Netty 5.0.0.Alpha5 · io.netty5.util.concurrent.EventExecutorGroup

Method Summary

Modifier and Type	Method and Description
public default boolean	Returns: `true` if the executor group terminated within the specific timeout. awaitTermination(long The non-negative maximum amount of time to wait for the executor group to terminate. timeout, TimeUnit The non-null time unit of the timeout. unit) Wait for this `EventExecutorGroup` to terminate, up to the given timeout.
public default void	execute(Runnable the runnable task task) Implements java.util.concurrent.Executor.execute. Executes the given command at some time in the future.
public boolean	Returns: `true` if all executors in this group have shut down and are no longer accepting any new tasks. 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.
public boolean	Returns: `true` if all executors in this group have at least started shutting down, otherwise `false`. isShuttingDown() Returns `true` if and only if all `EventExecutor`s managed by this `EventExecutorGroup` are being shut down gracefully or was shut down.
public default boolean	Returns: `true` if all executors in this group have terminated. isTerminated() Returns `true` if all `EventExecutor`s managed by this `EventExecutorGroup` are shut down, and all of their tasks have completed.
public Iterator<EventExecutor>	iterator() Redeclares java.lang.Iterable.iterator. Returns an iterator over elements of type `T`.
public EventExecutor	next() Returns one of the `EventExecutor`s managed by this `EventExecutorGroup`.
public default Future<Void>	Returns: A future that represents the completion of the scheduled task. schedule(Runnable The task that should be executed in this `EventExecutorGroup` after the given delay. task, long A positive time delay, in the given time unit. delay, TimeUnit The non-null time unit for the delay. 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.
public default < The type of the future result. V> Future<V>	Returns: A future that represents the completion of the scheduled task. schedule(Callable<V> The task that should be executed in this `EventExecutorGroup` after the given delay. task, long A positive time delay, in the given time unit. delay, TimeUnit The non-null time unit for the delay. 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.
public default Future<Void>	Returns: A future that represents the recurring task, and which can be cancelled to stop future executions. scheduleAtFixedRate(Runnable The task that should be scheduled to execute at a fixed rate in this `EventExecutorGroup`. task, long The positive initial delay for the first task execution, in terms of the given time unit. initialDelay, long The positive period for the execution frequency to use after the first execution has started, in terms of the given time unit. period, TimeUnit The non-null time unit for the delay and period. unit) Schedule the given task for periodic execution in the next available `EventExecutor`.
public default Future<Void>	Returns: A future that represents the recurring task, and which can be cancelled to stop future executions. scheduleWithFixedDelay(Runnable The task that should be scheduled to execute with fixed delays in this `EventExecutorGroup`. task, long The positive initial delay for the first task execution, in terms of the given time unit. initialDelay, long The positive subsequent delay between task, to use after the first execution has completed, in terms of the given time unit. delay, TimeUnit The non-null time unit for the delays. unit) Schedule the given task for periodic execution in the next available `EventExecutor`.
public default Future<Void>	Returns: the `terminationFuture()` shutdownGracefully() Shortcut method for `shutdownGracefully(long, long, TimeUnit)` with sensible default values.
public Future<Void>	Returns: the `terminationFuture()` shutdownGracefully(long the quiet period as described in the documentation quietPeriod, long the maximum amount of time to wait until the executor is shutting down regardless if a task was submitted during the quiet period. timeout, TimeUnit the unit of `quietPeriod` and `timeout` unit) Signals this executor that the caller wants the executor to be shut down.
public default Future<Void>	Returns: A future that represents the completion of the submitted task. submit(Runnable The task that should be executed in this `EventExecutorGroup`. task) Submit the given task for execution in the next available `EventExecutor` in this group, and return a future that produces a `null` result when the task completes.
public default < The type of the future result. T> Future<T>	Returns: A future that represents the completion of the submitted task. submit(Runnable The task that should be executed in this `EventExecutorGroup`. task, T The value that the returned future will complete with, if the task completes successfully. result) Submit the given task for execution in the next available `EventExecutor` in this group, and return a future that produces the given result when the task completes.
public default < The type of the future result. T> Future<T>	Returns: A future that represents the completion of the submitted task. submit(Callable<T> The task that should be executed in this `EventExecutorGroup`. task) Submit the given task for execution in the next available `EventExecutor` in this group, and return a future that will return the result of the callable when the task completes.
public Future<Void>	Returns: The `Future` representing the termination of this `EventExecutorGroup`. terminationFuture() Returns the `Future` which is notified when all `EventExecutor`s managed by this `EventExecutorGroup` have been terminated.

Inherited from java.lang.Iterable:: forEach spliterator

Method Detail

awaitTermination back to summary

awaitTermination	back to summary
public default boolean awaitTermination(long timeout, TimeUnit unit) throws InterruptedException Wait for this `EventExecutorGroup` to terminate, up to the given timeout. Parameters timeout:long The non-negative maximum amount of time to wait for the executor group to terminate. unit:TimeUnit The non-null time unit of the timeout. Returns:boolean `true` if the executor group terminated within the specific timeout. Exceptions InterruptedException: If this thread was interrupted while waiting for executor group to terminate.

public default boolean awaitTermination(long timeout, TimeUnit unit) throws InterruptedException

Wait for this EventExecutorGroup to terminate, up to the given timeout.

Parameters

timeout:long: The non-negative maximum amount of time to wait for the executor group to terminate.
unit:TimeUnit: The non-null time unit of the timeout.

Returns:boolean

true if the executor group terminated within the specific timeout.

Exceptions

InterruptedException:: If this thread was interrupted while waiting for executor group to terminate.

execute back to summary

execute	back to summary
public default void execute(Runnable task) Implements java.util.concurrent.Executor.execute. Doc from java.util.concurrent.Executor.execute. Executes the given command at some time in the future. The command may execute in a new thread, in a pooled thread, or in the calling thread, at the discretion of the `Executor` implementation. Parameters task:Runnable the runnable task Annotations @Override

public default void execute(Runnable task)

Implements java.util.concurrent.Executor.execute.

Doc from java.util.concurrent.Executor.execute.

Executes the given command at some time in the future. The command may execute in a new thread, in a pooled thread, or in the calling thread, at the discretion of the Executor implementation.

Parameters

task:Runnable: the runnable task

Annotations

@Override

isShutdown back to summary

isShutdown	back to summary
public 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. 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:boolean `true` if all executors in this group have shut down and are no longer accepting any new tasks.

public boolean isShutdown()

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:boolean: true if all executors in this group have shut down and are no longer accepting any new tasks.

isShuttingDown back to summary

isShuttingDown	back to summary
public boolean isShuttingDown() Returns `true` if and only if all `EventExecutor`s 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:boolean `true` if all executors in this group have at least started shutting down, otherwise `false`.

public boolean isShuttingDown()

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:boolean: true if all executors in this group have at least started shutting down, otherwise false.

isTerminated back to summary

isTerminated	back to summary
public default boolean isTerminated() Returns `true` if all `EventExecutor`s managed by this `EventExecutorGroup` are shut down, and all of their tasks have completed. Returns:boolean `true` if all executors in this group have terminated.

public default boolean isTerminated()

Returns true if all EventExecutors managed by this EventExecutorGroup are shut down, and all of their tasks have completed.

Returns:boolean: true if all executors in this group have terminated.

iterator back to summary

iterator	back to summary
public Iterator<EventExecutor> iterator() Redeclares java.lang.Iterable.iterator. Doc from java.lang.Iterable.iterator. Returns an iterator over elements of type `T`. Returns:Iterator<EventExecutor> an Iterator. Annotations @Override

public Iterator<EventExecutor> iterator()

Redeclares java.lang.Iterable.iterator.

Doc from java.lang.Iterable.iterator.

Returns an iterator over elements of type T.

Returns:Iterator<EventExecutor>

an Iterator.

Annotations

@Override

next	back to summary
public EventExecutor next() Returns one of the `EventExecutor`s managed by this `EventExecutorGroup`.

schedule back to summary

schedule	back to summary
public default 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. Parameters task:Runnable The task that should be executed in this `EventExecutorGroup` after the given delay. delay:long A positive time delay, in the given time unit. unit:TimeUnit The non-null time unit for the delay. Returns:Future<Void> A future that represents the completion of the scheduled task.

public default 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.

Parameters

task:Runnable: The task that should be executed in this EventExecutorGroup after the given delay.
delay:long: A positive time delay, in the given time unit.
unit:TimeUnit: The non-null time unit for the delay.

Returns:Future<Void>

A future that represents the completion of the scheduled task.

schedule back to summary

schedule	back to summary
public default <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. Parameters <V> The type of the future result. task:Callable<V> The task that should be executed in this `EventExecutorGroup` after the given delay. delay:long A positive time delay, in the given time unit. unit:TimeUnit The non-null time unit for the delay. Returns:Future<V> A future that represents the completion of the scheduled task.

public default <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.

Parameters

<V>: The type of the future result.
task:Callable<V>: The task that should be executed in this EventExecutorGroup after the given delay.
delay:long: A positive time delay, in the given time unit.
unit:TimeUnit: The non-null time unit for the delay.

Returns:Future<V>

A future that represents the completion of the scheduled task.

scheduleAtFixedRate back to summary

scheduleAtFixedRate	back to summary
public default Future<Void> scheduleAtFixedRate(Runnable task, long initialDelay, long period, TimeUnit unit) 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:Runnable The task that should be scheduled to execute at a fixed rate in this `EventExecutorGroup`. initialDelay:long The positive initial delay for the first task execution, in terms of the given time unit. period:long The positive period for the execution frequency to use after the first execution has started, in terms of the given time unit. unit:TimeUnit The non-null time unit for the delay and period. Returns:Future<Void> A future that represents the recurring task, and which can be cancelled to stop future executions.

public default Future<Void> scheduleAtFixedRate(Runnable task, long initialDelay, long period, TimeUnit unit)

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:Runnable: The task that should be scheduled to execute at a fixed rate in this EventExecutorGroup.
initialDelay:long: The positive initial delay for the first task execution, in terms of the given time unit.
period:long: The positive period for the execution frequency to use after the first execution has started, in terms of the given time unit.
unit:TimeUnit: The non-null time unit for the delay and period.

Returns:Future<Void>

A future that represents the recurring task, and which can be cancelled to stop future executions.

scheduleWithFixedDelay back to summary

scheduleWithFixedDelay	back to summary
public default Future<Void> scheduleWithFixedDelay(Runnable task, long initialDelay, long delay, TimeUnit unit) 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 `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:Runnable The task that should be scheduled to execute with fixed delays in this `EventExecutorGroup`. initialDelay:long The positive initial delay for the first task execution, in terms of the given time unit. delay:long The positive subsequent delay between task, to use after the first execution has completed, in terms of the given time unit. unit:TimeUnit The non-null time unit for the delays. Returns:Future<Void> A future that represents the recurring task, and which can be cancelled to stop future executions.

public default Future<Void> scheduleWithFixedDelay(Runnable task, long initialDelay, long delay, TimeUnit unit)

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 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:Runnable: The task that should be scheduled to execute with fixed delays in this EventExecutorGroup.
initialDelay:long: The positive initial delay for the first task execution, in terms of the given time unit.
delay:long: The positive subsequent delay between task, to use after the first execution has completed, in terms of the given time unit.
unit:TimeUnit: The non-null time unit for the delays.

Returns:Future<Void>

A future that represents the recurring task, and which can be cancelled to stop future executions.

shutdownGracefully back to summary

shutdownGracefully	back to summary
public default Future<Void> shutdownGracefully() Shortcut method for `shutdownGracefully(long, long, TimeUnit)` with sensible default values. Returns:Future<Void> the `terminationFuture()`

public default Future<Void> shutdownGracefully()

Shortcut method for shutdownGracefully(long, long, TimeUnit) with sensible default values.

Returns:Future<Void>: the terminationFuture()

shutdownGracefully back to summary

shutdownGracefully	back to summary
public Future<Void> shutdownGracefully(long quietPeriod, long timeout, TimeUnit unit) Signals this executor that the caller wants the executor to be shut down. Once this method is called, `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:long the quiet period as described in the documentation timeout:long the maximum amount of time to wait until the executor is shutting down regardless if a task was submitted during the quiet period. unit:TimeUnit the unit of `quietPeriod` and `timeout` Returns:Future<Void> the `terminationFuture()`

public Future<Void> shutdownGracefully(long quietPeriod, long timeout, TimeUnit unit)

Signals this executor that the caller wants the executor to be shut down. Once this method is called, 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:long: the quiet period as described in the documentation
timeout:long: the maximum amount of time to wait until the executor is shutting down regardless if a task was submitted during the quiet period.
unit:TimeUnit: the unit of quietPeriod and timeout

Returns:Future<Void>

the terminationFuture()

submit back to summary

submit	back to summary
public default Future<Void> submit(Runnable task) Submit the given task for execution in the next available `EventExecutor` in this group, and return a future that produces a `null` result when the task completes. Parameters task:Runnable The task that should be executed in this `EventExecutorGroup`. Returns:Future<Void> A future that represents the completion of the submitted task.

public default Future<Void> submit(Runnable task)

Submit the given task for execution in the next available EventExecutor in this group, and return a future that produces a null result when the task completes.

Parameters

task:Runnable: The task that should be executed in this EventExecutorGroup.

Returns:Future<Void>

A future that represents the completion of the submitted task.

submit back to summary

submit	back to summary
public default <T> Future<T> submit(Runnable task, T result) Submit the given task for execution in the next available `EventExecutor` in this group, and return a future that produces the given result when the task completes. Parameters <T> The type of the future result. task:Runnable The task that should be executed in this `EventExecutorGroup`. result:T The value that the returned future will complete with, if the task completes successfully. Returns:Future<T> A future that represents the completion of the submitted task.

public default <T> Future<T> submit(Runnable task, T result)

Submit the given task for execution in the next available EventExecutor in this group, and return a future that produces the given result when the task completes.

Parameters

<T>: The type of the future result.
task:Runnable: The task that should be executed in this EventExecutorGroup.
result:T: The value that the returned future will complete with, if the task completes successfully.

Returns:Future<T>

A future that represents the completion of the submitted task.

submit back to summary

submit	back to summary
public default <T> Future<T> submit(Callable<T> task) Submit the given task for execution in the next available `EventExecutor` in this group, and return a future that will return the result of the callable when the task completes. Parameters <T> The type of the future result. task:Callable<T> The task that should be executed in this `EventExecutorGroup`. Returns:Future<T> A future that represents the completion of the submitted task.

public default <T> Future<T> submit(Callable<T> task)

Submit the given task for execution in the next available EventExecutor in this group, and return a future that will return the result of the callable when the task completes.

Parameters

<T>: The type of the future result.
task:Callable<T>: The task that should be executed in this EventExecutorGroup.

Returns:Future<T>

A future that represents the completion of the submitted task.

terminationFuture back to summary

terminationFuture	back to summary
public Future<Void> terminationFuture() Returns the `Future` which is notified when all `EventExecutor`s managed by this `EventExecutorGroup` have been terminated. Returns:Future<Void> The `Future` representing the termination of this `EventExecutorGroup`.

public Future<Void> terminationFuture()

Returns the Future which is notified when all EventExecutors managed by this EventExecutorGroup have been terminated.

Returns:Future<Void>: The Future representing the termination of this EventExecutorGroup.

public Interface EventExecutorGroup

Method Summary

Method Detail