J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 2001-2003 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| 20 | * CA 95054 USA or visit www.sun.com if you need additional information or |
| 21 | * have any questions. |
| 22 | */ |
| 23 | |
| 24 | /* @test |
| 25 | * @bug 4940372 |
| 26 | * @summary Ensure that the wakeup state is cleared by selectNow() |
| 27 | */ |
| 28 | |
| 29 | import java.nio.channels.*; |
| 30 | |
| 31 | public class WakeupNow { |
| 32 | |
| 33 | public static void main(String[] args) throws Exception { |
| 34 | test1(); |
| 35 | test2(); |
| 36 | } |
| 37 | |
| 38 | // Test if selectNow clears wakeup with the wakeup fd and |
| 39 | // another fd in the selector. |
| 40 | // This fails before the fix on Linux |
| 41 | private static void test1() throws Exception { |
| 42 | Selector sel = Selector.open(); |
| 43 | Pipe p = Pipe.open(); |
| 44 | p.source().configureBlocking(false); |
| 45 | p.source().register(sel, SelectionKey.OP_READ); |
| 46 | sel.wakeup(); |
| 47 | sel.selectNow(); |
| 48 | long startTime = System.currentTimeMillis(); |
| 49 | int n = sel.select(2000); |
| 50 | long endTime = System.currentTimeMillis(); |
| 51 | if (endTime - startTime < 1000) |
| 52 | throw new RuntimeException("test failed"); |
| 53 | } |
| 54 | |
| 55 | // Test if selectNow clears wakeup with only the wakeup fd |
| 56 | // in the selector. |
| 57 | // This fails before the fix on Solaris |
| 58 | private static void test2() throws Exception { |
| 59 | Selector sel = Selector.open(); |
| 60 | Pipe p = Pipe.open(); |
| 61 | p.source().configureBlocking(false); |
| 62 | sel.wakeup(); |
| 63 | sel.selectNow(); |
| 64 | long startTime = System.currentTimeMillis(); |
| 65 | int n = sel.select(2000); |
| 66 | long endTime = System.currentTimeMillis(); |
| 67 | if (endTime - startTime < 1000) |
| 68 | throw new RuntimeException("test failed"); |
| 69 | } |
| 70 | |
| 71 | } |