io.netty.util.concurrent.EventExecutorGroup Maven / Gradle / Ivy
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This artifact provides a single jar that contains all classes required to use remote EJB and JMS, including
all dependencies. It is intended for use by those not using maven, maven users should just import the EJB and
JMS BOM's instead (shaded JAR's cause lots of problems with maven, as it is very easy to inadvertently end up
with different versions on classes on the class path).
/*
* 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:
*
* 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 java.util.Iterator;
import java.util.List;
import java.util.concurrent.Callable;
import java.util.concurrent.ScheduledExecutorService;
import java.util.concurrent.TimeUnit;
/**
* The {@link EventExecutorGroup} is responsible for providing the {@link EventExecutor}'s to use
* via its {@link #next()} method. Besides this, it is also responsible for handling their
* life-cycle and allows shutting them down in a global fashion.
*
*/
public interface EventExecutorGroup extends ScheduledExecutorService, Iterable {
/**
* Returns {@code true} if and only if all {@link EventExecutor}s managed by this {@link EventExecutorGroup}
* are being {@linkplain #shutdownGracefully() shut down gracefully} or was {@linkplain #isShutdown() shut down}.
*/
boolean isShuttingDown();
/**
* Shortcut method for {@link #shutdownGracefully(long, long, TimeUnit)} with sensible default values.
*
* @return the {@link #terminationFuture()}
*/
Future shutdownGracefully();
/**
* Signals this executor that the caller wants the executor to be shut down. Once this method is called,
* {@link #isShuttingDown()} starts to return {@code true}, and the executor prepares to shut itself down.
* Unlike {@link #shutdown()}, graceful shutdown ensures that no tasks are submitted for 'the quiet period'
* (usually a couple seconds) before it shuts itself down. If a task is submitted during the quiet period,
* it is guaranteed to be accepted and the quiet period will start over.
*
* @param quietPeriod the quiet period as described in the documentation
* @param timeout the maximum amount of time to wait until the executor is {@linkplain #shutdown()}
* regardless if a task was submitted during the quiet period
* @param unit the unit of {@code quietPeriod} and {@code timeout}
*
* @return the {@link #terminationFuture()}
*/
Future shutdownGracefully(long quietPeriod, long timeout, TimeUnit unit);
/**
* Returns the {@link Future} which is notified when all {@link EventExecutor}s managed by this
* {@link EventExecutorGroup} have been terminated.
*/
Future terminationFuture();
/**
* @deprecated {@link #shutdownGracefully(long, long, TimeUnit)} or {@link #shutdownGracefully()} instead.
*/
@Override
@Deprecated
void shutdown();
/**
* @deprecated {@link #shutdownGracefully(long, long, TimeUnit)} or {@link #shutdownGracefully()} instead.
*/
@Override
@Deprecated
List shutdownNow();
/**
* Returns one of the {@link EventExecutor}s managed by this {@link EventExecutorGroup}.
*/
EventExecutor next();
@Override
Iterator iterator();
@Override
Future submit(Runnable task);
@Override
Future submit(Runnable task, T result);
@Override
Future submit(Callable task);
@Override
ScheduledFuture schedule(Runnable command, long delay, TimeUnit unit);
@Override
ScheduledFuture schedule(Callable callable, long delay, TimeUnit unit);
@Override
ScheduledFuture scheduleAtFixedRate(Runnable command, long initialDelay, long period, TimeUnit unit);
@Override
ScheduledFuture scheduleWithFixedDelay(Runnable command, long initialDelay, long delay, TimeUnit unit);
}