io.undertow.util.PipeliningExecutor Maven / Gradle / Ivy
/*
* JBoss, Home of Professional Open Source.
* Copyright 2014 Red Hat, Inc., and individual contributors
* as indicated by the @author tags.
*
* 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,
* 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.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
*/
@Deprecated
public class PipeliningExecutor implements Executor {
private final Executor executor;
private static final ThreadLocal> THREAD_QUEUE = new ThreadLocal<>();
public PipeliningExecutor(Executor executor) {
this.executor = executor;
}
@Override
public void execute(final Runnable command) {
List queue = THREAD_QUEUE.get();
if (queue != null) {
queue.add(command);
} else {
executor.execute(new Runnable() {
@Override
public void run() {
LinkedList 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();
}
}
});
}
}
}