io.netty.channel.epoll.EpollChannelConfig Maven / Gradle / Ivy
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This artifact provides a single jar that contains all classes required to use remote EJB and JMS, including
all dependencies. It is intended for use by those not using maven, maven users should just import the EJB and
JMS BOM's instead (shaded JAR's cause lots of problems with maven, as it is very easy to inadvertently end up
with different versions on classes on the class path).
/*
* Copyright 2015 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.buffer.ByteBufAllocator;
import io.netty.channel.Channel;
import io.netty.channel.ChannelException;
import io.netty.channel.ChannelOption;
import io.netty.channel.DefaultChannelConfig;
import io.netty.channel.MessageSizeEstimator;
import io.netty.channel.RecvByteBufAllocator;
import io.netty.channel.WriteBufferWaterMark;
import io.netty.channel.unix.IntegerUnixChannelOption;
import io.netty.channel.unix.RawUnixChannelOption;
import io.netty.util.internal.ObjectUtil;
import java.io.IOException;
import java.nio.ByteBuffer;
import java.util.Map;
import static io.netty.channel.unix.Limits.SSIZE_MAX;
public class EpollChannelConfig extends DefaultChannelConfig {
private volatile long maxBytesPerGatheringWrite = SSIZE_MAX;
protected EpollChannelConfig(Channel channel) {
super(checkAbstractEpollChannel(channel));
}
protected EpollChannelConfig(Channel channel, RecvByteBufAllocator recvByteBufAllocator) {
super(checkAbstractEpollChannel(channel), recvByteBufAllocator);
}
protected LinuxSocket socket() {
return ((AbstractEpollChannel) channel).socket;
}
private static Channel checkAbstractEpollChannel(Channel channel) {
if (!(channel instanceof AbstractEpollChannel)) {
throw new IllegalArgumentException("channel is not AbstractEpollChannel: " + channel.getClass());
}
return channel;
}
@Override
public Map, Object> getOptions() {
return getOptions(super.getOptions(), EpollChannelOption.EPOLL_MODE);
}
@SuppressWarnings("unchecked")
@Override
public T getOption(ChannelOption option) {
if (option == EpollChannelOption.EPOLL_MODE) {
return (T) getEpollMode();
}
try {
if (option instanceof IntegerUnixChannelOption) {
IntegerUnixChannelOption opt = (IntegerUnixChannelOption) option;
return (T) Integer.valueOf(((AbstractEpollChannel) channel).socket.getIntOpt(
opt.level(), opt.optname()));
}
if (option instanceof RawUnixChannelOption) {
RawUnixChannelOption opt = (RawUnixChannelOption) option;
ByteBuffer out = ByteBuffer.allocate(opt.length());
((AbstractEpollChannel) channel).socket.getRawOpt(opt.level(), opt.optname(), out);
return (T) out.flip();
}
} catch (IOException e) {
throw new ChannelException(e);
}
return super.getOption(option);
}
@Override
public boolean setOption(ChannelOption option, T value) {
validate(option, value);
if (option == EpollChannelOption.EPOLL_MODE) {
setEpollMode((EpollMode) value);
} else {
try {
if (option instanceof IntegerUnixChannelOption) {
IntegerUnixChannelOption opt = (IntegerUnixChannelOption) option;
((AbstractEpollChannel) channel).socket.setIntOpt(opt.level(), opt.optname(), (Integer) value);
return true;
} else if (option instanceof RawUnixChannelOption) {
RawUnixChannelOption opt = (RawUnixChannelOption) option;
((AbstractEpollChannel) channel).socket.setRawOpt(opt.level(), opt.optname(), (ByteBuffer) value);
return true;
}
} catch (IOException e) {
throw new ChannelException(e);
}
return super.setOption(option, value);
}
return true;
}
@Override
public EpollChannelConfig setConnectTimeoutMillis(int connectTimeoutMillis) {
super.setConnectTimeoutMillis(connectTimeoutMillis);
return this;
}
@Override
@Deprecated
public EpollChannelConfig setMaxMessagesPerRead(int maxMessagesPerRead) {
super.setMaxMessagesPerRead(maxMessagesPerRead);
return this;
}
@Override
public EpollChannelConfig setWriteSpinCount(int writeSpinCount) {
super.setWriteSpinCount(writeSpinCount);
return this;
}
@Override
public EpollChannelConfig setAllocator(ByteBufAllocator allocator) {
super.setAllocator(allocator);
return this;
}
@Override
public EpollChannelConfig setRecvByteBufAllocator(RecvByteBufAllocator allocator) {
if (!(allocator.newHandle() instanceof RecvByteBufAllocator.ExtendedHandle)) {
throw new IllegalArgumentException("allocator.newHandle() must return an object of type: " +
RecvByteBufAllocator.ExtendedHandle.class);
}
super.setRecvByteBufAllocator(allocator);
return this;
}
@Override
public EpollChannelConfig setAutoRead(boolean autoRead) {
super.setAutoRead(autoRead);
return this;
}
@Override
@Deprecated
public EpollChannelConfig setWriteBufferHighWaterMark(int writeBufferHighWaterMark) {
super.setWriteBufferHighWaterMark(writeBufferHighWaterMark);
return this;
}
@Override
@Deprecated
public EpollChannelConfig setWriteBufferLowWaterMark(int writeBufferLowWaterMark) {
super.setWriteBufferLowWaterMark(writeBufferLowWaterMark);
return this;
}
@Override
public EpollChannelConfig setWriteBufferWaterMark(WriteBufferWaterMark writeBufferWaterMark) {
super.setWriteBufferWaterMark(writeBufferWaterMark);
return this;
}
@Override
public EpollChannelConfig setMessageSizeEstimator(MessageSizeEstimator estimator) {
super.setMessageSizeEstimator(estimator);
return this;
}
/**
* Return the {@link EpollMode} used. Default is
* {@link EpollMode#EDGE_TRIGGERED}. If you want to use {@link #isAutoRead()} {@code false} or
* {@link #getMaxMessagesPerRead()} and have an accurate behaviour you should use
* {@link EpollMode#LEVEL_TRIGGERED}.
*/
public EpollMode getEpollMode() {
return ((AbstractEpollChannel) channel).isFlagSet(Native.EPOLLET)
? EpollMode.EDGE_TRIGGERED : EpollMode.LEVEL_TRIGGERED;
}
/**
* Set the {@link EpollMode} used. Default is
* {@link EpollMode#EDGE_TRIGGERED}. If you want to use {@link #isAutoRead()} {@code false} or
* {@link #getMaxMessagesPerRead()} and have an accurate behaviour you should use
* {@link EpollMode#LEVEL_TRIGGERED}.
*
* Be aware this config setting can only be adjusted before the channel was registered.
*/
public EpollChannelConfig setEpollMode(EpollMode mode) {
ObjectUtil.checkNotNull(mode, "mode");
try {
switch (mode) {
case EDGE_TRIGGERED:
checkChannelNotRegistered();
((AbstractEpollChannel) channel).setFlag(Native.EPOLLET);
break;
case LEVEL_TRIGGERED:
checkChannelNotRegistered();
((AbstractEpollChannel) channel).clearFlag(Native.EPOLLET);
break;
default:
throw new Error();
}
} catch (IOException e) {
throw new ChannelException(e);
}
return this;
}
private void checkChannelNotRegistered() {
if (channel.isRegistered()) {
throw new IllegalStateException("EpollMode can only be changed before channel is registered");
}
}
@Override
protected final void autoReadCleared() {
((AbstractEpollChannel) channel).clearEpollIn();
}
protected final void setMaxBytesPerGatheringWrite(long maxBytesPerGatheringWrite) {
this.maxBytesPerGatheringWrite = maxBytesPerGatheringWrite;
}
protected final long getMaxBytesPerGatheringWrite() {
return maxBytesPerGatheringWrite;
}
}