mirror of
https://github.com/systemd/systemd.git
synced 2024-11-05 06:52:22 +03:00
48 lines
1.6 KiB
C
48 lines
1.6 KiB
C
/*-*- Mode: C; c-basic-offset: 8 -*-*/
|
|
|
|
#ifndef foohashmaphfoo
|
|
#define foohashmaphfoo
|
|
|
|
#include <stdbool.h>
|
|
|
|
/* Pretty straightforward hash table implementation. As a minor
|
|
* optimization a NULL hashmap object will be treated as empty hashmap
|
|
* for all read operations. That way it is not necessary to
|
|
* instantiate an object for each Hashmap use. */
|
|
|
|
typedef struct Hashmap Hashmap;
|
|
|
|
typedef unsigned (*hash_func_t)(const void *p);
|
|
typedef int (*compare_func_t)(const void *a, const void *b);
|
|
|
|
unsigned string_hash_func(const void *p);
|
|
int string_compare_func(const void *a, const void *b);
|
|
|
|
unsigned trivial_hash_func(const void *p);
|
|
int trivial_compare_func(const void *a, const void *b);
|
|
|
|
Hashmap *hashmap_new(hash_func_t hash_func, compare_func_t compare_func);
|
|
void hashmap_free(Hashmap*);
|
|
|
|
int hashmap_put(Hashmap *h, const void *key, void *value);
|
|
void* hashmap_get(Hashmap *h, const void *key);
|
|
void* hashmap_remove(Hashmap *h, const void *key);
|
|
|
|
unsigned hashmap_size(Hashmap *h);
|
|
bool hashmap_isempty(Hashmap *h);
|
|
|
|
void *hashmap_iterate(Hashmap *h, void **state, const void **key);
|
|
void *hashmap_iterate_backwards(Hashmap *h, void **state, const void **key);
|
|
|
|
void *hashmap_steal_first(Hashmap *h);
|
|
void* hashmap_first(Hashmap *h);
|
|
void* hashmap_last(Hashmap *h);
|
|
|
|
#define HASHMAP_FOREACH(e, h, state) \
|
|
for ((state) = NULL, (e) = hashmap_iterate((h), &(state), NULL); (e); (e) = hashmap_iterate((h), &(state), NULL))
|
|
|
|
#define HASHMAP_FOREACH_BACKWARDS(e, h, state) \
|
|
for ((state) = NULL, (e) = hashmap_iterate_backwards((h), &(state), NULL); (e); (e) = hashmap_iterate_backwards((h), &(state), NULL))
|
|
|
|
#endif
|