Refactor the aio transport to not depend on the AioChannelFinder and so not need for refelection
This commit is contained in:
Norman Maurer
parent
17641d52fb
commit
fada776756
@ -1,32 +0,0 @@
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/*
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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.aio;
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/**
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* Allow to fine the {@link AbstractAioChannel} for a task.
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*/
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interface AioChannelFinder {
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/**
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* Try to find the {@link AbstractAioChannel} for the given {@link Runnable}.
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*
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* @param command the {@link Runnable} for which the {@link AbstractAioChannel} should be found.
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* @return channel the {@link AbstractAioChannel} which belongs to the {@link Runnable} or {@code null} if
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* it could not found.
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* @throws Exception will get thrown if an error accours.
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*/
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AbstractAioChannel findChannel(Runnable command) throws Exception;
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}
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@ -35,59 +35,33 @@ public abstract class AioCompletionHandler<V, A extends Channel> implements Comp
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*/
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*/
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protected abstract void failed0(Throwable exc, A channel);
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protected abstract void failed0(Throwable exc, A channel);
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private static final int MAX_STACK_DEPTH = 4;
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private static final ThreadLocal<Integer> STACK_DEPTH = new ThreadLocal<Integer>() {
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@Override
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protected Integer initialValue() {
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return 0;
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}
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};
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@Override
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@Override
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public final void completed(final V result, final A channel) {
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public final void completed(final V result, final A channel) {
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EventLoop loop = channel.eventLoop();
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EventLoop loop = channel.eventLoop();
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if (loop.inEventLoop()) {
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if (loop.inEventLoop()) {
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Integer d = STACK_DEPTH.get();
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completed0(result, channel);
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if (d < MAX_STACK_DEPTH) {
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} else {
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STACK_DEPTH.set(d + 1);
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loop.execute(new Runnable() {
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try {
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@Override
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public void run() {
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completed0(result, channel);
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completed0(result, channel);
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} finally {
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STACK_DEPTH.set(d);
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}
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}
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return;
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});
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}
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}
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}
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loop.execute(new Runnable() {
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@Override
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public void run() {
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completed0(result, channel);
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}
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});
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}
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}
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@Override
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@Override
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public final void failed(final Throwable exc, final A channel) {
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public final void failed(final Throwable exc, final A channel) {
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EventLoop loop = channel.eventLoop();
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EventLoop loop = channel.eventLoop();
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if (loop.inEventLoop()) {
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if (loop.inEventLoop()) {
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Integer d = STACK_DEPTH.get();
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failed0(exc, channel);
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if (d < MAX_STACK_DEPTH) {
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} else {
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STACK_DEPTH.set(d + 1);
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loop.execute(new Runnable() {
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try {
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@Override
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public void run() {
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failed0(exc, channel);
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failed0(exc, channel);
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} finally {
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STACK_DEPTH.set(d);
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}
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}
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return;
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});
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}
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}
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}
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loop.execute(new Runnable() {
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@Override
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public void run() {
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failed0(exc, channel);
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}
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});
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}
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}
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}
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}
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@ -20,9 +20,6 @@ import io.netty.channel.ChannelTaskScheduler;
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import io.netty.channel.EventExecutor;
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import io.netty.channel.EventExecutor;
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import io.netty.channel.EventLoopException;
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import io.netty.channel.EventLoopException;
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import io.netty.channel.MultithreadEventLoopGroup;
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import io.netty.channel.MultithreadEventLoopGroup;
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import io.netty.util.internal.InternalLogger;
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import io.netty.util.internal.InternalLoggerFactory;
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import io.netty.util.internal.PlatformDependent;
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import java.io.IOException;
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import java.io.IOException;
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import java.nio.channels.AsynchronousChannelGroup;
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import java.nio.channels.AsynchronousChannelGroup;
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@ -38,26 +35,6 @@ import java.util.concurrent.TimeUnit;
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*
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*
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*/
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*/
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public class AioEventLoopGroup extends MultithreadEventLoopGroup {
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public class AioEventLoopGroup extends MultithreadEventLoopGroup {
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private static final InternalLogger LOGGER = InternalLoggerFactory.getInstance(AioEventLoopGroup.class);
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private static final AioChannelFinder CHANNEL_FINDER;
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static {
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AioChannelFinder finder;
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try {
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if (PlatformDependent.hasUnsafe()) {
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finder = new UnsafeAioChannelFinder();
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} else {
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finder = new ReflectiveAioChannelFinder();
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}
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} catch (Throwable t) {
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LOGGER.debug(String.format(
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"Failed to instantiate the optimal %s implementation - falling back to %s.",
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AioChannelFinder.class.getSimpleName(), ReflectiveAioChannelFinder.class.getSimpleName()), t);
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finder = new ReflectiveAioChannelFinder();
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}
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CHANNEL_FINDER = finder;
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}
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private final AioExecutorService groupExecutor = new AioExecutorService();
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private final AioExecutorService groupExecutor = new AioExecutorService();
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private final AsynchronousChannelGroup group;
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private final AsynchronousChannelGroup group;
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@ -135,7 +112,7 @@ public class AioEventLoopGroup extends MultithreadEventLoopGroup {
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return new AioEventLoop(this, threadFactory, scheduler);
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return new AioEventLoop(this, threadFactory, scheduler);
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}
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}
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private final class AioExecutorService extends AbstractExecutorService {
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private static final class AioExecutorService extends AbstractExecutorService {
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// It does not shut down the underlying EventExecutor - it merely pretends to be shut down.
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// It does not shut down the underlying EventExecutor - it merely pretends to be shut down.
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// The actual shut down is done by EventLoopGroup and EventLoop implementation.
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// The actual shut down is done by EventLoopGroup and EventLoop implementation.
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@ -169,34 +146,7 @@ public class AioEventLoopGroup extends MultithreadEventLoopGroup {
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@Override
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@Override
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public void execute(Runnable command) {
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public void execute(Runnable command) {
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Class<? extends Runnable> commandType = command.getClass();
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command.run();
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if (commandType.getName().startsWith("sun.nio.ch.")) {
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executeAioTask(command);
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} else {
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next().execute(command);
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}
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}
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private void executeAioTask(Runnable command) {
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AbstractAioChannel ch = null;
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try {
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ch = CHANNEL_FINDER.findChannel(command);
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} catch (Throwable t) {
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// Ignore
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}
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EventExecutor l;
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if (ch != null) {
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l = ch.eventLoop();
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} else {
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l = next();
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}
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if (l.isShutdown()) {
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command.run();
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} else {
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l.execute(command);
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}
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}
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}
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}
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}
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}
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}
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@ -1,77 +0,0 @@
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/*
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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.aio;
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import java.lang.reflect.Field;
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import java.util.HashMap;
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import java.util.Map;
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/**
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* {@link AioChannelFinder} implementation which use reflection for find the right {@link AbstractAioChannel}.
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*/
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final class ReflectiveAioChannelFinder implements AioChannelFinder {
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private static volatile Map<Class<?>, Field> fieldCache = new HashMap<Class<?>, Field>();
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@Override
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public AbstractAioChannel findChannel(Runnable command) throws Exception {
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Field f;
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for (;;) {
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f = findField(command);
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if (f == null) {
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return null;
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}
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Object next = f.get(command);
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if (next instanceof AbstractAioChannel) {
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return (AbstractAioChannel) next;
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}
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command = (Runnable) next;
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}
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}
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private static Field findField(Object command) throws Exception {
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Map<Class<?>, Field> fieldCache = ReflectiveAioChannelFinder.fieldCache;
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Class<?> commandType = command.getClass();
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Field res = fieldCache.get(commandType);
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if (res != null) {
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return res;
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}
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for (Field f: commandType.getDeclaredFields()) {
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if (f.getType() == Runnable.class) {
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f.setAccessible(true);
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put(fieldCache, commandType, f);
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return f;
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}
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if (f.getType() == Object.class) {
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f.setAccessible(true);
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Object candidate = f.get(command);
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if (candidate instanceof AbstractAioChannel) {
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put(fieldCache, commandType, f);
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return f;
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}
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}
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}
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return null;
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}
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private static void put(Map<Class<?>, Field> oldCache, Class<?> key, Field value) {
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Map<Class<?>, Field> newCache = new HashMap<Class<?>, Field>(oldCache.size());
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newCache.putAll(oldCache);
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newCache.put(key, value);
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fieldCache = newCache;
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}
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}
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@ -1,80 +0,0 @@
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/*
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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.aio;
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import io.netty.util.internal.PlatformDependent;
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import java.lang.reflect.Field;
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import java.util.HashMap;
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import java.util.Map;
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/**
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* {@link AioChannelFinder} implementation which uses {@code sun.misc.Unsafe}.
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*/
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final class UnsafeAioChannelFinder implements AioChannelFinder {
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private static volatile Map<Class<?>, Long> offsetCache = new HashMap<Class<?>, Long>();
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@Override
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public AbstractAioChannel findChannel(Runnable command) throws Exception {
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Long offset;
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for (;;) {
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offset = findFieldOffset(command);
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if (offset == null) {
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return null;
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}
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Object next = PlatformDependent.getObject(command, offset);
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if (next instanceof AbstractAioChannel) {
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return (AbstractAioChannel) next;
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}
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command = (Runnable) next;
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}
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}
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private static Long findFieldOffset(Object command) throws Exception {
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Map<Class<?>, Long> offsetCache = UnsafeAioChannelFinder.offsetCache;
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Class<?> commandType = command.getClass();
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Long res = offsetCache.get(commandType);
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if (res != null) {
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return res;
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}
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for (Field f: commandType.getDeclaredFields()) {
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if (f.getType() == Runnable.class) {
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res = PlatformDependent.objectFieldOffset(f);
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put(offsetCache, commandType, res);
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return res;
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}
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if (f.getType() == Object.class) {
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f.setAccessible(true);
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Object candidate = f.get(command);
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if (candidate instanceof AbstractAioChannel) {
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res = PlatformDependent.objectFieldOffset(f);
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put(offsetCache, commandType, res);
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return res;
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}
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}
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}
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return null;
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}
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private static void put(Map<Class<?>, Long> oldCache, Class<?> key, Long value) {
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Map<Class<?>, Long> newCache = new HashMap<Class<?>, Long>(oldCache.size());
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newCache.putAll(oldCache);
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newCache.put(key, value);
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offsetCache = newCache;
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}
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}
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@ -1,98 +0,0 @@
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package io.netty.channel.aio;
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import static org.junit.Assert.*;
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import static org.easymock.EasyMock.*;
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import org.junit.Test;
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/*
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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,
|
|
||||||
* 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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*
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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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|
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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|
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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|
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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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public abstract class AbstractAioChannelFinderTest {
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protected abstract AioChannelFinder create();
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@Test
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public void testNull() throws Exception {
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AioChannelFinder finder = create();
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AbstractAioChannel channel = finder.findChannel(new Runnable() {
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@Override
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public void run() {
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// Noop
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}
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});
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assertNull(channel);
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}
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@Test
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public void testRunnableWrappsAbstractAioChannel() throws Exception {
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final Object mockChannel = createMock("mockChannel", AbstractAioChannel.class);
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replay(mockChannel);
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Runnable r = new Runnable() {
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@SuppressWarnings("unused")
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@Override
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public void run() {
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Object channel = mockChannel;
|
|
||||||
// Noop
|
|
||||||
}
|
|
||||||
};
|
|
||||||
AioChannelFinder finder = create();
|
|
||||||
AbstractAioChannel channel = finder.findChannel(r);
|
|
||||||
assertNotNull(channel);
|
|
||||||
|
|
||||||
AbstractAioChannel channel2 = finder.findChannel(r);
|
|
||||||
assertNotNull(channel2);
|
|
||||||
assertSame(channel2, channel);
|
|
||||||
verify(mockChannel);
|
|
||||||
reset(mockChannel);
|
|
||||||
}
|
|
||||||
|
|
||||||
@Test
|
|
||||||
public void testRunnableWrappsRunnable() throws Exception {
|
|
||||||
final Object mockChannel = createMock("mockChannel", AbstractAioChannel.class);
|
|
||||||
replay(mockChannel);
|
|
||||||
|
|
||||||
final Runnable r = new Runnable() {
|
|
||||||
|
|
||||||
@SuppressWarnings("unused")
|
|
||||||
@Override
|
|
||||||
public void run() {
|
|
||||||
Object channel = mockChannel;
|
|
||||||
// Noop
|
|
||||||
}
|
|
||||||
};
|
|
||||||
Runnable r2 = new Runnable() {
|
|
||||||
|
|
||||||
@SuppressWarnings("unused")
|
|
||||||
@Override
|
|
||||||
public void run() {
|
|
||||||
Runnable runnable = r;
|
|
||||||
// Noop
|
|
||||||
}
|
|
||||||
};
|
|
||||||
AioChannelFinder finder = create();
|
|
||||||
AbstractAioChannel channel = finder.findChannel(r2);
|
|
||||||
assertNotNull(channel);
|
|
||||||
|
|
||||||
AbstractAioChannel channel2 = finder.findChannel(r2);
|
|
||||||
assertNotNull(channel2);
|
|
||||||
assertSame(channel2, channel);
|
|
||||||
verify(mockChannel);
|
|
||||||
reset(mockChannel);
|
|
||||||
}
|
|
||||||
}
|
|
||||||
@ -1,33 +0,0 @@
|
|||||||
/*
|
|
||||||
* Copyright 2012 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:
|
|
||||||
*
|
|
||||||
* http://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.aio;
|
|
||||||
|
|
||||||
import io.netty.channel.AbstractEventLoopTest;
|
|
||||||
import io.netty.channel.EventLoopGroup;
|
|
||||||
import io.netty.channel.socket.ServerSocketChannel;
|
|
||||||
import io.netty.channel.socket.aio.AioServerSocketChannel;
|
|
||||||
|
|
||||||
public class AioEventLoopTest extends AbstractEventLoopTest {
|
|
||||||
@Override
|
|
||||||
protected EventLoopGroup newEventLoopGroup() {
|
|
||||||
return new AioEventLoopGroup();
|
|
||||||
}
|
|
||||||
|
|
||||||
@Override
|
|
||||||
protected Class<? extends ServerSocketChannel> newChannel() {
|
|
||||||
return AioServerSocketChannel.class;
|
|
||||||
}
|
|
||||||
}
|
|
||||||
@ -1,25 +0,0 @@
|
|||||||
/*
|
|
||||||
* Copyright 2012 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:
|
|
||||||
*
|
|
||||||
* http://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.aio;
|
|
||||||
|
|
||||||
public class ReflectiveAioChannelFinderTest extends AbstractAioChannelFinderTest {
|
|
||||||
|
|
||||||
@Override
|
|
||||||
protected AioChannelFinder create() {
|
|
||||||
return new ReflectiveAioChannelFinder();
|
|
||||||
}
|
|
||||||
|
|
||||||
}
|
|
||||||
@ -1,25 +0,0 @@
|
|||||||
/*
|
|
||||||
* Copyright 2012 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:
|
|
||||||
*
|
|
||||||
* http://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.aio;
|
|
||||||
|
|
||||||
public class UnsafeAioChannelFinderTest extends AbstractAioChannelFinderTest {
|
|
||||||
|
|
||||||
@Override
|
|
||||||
protected AioChannelFinder create() {
|
|
||||||
return new UnsafeAioChannelFinder();
|
|
||||||
}
|
|
||||||
|
|
||||||
}
|
|
||||||
Loading…
Reference in New Issue
Block a user