};
struct Hashmap {
- hash_func_t hash_func;
- compare_func_t compare_func;
+ const struct hash_ops *hash_ops;
struct hashmap_entry *iterate_list_head, *iterate_list_tail;
return strcmp(a, b);
}
+const struct hash_ops string_hash_ops = {
+ .hash = string_hash_func,
+ .compare = string_compare_func
+};
+
unsigned long trivial_hash_func(const void *p, const uint8_t hash_key[HASH_KEY_SIZE]) {
uint64_t u;
siphash24((uint8_t*) &u, &p, sizeof(p), hash_key);
return a < b ? -1 : (a > b ? 1 : 0);
}
+const struct hash_ops trivial_hash_ops = {
+ .hash = trivial_hash_func,
+ .compare = trivial_compare_func
+};
+
unsigned long uint64_hash_func(const void *p, const uint8_t hash_key[HASH_KEY_SIZE]) {
uint64_t u;
siphash24((uint8_t*) &u, p, sizeof(uint64_t), hash_key);
return a < b ? -1 : (a > b ? 1 : 0);
}
+const struct hash_ops uint64_hash_ops = {
+ .hash = uint64_hash_func,
+ .compare = uint64_compare_func
+};
+
#if SIZEOF_DEV_T != 8
unsigned long devt_hash_func(const void *p, const uint8_t hash_key[HASH_KEY_SIZE]) {
uint64_t u;
b = *(const dev_t*) _b;
return a < b ? -1 : (a > b ? 1 : 0);
}
+
+const struct hash_ops devt_hash_ops = {
+ .hash = devt_hash_func,
+ .compare = devt_compare_func
+};
#endif
static unsigned bucket_hash(Hashmap *h, const void *p) {
- return (unsigned) (h->hash_func(p, h->hash_key) % h->n_buckets);
+ return (unsigned) (h->hash_ops->hash(p, h->hash_key) % h->n_buckets);
}
static void get_hash_key(uint8_t hash_key[HASH_KEY_SIZE], bool reuse_is_ok) {
memcpy(hash_key, current, sizeof(current));
}
-Hashmap *hashmap_new(hash_func_t hash_func, compare_func_t compare_func) {
+Hashmap *hashmap_new(const struct hash_ops *hash_ops) {
bool b;
Hashmap *h;
size_t size;
return NULL;
}
- h->hash_func = hash_func ? hash_func : trivial_hash_func;
- h->compare_func = compare_func ? compare_func : trivial_compare_func;
+ h->hash_ops = hash_ops ? hash_ops : &trivial_hash_ops;
h->n_buckets = INITIAL_N_BUCKETS;
h->n_entries = 0;
return h;
}
-int hashmap_ensure_allocated(Hashmap **h, hash_func_t hash_func, compare_func_t compare_func) {
+int hashmap_ensure_allocated(Hashmap **h, const struct hash_ops *hash_ops) {
Hashmap *q;
assert(h);
if (*h)
return 0;
- q = hashmap_new(hash_func, compare_func);
+ q = hashmap_new(hash_ops);
if (!q)
return -ENOMEM;
assert(hash < h->n_buckets);
for (e = h->buckets[hash]; e; e = e->bucket_next)
- if (h->compare_func(e->key, key) == 0)
+ if (h->hash_ops->compare(e->key, key) == 0)
return e;
return NULL;
for (i = h->iterate_list_head; i; i = i->iterate_next) {
unsigned long old_bucket, new_bucket;
- old_bucket = h->hash_func(i->key, h->hash_key) % h->n_buckets;
+ old_bucket = h->hash_ops->hash(i->key, h->hash_key) % h->n_buckets;
/* First, drop from old bucket table */
if (i->bucket_next)
h->buckets[old_bucket] = i->bucket_next;
/* Then, add to new backet table */
- new_bucket = h->hash_func(i->key, nkey) % m;
+ new_bucket = h->hash_ops->hash(i->key, nkey) % m;
i->bucket_next = n[new_bucket];
i->bucket_previous = NULL;
assert(h);
- copy = hashmap_new(h->hash_func, h->compare_func);
+ copy = hashmap_new(h->hash_ops);
if (!copy)
return NULL;