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 * as indicated by the @author tags.
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 * Licensed 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,
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package io.undertow.util;

import io.undertow.UndertowLogger;

import java.util.LinkedList;
import java.util.List;
import java.util.concurrent.Executor;

Executor that will continue to re-run tasks in a loop that are submitted from its own thread.
Author:Stuart Douglas
/** * Executor that will continue to re-run tasks in a loop that are submitted from its own thread. * * @author Stuart Douglas */
@Deprecated public class PipeliningExecutor implements Executor { private final Executor executor; private static final ThreadLocal<LinkedList<Runnable>> THREAD_QUEUE = new ThreadLocal<>(); public PipeliningExecutor(Executor executor) { this.executor = executor; } @Override public void execute(final Runnable command) { List<Runnable> queue = THREAD_QUEUE.get(); if (queue != null) { queue.add(command); } else { executor.execute(new Runnable() { @Override public void run() { LinkedList<Runnable> queue = THREAD_QUEUE.get(); if (queue == null) { THREAD_QUEUE.set(queue = new LinkedList<>()); } try { command.run(); } catch (Throwable t) { UndertowLogger.REQUEST_LOGGER.debugf(t, "Task %s failed", command); } Runnable runnable = queue.poll(); while (runnable != null) { try { runnable.run(); } catch (Throwable t) { UndertowLogger.REQUEST_LOGGER.debugf(t, "Task %s failed", command); } runnable = queue.poll(); } } }); } } }