1 /*
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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
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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
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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
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22  */
23 
24 /*
25   @test
26   @bug 6949936
27   @author Artem Ananiev: area=eventqueue
28   @run main/timeout=30 SecondaryLoopTest
29 */
30 
31 import java.awt.*;
32 
33 /**
34  * Unit test for java.awt.SecondaryLoop implementation
35  */
36 public class SecondaryLoopTest {
37 
38     private static volatile boolean loopStarted;
39     private static volatile boolean doubleEntered;
40     private static volatile boolean loopActive;
41     private static volatile boolean eventDispatched;
42 
main(String[] args)43     public static void main(String[] args) throws Exception {
44         test(true, true);
45         test(true, false);
46         test(false, true);
47         test(false, false);
48     }
49 
test(final boolean enterEDT, final boolean exitEDT)50     private static void test(final boolean enterEDT, final boolean exitEDT) throws Exception {
51         System.out.println("Running test(" + enterEDT + ", " + exitEDT + ")");
52         System.err.flush();
53         loopStarted = true;
54         Runnable enterRun = new Runnable() {
55             @Override
56             public void run() {
57                 Toolkit tk = Toolkit.getDefaultToolkit();
58                 EventQueue eq = tk.getSystemEventQueue();
59                 final SecondaryLoop loop = eq.createSecondaryLoop();
60                 doubleEntered = false;
61                 eventDispatched = false;
62                 Runnable eventRun = new Runnable() {
63                     @Override
64                     public void run() {
65                         // Let the loop enter
66                         sleep(1000);
67                         if (loop.enter()) {
68                             doubleEntered = true;
69                         }
70                         eventDispatched = true;
71                     }
72                 };
73                 EventQueue.invokeLater(eventRun);
74                 Runnable exitRun = new Runnable() {
75                     @Override
76                     public void run() {
77                         // Let the loop enter and eventRun finish
78                         sleep(2000);
79                         if (doubleEntered) {
80                             // Hopefully, we get here if the loop is entered twice
81                             loop.exit();
82                         }
83                         loop.exit();
84                     }
85                 };
86                 if (exitEDT) {
87                     EventQueue.invokeLater(exitRun);
88                 } else {
89                     new Thread(exitRun).start();
90                 }
91                 if (!loop.enter()) {
92                     loopStarted = false;
93                 }
94                 loopActive = eventDispatched;
95             }
96         };
97         if (enterEDT) {
98             EventQueue.invokeAndWait(enterRun);
99         } else {
100             enterRun.run();
101         }
102         // Print all the flags before we fail with exception
103         System.out.println("    loopStarted = " + loopStarted);
104         System.out.println("    doubleEntered = " + doubleEntered);
105         System.out.println("    loopActive = " + loopActive);
106         System.out.flush();
107         if (!loopStarted) {
108             throw new RuntimeException("Test FAILED: the secondary loop is not started");
109         }
110         if (doubleEntered) {
111             throw new RuntimeException("Test FAILED: the secondary loop is started twice");
112         }
113         if (!loopActive) {
114             throw new RuntimeException("Test FAILED: the secondary loop exited immediately");
115         }
116     }
117 
sleep(long t)118     private static void sleep(long t) {
119         try {
120             Thread.sleep(t);
121         } catch (InterruptedException e) {
122             e.printStackTrace(System.err);
123         }
124     }
125 
126 }
127