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.
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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
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22 */
23
24 /**
25 *
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 * @build Util
33 * @run main LoopRobustness
34 */
35
36 import java.awt.*;
37 import java.awt.event.*;
38
39 import sun.awt.SunToolkit;
40
41 import test.java.awt.regtesthelpers.Util;
42
43 public class LoopRobustness {
44
45 final static long TIMEOUT = 5000;
46 final static Object LOCK = new Object();
47
48 public static int clicks = 0;
49 public static volatile boolean notifyOccured = false;
50 public static volatile boolean otherExceptionsCaught = false;
51
52 public static void main(String [] args) throws Exception {
53 SunToolkit.createNewAppContext();
54
55 ThreadGroup mainThreadGroup = Thread.currentThread().getThreadGroup();
56
57 long at;
58 //wait for a TIMEOUT giving a chance to a new Thread above to accomplish its stuff.
59 synchronized (LoopRobustness.LOCK) {
60 new Thread(new TestThreadGroup(mainThreadGroup, "TestGroup"), new Impl()).start();
61 at = System.currentTimeMillis();
62 try {
63 while (!notifyOccured && (System.currentTimeMillis() - at < TIMEOUT)) {
64 LoopRobustness.LOCK.wait(1000);
65 }
66 } catch (InterruptedException e) {
67 throw new RuntimeException("Test interrupted.", e);
68 }
69 }
70
71 if (!notifyOccured) {
72 //notify doesn't occur after a reasonable time.
73 throw new RuntimeException("Test FAILED: second thread hasn't notified MainThread");
74 }
75
76 //now wait for two clicks
77 at = System.currentTimeMillis();
78 while(System.currentTimeMillis() - at < TIMEOUT && clicks < 2) {
79 try {
80 Thread.sleep(100);
81 } catch(InterruptedException e) {
82 throw new RuntimeException("Test interrupted.", e);
83 }
84 }
85 if (clicks != 2) {
86 throw new RuntimeException("Test FAILED: robot should press button twice");
87 }
88 if (otherExceptionsCaught) {
89 throw new RuntimeException("Test FAILED: unexpected exceptions caught");
90 }
91 }
92 }
93
94 class Impl implements Runnable{
95 static Robot robot;
96 public void run() {
97 SunToolkit.createNewAppContext();
98
99 Button b = new Button("Press me to test the AWT-Event Queue thread");
100 Frame lr = new Frame("ROBUST FRAME");
101 lr.setBounds(100, 100, 300, 100);
102 b.addActionListener(new ActionListener() {
103 public void actionPerformed(ActionEvent e) {
104 LoopRobustness.clicks++;
105 //throwing an exception in Static Initializer
106 System.out.println(HostileCrasher.aStaticMethod());
107 }
108 });
109 lr.add(b);
110 lr.setVisible(true);
111
112 try {
113 robot = new Robot();
114 } catch (AWTException e) {
115 throw new RuntimeException("Test interrupted.", e);
116 }
117 Util.waitForIdle(robot);
118
119 synchronized (LoopRobustness.LOCK){
120 LoopRobustness.LOCK.notify();
121 LoopRobustness.notifyOccured = true;
122 }
123
124 int i = 0;
125 while (i < 2) {
126 robot.mouseMove(b.getLocationOnScreen().x + b.getWidth()/2,
127 b.getLocationOnScreen().y + b.getHeight()/2);
128 Util.waitForIdle(robot);
129 robot.mousePress(InputEvent.BUTTON1_MASK);
130 Util.waitForIdle(robot);
131 robot.mouseRelease(InputEvent.BUTTON1_MASK);
132 Util.waitForIdle(robot);
133 i++;
134 }
135 }
136 }
137
138 class TestThreadGroup extends ThreadGroup {
139 TestThreadGroup(ThreadGroup threadGroup, String name) {
140 super(threadGroup, name);
141 }
142
143 public void uncaughtException(Thread thread, Throwable e) {
144 System.out.println("Exception caught: " + e);
145 e.printStackTrace(System.out);
146 System.out.flush();
147 if ((e instanceof ExceptionInInitializerError) ||
148 (e instanceof NoClassDefFoundError))
149 {
150 // These two are expected
151 return;
152 }
153 LoopRobustness.otherExceptionsCaught = true;
154 }
155 }
156
157 class HostileCrasher {
158 static {
159 if (Math.random() >= 0.0) {
160 throw new RuntimeException("Die, AWT-Event Queue thread!");
161 }
162 }
163 public static String aStaticMethod() {
164 return "hello, world";
165 }
166 }