c9aaa93d83
Motivation: Sometimes it is desirable to be able to use a different Queue implementation for the EventLoop of a Channel. This is currently not possible without resort to reflection. Modifications: - Add a new constructor to Nio|Epoll|KQueueEventLoopGroup which allows to specify a factory which is used to create the task queue. This was the user can override the default implementation. - Add test Result: Be able to change Queue that is used for the EventLoop.
140 lines
6.2 KiB
Java
140 lines
6.2 KiB
Java
/*
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* Copyright 2012 The Netty Project
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*
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* The Netty Project licenses this file to you under the Apache License,
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* version 2.0 (the "License"); you may not use this file except in compliance
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* with the License. You may obtain a copy of the License at:
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*/
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package io.netty.channel.nio;
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import io.netty.channel.Channel;
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import io.netty.channel.EventLoop;
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import io.netty.channel.DefaultSelectStrategyFactory;
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import io.netty.channel.MultithreadEventLoopGroup;
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import io.netty.channel.SelectStrategyFactory;
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import io.netty.util.concurrent.EventExecutor;
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import io.netty.util.concurrent.EventExecutorChooserFactory;
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import io.netty.util.concurrent.RejectedExecutionHandler;
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import io.netty.util.concurrent.RejectedExecutionHandlers;
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import java.nio.channels.Selector;
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import java.nio.channels.spi.SelectorProvider;
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import java.util.concurrent.Executor;
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import java.util.concurrent.ThreadFactory;
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/**
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* {@link MultithreadEventLoopGroup} implementations which is used for NIO {@link Selector} based {@link Channel}s.
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*/
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public class NioEventLoopGroup extends MultithreadEventLoopGroup {
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/**
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* Create a new instance using the default number of threads, the default {@link ThreadFactory} and
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* the {@link SelectorProvider} which is returned by {@link SelectorProvider#provider()}.
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*/
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public NioEventLoopGroup() {
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this(0);
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}
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/**
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* Create a new instance using the specified number of threads, {@link ThreadFactory} and the
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* {@link SelectorProvider} which is returned by {@link SelectorProvider#provider()}.
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*/
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public NioEventLoopGroup(int nThreads) {
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this(nThreads, (Executor) null);
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}
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/**
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* Create a new instance using the specified number of threads, the given {@link ThreadFactory} and the
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* {@link SelectorProvider} which is returned by {@link SelectorProvider#provider()}.
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*/
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public NioEventLoopGroup(int nThreads, ThreadFactory threadFactory) {
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this(nThreads, threadFactory, SelectorProvider.provider());
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}
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public NioEventLoopGroup(int nThreads, Executor executor) {
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this(nThreads, executor, SelectorProvider.provider());
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}
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/**
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* Create a new instance using the specified number of threads, the given {@link ThreadFactory} and the given
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* {@link SelectorProvider}.
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*/
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public NioEventLoopGroup(
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int nThreads, ThreadFactory threadFactory, final SelectorProvider selectorProvider) {
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this(nThreads, threadFactory, selectorProvider, DefaultSelectStrategyFactory.INSTANCE);
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}
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public NioEventLoopGroup(int nThreads, ThreadFactory threadFactory,
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final SelectorProvider selectorProvider, final SelectStrategyFactory selectStrategyFactory) {
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super(nThreads, threadFactory, selectorProvider, selectStrategyFactory, RejectedExecutionHandlers.reject());
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}
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public NioEventLoopGroup(
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int nThreads, Executor executor, final SelectorProvider selectorProvider) {
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this(nThreads, executor, selectorProvider, DefaultSelectStrategyFactory.INSTANCE);
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}
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public NioEventLoopGroup(int nThreads, Executor executor, final SelectorProvider selectorProvider,
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final SelectStrategyFactory selectStrategyFactory) {
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super(nThreads, executor, selectorProvider, selectStrategyFactory, RejectedExecutionHandlers.reject());
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}
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public NioEventLoopGroup(int nThreads, Executor executor, EventExecutorChooserFactory chooserFactory,
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final SelectorProvider selectorProvider,
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final SelectStrategyFactory selectStrategyFactory) {
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super(nThreads, executor, chooserFactory, selectorProvider, selectStrategyFactory,
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RejectedExecutionHandlers.reject());
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}
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public NioEventLoopGroup(int nThreads, Executor executor, EventExecutorChooserFactory chooserFactory,
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final SelectorProvider selectorProvider,
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final SelectStrategyFactory selectStrategyFactory,
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final RejectedExecutionHandler rejectedExecutionHandler) {
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super(nThreads, executor, chooserFactory, selectorProvider, selectStrategyFactory, rejectedExecutionHandler);
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}
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public NioEventLoopGroup(int nThreads, Executor executor, EventExecutorChooserFactory chooserFactory,
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final SelectorProvider selectorProvider,
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final SelectStrategyFactory selectStrategyFactory,
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final RejectedExecutionHandler rejectedExecutionHandler,
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final EventLoopTaskQueueFactory taskQueueFactory) {
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super(nThreads, executor, chooserFactory, selectorProvider, selectStrategyFactory,
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rejectedExecutionHandler, taskQueueFactory);
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}
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/**
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* Sets the percentage of the desired amount of time spent for I/O in the child event loops. The default value is
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* {@code 50}, which means the event loop will try to spend the same amount of time for I/O as for non-I/O tasks.
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*/
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public void setIoRatio(int ioRatio) {
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for (EventExecutor e: this) {
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((NioEventLoop) e).setIoRatio(ioRatio);
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}
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}
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/**
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* Replaces the current {@link Selector}s of the child event loops with newly created {@link Selector}s to work
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* around the infamous epoll 100% CPU bug.
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*/
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public void rebuildSelectors() {
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for (EventExecutor e: this) {
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((NioEventLoop) e).rebuildSelector();
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}
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}
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@Override
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protected EventLoop newChild(Executor executor, Object... args) throws Exception {
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EventLoopTaskQueueFactory queueFactory = args.length == 4 ? (EventLoopTaskQueueFactory) args[3] : null;
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return new NioEventLoop(this, executor, (SelectorProvider) args[0],
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((SelectStrategyFactory) args[1]).newSelectStrategy(), (RejectedExecutionHandler) args[2], queueFactory);
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}
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}
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