java.lang.Object
- io.netty5.util.concurrent.AbstractEventExecutor
- - io.netty5.util.concurrent.ImmediateEventExecutor

All Implemented Interfaces:

EventExecutor, EventExecutorGroup, FuturePromiseFactory, Iterable<EventExecutor>, Executor
```
public final class ImmediateEventExecutor
extends AbstractEventExecutor
```
Executes Runnable objects in the caller's thread. If the execute(Runnable) is reentrant it will be queued until the original Runnable finishes execution.
All Throwable objects thrown from execute(Runnable) will be swallowed and logged. This is to ensure that all queued Runnable objects have the chance to be run.

Field Summary

Fields
Modifier and Type Field Description

static ImmediateEventExecutor INSTANCE

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`boolean`	`awaitTermination(long timeout, TimeUnit unit)`	Wait for this `EventExecutorGroup` to terminate, up to the given timeout.
`void`	`execute(Runnable task)`
`boolean`	`inEventLoop(Thread thread)`	Return `true` if the given `Thread` is executed in the event loop, `false` otherwise.
`boolean`	`isShutdown()`	Returns `true` if all `EventExecutor`s managed by this `EventExecutorGroup` have been shut down gracefully and moved past the grace period so that they are no longer accepting any new tasks.
`boolean`	`isShuttingDown()`	Returns `true` if and only if all `EventExecutor`s managed by this `EventExecutorGroup` are being shut down gracefully or was shut down.
`boolean`	`isTerminated()`	Returns `true` if all `EventExecutor`s managed by this `EventExecutorGroup` are shut down, and all of their tasks have completed.
`<V> Promise<V>`	`newPromise()`	Return a new `Promise`.
`Future<Void>`	`schedule(Runnable task, long delay, TimeUnit unit)`	Schedule the given task for execution after the given delay, in the next available `EventExecutor` in this group, and return a future that produces a `null` result when the task completes.
`<V> Future<V>`	`schedule(Callable<V> task, long delay, TimeUnit unit)`	Schedule the given task for execution after the given delay, in the next available `EventExecutor` in this group, and return a future that will return the result of the callable when the task completes.
`Future<Void>`	`scheduleAtFixedRate(Runnable task, long initialDelay, long period, TimeUnit unit)`	Schedule the given task for periodic execution in the next available `EventExecutor`.
`Future<Void>`	`scheduleWithFixedDelay(Runnable task, long initialDelay, long delay, TimeUnit unit)`	Schedule the given task for periodic execution in the next available `EventExecutor`.
`Future<Void>`	`shutdownGracefully(long quietPeriod, long timeout, TimeUnit unit)`	Signals this executor that the caller wants the executor to be shut down.
`Future<Void>`	`terminationFuture()`	Returns the `Future` which is notified when all `EventExecutor`s managed by this `EventExecutorGroup` have been terminated.

Methods inherited from class io.netty5.util.concurrent.AbstractEventExecutor
newSucceededFuture, newTaskFor, newTaskFor, submit, submit, submit

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

Methods inherited from interface io.netty5.util.concurrent.EventExecutor
inEventLoop, iterator, newFailedFuture, next

Methods inherited from interface io.netty5.util.concurrent.EventExecutorGroup
shutdownGracefully

Methods inherited from interface io.netty5.util.concurrent.FuturePromiseFactory
newSucceededFuture

Methods inherited from interface java.lang.Iterable
forEach, spliterator

- Field Detail
  - INSTANCE
```
public static final ImmediateEventExecutor INSTANCE
```
- Method Detail
  - inEventLoop
```
public boolean inEventLoop(Thread thread)
```
    Description copied from interface: EventExecutor
    
    Return true if the given Thread is executed in the event loop, false otherwise.
  - shutdownGracefully
```
public Future<Void> shutdownGracefully(long quietPeriod,
                                       long timeout,
                                       TimeUnit unit)
```
    Description copied from interface: EventExecutorGroup
    
    Signals this executor that the caller wants the executor to be shut down. Once this method is called, EventExecutorGroup.isShuttingDown() starts to return true, and the executor prepares to shut itself down. This method ensures that no tasks are submitted for 'the quiet period' (usually a couple seconds) before it shuts itself down. If a task is submitted during the quiet period, it is guaranteed to be accepted and the quiet period will start over.
    
    Parameters:
    
    quietPeriod - the quiet period as described in the documentation
    
    timeout - the maximum amount of time to wait until the executor is shutting down regardless if a task was submitted during the quiet period.
    
    unit - the unit of quietPeriod and timeout
    
    Returns:
    
    the EventExecutorGroup.terminationFuture()
  - terminationFuture
```
public Future<Void> terminationFuture()
```
    Description copied from interface: EventExecutorGroup
    
    Returns the Future which is notified when all EventExecutors managed by this EventExecutorGroup have been terminated.
    
    Returns:
    
    The Future representing the termination of this EventExecutorGroup.
  - isShuttingDown
```
public boolean isShuttingDown()
```
    Description copied from interface: EventExecutorGroup
    
    Returns true if and only if all EventExecutors managed by this EventExecutorGroup are being shut down gracefully or was shut down.
    An executor group that "is shutting down" can still accept new tasks for a little while (the grace period), but will eventually start rejecting new tasks. At that point, the executor group will be shut down.
    
    Returns:
    
    true if all executors in this group have at least started shutting down, otherwise false.
  - isShutdown
```
public boolean isShutdown()
```
    Description copied from interface: EventExecutorGroup
    
    Returns true if all EventExecutors managed by this EventExecutorGroup have been shut down gracefully and moved past the grace period so that they are no longer accepting any new tasks.
    An executor group that "is shut down" might still be executing tasks that it has queued up, but it will no longer be accepting any new tasks. Once all running and queued tasks have completed, the executor group will be terminated.
    
    Returns:
    
    true if all executors in this group have shut down and are no longer accepting any new tasks.
  - isTerminated
```
public boolean isTerminated()
```
    Description copied from interface: EventExecutorGroup
    
    Returns true if all EventExecutors managed by this EventExecutorGroup are shut down, and all of their tasks have completed.
    
    Returns:
    
    true if all executors in this group have terminated.
  - awaitTermination
```
public boolean awaitTermination(long timeout,
                                TimeUnit unit)
```
    Description copied from interface: EventExecutorGroup
    
    Wait for this EventExecutorGroup to terminate, up to the given timeout.
    
    Parameters:
    
    timeout - The non-negative maximum amount of time to wait for the executor group to terminate.
    
    unit - The non-null time unit of the timeout.
    
    Returns:
    
    true if the executor group terminated within the specific timeout.
  - execute
```
public void execute(Runnable task)
```
  - newPromise
```
public <V> Promise<V> newPromise()
```
    Description copied from interface: EventExecutor
    
    Return a new Promise.
  - schedule
```
public Future<Void> schedule(Runnable task,
                             long delay,
                             TimeUnit unit)
```
    Description copied from interface: EventExecutorGroup
    
    Schedule the given task for execution after the given delay, in the next available EventExecutor in this group, and return a future that produces a null result when the task completes.
    
    Parameters:
    
    task - The task that should be executed in this EventExecutorGroup after the given delay.
    
    delay - A positive time delay, in the given time unit.
    
    unit - The non-null time unit for the delay.
    
    Returns:
    
    A future that represents the completion of the scheduled task.
  - schedule
```
public <V> Future<V> schedule(Callable<V> task,
                              long delay,
                              TimeUnit unit)
```
    Description copied from interface: EventExecutorGroup
    
    Schedule the given task for execution after the given delay, in the next available EventExecutor in this group, and return a future that will return the result of the callable when the task completes.
    
    Type Parameters:
    
    V - The type of the future result.
    
    Parameters:
    
    task - The task that should be executed in this EventExecutorGroup after the given delay.
    
    delay - A positive time delay, in the given time unit.
    
    unit - The non-null time unit for the delay.
    
    Returns:
    
    A future that represents the completion of the scheduled task.
  - scheduleAtFixedRate
```
public Future<Void> scheduleAtFixedRate(Runnable task,
                                        long initialDelay,
                                        long period,
                                        TimeUnit unit)
```
    Description copied from interface: EventExecutorGroup
    
    Schedule the given task for periodic execution in the next available EventExecutor. The first execution will occur after the given initial delay, and the following repeated executions will occur with the given period of time between each execution is started. If the task takes longer to complete than the requested period, then the following executions will be delayed, rather than allowing multiple instances of the task to run concurrently.
    The task will be executed repeatedly until it either fails with an exception, or its future is cancelled. The future thus will never complete successfully.
    
    Parameters:
    
    task - The task that should be scheduled to execute at a fixed rate in this EventExecutorGroup.
    
    initialDelay - The positive initial delay for the first task execution, in terms of the given time unit.
    
    period - The positive period for the execution frequency to use after the first execution has started, in terms of the given time unit.
    
    unit - The non-null time unit for the delay and period.
    
    Returns:
    
    A future that represents the recurring task, and which can be cancelled to stop future executions.
  - scheduleWithFixedDelay
```
public Future<Void> scheduleWithFixedDelay(Runnable task,
                                           long initialDelay,
                                           long delay,
                                           TimeUnit unit)
```
    Description copied from interface: EventExecutorGroup
    
    Schedule the given task for periodic execution in the next available EventExecutor. The first execution will occur after the given initial delay, and the following repeated executions will occur with the given subsequent delay between one task completing and the next task starting. The delay from the completion of one task, to the start of the next, stays unchanged regardless of how long a task takes to complete.
    This is in contrast to EventExecutorGroup.scheduleAtFixedRate(Runnable, long, long, TimeUnit) which varies the delays between the tasks in order to hit a given frequency.
    The task will be executed repeatedly until it either fails with an exception, or its future is cancelled. The future thus will never complete successfully.
    
    Parameters:
    
    task - The task that should be scheduled to execute with fixed delays in this EventExecutorGroup.
    
    initialDelay - The positive initial delay for the first task execution, in terms of the given time unit.
    
    delay - The positive subsequent delay between task, to use after the first execution has completed, in terms of the given time unit.
    
    unit - The non-null time unit for the delays.
    
    Returns:
    
    A future that represents the recurring task, and which can be cancelled to stop future executions.

Class ImmediateEventExecutor

Field Summary

Method Summary

Methods inherited from class io.netty5.util.concurrent.AbstractEventExecutor

Methods inherited from class java.lang.Object

Methods inherited from interface io.netty5.util.concurrent.EventExecutor

Methods inherited from interface io.netty5.util.concurrent.EventExecutorGroup

Methods inherited from interface io.netty5.util.concurrent.FuturePromiseFactory

Methods inherited from interface java.lang.Iterable

Field Detail

INSTANCE

Method Detail

inEventLoop

shutdownGracefully

terminationFuture

isShuttingDown

isShutdown

isTerminated

awaitTermination

execute

newPromise

schedule

schedule

scheduleAtFixedRate

scheduleWithFixedDelay