2 * Written by Josh Dybnis and released to the public domain, as explained at
3 * http://creativecommons.org/licenses/publicdomain
5 * generic interface for map-like data structures
13 const map_impl_t *impl;
17 map_t *map_alloc (const map_impl_t *map_impl, const datatype_t *key_type) {
18 map_t *map = nbd_malloc(sizeof(map_t));
20 map->data = map->impl->alloc(key_type);
24 void map_free (map_t *map) {
25 map->impl->free_(map->data);
28 void map_print (map_t *map) {
29 map->impl->print(map->data);
32 uint64_t map_count (map_t *map) {
33 return map->impl->count(map->data);
36 uint64_t map_get (map_t *map, void *key) {
37 return map->impl->get(map->data, key);
40 uint64_t map_set (map_t *map, void *key, uint64_t new_val) {
41 return map->impl->cas(map->data, key, CAS_EXPECT_WHATEVER, new_val);
44 uint64_t map_add (map_t *map, void *key, uint64_t new_val) {
45 return map->impl->cas(map->data, key, CAS_EXPECT_DOES_NOT_EXIST, new_val);
48 uint64_t map_cas (map_t *map, void *key, uint64_t expected_val, uint64_t new_val) {
49 return map->impl->cas(map->data, key, expected_val, new_val);
52 uint64_t map_replace(map_t *map, void *key, uint64_t new_val) {
53 return map->impl->cas(map->data, key, CAS_EXPECT_EXISTS, new_val);
56 uint64_t map_remove (map_t *map, void *key) {
57 return map->impl->remove(map->data, key);