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map: use invalid value for empty list

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This commit is contained in:
Wim Taymans 2018-08-14 16:57:34 +02:00
parent d4ab36d52a
commit ce4232cbc7
1 changed files with 3 additions and 3 deletions
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6
src/pipewire/map.h
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@ -71,7 +71,7 @@ static inline void pw_map_init(struct pw_map *map, size_t size, size_t extend)
{ {
pw_array_init(&map->items, extend); pw_array_init(&map->items, extend);
pw_array_ensure_size(&map->items, size * sizeof(union pw_map_item)); pw_array_ensure_size(&map->items, size * sizeof(union pw_map_item));
map->free_list = 0; map->free_list = SPA_ID_INVALID;
} }
/** Clear a map /** Clear a map
@ -94,7 +94,7 @@ static inline uint32_t pw_map_insert_new(struct pw_map *map, void *data)
union pw_map_item *start, *item; union pw_map_item *start, *item;
uint32_t id; uint32_t id;
if (map->free_list) { if (map->free_list != SPA_ID_INVALID) {
start = (union pw_map_item *) map->items.data; start = (union pw_map_item *) map->items.data;
item = &start[map->free_list >> 1]; item = &start[map->free_list >> 1];
map->free_list = item->next; map->free_list = item->next;
@ -139,7 +139,7 @@ static inline bool pw_map_insert_at(struct pw_map *map, uint32_t id, void *data)
*/ */
static inline void pw_map_remove(struct pw_map *map, uint32_t id) static inline void pw_map_remove(struct pw_map *map, uint32_t id)
{ {
pw_map_get_item(map, id)->next = map->free_list | 1; pw_map_get_item(map, id)->next = map->free_list;
map->free_list = (id << 1) | 1; map->free_list = (id << 1) | 1;
} }