NonStickyEventExecutorGroup.java — netty Source File

Source Code

/*
 * Copyright 2016 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.util.concurrent;

import io.netty.util.internal.ObjectUtil;
import io.netty.util.internal.PlatformDependent;
import io.netty.util.internal.UnstableApi;

import java.util.Collection;
import java.util.Iterator;
import java.util.List;
import java.util.Queue;
import java.util.concurrent.Callable;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.RejectedExecutionException;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.TimeoutException;
import java.util.concurrent.atomic.AtomicInteger;
import java.util.concurrent.atomic.AtomicReference;

/**
 * {@link EventExecutorGroup} which will preserve {@link Runnable} execution order but makes no guarantees about what
 * {@link EventExecutor} (and therefore {@link Thread}) will be used to execute the {@link Runnable}s.
 *
 * <p>The {@link EventExecutorGroup#next()} for the wrapped {@link EventExecutorGroup} must <strong>NOT</strong> return
 * executors of type {@link OrderedEventExecutor}.
 */
@UnstableApi
public final class NonStickyEventExecutorGroup implements EventExecutorGroup {
    private final EventExecutorGroup group;
    private final int maxTaskExecutePerRun;

    /**
     * Creates a new instance. Be aware that the given {@link EventExecutorGroup} <strong>MUST NOT</strong> contain
     * any {@link OrderedEventExecutor}s.
     */
    public NonStickyEventExecutorGroup(EventExecutorGroup group) {
        this(group, 1024);
    }

    /**
     * Creates a new instance. Be aware that the given {@link EventExecutorGroup} <strong>MUST NOT</strong> contain
     * any {@link OrderedEventExecutor}s.
     */
    public NonStickyEventExecutorGroup(EventExecutorGroup group, int maxTaskExecutePerRun) {
        this.group = verify(group);
        this.maxTaskExecutePerRun = ObjectUtil.checkPositive(maxTaskExecutePerRun, "maxTaskExecutePerRun");
// ... (289 more lines)