程序包 java.util.concurrent

接口 RejectedExecutionHandler

所有已知实现类:

ThreadPoolExecutor.AbortPolicy, ThreadPoolExecutor.CallerRunsPolicy, ThreadPoolExecutor.DiscardOldestPolicy, ThreadPoolExecutor.DiscardPolicy

public interface RejectedExecutionHandler

A handler for tasks that cannot be executed by a ThreadPoolExecutor.

从以下版本开始:

1.5

方法概要

限定符和类型	方法	说明
void	rejectedExecution(Runnable r, ThreadPoolExecutor executor)	Method that may be invoked by a ThreadPoolExecutor when ThreadPoolExecutor#execute cannot accept a task.

方法详细资料

rejectedExecution

void rejectedExecution(Runnable r,
                       ThreadPoolExecutor executor)

Method that may be invoked by a ThreadPoolExecutor when ThreadPoolExecutor#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.

In the absence of other alternatives, the method may throw an unchecked RejectedExecutionException, which will be propagated to the caller of execute.

参数:

r - the runnable task requested to be executed

executor - the executor attempting to execute this task

抛出:

RejectedExecutionException - if there is no remedy