synchronized (progressLock) {
76 while (progressState < state) {
77 try {
78 progressLock.wait();
79 } catch (InterruptedException e) {
80 e.printStackTrace();
81 System.out.println("unexpected InterruptedException");
82 fail();
83 }
84 }
85 if (progressState > state) {
86 System.out.println("unexpected test state change, expected " +
87 state + " but saw " + progressState);
88 fail();
89 }
90 }
91 }
92
93 /**
94 * Loops running test until some sort of an exception or error,
95 * expects to see ThreadDeath.
96 */
97 public void run() {
98 try {
99 // Print before state change, so that other thread is most likely
100 // to see this thread executing calls to test() in a loop.
101 System.out.println("thread running");
102 toState(RUNNING);
103 while (true) {
104 // (2,2) (2,10) (2,100) were observed to tickle the bug;
105 test(2, 100);
106 }
107 } catch (ThreadDeath e) {
108 // nothing to say, passing was incremented by the test.
109 } catch (Throwable e) {
110 e.printStackTrace();
111 System.out.println("unexpected Throwable " + e);
112 fail();
113 }
114 toState(STOPPING);
115 }
116
117 /**
118 * Runs a single trial of the test in a thread.
119 * No single trial is definitive, since the ThreadDeath
120 * exception might not land in the tested region of code.
121 */
122 public static void threadTest() throws InterruptedException {
123 Test8004741 t = new Test8004741();
124 t.start();
125 t.waitFor(RUNNING);
126 Thread.sleep(100);
127 System.out.println("stopping thread");
128 t.stop();
129 t.waitFor(STOPPING);
130 t.join();
131 }
132
133 public static void main(String[] args) throws Exception {
134 // Warm up "test"
135 // t will never be started.
136 for (int n = 0; n < 11000; n++) {
137 test(2, 100);
138 }
139
140 // Will this sleep help ensure that the compiler is run?
141 Thread.sleep(500);
142 passed = 0;
143
144 try {
145 test(-1, 100);
146 System.out.println("Missing NegativeArraySizeException #1");
147 fail();
148 } catch ( java.lang.NegativeArraySizeException e ) {
149 System.out.println("Saw expected NegativeArraySizeException #1");
150 }
151
152 try {
153 test(100, -1);
154 fail();
155 System.out.println("Missing NegativeArraySizeException #2");
156 fail();
157 } catch ( java.lang.NegativeArraySizeException e ) {
158 System.out.println("Saw expected NegativeArraySizeException #2");
159 }
160
161 /* Test repetitions. If the test succeeds-mostly, it succeeds,
162 * as long as it does not crash (the outcome if the exception range
163 * table entry for the array allocation is missing).
164 */
165 int N = 12;
166 for (int n = 0; n < N; n++) {
167 threadTest();
168 }
169
170 if (passed > N/2) {
171 System.out.println("Saw " + passed + " out of " + N + " possible ThreadDeath hits");
172 System.out.println("PASSED");
173 } else {
174 System.out.println("Too few ThreadDeath hits; expected at least " + N/2 +
175 " but saw only " + passed);
176 fail();
177 }
178 }
179
180 static void fail() {
181 System.out.println("FAILED");
182 System.exit(97);
183 }
184 };