java.lang.Object
- com.google.android.exoplayer2.util.RunnableFutureTask<R,E>

Type Parameters:

R - The type of the result.

E - The type of any ExecutionException cause.

All Implemented Interfaces:

Runnable, Future<R>, RunnableFuture<R>
```
public abstract class RunnableFutureTask<R,E extends Exception>
extends Object
implements RunnableFuture<R>
```
A RunnableFuture that supports additional uninterruptible operations to query whether execution has started and finished.

Constructor Summary

Constructors
Modifier Constructor Description

protected RunnableFutureTask()

Method Summary

All Methods Instance Methods Abstract Methods Concrete Methods
Modifier and Type	Method	Description
`void`	`blockUntilFinished()`	Blocks until the task has finished, or has been canceled without having been started.
`void`	`blockUntilStarted()`	Blocks until the task has started, or has been canceled without having been started.
`boolean`	`cancel(boolean interruptIfRunning)`
`protected void`	`cancelWork()`	Cancels any work being done by `doWork()`.
`protected abstract R`	`doWork()`	Performs the work or computation.
`R`	`get()`
`R`	`get(long timeout, TimeUnit unit)`
`boolean`	`isCancelled()`
`boolean`	`isDone()`
`void`	`run()`

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - RunnableFutureTask
```
protected RunnableFutureTask()
```
- Method Detail
  - blockUntilStarted
```
public final void blockUntilStarted()
```
    Blocks until the task has started, or has been canceled without having been started.
  - blockUntilFinished
```
public final void blockUntilFinished()
```
    Blocks until the task has finished, or has been canceled without having been started.
  - get
```
public final R get()
            throws ExecutionException,
                   InterruptedException
```
    Specified by:
    
    get in interface Future<R>
    
    Throws:
    
    ExecutionException
    
    InterruptedException
  - get
```
public final R get(long timeout,
                   TimeUnit unit)
            throws ExecutionException,
                   InterruptedException,
                   TimeoutException
```
    Specified by:
    
    get in interface Future<R>
    
    Throws:
    
    ExecutionException
    
    InterruptedException
    
    TimeoutException
  - cancel
```
public final boolean cancel(boolean interruptIfRunning)
```
    Specified by:
    
    cancel in interface Future<R>
  - isDone
```
public final boolean isDone()
```
    Specified by:
    
    isDone in interface Future<R>
  - isCancelled
```
public final boolean isCancelled()
```
    Specified by:
    
    isCancelled in interface Future<R>
  - run
```
public final void run()
```
    Specified by:
    
    run in interface Runnable
    
    Specified by:
    
    run in interface RunnableFuture<R>
  - doWork
```
protected abstract R doWork()
                     throws E extends Exception
```
    Performs the work or computation.
    
    Returns:
    
    The computed result.
    
    Throws:
    
    E - If an error occurred.
    
    E extends Exception
  - cancelWork
```
protected void cancelWork()
```
    Cancels any work being done by doWork(). If doWork() is currently executing then the thread on which it's executing may be interrupted immediately after this method returns.
    The default implementation does nothing.

Class RunnableFutureTask<R,​E extends Exception>

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

RunnableFutureTask

Method Detail

blockUntilStarted

blockUntilFinished

get

get

cancel

isDone

isCancelled

run

doWork

cancelWork

Class RunnableFutureTask<R,E extends Exception>