public class TimeoutObserverExecutorService extends Object implements FutureExecutorService
Future.get(long, TimeUnit) but done by a
background thread.| Constructor and Description |
|---|
TimeoutObserverExecutorService(ExecutorService executorService,
long timeout)
Constructs a timeout observer on top of an ExecutorService, exposing only executions of
Futures. |
| Modifier and Type | Method and Description |
|---|---|
<T> List<Future<T>> |
invokeAll(Collection<Callable<T>> tasks)
Executes the given tasks, returning a list of Futures holding their status and results when
all complete.
|
<T> List<Future<T>> |
invokeAll(Collection<Callable<T>> tasks,
long timeout,
TimeUnit unit)
Executes the given tasks, returning a list of Futures holding their status and results when
all complete or the timeout expires, whichever happens first.
|
void |
shutdown()
Initiates an orderly shutdown in which previously submitted tasks are executed, but no new
tasks will be accepted.
|
List<Runnable> |
shutdownNow()
Attempts to stop all actively executing tasks, halts the processing of waiting tasks, and
returns a list of the tasks that were awaiting execution.
|
<T> Future<T> |
submit(Callable<T> task)
Submits a value-returning task for execution and returns a Future representing the pending
results of the task.
|
Future<?> |
submit(Runnable task)
Submits a Runnable task for execution and returns a Future representing that task.
|
<T> Future<T> |
submit(Runnable task,
T result)
Submits a Runnable task for execution and returns a Future representing that task that will
upon completion return the given result
|
public TimeoutObserverExecutorService(ExecutorService executorService, long timeout)
Futures.executorService - The underlying executor servicetimeout - time in milliseconds to wait before interrupting a threads executionpublic <T> List<Future<T>> invokeAll(Collection<Callable<T>> tasks) throws InterruptedException
FutureExecutorServiceFuture.isDone() is true for each element of the returned list.
Note that a completed task could have terminated either normally or by throwing an
exception. The results of this method are undefined if the given collection is modified while
this operation is in progress.invokeAll in interface FutureExecutorServicetasks - the collection of tasksInterruptedException - if interrupted while waiting, in which case unfinished
tasks are cancelled.public <T> List<Future<T>> invokeAll(Collection<Callable<T>> tasks, long timeout, TimeUnit unit) throws InterruptedException
FutureExecutorServiceFuture.isDone() is
true for each element of the returned list. Upon return, tasks that have not
completed are cancelled. Note that a completed task could have terminated either
normally or by throwing an exception. The results of this method are undefined if the given
collection is modified while this operation is in progress.invokeAll in interface FutureExecutorServicetasks - the collection of taskstimeout - the maximum time to waitunit - the time unit of the timeout argumentInterruptedException - if interrupted while waiting, in which case unfinished
tasks are cancelled.public void shutdown()
FutureExecutorServiceshutdown in interface FutureExecutorServicepublic List<Runnable> shutdownNow()
FutureExecutorServiceThere are no guarantees beyond best-effort attempts to stop processing actively executing
tasks. For example, typical implementations will cancel via Thread.interrupt(), so if
any tasks mask or fail to respond to interrupts, they may never terminate.
shutdownNow in interface FutureExecutorServicepublic <T> Future<T> submit(Callable<T> task)
FutureExecutorServiceIf you would like to immediately block waiting for a task, you can use constructions of the form result = exec.submit(aCallable).get();
Note: The Executors class includes a set of methods that can convert some other
common closure-like objects, for example, PrivilegedAction to Callable form so they can be submitted.
submit in interface FutureExecutorServicetask - the task to submitpublic <T> Future<T> submit(Runnable task, T result)
FutureExecutorServicesubmit in interface FutureExecutorServicetask - the task to submitresult - the result to returnpublic Future<?> submit(Runnable task)
FutureExecutorServicesubmit in interface FutureExecutorServicetask - the task to submitCopyright © GigaSpaces.