101 lines
3.6 KiB
Java
101 lines
3.6 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;
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import io.netty.util.NettyRuntime;
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import io.netty.util.concurrent.DefaultThreadFactory;
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import io.netty.util.concurrent.EventExecutorChooserFactory;
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import io.netty.util.concurrent.MultithreadEventExecutorGroup;
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import io.netty.util.internal.SystemPropertyUtil;
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import io.netty.util.internal.logging.InternalLogger;
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import io.netty.util.internal.logging.InternalLoggerFactory;
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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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* Abstract base class for {@link EventLoopGroup} implementations that handles their tasks with multiple threads at
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* the same time.
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*/
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public abstract class MultithreadEventLoopGroup extends MultithreadEventExecutorGroup implements EventLoopGroup {
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private static final InternalLogger logger = InternalLoggerFactory.getInstance(MultithreadEventLoopGroup.class);
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private static final int DEFAULT_EVENT_LOOP_THREADS;
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static {
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DEFAULT_EVENT_LOOP_THREADS = Math.max(1, SystemPropertyUtil.getInt(
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"io.netty.eventLoopThreads", NettyRuntime.availableProcessors() * 2));
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if (logger.isDebugEnabled()) {
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logger.debug("-Dio.netty.eventLoopThreads: {}", DEFAULT_EVENT_LOOP_THREADS);
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}
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}
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/**
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* @see MultithreadEventExecutorGroup#MultithreadEventExecutorGroup(int, Executor, Object...)
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*/
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protected MultithreadEventLoopGroup(int nThreads, Executor executor, Object... args) {
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super(nThreads == 0 ? DEFAULT_EVENT_LOOP_THREADS : nThreads, executor, args);
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}
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/**
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* @see MultithreadEventExecutorGroup#MultithreadEventExecutorGroup(int, ThreadFactory, Object...)
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*/
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protected MultithreadEventLoopGroup(int nThreads, ThreadFactory threadFactory, Object... args) {
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super(nThreads == 0 ? DEFAULT_EVENT_LOOP_THREADS : nThreads, threadFactory, args);
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}
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/**
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* @see MultithreadEventExecutorGroup#MultithreadEventExecutorGroup(int, Executor,
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* EventExecutorChooserFactory, Object...)
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*/
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protected MultithreadEventLoopGroup(int nThreads, Executor executor, EventExecutorChooserFactory chooserFactory,
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Object... args) {
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super(nThreads == 0 ? DEFAULT_EVENT_LOOP_THREADS : nThreads, executor, chooserFactory, args);
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}
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@Override
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protected ThreadFactory newDefaultThreadFactory() {
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return new DefaultThreadFactory(getClass(), Thread.MAX_PRIORITY);
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}
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@Override
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public EventLoop next() {
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return (EventLoop) super.next();
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}
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@Override
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protected abstract EventLoop newChild(Executor executor, Object... args) throws Exception;
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@Override
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public ChannelFuture register(Channel channel) {
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return next().register(channel);
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}
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@Override
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public ChannelFuture register(ChannelPromise promise) {
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return next().register(promise);
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}
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@Deprecated
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@Override
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public ChannelFuture register(Channel channel, ChannelPromise promise) {
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return next().register(channel, promise);
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}
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}
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