mirror of
https://github.com/DrBeef/Raze.git
synced 2024-12-13 22:21:01 +00:00
65 lines
1.6 KiB
C
65 lines
1.6 KiB
C
|
|
#pragma once
|
|
|
|
#ifndef hash_h_
|
|
#define hash_h_
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
// Hash functions
|
|
|
|
typedef struct hashitem_ // size is 12/24 bytes.
|
|
{
|
|
char *string;
|
|
intptr_t key;
|
|
struct hashitem_ *next;
|
|
} hashitem_t;
|
|
|
|
typedef struct
|
|
{
|
|
int32_t size;
|
|
hashitem_t **items;
|
|
} hashtable_t;
|
|
|
|
void hash_init(hashtable_t *t);
|
|
void hash_loop(hashtable_t *t, void(*func)(const char *, intptr_t));
|
|
void hash_free(hashtable_t *t);
|
|
intptr_t hash_findcase(hashtable_t const * t, char const * s);
|
|
intptr_t hash_find(hashtable_t const * t, char const * s);
|
|
void hash_add(hashtable_t *t, const char *s, intptr_t key, int32_t replace);
|
|
void hash_delete(hashtable_t *t, const char *s);
|
|
|
|
|
|
// Hash functions
|
|
// modified for raw binary keys and one big allocation, and maximum find() performance
|
|
|
|
typedef struct inthashitem_
|
|
{
|
|
intptr_t key;
|
|
intptr_t value;
|
|
struct inthashitem_ *collision; // use NULL to signify empty and pointer identity to signify end of linked list
|
|
} inthashitem_t;
|
|
|
|
typedef struct
|
|
{
|
|
inthashitem_t * items;
|
|
uint32_t count;
|
|
} inthashtable_t;
|
|
|
|
void inthash_init(inthashtable_t *t);
|
|
void inthash_loop(inthashtable_t const *t, void(*func)(intptr_t, intptr_t));
|
|
void inthash_free(inthashtable_t *t);
|
|
intptr_t inthash_find(inthashtable_t const *t, intptr_t key);
|
|
void inthash_add(inthashtable_t *t, intptr_t key, intptr_t value, int32_t replace);
|
|
void inthash_delete(inthashtable_t *t, intptr_t key);
|
|
// keep the load factor below 0.75 and make sure the size is odd
|
|
// ideally we would find the next largest prime number
|
|
#define INTHASH_SIZE(size) ((size * 4u / 3u) | 1u)
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif
|