1003 lines
31 KiB
Java
1003 lines
31 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.buffer.ByteBufAllocator;
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import io.netty.util.Attribute;
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import io.netty.util.AttributeKey;
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import io.netty.util.Recycler;
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import io.netty.util.ReferenceCountUtil;
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import io.netty.util.ResourceLeakHint;
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import io.netty.util.concurrent.EventExecutor;
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import io.netty.util.concurrent.EventExecutorGroup;
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import io.netty.util.internal.OneTimeTask;
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import io.netty.util.internal.StringUtil;
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import java.net.SocketAddress;
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import static io.netty.channel.DefaultChannelPipeline.*;
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final class DefaultChannelHandlerContext implements ChannelHandlerContext, ResourceLeakHint {
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volatile DefaultChannelHandlerContext next;
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volatile DefaultChannelHandlerContext prev;
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private final boolean inbound;
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private final boolean outbound;
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private final AbstractChannel channel;
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private final DefaultChannelPipeline pipeline;
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private final String name;
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private final ChannelHandler handler;
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private boolean removed;
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// Will be set to null if no child executor should be used, otherwise it will be set to the
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// child executor.
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final EventExecutor executor;
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private ChannelFuture succeededFuture;
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// Lazily instantiated tasks used to trigger events to a handler with different executor.
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// These needs to be volatile as otherwise an other Thread may see an half initialized instance.
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// See the JMM for more details
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private volatile Runnable invokeChannelReadCompleteTask;
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private volatile Runnable invokeReadTask;
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private volatile Runnable invokeChannelWritableStateChangedTask;
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private volatile Runnable invokeFlushTask;
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DefaultChannelHandlerContext(DefaultChannelPipeline pipeline, EventExecutorGroup group, String name,
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ChannelHandler handler) {
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if (name == null) {
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throw new NullPointerException("name");
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}
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if (handler == null) {
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throw new NullPointerException("handler");
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}
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channel = pipeline.channel;
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this.pipeline = pipeline;
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this.name = name;
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this.handler = handler;
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if (group != null) {
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// Pin one of the child executors once and remember it so that the same child executor
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// is used to fire events for the same channel.
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EventExecutor childExecutor = pipeline.childExecutors.get(group);
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if (childExecutor == null) {
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childExecutor = group.next();
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pipeline.childExecutors.put(group, childExecutor);
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}
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executor = childExecutor;
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} else {
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executor = null;
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}
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inbound = handler instanceof ChannelInboundHandler;
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outbound = handler instanceof ChannelOutboundHandler;
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}
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/** Invocation initiated by {@link DefaultChannelPipeline#teardownAll()}}. */
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void teardown() {
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EventExecutor executor = executor();
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if (executor.inEventLoop()) {
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teardown0();
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} else {
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executor.execute(new Runnable() {
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@Override
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public void run() {
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teardown0();
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}
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});
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}
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}
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private void teardown0() {
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DefaultChannelHandlerContext prev = this.prev;
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if (prev != null) {
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synchronized (pipeline) {
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pipeline.remove0(this);
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}
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prev.teardown();
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}
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}
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@Override
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public Channel channel() {
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return channel;
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}
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@Override
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public ChannelPipeline pipeline() {
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return pipeline;
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}
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@Override
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public ByteBufAllocator alloc() {
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return channel().config().getAllocator();
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}
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@Override
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public EventExecutor executor() {
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if (executor == null) {
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return channel().eventLoop();
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} else {
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return executor;
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}
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}
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@Override
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public ChannelHandler handler() {
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return handler;
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}
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@Override
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public String name() {
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return name;
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}
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@Override
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public <T> Attribute<T> attr(AttributeKey<T> key) {
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return channel.attr(key);
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}
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@Override
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public ChannelHandlerContext fireChannelRegistered() {
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final DefaultChannelHandlerContext next = findContextInbound();
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EventExecutor executor = next.executor();
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if (executor.inEventLoop()) {
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next.invokeChannelRegistered();
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} else {
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executor.execute(new OneTimeTask() {
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@Override
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public void run() {
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next.invokeChannelRegistered();
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}
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});
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}
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return this;
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}
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private void invokeChannelRegistered() {
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try {
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((ChannelInboundHandler) handler).channelRegistered(this);
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} catch (Throwable t) {
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notifyHandlerException(t);
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}
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}
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@Override
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public ChannelHandlerContext fireChannelUnregistered() {
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final DefaultChannelHandlerContext next = findContextInbound();
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EventExecutor executor = next.executor();
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if (executor.inEventLoop()) {
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next.invokeChannelUnregistered();
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} else {
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executor.execute(new OneTimeTask() {
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@Override
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public void run() {
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next.invokeChannelUnregistered();
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}
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});
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}
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return this;
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}
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@SuppressWarnings("deprecation")
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private void invokeChannelUnregistered() {
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try {
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((ChannelInboundHandler) handler).channelUnregistered(this);
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} catch (Throwable t) {
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notifyHandlerException(t);
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}
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}
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@Override
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public ChannelHandlerContext fireChannelActive() {
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final DefaultChannelHandlerContext next = findContextInbound();
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EventExecutor executor = next.executor();
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if (executor.inEventLoop()) {
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next.invokeChannelActive();
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} else {
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executor.execute(new OneTimeTask() {
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@Override
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public void run() {
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next.invokeChannelActive();
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}
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});
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}
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return this;
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}
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private void invokeChannelActive() {
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try {
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((ChannelInboundHandler) handler).channelActive(this);
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} catch (Throwable t) {
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notifyHandlerException(t);
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}
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}
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@Override
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public ChannelHandlerContext fireChannelInactive() {
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final DefaultChannelHandlerContext next = findContextInbound();
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EventExecutor executor = next.executor();
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if (executor.inEventLoop()) {
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next.invokeChannelInactive();
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} else {
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executor.execute(new OneTimeTask() {
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@Override
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public void run() {
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next.invokeChannelInactive();
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}
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});
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}
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return this;
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}
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private void invokeChannelInactive() {
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try {
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((ChannelInboundHandler) handler).channelInactive(this);
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} catch (Throwable t) {
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notifyHandlerException(t);
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}
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}
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@Override
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public ChannelHandlerContext fireExceptionCaught(final Throwable cause) {
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if (cause == null) {
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throw new NullPointerException("cause");
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}
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final DefaultChannelHandlerContext next = this.next;
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EventExecutor executor = next.executor();
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if (executor.inEventLoop()) {
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next.invokeExceptionCaught(cause);
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} else {
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try {
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executor.execute(new OneTimeTask() {
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@Override
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public void run() {
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next.invokeExceptionCaught(cause);
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}
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});
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} catch (Throwable t) {
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if (logger.isWarnEnabled()) {
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logger.warn("Failed to submit an exceptionCaught() event.", t);
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logger.warn("The exceptionCaught() event that was failed to submit was:", cause);
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}
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}
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}
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return this;
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}
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@SuppressWarnings("deprecation")
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private void invokeExceptionCaught(final Throwable cause) {
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try {
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handler.exceptionCaught(this, cause);
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} catch (Throwable t) {
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if (logger.isWarnEnabled()) {
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logger.warn(
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"An exception was thrown by a user handler's " +
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"exceptionCaught() method while handling the following exception:", cause);
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}
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}
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}
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@Override
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public ChannelHandlerContext fireUserEventTriggered(final Object event) {
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if (event == null) {
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throw new NullPointerException("event");
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}
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final DefaultChannelHandlerContext next = findContextInbound();
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EventExecutor executor = next.executor();
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if (executor.inEventLoop()) {
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next.invokeUserEventTriggered(event);
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} else {
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executor.execute(new OneTimeTask() {
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@Override
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public void run() {
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next.invokeUserEventTriggered(event);
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}
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});
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}
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return this;
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}
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private void invokeUserEventTriggered(Object event) {
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try {
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((ChannelInboundHandler) handler).userEventTriggered(this, event);
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} catch (Throwable t) {
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notifyHandlerException(t);
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}
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}
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@Override
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public ChannelHandlerContext fireChannelRead(final Object msg) {
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if (msg == null) {
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throw new NullPointerException("msg");
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}
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final DefaultChannelHandlerContext next = findContextInbound();
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ReferenceCountUtil.touch(msg, next);
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EventExecutor executor = next.executor();
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if (executor.inEventLoop()) {
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next.invokeChannelRead(msg);
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} else {
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executor.execute(new OneTimeTask() {
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@Override
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public void run() {
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next.invokeChannelRead(msg);
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}
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});
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}
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return this;
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}
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private void invokeChannelRead(Object msg) {
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try {
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((ChannelInboundHandler) handler).channelRead(this, msg);
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} catch (Throwable t) {
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notifyHandlerException(t);
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}
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}
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@Override
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public ChannelHandlerContext fireChannelReadComplete() {
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final DefaultChannelHandlerContext next = findContextInbound();
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EventExecutor executor = next.executor();
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if (executor.inEventLoop()) {
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next.invokeChannelReadComplete();
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} else {
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Runnable task = next.invokeChannelReadCompleteTask;
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if (task == null) {
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next.invokeChannelReadCompleteTask = task = new Runnable() {
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@Override
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public void run() {
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next.invokeChannelReadComplete();
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}
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};
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}
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executor.execute(task);
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}
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return this;
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}
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private void invokeChannelReadComplete() {
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try {
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((ChannelInboundHandler) handler).channelReadComplete(this);
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} catch (Throwable t) {
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notifyHandlerException(t);
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}
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}
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@Override
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public ChannelHandlerContext fireChannelWritabilityChanged() {
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final DefaultChannelHandlerContext next = findContextInbound();
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EventExecutor executor = next.executor();
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if (executor.inEventLoop()) {
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next.invokeChannelWritabilityChanged();
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} else {
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Runnable task = next.invokeChannelWritableStateChangedTask;
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if (task == null) {
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next.invokeChannelWritableStateChangedTask = task = new Runnable() {
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@Override
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public void run() {
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next.invokeChannelWritabilityChanged();
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}
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};
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}
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executor.execute(task);
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}
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return this;
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}
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private void invokeChannelWritabilityChanged() {
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try {
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((ChannelInboundHandler) handler).channelWritabilityChanged(this);
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} catch (Throwable t) {
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notifyHandlerException(t);
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}
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}
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@Override
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public ChannelFuture bind(SocketAddress localAddress) {
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return bind(localAddress, newPromise());
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}
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@Override
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public ChannelFuture connect(SocketAddress remoteAddress) {
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return connect(remoteAddress, newPromise());
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}
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@Override
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public ChannelFuture connect(SocketAddress remoteAddress, SocketAddress localAddress) {
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return connect(remoteAddress, localAddress, newPromise());
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}
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@Override
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public ChannelFuture disconnect() {
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return disconnect(newPromise());
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}
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@Override
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public ChannelFuture close() {
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return close(newPromise());
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}
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@Override
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public ChannelFuture deregister() {
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return deregister(newPromise());
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}
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@Override
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public ChannelFuture bind(final SocketAddress localAddress, final ChannelPromise promise) {
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if (localAddress == null) {
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throw new NullPointerException("localAddress");
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}
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validatePromise(promise, false);
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final DefaultChannelHandlerContext next = findContextOutbound();
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EventExecutor executor = next.executor();
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if (executor.inEventLoop()) {
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next.invokeBind(localAddress, promise);
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} else {
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safeExecute(executor, new OneTimeTask() {
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@Override
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public void run() {
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next.invokeBind(localAddress, promise);
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}
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}, promise, null);
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}
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return promise;
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}
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private void invokeBind(SocketAddress localAddress, ChannelPromise promise) {
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try {
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((ChannelOutboundHandler) handler).bind(this, localAddress, promise);
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} catch (Throwable t) {
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notifyOutboundHandlerException(t, promise);
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}
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}
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@Override
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public ChannelFuture connect(SocketAddress remoteAddress, ChannelPromise promise) {
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return connect(remoteAddress, null, promise);
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}
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@Override
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public ChannelFuture connect(
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final SocketAddress remoteAddress, final SocketAddress localAddress, final ChannelPromise promise) {
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if (remoteAddress == null) {
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throw new NullPointerException("remoteAddress");
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}
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validatePromise(promise, false);
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final DefaultChannelHandlerContext next = findContextOutbound();
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EventExecutor executor = next.executor();
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if (executor.inEventLoop()) {
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next.invokeConnect(remoteAddress, localAddress, promise);
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} else {
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safeExecute(executor, new OneTimeTask() {
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@Override
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public void run() {
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next.invokeConnect(remoteAddress, localAddress, promise);
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}
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}, promise, null);
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}
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return promise;
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}
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private void invokeConnect(SocketAddress remoteAddress, SocketAddress localAddress, ChannelPromise promise) {
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try {
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((ChannelOutboundHandler) handler).connect(this, remoteAddress, localAddress, promise);
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} catch (Throwable t) {
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notifyOutboundHandlerException(t, promise);
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}
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}
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@Override
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public ChannelFuture disconnect(final ChannelPromise promise) {
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validatePromise(promise, false);
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final DefaultChannelHandlerContext next = findContextOutbound();
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EventExecutor executor = next.executor();
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if (executor.inEventLoop()) {
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// Translate disconnect to close if the channel has no notion of disconnect-reconnect.
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// So far, UDP/IP is the only transport that has such behavior.
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if (!channel().metadata().hasDisconnect()) {
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next.invokeClose(promise);
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} else {
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next.invokeDisconnect(promise);
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}
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} else {
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safeExecute(executor, new OneTimeTask() {
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@Override
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public void run() {
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if (!channel().metadata().hasDisconnect()) {
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next.invokeClose(promise);
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} else {
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next.invokeDisconnect(promise);
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}
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}
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}, promise, null);
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}
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return promise;
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}
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private void invokeDisconnect(ChannelPromise promise) {
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try {
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((ChannelOutboundHandler) handler).disconnect(this, promise);
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} catch (Throwable t) {
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notifyOutboundHandlerException(t, promise);
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}
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}
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@Override
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public ChannelFuture close(final ChannelPromise promise) {
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validatePromise(promise, false);
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final DefaultChannelHandlerContext next = findContextOutbound();
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EventExecutor executor = next.executor();
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if (executor.inEventLoop()) {
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next.invokeClose(promise);
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} else {
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safeExecute(executor, new OneTimeTask() {
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@Override
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public void run() {
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next.invokeClose(promise);
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}
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}, promise, null);
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}
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return promise;
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}
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private void invokeClose(ChannelPromise promise) {
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try {
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((ChannelOutboundHandler) handler).close(this, promise);
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} catch (Throwable t) {
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notifyOutboundHandlerException(t, promise);
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}
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}
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@Override
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public ChannelFuture deregister(final ChannelPromise promise) {
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validatePromise(promise, false);
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final DefaultChannelHandlerContext next = findContextOutbound();
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EventExecutor executor = next.executor();
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if (executor.inEventLoop()) {
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next.invokeDeregister(promise);
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} else {
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safeExecute(executor, new OneTimeTask() {
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@Override
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public void run() {
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next.invokeDeregister(promise);
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}
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}, promise, null);
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}
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return promise;
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}
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|
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@SuppressWarnings("deprecation")
|
|
private void invokeDeregister(ChannelPromise promise) {
|
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try {
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((ChannelOutboundHandler) handler).deregister(this, promise);
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} catch (Throwable t) {
|
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notifyOutboundHandlerException(t, promise);
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}
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}
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@Override
|
|
public ChannelHandlerContext read() {
|
|
final DefaultChannelHandlerContext next = findContextOutbound();
|
|
EventExecutor executor = next.executor();
|
|
if (executor.inEventLoop()) {
|
|
next.invokeRead();
|
|
} else {
|
|
Runnable task = next.invokeReadTask;
|
|
if (task == null) {
|
|
next.invokeReadTask = task = new Runnable() {
|
|
@Override
|
|
public void run() {
|
|
next.invokeRead();
|
|
}
|
|
};
|
|
}
|
|
executor.execute(task);
|
|
}
|
|
|
|
return this;
|
|
}
|
|
|
|
private void invokeRead() {
|
|
try {
|
|
((ChannelOutboundHandler) handler).read(this);
|
|
} catch (Throwable t) {
|
|
notifyHandlerException(t);
|
|
}
|
|
}
|
|
|
|
@Override
|
|
public ChannelFuture write(Object msg) {
|
|
return write(msg, newPromise());
|
|
}
|
|
|
|
@Override
|
|
public ChannelFuture write(final Object msg, final ChannelPromise promise) {
|
|
if (msg == null) {
|
|
throw new NullPointerException("msg");
|
|
}
|
|
|
|
validatePromise(promise, true);
|
|
|
|
write(msg, false, promise);
|
|
|
|
return promise;
|
|
}
|
|
|
|
private void invokeWrite(Object msg, ChannelPromise promise) {
|
|
try {
|
|
((ChannelOutboundHandler) handler).write(this, msg, promise);
|
|
} catch (Throwable t) {
|
|
notifyOutboundHandlerException(t, promise);
|
|
}
|
|
}
|
|
|
|
@Override
|
|
public ChannelHandlerContext flush() {
|
|
final DefaultChannelHandlerContext next = findContextOutbound();
|
|
EventExecutor executor = next.executor();
|
|
if (executor.inEventLoop()) {
|
|
next.invokeFlush();
|
|
} else {
|
|
Runnable task = next.invokeFlushTask;
|
|
if (task == null) {
|
|
next.invokeFlushTask = task = new Runnable() {
|
|
@Override
|
|
public void run() {
|
|
next.invokeFlush();
|
|
}
|
|
};
|
|
}
|
|
safeExecute(executor, task, channel.voidPromise(), null);
|
|
}
|
|
|
|
return this;
|
|
}
|
|
|
|
private void invokeFlush() {
|
|
try {
|
|
((ChannelOutboundHandler) handler).flush(this);
|
|
} catch (Throwable t) {
|
|
notifyHandlerException(t);
|
|
}
|
|
}
|
|
|
|
@Override
|
|
public ChannelFuture writeAndFlush(Object msg, ChannelPromise promise) {
|
|
if (msg == null) {
|
|
throw new NullPointerException("msg");
|
|
}
|
|
|
|
validatePromise(promise, true);
|
|
|
|
write(msg, true, promise);
|
|
|
|
return promise;
|
|
}
|
|
|
|
private void write(Object msg, boolean flush, ChannelPromise promise) {
|
|
|
|
DefaultChannelHandlerContext next = findContextOutbound();
|
|
ReferenceCountUtil.touch(msg, next);
|
|
EventExecutor executor = next.executor();
|
|
if (executor.inEventLoop()) {
|
|
next.invokeWrite(msg, promise);
|
|
if (flush) {
|
|
next.invokeFlush();
|
|
}
|
|
} else {
|
|
int size = channel.estimatorHandle().size(msg);
|
|
if (size > 0) {
|
|
ChannelOutboundBuffer buffer = channel.unsafe().outboundBuffer();
|
|
// Check for null as it may be set to null if the channel is closed already
|
|
if (buffer != null) {
|
|
buffer.incrementPendingOutboundBytes(size);
|
|
}
|
|
}
|
|
Runnable task;
|
|
if (flush) {
|
|
task = WriteAndFlushTask.newInstance(next, msg, size, promise);
|
|
} else {
|
|
task = WriteTask.newInstance(next, msg, size, promise);
|
|
}
|
|
safeExecute(executor, task, promise, msg);
|
|
}
|
|
}
|
|
|
|
@Override
|
|
public ChannelFuture writeAndFlush(Object msg) {
|
|
return writeAndFlush(msg, newPromise());
|
|
}
|
|
|
|
private static void notifyOutboundHandlerException(Throwable cause, ChannelPromise promise) {
|
|
// only try to fail the promise if its not a VoidChannelPromise, as
|
|
// the VoidChannelPromise would also fire the cause through the pipeline
|
|
if (promise instanceof VoidChannelPromise) {
|
|
return;
|
|
}
|
|
|
|
if (!promise.tryFailure(cause)) {
|
|
if (logger.isWarnEnabled()) {
|
|
logger.warn("Failed to fail the promise because it's done already: {}", promise, cause);
|
|
}
|
|
}
|
|
}
|
|
|
|
private void notifyHandlerException(Throwable cause) {
|
|
if (inExceptionCaught(cause)) {
|
|
if (logger.isWarnEnabled()) {
|
|
logger.warn(
|
|
"An exception was thrown by a user handler " +
|
|
"while handling an exceptionCaught event", cause);
|
|
}
|
|
return;
|
|
}
|
|
|
|
invokeExceptionCaught(cause);
|
|
}
|
|
|
|
private static boolean inExceptionCaught(Throwable cause) {
|
|
do {
|
|
StackTraceElement[] trace = cause.getStackTrace();
|
|
if (trace != null) {
|
|
for (StackTraceElement t : trace) {
|
|
if (t == null) {
|
|
break;
|
|
}
|
|
if ("exceptionCaught".equals(t.getMethodName())) {
|
|
return true;
|
|
}
|
|
}
|
|
}
|
|
|
|
cause = cause.getCause();
|
|
} while (cause != null);
|
|
|
|
return false;
|
|
}
|
|
|
|
@Override
|
|
public ChannelPromise newPromise() {
|
|
return new DefaultChannelPromise(channel(), executor());
|
|
}
|
|
|
|
@Override
|
|
public ChannelProgressivePromise newProgressivePromise() {
|
|
return new DefaultChannelProgressivePromise(channel(), executor());
|
|
}
|
|
|
|
@Override
|
|
public ChannelFuture newSucceededFuture() {
|
|
ChannelFuture succeededFuture = this.succeededFuture;
|
|
if (succeededFuture == null) {
|
|
this.succeededFuture = succeededFuture = new SucceededChannelFuture(channel(), executor());
|
|
}
|
|
return succeededFuture;
|
|
}
|
|
|
|
@Override
|
|
public ChannelFuture newFailedFuture(Throwable cause) {
|
|
return new FailedChannelFuture(channel(), executor(), cause);
|
|
}
|
|
|
|
private void validatePromise(ChannelPromise promise, boolean allowVoidPromise) {
|
|
if (promise == null) {
|
|
throw new NullPointerException("promise");
|
|
}
|
|
|
|
if (promise.isDone()) {
|
|
throw new IllegalArgumentException("promise already done: " + promise);
|
|
}
|
|
|
|
if (promise.channel() != channel()) {
|
|
throw new IllegalArgumentException(String.format(
|
|
"promise.channel does not match: %s (expected: %s)", promise.channel(), channel()));
|
|
}
|
|
|
|
if (promise.getClass() == DefaultChannelPromise.class) {
|
|
return;
|
|
}
|
|
|
|
if (!allowVoidPromise && promise instanceof VoidChannelPromise) {
|
|
throw new IllegalArgumentException(
|
|
StringUtil.simpleClassName(VoidChannelPromise.class) + " not allowed for this operation");
|
|
}
|
|
|
|
if (promise instanceof AbstractChannel.CloseFuture) {
|
|
throw new IllegalArgumentException(
|
|
StringUtil.simpleClassName(AbstractChannel.CloseFuture.class) + " not allowed in a pipeline");
|
|
}
|
|
}
|
|
|
|
private DefaultChannelHandlerContext findContextInbound() {
|
|
DefaultChannelHandlerContext ctx = this;
|
|
do {
|
|
ctx = ctx.next;
|
|
} while (!ctx.inbound);
|
|
return ctx;
|
|
}
|
|
|
|
private DefaultChannelHandlerContext findContextOutbound() {
|
|
DefaultChannelHandlerContext ctx = this;
|
|
do {
|
|
ctx = ctx.prev;
|
|
} while (!ctx.outbound);
|
|
return ctx;
|
|
}
|
|
|
|
@Override
|
|
public ChannelPromise voidPromise() {
|
|
return channel.voidPromise();
|
|
}
|
|
|
|
void setRemoved() {
|
|
removed = true;
|
|
}
|
|
|
|
@Override
|
|
public boolean isRemoved() {
|
|
return removed;
|
|
}
|
|
|
|
private static void safeExecute(EventExecutor executor, Runnable runnable, ChannelPromise promise, Object msg) {
|
|
try {
|
|
executor.execute(runnable);
|
|
} catch (Throwable cause) {
|
|
try {
|
|
promise.setFailure(cause);
|
|
} finally {
|
|
if (msg != null) {
|
|
ReferenceCountUtil.release(msg);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
abstract static class AbstractWriteTask<T> extends OneTimeTask {
|
|
private final Recycler.Handle<T> handle;
|
|
|
|
private DefaultChannelHandlerContext ctx;
|
|
private Object msg;
|
|
private ChannelPromise promise;
|
|
private int size;
|
|
|
|
private AbstractWriteTask(Recycler.Handle<T> handle) {
|
|
this.handle = handle;
|
|
}
|
|
|
|
protected static void init(AbstractWriteTask<?> task, DefaultChannelHandlerContext ctx,
|
|
Object msg, int size, ChannelPromise promise) {
|
|
task.ctx = ctx;
|
|
task.msg = msg;
|
|
task.promise = promise;
|
|
task.size = size;
|
|
}
|
|
|
|
@Override
|
|
public final void run() {
|
|
try {
|
|
if (size > 0) {
|
|
ChannelOutboundBuffer buffer = ctx.channel.unsafe().outboundBuffer();
|
|
// Check for null as it may be set to null if the channel is closed already
|
|
if (buffer != null) {
|
|
buffer.decrementPendingOutboundBytes(size);
|
|
}
|
|
}
|
|
write(ctx, msg, promise);
|
|
} finally {
|
|
// Set to null so the GC can collect them directly
|
|
ctx = null;
|
|
msg = null;
|
|
promise = null;
|
|
recycle(handle);
|
|
}
|
|
}
|
|
|
|
protected void write(DefaultChannelHandlerContext ctx, Object msg, ChannelPromise promise) {
|
|
ctx.invokeWrite(msg, promise);
|
|
}
|
|
|
|
protected abstract void recycle(Recycler.Handle<T> handle);
|
|
}
|
|
|
|
static final class WriteTask
|
|
extends AbstractWriteTask<WriteTask> implements SingleThreadEventLoop.NonWakeupRunnable {
|
|
|
|
private static final Recycler<WriteTask> RECYCLER = new Recycler<WriteTask>() {
|
|
@Override
|
|
protected WriteTask newObject(Handle<WriteTask> handle) {
|
|
return new WriteTask(handle);
|
|
}
|
|
};
|
|
|
|
private static WriteTask newInstance(
|
|
DefaultChannelHandlerContext ctx, Object msg, int size, ChannelPromise promise) {
|
|
WriteTask task = RECYCLER.get();
|
|
init(task, ctx, msg, size, promise);
|
|
return task;
|
|
}
|
|
|
|
private WriteTask(Recycler.Handle<WriteTask> handle) {
|
|
super(handle);
|
|
}
|
|
|
|
@Override
|
|
protected void recycle(Recycler.Handle<WriteTask> handle) {
|
|
RECYCLER.recycle(this, handle);
|
|
}
|
|
}
|
|
|
|
static final class WriteAndFlushTask extends AbstractWriteTask<WriteAndFlushTask> {
|
|
|
|
private static final Recycler<WriteAndFlushTask> RECYCLER = new Recycler<WriteAndFlushTask>() {
|
|
@Override
|
|
protected WriteAndFlushTask newObject(Handle<WriteAndFlushTask> handle) {
|
|
return new WriteAndFlushTask(handle);
|
|
}
|
|
};
|
|
|
|
private static WriteAndFlushTask newInstance(
|
|
DefaultChannelHandlerContext ctx, Object msg, int size, ChannelPromise promise) {
|
|
WriteAndFlushTask task = RECYCLER.get();
|
|
init(task, ctx, msg, size, promise);
|
|
return task;
|
|
}
|
|
|
|
private WriteAndFlushTask(Recycler.Handle<WriteAndFlushTask> handle) {
|
|
super(handle);
|
|
}
|
|
|
|
@Override
|
|
public void write(DefaultChannelHandlerContext ctx, Object msg, ChannelPromise promise) {
|
|
super.write(ctx, msg, promise);
|
|
ctx.invokeFlush();
|
|
}
|
|
|
|
@Override
|
|
protected void recycle(Recycler.Handle<WriteAndFlushTask> handle) {
|
|
RECYCLER.recycle(this, handle);
|
|
}
|
|
}
|
|
|
|
@Override
|
|
public String toHintString() {
|
|
return '\'' + name + "' will handle the message from this point.";
|
|
}
|
|
|
|
@Override
|
|
public String toString() {
|
|
return StringUtil.simpleClassName(ChannelHandlerContext.class) + '(' + name + ", " + channel + ')';
|
|
}
|
|
}
|