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/*
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation. Oracle designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Oracle in the LICENSE file that accompanied this code.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/*
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* This file is available under and governed by the GNU General Public
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* License version 2 only, as published by the Free Software Foundation.
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* However, the following notice accompanied the original version of this
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* file:
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*
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* Written by Doug Lea with assistance from members of JCP JSR-166
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* Expert Group and released to the public domain, as explained at
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* http://creativecommons.org/licenses/publicdomain
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*/
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package java.util.concurrent;
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/**
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* A handler for tasks that cannot be executed by a {@link ThreadPoolExecutor}.
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*
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* @since 1.5
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* @author Doug Lea
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*/
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public interface RejectedExecutionHandler {
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/**
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* Method that may be invoked by a {@link ThreadPoolExecutor} when
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* {@link ThreadPoolExecutor#execute execute} cannot accept a
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* task. This may occur when no more threads or queue slots are
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* available because their bounds would be exceeded, or upon
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* shutdown of the Executor.
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*
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* <p>In the absence of other alternatives, the method may throw
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* an unchecked {@link RejectedExecutionException}, which will be
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* propagated to the caller of {@code execute}.
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*
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* @param r the runnable task requested to be executed
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* @param executor the executor attempting to execute this task
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* @throws RejectedExecutionException if there is no remedy
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*/
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void rejectedExecution(Runnable r, ThreadPoolExecutor executor);
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}
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