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/* 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
*/
#include "ioops.h"
/* Eventually the listener protocol will use this, too */
/*
* functions and variables in this file are only used by a single thread and
* thus do not need to be thread-safe
*/
/* List of registered external IO handlers */
static struct ioOps *ioList;
/* Add fds for all registered IO handlers */
void registered_IO_add_fds(int *fdmax,
fd_set * rfds, fd_set * wfds, fd_set * efds)
{
struct ioOps *o = ioList;
while (o) {
struct ioOps *current = o;
int fdnum;
assert(current->fdset);
fdnum = current->fdset(rfds, wfds, efds);
if (*fdmax < fdnum)
*fdmax = fdnum;
o = o->next;
}
}
/* Consume fds for all registered IO handlers */
void registered_IO_consume_fds(int *selret,
fd_set * rfds, fd_set * wfds, fd_set * efds)
{
struct ioOps *o = ioList;
while (o) {
struct ioOps *current = o;
assert(current->consume);
*selret = current->consume(*selret, rfds, wfds, efds);
o = o->next;
}
}
void registerIO(struct ioOps *ops)
{
assert(ops != NULL);
ops->next = ioList;
ioList = ops;
ops->prev = NULL;
if (ops->next)
ops->next->prev = ops;
}
void deregisterIO(struct ioOps *ops)
{
assert(ops != NULL);
if (ioList == ops)
ioList = ops->next;
else if (ops->prev != NULL)
ops->prev->next = ops->next;
}
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