/*
* Bag of pointers
* Copyright (c) 2001 by Abramo Bagnara <abramo@alsa-project.org>
*
*
* This library is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
*/
#include "mixer_local.h"
int bag_new(bag_t **bag)
{
bag_t *b = malloc(sizeof(*b));
if (!b)
return -ENOMEM;
INIT_LIST_HEAD(b);
*bag = b;
return 0;
}
void bag_free(bag_t *bag)
{
assert(list_empty(bag));
free(bag);
}
int bag_empty(bag_t *bag)
{
return list_empty(bag);
}
int bag_add(bag_t *bag, void *ptr)
{
bag1_t *b = malloc(sizeof(*b));
if (!b)
return -ENOMEM;
b->ptr = ptr;
list_add_tail(&b->list, bag);
return 0;
}
int bag_del(bag_t *bag, void *ptr)
{
struct list_head *pos;
list_for_each(pos, bag) {
bag1_t *b = list_entry(pos, bag1_t, list);
if (b->ptr == ptr) {
list_del(&b->list);
free(b);
return 0;
}
}
return -ENOENT;
}
void bag_del_all(bag_t *bag)
{
while (!list_empty(bag))
list_del(bag->next);
}