1 /*
2 * Copyright (c) 1998, 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
26 * @bug 4023283
27 * @key headful
28 * @summary Checks that an Error which propogates up to the EventDispatch
29 * loop does not crash AWT.
30 * @author Andrei Dmitriev: area=awt.event
31 * @library ../../regtesthelpers
32 * @modules java.desktop/sun.awt
33 * @build Util
34 * @run main LoopRobustness
35 */
36
37 import java.awt.*;
38 import java.awt.event.*;
39
40 import sun.awt.SunToolkit;
41
42 import test.java.awt.regtesthelpers.Util;
43
44 public class LoopRobustness {
45
46 final static long TIMEOUT = 5000;
47 final static Object LOCK = new Object();
48
49 public static int clicks = 0;
50 public static volatile boolean notifyOccured = false;
51 public static volatile boolean otherExceptionsCaught = false;
52
53 public static void main(String [] args) throws Exception {
54 SunToolkit.createNewAppContext();
55
56 ThreadGroup mainThreadGroup = Thread.currentThread().getThreadGroup();
57
58 long at;
59 //wait for a TIMEOUT giving a chance to a new Thread above to accomplish its stuff.
60 synchronized (LoopRobustness.LOCK) {
61 new Thread(new TestThreadGroup(mainThreadGroup, "TestGroup"), new Impl()).start();
62 at = System.currentTimeMillis();
63 try {
64 while (!notifyOccured && (System.currentTimeMillis() - at < TIMEOUT)) {
65 LoopRobustness.LOCK.wait(1000);
66 }
67 } catch (InterruptedException e) {
68 throw new RuntimeException("Test interrupted.", e);
69 }
70 }
71
72 if (!notifyOccured) {
73 //notify doesn't occur after a reasonable time.
74 throw new RuntimeException("Test FAILED: second thread hasn't notified MainThread");
75 }
76
77 //now wait for two clicks
78 at = System.currentTimeMillis();
79 while(System.currentTimeMillis() - at < TIMEOUT && clicks < 2) {
80 try {
81 Thread.sleep(100);
82 } catch(InterruptedException e) {
83 throw new RuntimeException("Test interrupted.", e);
84 }
85 }
86 if (clicks != 2) {
87 throw new RuntimeException("Test FAILED: robot should press button twice");
88 }
89 if (otherExceptionsCaught) {
90 throw new RuntimeException("Test FAILED: unexpected exceptions caught");
91 }
92 }
93 }
94
95 class Impl implements Runnable{
96 static Robot robot;
97 public void run() {
98 SunToolkit.createNewAppContext();
99
100 Button b = new Button("Press me to test the AWT-Event Queue thread");
101 Frame lr = new Frame("ROBUST FRAME");
102 lr.setBounds(100, 100, 300, 100);
103 b.addActionListener(new ActionListener() {
104 public void actionPerformed(ActionEvent e) {
105 LoopRobustness.clicks++;
106 //throwing an exception in Static Initializer
107 System.out.println(HostileCrasher.aStaticMethod());
108 }
109 });
110 lr.add(b);
111 lr.setVisible(true);
112
113 try {
114 robot = new Robot();
115 } catch (AWTException e) {
116 throw new RuntimeException("Test interrupted.", e);
117 }
118 Util.waitForIdle(robot);
119
120 synchronized (LoopRobustness.LOCK){
121 LoopRobustness.LOCK.notify();
122 LoopRobustness.notifyOccured = true;
123 }
124
125 int i = 0;
126 while (i < 2) {
127 robot.mouseMove(b.getLocationOnScreen().x + b.getWidth()/2,
128 b.getLocationOnScreen().y + b.getHeight()/2);
129 Util.waitForIdle(robot);
130 robot.mousePress(InputEvent.BUTTON1_MASK);
131 Util.waitForIdle(robot);
132 robot.mouseRelease(InputEvent.BUTTON1_MASK);
133 Util.waitForIdle(robot);
134 i++;
135 }
136 }
137 }
138
139 class TestThreadGroup extends ThreadGroup {
140 TestThreadGroup(ThreadGroup threadGroup, String name) {
141 super(threadGroup, name);
142 }
143
144 public void uncaughtException(Thread thread, Throwable e) {
145 System.out.println("Exception caught: " + e);
146 e.printStackTrace(System.out);
147 System.out.flush();
148 if ((e instanceof ExceptionInInitializerError) ||
149 (e instanceof NoClassDefFoundError))
150 {
151 // These two are expected
152 return;
153 }
154 LoopRobustness.otherExceptionsCaught = true;
155 }
156 }
157
158 class HostileCrasher {
159 static {
160 if (Math.random() >= 0.0) {
161 throw new RuntimeException("Die, AWT-Event Queue thread!");
162 }
163 }
164 public static String aStaticMethod() {
165 return "hello, world";
166 }
167 }