com.barchart.udt.nio.SelectorProviderUDT Maven / Gradle / Ivy

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/**
 * Copyright (C) 2009-2012 Barchart, Inc. 
 *
 * All rights reserved. Licensed under the OSI BSD License.
 *
 * http://www.opensource.org/licenses/bsd-license.php
 */
package com.barchart.udt.nio;

import java.io.IOException;
import java.nio.channels.DatagramChannel;
import java.nio.channels.Pipe;
import java.nio.channels.ServerSocketChannel;
import java.nio.channels.SocketChannel;
import java.nio.channels.spi.AbstractSelector;
import java.nio.channels.spi.SelectorProvider;

import com.barchart.udt.SocketUDT;
import com.barchart.udt.TypeUDT;

/**
 * you must use the same system-wide provider instance for the same
 * {@link TypeUDT} of UDT channels and UDT selectors;
 */
public class SelectorProviderUDT extends SelectorProvider {

	/**
	 * system-wide provider instance, for {@link TypeUDT#DATAGRAM} UDT sockets
	 */
	public static final SelectorProviderUDT DATAGRAM = //
	new SelectorProviderUDT(TypeUDT.DATAGRAM);

	/**
	 * system-wide provider instance, for {@link TypeUDT#STREAM} UDT sockets
	 */
	public static final SelectorProviderUDT STREAM = //
	new SelectorProviderUDT(TypeUDT.STREAM);

	/**
	 * {@link TypeUDT} of UDT sockets generated by this provider
	 */
	public final TypeUDT type;

	protected SelectorProviderUDT(TypeUDT type) {
		this.type = type;
	}

	protected volatile int acceptQueueSize = SocketUDT.DEFAULT_ACCEPT_QUEUE_SIZE;

	public int getAcceptQueueSize() {
		return acceptQueueSize;
	}

	public void setAcceptQueueSize(int queueSize) {
		acceptQueueSize = queueSize;
	}

	protected volatile int maxSelectorSize = SocketUDT.DEFAULT_MAX_SELECTOR_SIZE;

	public int getMaxSelectorSize() {
		return maxSelectorSize;
	}

	public void setMaxSelectorSize(int selectorSize) {
		maxSelectorSize = selectorSize;
	}

	protected volatile int maxConnectorSize = SocketUDT.DEFAULT_CONNECTOR_POOL_SIZE;

	public int getMaxConnectorSize() {
		return maxConnectorSize;
	}

	public void setMaxConnectorSize(int connectorSize) {
		maxConnectorSize = connectorSize;
	}

	//

	/**
	 * feature not available
	 */
	@Override
	public DatagramChannel openDatagramChannel() throws IOException {
		throw new RuntimeException("feature not available");
	}

	/**
	 * feature not available
	 */
	@Override
	public Pipe openPipe() throws IOException {
		throw new RuntimeException("feature not available");
	}

	@Override
	public AbstractSelector openSelector() throws IOException {
		return new SelectorUDT(this, maxSelectorSize, maxConnectorSize);
	}

	@Override
	public ServerSocketChannel openServerSocketChannel() throws IOException {
		SocketUDT serverSocketUDT = new SocketUDT(type);
		return new ChannelServerSocketUDT(this, serverSocketUDT);
	}

	@Override
	public SocketChannel openSocketChannel() throws IOException {
		SocketUDT socketUDT = new SocketUDT(type);
		return new ChannelSocketUDT(this, socketUDT);
	}

}