/* the Music Player Daemon (MPD) * Copyright (C) 2003-2007 by Warren Dukes (warren.dukes@gmail.com) * This project's homepage is: http://www.musicpd.org * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ #ifndef IOOPS_H #define IOOPS_H #include <sys/select.h> struct ioOps { struct ioOps *prev, *next; /* * Called before each 'select' statement. * To register for IO, call FD_SET for each required queue * Return the highest fd number you registered */ int (*fdset) (fd_set * rfds, fd_set * wfds, fd_set * efds); /* * Called after each 'select' statement. * fdCount is the number of fds total in all sets. It may be 0. * For each fd you registered for in (fdset), you should FD_CLR it from the * appropriate queue(s). * Return the total number of fds left in all sets (Ie, return fdCount * minus the number of times you called FD_CLR). */ int (*consume) (int fdCount, fd_set * rfds, fd_set * wfds, fd_set * efds); }; /* Call this to register your io operation handler struct */ void registerIO(struct ioOps *ops); /* Call this to deregister your io operation handler struct */ void deregisterIO(struct ioOps *ops); /* Add fds for all registered IO handlers */ void registered_IO_add_fds(int *fdmax, fd_set * rfds, fd_set * wfds, fd_set * efds); /* Consume fds for all registered IO handlers */ void registered_IO_consume_fds(int *selret, fd_set * rfds, fd_set * wfds, fd_set * efds); #endif