#if !defined(_HTAB_H_)

#define _HTAB_H_ 1

#include <stdint.h>

#include "mylock.h"

typedef unsigned int (*hash_key_hash_fn_t)(void*);
typedef int (*hash_key_cmp_fn_t)(void*, void*);
typedef void* (*hash_key_copy_fn_t)(void*);
typedef void (*hash_key_free_fn_t)(void*);

typedef struct {
    hash_key_hash_fn_t hash;
    hash_key_cmp_fn_t  cmp;
    hash_key_copy_fn_t copy;
    hash_key_free_fn_t free;
} hash_key_fn_t;

typedef struct _hent {
    struct _hent* next;
    void*         key;
    int64_t       data;
} hent_t;

typedef struct {
    mylock_t      lock;
    int           nslots;
    hash_key_fn_t fn;
    hent_t**      slots;
} htab_t;

extern hash_key_fn_t string_hash_key;
extern hash_key_fn_t int_hash_key;

extern int     ht_init(htab_t*, int, hash_key_fn_t);
extern void    ht_fini(htab_t*);
extern hent_t* ht_get(htab_t*, void*);
extern hent_t* ht_add(htab_t*, void*);
extern int     ht_del(htab_t*, void*);

#endif