public class RejectableThreadPoolExecutor extends ThreadPoolExecutor
RejectableFutureTask
instead of
FutureTask
when registering new tasks for execution.
Instances of RejectableFutureTask
are required to handle ThreadPoolRejectedPolicy.Discard
and ThreadPoolRejectedPolicy.DiscardOldest
policies correctly, e.g. notify
Callable
and Runnable
tasks when they are rejected.
To be notified of rejection tasks have to implement Rejectable
interface:
public class RejectableTask implements Runnable, Rejectable {
@Override
public void run() {
// execute task
}
@Override
public void reject() {
// do something useful on rejection
}
}
If the task does not implement Rejectable
interface the behavior is exactly the same as with
ordinary ThreadPoolExecutor
.ThreadPoolExecutor.AbortPolicy, ThreadPoolExecutor.CallerRunsPolicy, ThreadPoolExecutor.DiscardOldestPolicy, ThreadPoolExecutor.DiscardPolicy
Constructor and Description |
---|
RejectableThreadPoolExecutor(int corePoolSize,
int maximumPoolSize,
long keepAliveTime,
TimeUnit unit,
BlockingQueue<Runnable> workQueue) |
RejectableThreadPoolExecutor(int corePoolSize,
int maximumPoolSize,
long keepAliveTime,
TimeUnit unit,
BlockingQueue<Runnable> workQueue,
RejectedExecutionHandler handler) |
RejectableThreadPoolExecutor(int corePoolSize,
int maximumPoolSize,
long keepAliveTime,
TimeUnit unit,
BlockingQueue<Runnable> workQueue,
ThreadFactory threadFactory) |
RejectableThreadPoolExecutor(int corePoolSize,
int maximumPoolSize,
long keepAliveTime,
TimeUnit unit,
BlockingQueue<Runnable> workQueue,
ThreadFactory threadFactory,
RejectedExecutionHandler handler) |
Modifier and Type | Method and Description |
---|---|
protected <T> RunnableFuture<T> |
newTaskFor(Callable<T> callable) |
protected <T> RunnableFuture<T> |
newTaskFor(Runnable runnable,
T value) |
String |
toString() |
afterExecute, allowCoreThreadTimeOut, allowsCoreThreadTimeOut, awaitTermination, beforeExecute, execute, finalize, getActiveCount, getCompletedTaskCount, getCorePoolSize, getKeepAliveTime, getLargestPoolSize, getMaximumPoolSize, getPoolSize, getQueue, getRejectedExecutionHandler, getTaskCount, getThreadFactory, isShutdown, isTerminated, isTerminating, prestartAllCoreThreads, prestartCoreThread, purge, remove, setCorePoolSize, setKeepAliveTime, setMaximumPoolSize, setRejectedExecutionHandler, setThreadFactory, shutdown, shutdownNow, terminated
public RejectableThreadPoolExecutor(int corePoolSize, int maximumPoolSize, long keepAliveTime, TimeUnit unit, BlockingQueue<Runnable> workQueue)
public RejectableThreadPoolExecutor(int corePoolSize, int maximumPoolSize, long keepAliveTime, TimeUnit unit, BlockingQueue<Runnable> workQueue, ThreadFactory threadFactory)
public RejectableThreadPoolExecutor(int corePoolSize, int maximumPoolSize, long keepAliveTime, TimeUnit unit, BlockingQueue<Runnable> workQueue, RejectedExecutionHandler handler)
public RejectableThreadPoolExecutor(int corePoolSize, int maximumPoolSize, long keepAliveTime, TimeUnit unit, BlockingQueue<Runnable> workQueue, ThreadFactory threadFactory, RejectedExecutionHandler handler)
protected <T> RunnableFuture<T> newTaskFor(Runnable runnable, T value)
newTaskFor
in class AbstractExecutorService
protected <T> RunnableFuture<T> newTaskFor(Callable<T> callable)
newTaskFor
in class AbstractExecutorService
public String toString()
toString
in class ThreadPoolExecutor
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