-typedef struct ht hashtable_t;
-typedef struct sl skiplist_t;
-typedef struct ll list_t;
-
-hashtable_t * ht_alloc (void);
-skiplist_t * sl_alloc (void);
-list_t * ll_alloc (void);
-
-uint64_t ht_cas (hashtable_t *ht, const char *key, uint32_t key_len, uint64_t expected_val, uint64_t val);
-uint64_t ht_get (hashtable_t *ht, const char *key, uint32_t len);
-uint64_t ht_remove (hashtable_t *ht, const char *key, uint32_t len);
-uint64_t ht_count (hashtable_t *ht);
-void ht_print (hashtable_t *ht);
-void ht_free (hashtable_t *ht);
-
-uint64_t sl_cas (skiplist_t *sl, const void *key_data, uint32_t key_len, uint64_t expected_val, uint64_t new_val);
-uint64_t sl_lookup (skiplist_t *sl, const void *key_data, uint32_t key_len);
-uint64_t sl_remove (skiplist_t *sl, const void *key_data, uint32_t key_len);
-uint64_t sl_count (skiplist_t *sl);
-void sl_print (skiplist_t *sl);
-void sl_free (skiplist_t *sl);
-
-uint64_t ll_cas (list_t *ll, const void *key_data, uint32_t key_len, uint64_t expected_val, uint64_t new_val);
-uint64_t ll_lookup (list_t *ll, const void *key_data, uint32_t key_len);
-uint64_t ll_remove (list_t *ll, const void *key_data, uint32_t key_len);
-uint64_t ll_count (list_t *ll);
-void ll_print (list_t *ll);
-void ll_free (list_t *ll);
-