190 lines
8.5 KiB
Java
190 lines
8.5 KiB
Java
/*
|
|
* Copyright 2014 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.epoll;
|
|
|
|
import io.netty.channel.DefaultSelectStrategyFactory;
|
|
import io.netty.channel.EventLoop;
|
|
import io.netty.channel.EventLoopGroup;
|
|
import io.netty.channel.EventLoopTaskQueueFactory;
|
|
import io.netty.channel.MultithreadEventLoopGroup;
|
|
import io.netty.channel.SelectStrategyFactory;
|
|
import io.netty.channel.SingleThreadEventLoop;
|
|
import io.netty.util.concurrent.EventExecutorChooserFactory;
|
|
import io.netty.util.concurrent.RejectedExecutionHandler;
|
|
import io.netty.util.concurrent.RejectedExecutionHandlers;
|
|
|
|
import java.util.concurrent.Executor;
|
|
import java.util.concurrent.ThreadFactory;
|
|
|
|
/**
|
|
* {@link EventLoopGroup} which uses epoll under the covers. Because of this
|
|
* it only works on linux.
|
|
*/
|
|
public final class EpollEventLoopGroup extends MultithreadEventLoopGroup {
|
|
{
|
|
// Ensure JNI is initialized by the time this class is loaded.
|
|
Epoll.ensureAvailability();
|
|
}
|
|
|
|
/**
|
|
* Create a new instance using the default number of threads and the default {@link ThreadFactory}.
|
|
*/
|
|
public EpollEventLoopGroup() {
|
|
this(0);
|
|
}
|
|
|
|
/**
|
|
* Create a new instance using the specified number of threads and the default {@link ThreadFactory}.
|
|
*/
|
|
public EpollEventLoopGroup(int nThreads) {
|
|
this(nThreads, (ThreadFactory) null);
|
|
}
|
|
|
|
/**
|
|
* Create a new instance using the default number of threads and the given {@link ThreadFactory}.
|
|
*/
|
|
@SuppressWarnings("deprecation")
|
|
public EpollEventLoopGroup(ThreadFactory threadFactory) {
|
|
this(0, threadFactory, 0);
|
|
}
|
|
|
|
/**
|
|
* Create a new instance using the specified number of threads and the default {@link ThreadFactory}.
|
|
*/
|
|
@SuppressWarnings("deprecation")
|
|
public EpollEventLoopGroup(int nThreads, SelectStrategyFactory selectStrategyFactory) {
|
|
this(nThreads, (ThreadFactory) null, selectStrategyFactory);
|
|
}
|
|
|
|
/**
|
|
* Create a new instance using the specified number of threads and the given {@link ThreadFactory}.
|
|
*/
|
|
@SuppressWarnings("deprecation")
|
|
public EpollEventLoopGroup(int nThreads, ThreadFactory threadFactory) {
|
|
this(nThreads, threadFactory, 0);
|
|
}
|
|
|
|
public EpollEventLoopGroup(int nThreads, Executor executor) {
|
|
this(nThreads, executor, DefaultSelectStrategyFactory.INSTANCE);
|
|
}
|
|
|
|
/**
|
|
* Create a new instance using the specified number of threads and the given {@link ThreadFactory}.
|
|
*/
|
|
@SuppressWarnings("deprecation")
|
|
public EpollEventLoopGroup(int nThreads, ThreadFactory threadFactory, SelectStrategyFactory selectStrategyFactory) {
|
|
this(nThreads, threadFactory, 0, selectStrategyFactory);
|
|
}
|
|
|
|
/**
|
|
* Create a new instance using the specified number of threads, the given {@link ThreadFactory} and the given
|
|
* maximal amount of epoll events to handle per epollWait(...).
|
|
*
|
|
* @deprecated Use {@link #EpollEventLoopGroup(int)} or {@link #EpollEventLoopGroup(int, ThreadFactory)}
|
|
*/
|
|
@Deprecated
|
|
public EpollEventLoopGroup(int nThreads, ThreadFactory threadFactory, int maxEventsAtOnce) {
|
|
this(nThreads, threadFactory, maxEventsAtOnce, DefaultSelectStrategyFactory.INSTANCE);
|
|
}
|
|
|
|
/**
|
|
* Create a new instance using the specified number of threads, the given {@link ThreadFactory} and the given
|
|
* maximal amount of epoll events to handle per epollWait(...).
|
|
*
|
|
* @deprecated Use {@link #EpollEventLoopGroup(int)}, {@link #EpollEventLoopGroup(int, ThreadFactory)}, or
|
|
* {@link #EpollEventLoopGroup(int, SelectStrategyFactory)}
|
|
*/
|
|
@Deprecated
|
|
public EpollEventLoopGroup(int nThreads, ThreadFactory threadFactory, int maxEventsAtOnce,
|
|
SelectStrategyFactory selectStrategyFactory) {
|
|
super(nThreads, threadFactory, maxEventsAtOnce, selectStrategyFactory, RejectedExecutionHandlers.reject());
|
|
}
|
|
|
|
public EpollEventLoopGroup(int nThreads, Executor executor, SelectStrategyFactory selectStrategyFactory) {
|
|
super(nThreads, executor, 0, selectStrategyFactory, RejectedExecutionHandlers.reject());
|
|
}
|
|
|
|
public EpollEventLoopGroup(int nThreads, Executor executor, EventExecutorChooserFactory chooserFactory,
|
|
SelectStrategyFactory selectStrategyFactory) {
|
|
super(nThreads, executor, chooserFactory, 0, selectStrategyFactory, RejectedExecutionHandlers.reject());
|
|
}
|
|
|
|
public EpollEventLoopGroup(int nThreads, Executor executor, EventExecutorChooserFactory chooserFactory,
|
|
SelectStrategyFactory selectStrategyFactory,
|
|
RejectedExecutionHandler rejectedExecutionHandler) {
|
|
super(nThreads, executor, chooserFactory, 0, selectStrategyFactory, rejectedExecutionHandler);
|
|
}
|
|
|
|
public EpollEventLoopGroup(int nThreads, Executor executor, EventExecutorChooserFactory chooserFactory,
|
|
SelectStrategyFactory selectStrategyFactory,
|
|
RejectedExecutionHandler rejectedExecutionHandler,
|
|
EventLoopTaskQueueFactory queueFactory) {
|
|
super(nThreads, executor, chooserFactory, 0, selectStrategyFactory, rejectedExecutionHandler, queueFactory);
|
|
}
|
|
|
|
/**
|
|
* @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 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 EpollEventLoopGroup(int nThreads, Executor executor, EventExecutorChooserFactory chooserFactory,
|
|
SelectStrategyFactory selectStrategyFactory,
|
|
RejectedExecutionHandler rejectedExecutionHandler,
|
|
EventLoopTaskQueueFactory taskQueueFactory,
|
|
EventLoopTaskQueueFactory tailTaskQueueFactory) {
|
|
super(nThreads, executor, chooserFactory, 0, selectStrategyFactory, rejectedExecutionHandler, taskQueueFactory,
|
|
tailTaskQueueFactory);
|
|
}
|
|
|
|
/**
|
|
* @deprecated This method will be removed in future releases, and is not guaranteed to have any impacts.
|
|
*/
|
|
@Deprecated
|
|
public void setIoRatio(int ioRatio) {
|
|
if (ioRatio <= 0 || ioRatio > 100) {
|
|
throw new IllegalArgumentException("ioRatio: " + ioRatio + " (expected: 0 < ioRatio <= 100)");
|
|
}
|
|
}
|
|
|
|
@Override
|
|
protected EventLoop newChild(Executor executor, Object... args) throws Exception {
|
|
Integer maxEvents = (Integer) args[0];
|
|
SelectStrategyFactory selectStrategyFactory = (SelectStrategyFactory) args[1];
|
|
RejectedExecutionHandler rejectedExecutionHandler = (RejectedExecutionHandler) args[2];
|
|
EventLoopTaskQueueFactory taskQueueFactory = null;
|
|
EventLoopTaskQueueFactory tailTaskQueueFactory = null;
|
|
|
|
int argsLength = args.length;
|
|
if (argsLength > 3) {
|
|
taskQueueFactory = (EventLoopTaskQueueFactory) args[3];
|
|
}
|
|
if (argsLength > 4) {
|
|
tailTaskQueueFactory = (EventLoopTaskQueueFactory) args[4];
|
|
}
|
|
return new EpollEventLoop(this, executor, maxEvents,
|
|
selectStrategyFactory.newSelectStrategy(),
|
|
rejectedExecutionHandler, taskQueueFactory, tailTaskQueueFactory);
|
|
}
|
|
}
|