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-rw-r--r--src/ioops.c87
1 files changed, 87 insertions, 0 deletions
diff --git a/src/ioops.c b/src/ioops.c
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+++ b/src/ioops.c
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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 */
+
+#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 */