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/*
* Copyright 2012 The Netty Project
*
* The Netty Project licenses this file to you under the Apache License,
* version 2.0 (the "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at:
*
* https://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*/
package io.netty.channel.nio;
import io.netty.channel.Channel;
import io.netty.channel.DefaultSelectStrategyFactory;
import io.netty.channel.EventLoopTaskQueueFactory;
import io.netty.channel.IoEventLoop;
import io.netty.channel.IoEventLoopGroup;
import io.netty.channel.IoHandler;
import io.netty.channel.MultiThreadIoEventLoopGroup;
import io.netty.channel.SelectStrategyFactory;
import io.netty.channel.SingleThreadEventLoop;
import io.netty.util.concurrent.EventExecutor;
import io.netty.util.concurrent.EventExecutorChooserFactory;
import io.netty.util.concurrent.RejectedExecutionHandler;
import io.netty.util.concurrent.RejectedExecutionHandlers;
import io.netty.util.internal.logging.InternalLogger;
import io.netty.util.internal.logging.InternalLoggerFactory;
import java.nio.channels.Selector;
import java.nio.channels.spi.SelectorProvider;
import java.util.concurrent.Executor;
import java.util.concurrent.ThreadFactory;
/**
* {@link MultiThreadIoEventLoopGroup} implementation which is used for NIO {@link Selector} based {@link Channel}s.
*
* @deprecated Use {@link MultiThreadIoEventLoopGroup} with {@link io.netty.channel.nio.NioIoHandler}.
*/
@Deprecated
public class NioEventLoopGroup extends MultiThreadIoEventLoopGroup implements IoEventLoopGroup {
private static final InternalLogger LOGGER = InternalLoggerFactory.getInstance(NioEventLoopGroup.class);
/**
* Create a new instance using the default number of threads, the default {@link ThreadFactory} and
* the {@link SelectorProvider} which is returned by {@link SelectorProvider#provider()}.
*/
public NioEventLoopGroup() {
this(0);
}
/**
* Create a new instance using the specified number of threads, {@link ThreadFactory} and the
* {@link SelectorProvider} which is returned by {@link SelectorProvider#provider()}.
*/
public NioEventLoopGroup(int nThreads) {
this(nThreads, (Executor) null);
}
/**
* Create a new instance using the default number of threads, the given {@link ThreadFactory} and the
* {@link SelectorProvider} which is returned by {@link SelectorProvider#provider()}.
*/
public NioEventLoopGroup(ThreadFactory threadFactory) {
this(0, threadFactory, SelectorProvider.provider());
}
/**
* Create a new instance using the specified number of threads, the given {@link ThreadFactory} and the
* {@link SelectorProvider} which is returned by {@link SelectorProvider#provider()}.
*/
public NioEventLoopGroup(int nThreads, ThreadFactory threadFactory) {
this(nThreads, threadFactory, SelectorProvider.provider());
}
public NioEventLoopGroup(int nThreads, Executor executor) {
this(nThreads, executor, SelectorProvider.provider());
}
/**
* Create a new instance using the specified number of threads, the given {@link ThreadFactory} and the given
* {@link SelectorProvider}.
*/
public NioEventLoopGroup(
int nThreads, ThreadFactory threadFactory, final SelectorProvider selectorProvider) {
this(nThreads, threadFactory, selectorProvider, DefaultSelectStrategyFactory.INSTANCE);
}
public NioEventLoopGroup(int nThreads, ThreadFactory threadFactory,
final SelectorProvider selectorProvider, final SelectStrategyFactory selectStrategyFactory) {
super(nThreads, threadFactory, NioIoHandler.newFactory(selectorProvider, selectStrategyFactory),
RejectedExecutionHandlers.reject());
}
public NioEventLoopGroup(
int nThreads, Executor executor, final SelectorProvider selectorProvider) {
this(nThreads, executor, selectorProvider, DefaultSelectStrategyFactory.INSTANCE);
}
public NioEventLoopGroup(int nThreads, Executor executor, final SelectorProvider selectorProvider,
final SelectStrategyFactory selectStrategyFactory) {
super(nThreads, executor, NioIoHandler.newFactory(selectorProvider, selectStrategyFactory),
RejectedExecutionHandlers.reject());
}
public NioEventLoopGroup(int nThreads, Executor executor, EventExecutorChooserFactory chooserFactory,
final SelectorProvider selectorProvider,
final SelectStrategyFactory selectStrategyFactory) {
super(nThreads, executor, NioIoHandler.newFactory(selectorProvider, selectStrategyFactory), chooserFactory,
RejectedExecutionHandlers.reject());
}
public NioEventLoopGroup(int nThreads, Executor executor, EventExecutorChooserFactory chooserFactory,
final SelectorProvider selectorProvider,
final SelectStrategyFactory selectStrategyFactory,
final RejectedExecutionHandler rejectedExecutionHandler) {
super(nThreads, executor, NioIoHandler.newFactory(selectorProvider, selectStrategyFactory), chooserFactory,
rejectedExecutionHandler);
}
public NioEventLoopGroup(int nThreads, Executor executor, EventExecutorChooserFactory chooserFactory,
final SelectorProvider selectorProvider,
final SelectStrategyFactory selectStrategyFactory,
final RejectedExecutionHandler rejectedExecutionHandler,
final EventLoopTaskQueueFactory taskQueueFactory) {
super(nThreads, executor, NioIoHandler.newFactory(selectorProvider, selectStrategyFactory), chooserFactory,
rejectedExecutionHandler, taskQueueFactory);
}
/**
* @param nThreads the number of threads that will be used by this instance.
* @param executor the Executor to use, or {@code null} if default one should be used.
* @param chooserFactory the {@link EventExecutorChooserFactory} to use.
* @param selectorProvider the {@link SelectorProvider} to use.
* @param selectStrategyFactory the {@link SelectStrategyFactory} to use.
* @param rejectedExecutionHandler the {@link RejectedExecutionHandler} to use.
* @param taskQueueFactory the {@link EventLoopTaskQueueFactory} to use for
* {@link SingleThreadEventLoop#execute(Runnable)},
* or {@code null} if default one should be used.
* @param tailTaskQueueFactory the {@link EventLoopTaskQueueFactory} to use for
* {@link SingleThreadEventLoop#executeAfterEventLoopIteration(Runnable)},
* or {@code null} if default one should be used.
*/
public NioEventLoopGroup(int nThreads, Executor executor, EventExecutorChooserFactory chooserFactory,
SelectorProvider selectorProvider,
SelectStrategyFactory selectStrategyFactory,
RejectedExecutionHandler rejectedExecutionHandler,
EventLoopTaskQueueFactory taskQueueFactory,
EventLoopTaskQueueFactory tailTaskQueueFactory) {
super(nThreads, executor, NioIoHandler.newFactory(selectorProvider, selectStrategyFactory), chooserFactory,
rejectedExecutionHandler, taskQueueFactory, tailTaskQueueFactory);
}
/**
* This method is a no-op.
*
* @deprecated
*/
@Deprecated
public void setIoRatio(int ioRatio) {
LOGGER.debug("NioEventLoopGroup.setIoRatio(int) logic was removed, this is a no-op");
}
/**
* Replaces the current {@link Selector}s of the child event loops with newly created {@link Selector}s to work
* around the infamous epoll 100% CPU bug.
*/
public void rebuildSelectors() {
for (EventExecutor e: this) {
((NioEventLoop) e).rebuildSelector();
}
}
@Override
protected IoEventLoop newChild(Executor executor, IoHandler ioHandler, Object... args) {
RejectedExecutionHandler rejectedExecutionHandler = (RejectedExecutionHandler) args[0];
EventLoopTaskQueueFactory taskQueueFactory = null;
EventLoopTaskQueueFactory tailTaskQueueFactory = null;
int argsLength = args.length;
if (argsLength > 1) {
taskQueueFactory = (EventLoopTaskQueueFactory) args[1];
}
if (argsLength > 2) {
tailTaskQueueFactory = (EventLoopTaskQueueFactory) args[2];
}
return new NioEventLoop(
this, executor, ioHandler, taskQueueFactory, tailTaskQueueFactory, rejectedExecutionHandler);
}
}
