io.netty.util.concurrent

类 AbstractScheduledEventExecutor

java.lang.Object

java.util.concurrent.AbstractExecutorService

io.netty.util.concurrent.AbstractEventExecutor

io.netty.util.concurrent.AbstractScheduledEventExecutor

所有已实现的接口:

EventExecutor, EventExecutorGroup, java.lang.Iterable<EventExecutor>, java.util.concurrent.Executor, java.util.concurrent.ExecutorService, java.util.concurrent.ScheduledExecutorService

直接已知子类:

GlobalEventExecutor, SingleThreadEventExecutor

public abstract class AbstractScheduledEventExecutor
extends AbstractEventExecutor

Abstract base class for EventExecutors that want to support scheduling.

嵌套类概要

从类继承的嵌套类/接口 io.netty.util.concurrent.AbstractEventExecutor

AbstractEventExecutor.LazyRunnable

构造器概要

构造器

限定符	构造器和说明
protected	AbstractScheduledEventExecutor()
protected	AbstractScheduledEventExecutor(EventExecutorGroup parent)

方法概要

限定符和类型	方法和说明
protected boolean	afterScheduledTaskSubmitted(long deadlineNanos) See beforeScheduledTaskSubmitted(long).
protected boolean	beforeScheduledTaskSubmitted(long deadlineNanos) Called from arbitrary non-EventExecutor threads prior to scheduled task submission.
protected void	cancelScheduledTasks() Cancel all scheduled tasks.
protected static long	deadlineToDelayNanos(long deadlineNanos) Given an arbitrary deadline deadlineNanos, calculate the number of nano seconds from now deadlineNanos would expire.
protected long	getCurrentTimeNanos() Get the current time in nanoseconds by this executor's clock.
protected boolean	hasScheduledTasks() Returns true if a scheduled task is ready for processing.
protected static long	initialNanoTime() The initial value used for delay and computations based upon a monatomic time source.
protected static long	nanoTime() 已过时。 Use the non-static getCurrentTimeNanos() instead.
protected long	nextScheduledTaskDeadlineNanos() Return the deadline (in nanoseconds) when the next scheduled task is ready to be run or -1 if no task is scheduled.
protected long	nextScheduledTaskNano() Return the nanoseconds until the next scheduled task is ready to be run or -1 if no task is scheduled.
protected java.lang.Runnable	pollScheduledTask()
protected java.lang.Runnable	pollScheduledTask(long nanoTime) Return the Runnable which is ready to be executed with the given nanoTime.
<V> ScheduledFuture<V>	schedule(java.util.concurrent.Callable<V> callable, long delay, java.util.concurrent.TimeUnit unit)
ScheduledFuture<?>	schedule(java.lang.Runnable command, long delay, java.util.concurrent.TimeUnit unit)
ScheduledFuture<?>	scheduleAtFixedRate(java.lang.Runnable command, long initialDelay, long period, java.util.concurrent.TimeUnit unit)
ScheduledFuture<?>	scheduleWithFixedDelay(java.lang.Runnable command, long initialDelay, long delay, java.util.concurrent.TimeUnit unit)
protected void	validateScheduled(long amount, java.util.concurrent.TimeUnit unit) 已过时。 will be removed in the future.

从类继承的方法 io.netty.util.concurrent.AbstractEventExecutor

inEventLoop, iterator, lazyExecute, newFailedFuture, newProgressivePromise, newPromise, newSucceededFuture, newTaskFor, newTaskFor, next, parent, runTask, safeExecute, shutdown, shutdownGracefully, shutdownNow, submit, submit, submit

从类继承的方法 java.util.concurrent.AbstractExecutorService

invokeAll, invokeAll, invokeAny, invokeAny

从类继承的方法 java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

从接口继承的方法 io.netty.util.concurrent.EventExecutor

inEventLoop

从接口继承的方法 io.netty.util.concurrent.EventExecutorGroup

isShuttingDown, shutdownGracefully, terminationFuture

从接口继承的方法 java.util.concurrent.ExecutorService

awaitTermination, invokeAll, invokeAll, invokeAny, invokeAny, isShutdown, isTerminated

从接口继承的方法 java.util.concurrent.Executor

execute

从接口继承的方法 java.lang.Iterable

forEach, spliterator

构造器详细资料

AbstractScheduledEventExecutor

protected AbstractScheduledEventExecutor()

AbstractScheduledEventExecutor

protected AbstractScheduledEventExecutor(EventExecutorGroup parent)

方法详细资料

getCurrentTimeNanos

protected long getCurrentTimeNanos()

Get the current time in nanoseconds by this executor's clock. This is not the same as System.nanoTime() for two reasons:

• We apply a fixed offset to the nanoTime
• Implementations (in particular EmbeddedEventLoop) may use their own time source so they can control time for testing purposes.

nanoTime

@Deprecated
protected static long nanoTime()

已过时。 Use the non-static getCurrentTimeNanos() instead.

deadlineToDelayNanos

protected static long deadlineToDelayNanos(long deadlineNanos)

Given an arbitrary deadline deadlineNanos, calculate the number of nano seconds from now deadlineNanos would expire.

参数:

deadlineNanos - An arbitrary deadline in nano seconds.

返回:

the number of nano seconds from now deadlineNanos would expire.

initialNanoTime

protected static long initialNanoTime()

The initial value used for delay and computations based upon a monatomic time source.

返回:

initial value used for delay and computations based upon a monatomic time source.

cancelScheduledTasks

protected void cancelScheduledTasks()

Cancel all scheduled tasks. This method MUST be called only when AbstractEventExecutor.inEventLoop() is true.

pollScheduledTask

protected final java.lang.Runnable pollScheduledTask()

另请参阅:

pollScheduledTask(long)

pollScheduledTask

protected final java.lang.Runnable pollScheduledTask(long nanoTime)

Return the Runnable which is ready to be executed with the given nanoTime. You should use getCurrentTimeNanos() to retrieve the correct nanoTime.

nextScheduledTaskNano

protected final long nextScheduledTaskNano()

Return the nanoseconds until the next scheduled task is ready to be run or -1 if no task is scheduled.

nextScheduledTaskDeadlineNanos

protected final long nextScheduledTaskDeadlineNanos()

Return the deadline (in nanoseconds) when the next scheduled task is ready to be run or -1 if no task is scheduled.

hasScheduledTasks

protected final boolean hasScheduledTasks()

Returns true if a scheduled task is ready for processing.

schedule

public ScheduledFuture<?> schedule(java.lang.Runnable command,
                                   long delay,
                                   java.util.concurrent.TimeUnit unit)

指定者:

schedule 在接口中 EventExecutorGroup

指定者:

schedule 在接口中 java.util.concurrent.ScheduledExecutorService

覆盖:

schedule 在类中 AbstractEventExecutor

schedule

public <V> ScheduledFuture<V> schedule(java.util.concurrent.Callable<V> callable,
                                       long delay,
                                       java.util.concurrent.TimeUnit unit)

指定者:

schedule 在接口中 EventExecutorGroup

指定者:

schedule 在接口中 java.util.concurrent.ScheduledExecutorService

覆盖:

schedule 在类中 AbstractEventExecutor

scheduleAtFixedRate

public ScheduledFuture<?> scheduleAtFixedRate(java.lang.Runnable command,
                                              long initialDelay,
                                              long period,
                                              java.util.concurrent.TimeUnit unit)

指定者:

scheduleAtFixedRate 在接口中 EventExecutorGroup

指定者:

scheduleAtFixedRate 在接口中 java.util.concurrent.ScheduledExecutorService

覆盖:

scheduleAtFixedRate 在类中 AbstractEventExecutor

scheduleWithFixedDelay

public ScheduledFuture<?> scheduleWithFixedDelay(java.lang.Runnable command,
                                                 long initialDelay,
                                                 long delay,
                                                 java.util.concurrent.TimeUnit unit)

指定者:

scheduleWithFixedDelay 在接口中 EventExecutorGroup

指定者:

scheduleWithFixedDelay 在接口中 java.util.concurrent.ScheduledExecutorService

覆盖:

scheduleWithFixedDelay 在类中 AbstractEventExecutor

validateScheduled

@Deprecated
protected void validateScheduled(long amount,
                                              java.util.concurrent.TimeUnit unit)

已过时。 will be removed in the future.

Sub-classes may override this to restrict the maximal amount of time someone can use to schedule a task.

beforeScheduledTaskSubmitted

protected boolean beforeScheduledTaskSubmitted(long deadlineNanos)

Called from arbitrary non-EventExecutor threads prior to scheduled task submission. Returns true if the EventExecutor thread should be woken immediately to process the scheduled task (if not already awake).

If false is returned, afterScheduledTaskSubmitted(long) will be called with the same value after the scheduled task is enqueued, providing another opportunity to wake the EventExecutor thread if required.

参数:

deadlineNanos - deadline of the to-be-scheduled task relative to getCurrentTimeNanos()

返回:

true if the EventExecutor thread should be woken, false otherwise

afterScheduledTaskSubmitted

protected boolean afterScheduledTaskSubmitted(long deadlineNanos)

See beforeScheduledTaskSubmitted(long). Called only after that method returns false.

参数:

deadlineNanos - relative to getCurrentTimeNanos()

返回:

true if the EventExecutor thread should be woken, false otherwise