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jsr166 |
1.1 |
/* |
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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/publicdomain/zero/1.0/ |
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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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} |