| J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 3 | * |
| 4 | * This code is free software; you can redistribute it and/or modify it |
| 5 | * under the terms of the GNU General Public License version 2 only, as |
| 6 | * published by the Free Software Foundation. Sun designates this |
| 7 | * particular file as subject to the "Classpath" exception as provided |
| 8 | * by Sun in the LICENSE file that accompanied this code. |
| 9 | * |
| 10 | * This code is distributed in the hope that it will be useful, but WITHOUT |
| 11 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| 12 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| 13 | * version 2 for more details (a copy is included in the LICENSE file that |
| 14 | * accompanied this code). |
| 15 | * |
| 16 | * You should have received a copy of the GNU General Public License version |
| 17 | * 2 along with this work; if not, write to the Free Software Foundation, |
| 18 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| 19 | * |
| 20 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| 21 | * CA 95054 USA or visit www.sun.com if you need additional information or |
| 22 | * have any questions. |
| 23 | */ |
| 24 | |
| 25 | /* |
| 26 | * This file is available under and governed by the GNU General Public |
| 27 | * License version 2 only, as published by the Free Software Foundation. |
| 28 | * However, the following notice accompanied the original version of this |
| 29 | * file: |
| 30 | * |
| 31 | * Written by Doug Lea with assistance from members of JCP JSR-166 |
| 32 | * Expert Group and released to the public domain, as explained at |
| 33 | * http://creativecommons.org/licenses/publicdomain |
| 34 | */ |
| 35 | |
| 36 | package java.util.concurrent; |
| 37 | |
| 38 | /** |
| 39 | * An object that creates new threads on demand. Using thread factories |
| 40 | * removes hardwiring of calls to {@link Thread#Thread(Runnable) new Thread}, |
| 41 | * enabling applications to use special thread subclasses, priorities, etc. |
| 42 | * |
| 43 | * <p> |
| 44 | * The simplest implementation of this interface is just: |
| 45 | * <pre> |
| 46 | * class SimpleThreadFactory implements ThreadFactory { |
| 47 | * public Thread newThread(Runnable r) { |
| 48 | * return new Thread(r); |
| 49 | * } |
| 50 | * } |
| 51 | * </pre> |
| 52 | * |
| 53 | * The {@link Executors#defaultThreadFactory} method provides a more |
| 54 | * useful simple implementation, that sets the created thread context |
| 55 | * to known values before returning it. |
| 56 | * @since 1.5 |
| 57 | * @author Doug Lea |
| 58 | */ |
| 59 | public interface ThreadFactory { |
| 60 | |
| 61 | /** |
| 62 | * Constructs a new {@code Thread}. Implementations may also initialize |
| 63 | * priority, name, daemon status, {@code ThreadGroup}, etc. |
| 64 | * |
| 65 | * @param r a runnable to be executed by new thread instance |
| 66 | * @return constructed thread, or {@code null} if the request to |
| 67 | * create a thread is rejected |
| 68 | */ |
| 69 | Thread newThread(Runnable r); |
| 70 | } |