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Add support for server allocated object IDs

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We set aside a range of the object ID space for use by the server.  This
allows the server to bind an object to an ID for a client and pass that
object to the client.  The client can use the object immediately and the
server can emit events to the object immdiately.
This commit is contained in:
Kristian Høgsberg 2011-11-18 21:59:36 -05:00
parent 190492b97c
commit bdbd6ef80b
5 changed files with 108 additions and 30 deletions
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74
src/wayland-util.c
View file

@ -148,26 +148,37 @@ wl_map_init(struct wl_map *map)
WL_EXPORT void
wl_map_release(struct wl_map *map)
{
wl_array_release(&map->entries);
wl_array_release(&map->client_entries);
wl_array_release(&map->server_entries);
}
WL_EXPORT uint32_t
wl_map_insert_new(struct wl_map *map, void *data)
wl_map_insert_new(struct wl_map *map, uint32_t side, void *data)
{
union map_entry *start, *entry;
struct wl_array *entries;
uint32_t base;
if (side == WL_MAP_CLIENT_SIDE) {
entries = &map->client_entries;
base = 0;
} else {
entries = &map->server_entries;
base = WL_SERVER_ID_START;
}
if (map->free_list) {
start = map->entries.data;
start = entries->data;
entry = &start[map->free_list >> 1];
map->free_list = entry->next;
} else {
entry = wl_array_add(&map->entries, sizeof *entry);
start = map->entries.data;
entry = wl_array_add(entries, sizeof *entry);
start = entries->data;
}
entry->data = data;
return entry - start;
return (entry - start) + base;
}
WL_EXPORT int
@ -175,17 +186,23 @@ wl_map_insert_at(struct wl_map *map, uint32_t i, void *data)
{
union map_entry *start;
uint32_t count;
struct wl_array *entries;
/* assert(map->free_list == NULL */
count = map->entries.size / sizeof *start;
if (i < WL_SERVER_ID_START) {
entries = &map->client_entries;
} else {
entries = &map->server_entries;
i -= WL_SERVER_ID_START;
}
count = entries->size / sizeof *start;
if (count < i)
return -1;
if (count == i)
wl_array_add(&map->entries, sizeof *start);
wl_array_add(entries, sizeof *start);
start = map->entries.data;
start = entries->data;
start[i].data = data;
return 0;
@ -195,8 +212,16 @@ WL_EXPORT void
wl_map_remove(struct wl_map *map, uint32_t i)
{
union map_entry *start;
struct wl_array *entries;
start = map->entries.data;
if (i < WL_SERVER_ID_START) {
entries = &map->client_entries;
} else {
entries = &map->server_entries;
i -= WL_SERVER_ID_START;
}
start = entries->data;
start[i].next = map->free_list;
map->free_list = (i << 1) | 1;
}
@ -206,9 +231,17 @@ wl_map_lookup(struct wl_map *map, uint32_t i)
{
union map_entry *start;
uint32_t count;
struct wl_array *entries;
start = map->entries.data;
count = map->entries.size / sizeof *start;
if (i < WL_SERVER_ID_START) {
entries = &map->client_entries;
} else {
entries = &map->server_entries;
i -= WL_SERVER_ID_START;
}
start = entries->data;
count = entries->size / sizeof *start;
if (i < count && !(start[i].next & 1))
return start[i].data;
@ -216,15 +249,22 @@ wl_map_lookup(struct wl_map *map, uint32_t i)
return NULL;
}
WL_EXPORT void
wl_map_for_each(struct wl_map *map, wl_iterator_func_t func, void *data)
static void
for_each_helper(struct wl_array *entries, wl_iterator_func_t func, void *data)
{
union map_entry *start, *end, *p;
start = map->entries.data;
end = (union map_entry *) ((char *) map->entries.data + map->entries.size);
start = entries->data;
end = (union map_entry *) ((char *) entries->data + entries->size);
for (p = start; p < end; p++)
if (p->data && !(p->next & 1))
func(p->data, data);
}
WL_EXPORT void
wl_map_for_each(struct wl_map *map, wl_iterator_func_t func, void *data)
{
for_each_helper(&map->client_entries, func, data);
for_each_helper(&map->server_entries, func, data);
}