io.netty.channel.epoll

Class EpollEventLoop

java.lang.Object

java.util.concurrent.AbstractExecutorService

io.netty.util.concurrent.AbstractEventExecutor

io.netty.util.concurrent.AbstractScheduledEventExecutor

io.netty.util.concurrent.SingleThreadEventExecutor

io.netty.channel.SingleThreadEventLoop

io.netty.channel.epoll.EpollEventLoop

All Implemented Interfaces:

io.netty.channel.EventLoop, io.netty.channel.EventLoopGroup, io.netty.util.concurrent.EventExecutor, io.netty.util.concurrent.EventExecutorGroup, io.netty.util.concurrent.OrderedEventExecutor, Iterable<io.netty.util.concurrent.EventExecutor>, Executor, ExecutorService, ScheduledExecutorService

public class EpollEventLoop
extends io.netty.channel.SingleThreadEventLoop

EventLoop which uses epoll under the covers. Only works on Linux!

Nested Class Summary

Nested classes/interfaces inherited from class io.netty.channel.SingleThreadEventLoop

io.netty.channel.SingleThreadEventLoop.ChannelsReadOnlyIterator<T extends io.netty.channel.Channel>

Nested classes/interfaces inherited from class io.netty.util.concurrent.SingleThreadEventExecutor

io.netty.util.concurrent.SingleThreadEventExecutor.NonWakeupRunnable

Nested classes/interfaces inherited from class io.netty.util.concurrent.AbstractEventExecutor

io.netty.util.concurrent.AbstractEventExecutor.LazyRunnable

Field Summary

Fields inherited from class io.netty.channel.SingleThreadEventLoop

DEFAULT_MAX_PENDING_TASKS

Method Summary

Modifier and Type	Method and Description
protected boolean	afterScheduledTaskSubmitted(long deadlineNanos)
protected boolean	beforeScheduledTaskSubmitted(long deadlineNanos)
protected void	cleanup()
void	closeFileDescriptors() This method is intended for use by process checkpoint/restore integration, such as OpenJDK CRaC.
int	getIoRatio() Returns the percentage of the desired amount of time spent for I/O in the event loop.
protected Queue<Runnable>	newTaskQueue(int maxPendingTasks)
void	openFileDescriptors() This method is intended for use by a process checkpoint/restore integration, such as OpenJDK CRaC.
int	registeredChannels()
Iterator<io.netty.channel.Channel>	registeredChannelsIterator()
protected void	run()
void	setIoRatio(int ioRatio) Sets the percentage of the desired amount of time spent for I/O in the event loop.
protected void	wakeup(boolean inEventLoop)

Methods inherited from class io.netty.channel.SingleThreadEventLoop

afterRunningAllTasks, executeAfterEventLoopIteration, hasTasks, next, parent, pendingTasks, register, register, register

Methods inherited from class io.netty.util.concurrent.SingleThreadEventExecutor

addShutdownHook, addTask, awaitTermination, confirmShutdown, deadlineNanos, delayNanos, execute, inEventLoop, interruptThread, invokeAll, invokeAll, invokeAny, invokeAny, isShutdown, isShuttingDown, isTerminated, lazyExecute, newTaskQueue, peekTask, pollTask, pollTaskFrom, reject, reject, removeShutdownHook, removeTask, runAllTasks, runAllTasks, runAllTasksFrom, runScheduledAndExecutorTasks, shutdown, shutdownGracefully, takeTask, terminationFuture, threadProperties, updateLastExecutionTime, wakesUpForTask

Methods inherited from class io.netty.util.concurrent.AbstractScheduledEventExecutor

cancelScheduledTasks, deadlineToDelayNanos, getCurrentTimeNanos, hasScheduledTasks, initialNanoTime, nanoTime, nextScheduledTaskDeadlineNanos, nextScheduledTaskNano, pollScheduledTask, pollScheduledTask, schedule, schedule, scheduleAtFixedRate, scheduleWithFixedDelay, validateScheduled

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

inEventLoop, iterator, newFailedFuture, newProgressivePromise, newPromise, newSucceededFuture, newTaskFor, newTaskFor, runTask, safeExecute, shutdownGracefully, shutdownNow, 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.netty.util.concurrent.EventExecutor

inEventLoop, inEventLoop, newFailedFuture, newProgressivePromise, newPromise, newSucceededFuture

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

isShuttingDown, iterator, schedule, schedule, scheduleAtFixedRate, scheduleWithFixedDelay, shutdown, shutdownGracefully, shutdownGracefully, shutdownNow, submit, submit, submit, terminationFuture

Methods inherited from interface java.util.concurrent.ExecutorService

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

Methods inherited from interface java.util.concurrent.Executor

execute

Methods inherited from interface java.lang.Iterable

forEach, spliterator

Method Detail

openFileDescriptors

@UnstableApi
public void openFileDescriptors()

This method is intended for use by a process checkpoint/restore integration, such as OpenJDK CRaC.

wakeup

protected void wakeup(boolean inEventLoop)

Overrides:

wakeup in class io.netty.util.concurrent.SingleThreadEventExecutor

beforeScheduledTaskSubmitted

protected boolean beforeScheduledTaskSubmitted(long deadlineNanos)

Overrides:

beforeScheduledTaskSubmitted in class io.netty.util.concurrent.AbstractScheduledEventExecutor

afterScheduledTaskSubmitted

protected boolean afterScheduledTaskSubmitted(long deadlineNanos)

Overrides:

afterScheduledTaskSubmitted in class io.netty.util.concurrent.AbstractScheduledEventExecutor

newTaskQueue

protected Queue<Runnable> newTaskQueue(int maxPendingTasks)

Overrides:

newTaskQueue in class io.netty.util.concurrent.SingleThreadEventExecutor

getIoRatio

public int getIoRatio()

Returns the percentage of the desired amount of time spent for I/O in the event loop.

setIoRatio

public void setIoRatio(int ioRatio)

Sets the percentage of the desired amount of time spent for I/O in the event loop. The default value is 50, which means the event loop will try to spend the same amount of time for I/O as for non-I/O tasks.

registeredChannels

public int registeredChannels()

Overrides:

registeredChannels in class io.netty.channel.SingleThreadEventLoop

registeredChannelsIterator

public Iterator<io.netty.channel.Channel> registeredChannelsIterator()

Overrides:

registeredChannelsIterator in class io.netty.channel.SingleThreadEventLoop

run

protected void run()

Specified by:

run in class io.netty.util.concurrent.SingleThreadEventExecutor

cleanup

protected void cleanup()

Overrides:

cleanup in class io.netty.util.concurrent.SingleThreadEventExecutor

closeFileDescriptors

@UnstableApi
public void closeFileDescriptors()

This method is intended for use by process checkpoint/restore integration, such as OpenJDK CRaC. It's up to the caller to ensure that there is no concurrent use of the FDs while these are closed, e.g. by blocking the executor.