edu.emory.mathcs.backport.java.util.concurrent
Interface RejectedExecutionHandler
- All Known Implementing Classes:
- ThreadPoolExecutor.AbortPolicy, ThreadPoolExecutor.CallerRunsPolicy, ThreadPoolExecutor.DiscardOldestPolicy, ThreadPoolExecutor.DiscardPolicy
public interface RejectedExecutionHandler
A handler for tasks that cannot be executed by a ThreadPoolExecutor
.
- Since:
- 1.5
- Author:
- Doug Lea
rejectedExecution
void rejectedExecution(java.lang.Runnable r,
ThreadPoolExecutor executor)
- Method that may be invoked by a
ThreadPoolExecutor
when
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 other alternatives, the method may throw an
unchecked RejectedExecutionException
, which will be
propagated to the caller of execute.
- Parameters:
r
- the runnable task requested to be executedexecutor
- the executor attempting to execute this task
- Throws:
RejectedExecutionException
- if there is no remedy