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| 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. Oracle designates this | ||
| 7 | * particular file as subject to the "Classpath" exception as provided | ||
| 8 | * by Oracle 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | ||
| 21 | * or visit www.oracle.com if you need additional information or have any | ||
| 22 | * 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/publicdomain/zero/1.0/ | ||
| 34 | */ | ||
| 35 | |||
| 36 | package java.util.concurrent; | ||
| 37 | |||
| 38 | /** | ||
| 39 | * A handler for tasks that cannot be executed by a {@link ThreadPoolExecutor}. | ||
| 40 | * | ||
| 41 | * @since 1.5 | ||
| 42 | * @author Doug Lea | ||
| 43 | */ | ||
| 44 | public interface RejectedExecutionHandler { | ||
| 45 | |||
| 46 | /** | ||
| 47 | * Method that may be invoked by a {@link ThreadPoolExecutor} when | ||
| 48 | * {@link ThreadPoolExecutor#execute execute} cannot accept a | ||
| 49 | * task. This may occur when no more threads or queue slots are | ||
| 50 | * available because their bounds would be exceeded, or upon | ||
| 51 | * shutdown of the Executor. | ||
| 52 | * | ||
| 53 | * <p>In the absence of other alternatives, the method may throw | ||
| 54 | * an unchecked {@link RejectedExecutionException}, which will be | ||
| 55 | * propagated to the caller of {@code execute}. | ||
| 56 | * | ||
| 57 | * @param r the runnable task requested to be executed | ||
| 58 | * @param executor the executor attempting to execute this task | ||
| 59 | * @throws RejectedExecutionException if there is no remedy | ||
| 60 | */ | ||
| 61 | void rejectedExecution(Runnable r, ThreadPoolExecutor executor); | ||
| 62 | } | ||