util/concurrent/RejectedExecutionHandler.java

/*
 * Written by Doug Lea with assistance from members of JCP JSR-166
 * Expert Group and released to the public domain, as explained at
 * http://creativecommons.org/publicdomain/zero/1.0/
 */

package java.util.concurrent;

/**
 * A handler for tasks that cannot be executed by a {@link ThreadPoolExecutor}.
 *
 * @since 1.5
 * @author Doug Lea
 */
public interface RejectedExecutionHandler {

    /**
     * Method that may be invoked by a {@link ThreadPoolExecutor} when
     * {@link ThreadPoolExecutor#execute execute} cannot accept a
     * task.  This may occur when no more threads or queue slots are
     * available because their bounds would be exceeded, or upon
     * shutdown of the Executor.
     *
     * <p>In the absence of other alternatives, the method may throw
     * an unchecked {@link RejectedExecutionException}, which will be
     * propagated to the caller of {@code execute}.
     *
     * @param r the runnable task requested to be executed
     * @param executor the executor attempting to execute this task
     * @throws RejectedExecutionException if there is no remedy
     */
    void rejectedExecution(Runnable r, ThreadPoolExecutor executor);
}
Revision:	1.8
Committed:	Tue Mar 15 19:47:03 2011 UTC (13 years, 2 months ago) by jsr166
Branch:	MAIN
CVS Tags:	release-1_7_0, HEAD
Changes since 1.7:	+1 -1 lines
Log Message:	Update Creative Commons license URL in legal notices
#	User	Rev	Content
1	dl	1.1	/*
2			* Written by Doug Lea with assistance from members of JCP JSR-166
3	dl	1.5	* Expert Group and released to the public domain, as explained at
4	jsr166	1.8	* http://creativecommons.org/publicdomain/zero/1.0/
5	dl	1.1	*/
6
7			package java.util.concurrent;
8
9			/**
10	jsr166	1.7	* A handler for tasks that cannot be executed by a {@link ThreadPoolExecutor}.
11	dl	1.1	*
12			* @since 1.5
13	dl	1.2	* @author Doug Lea
14	dl	1.1	*/
15			public interface RejectedExecutionHandler {
16	tim	1.3
17	dl	1.1	/**
18	dl	1.4	* Method that may be invoked by a {@link ThreadPoolExecutor} when
19	jsr166	1.7	* {@link ThreadPoolExecutor#execute execute} cannot accept a
20			* task. This may occur when no more threads or queue slots are
21			* available because their bounds would be exceeded, or upon
22			* shutdown of the Executor.
23	dl	1.1	*
24	jsr166	1.7	* <p>In the absence of other alternatives, the method may throw
25			* an unchecked {@link RejectedExecutionException}, which will be
26			* propagated to the caller of {@code execute}.
27	dl	1.1	*
28			* @param r the runnable task requested to be executed
29			* @param executor the executor attempting to execute this task
30			* @throws RejectedExecutionException if there is no remedy
31			*/
32			void rejectedExecution(Runnable r, ThreadPoolExecutor executor);
33			}