/*

* Copyright 2013 Klaus Reimer <k@ailis.de>

* See LICENSE.md for licensing information.

*

* Based on libusb <http://libusb.info/>:

*

* Copyright 2001 Johannes Erdfelt <johannes@erdfelt.com>

* Copyright 2007-2009 Daniel Drake <dsd@gentoo.org>

* Copyright 2010-2012 Peter Stuge <peter@stuge.se>

* Copyright 2008-2013 Nathan Hjelm <hjelmn@users.sourceforge.net>

* Copyright 2009-2013 Pete Batard <pete@akeo.ie>

* Copyright 2009-2013 Ludovic Rousseau <ludovic.rousseau@gmail.com>

* Copyright 2010-2012 Michael Plante <michael.plante@gmail.com>

* Copyright 2011-2013 Hans de Goede <hdegoede@redhat.com>

* Copyright 2012-2013 Martin Pieuchot <mpi@openbsd.org>

* Copyright 2012-2013 Toby Gray <toby.gray@realvnc.com>

*/

package org.usb4java;

import java.io.FileDescriptor;

/**

* Listener interface for pollfd notifications.

*

* @author Klaus Reimer (k@ailis.de)

*/

public interface PollfdListener

{

/**

* Callback function, invoked when a new file descriptor should be added to

* the set of file descriptors monitored for events.

*

* @param fd

* the new file descriptor.

* @param events

* events to monitor for.

* @param userData

* User data pointer.

*/

void pollfdAdded(FileDescriptor fd, int events, Object userData);

/**

* Callback function, invoked when a file descriptor should be removed from

* the set of file descriptors being monitored for events.

*

* After returning from this callback, do not use that file descriptor

* again.

*

* @param fd

* The file descriptor to stop monitoring.

* @param userData

* User data pointer.

*/

void pollfdRemoved(FileDescriptor fd, Object userData);

}