From 7d66859277280e48eb717756cd0b1f50b3ea2054 Mon Sep 17 00:00:00 2001 From: Eric Wong Date: Thu, 3 Jan 2008 10:03:34 +0000 Subject: ioops: make this zero-impact when compiling w/o zeroconf as well This reduces the text size of the binary slightly when zeroconf support is not built, and keeps the interface code cleaner as well. git-svn-id: https://svn.musicpd.org/mpd/trunk@7133 09075e82-0dd4-0310-85a5-a0d7c8717e4f --- src/ioops.c | 87 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 87 insertions(+) create mode 100644 src/ioops.c (limited to 'src/ioops.c') diff --git a/src/ioops.c b/src/ioops.c new file mode 100644 index 000000000..fde862b50 --- /dev/null +++ b/src/ioops.c @@ -0,0 +1,87 @@ +/* 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 */ + +#ifdef HAVE_ZEROCONF + +/* + * 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; +} + +#endif /* HAVE_ZEROCONF */ -- cgit v1.2.3