1 #ifndef HASHMAP_H 2 # define HASHMAP_H 3 4 # include <stdlib.h> 5 # include <stdint.h> 6 7 #ifndef __GNUC_PREREQ 8 #if defined(__GNUC__) && defined(__GNUC_MINOR__) 9 #define __GNUC_PREREQ(maj, min) \ 10 ((__GNUC__ << 16) + __GNUC_MINOR__ >= ((maj) << 16) + (min)) 11 #else 12 #define __GNUC_PREREQ(maj, min) 0 13 #endif 14 #endif 15 16 struct ext2fs_hashmap; 17 18 struct ext2fs_hashmap_entry { 19 void *data; 20 const void *key; 21 size_t key_len; 22 struct ext2fs_hashmap_entry *next; 23 struct ext2fs_hashmap_entry *list_next; 24 struct ext2fs_hashmap_entry *list_prev; 25 }; 26 27 struct ext2fs_hashmap *ext2fs_hashmap_create( 28 uint32_t(*hash_fct)(const void*, size_t), 29 void(*free_fct)(void*), size_t size); 30 int ext2fs_hashmap_add(struct ext2fs_hashmap *h, 31 void *data, const void *key,size_t key_len); 32 void *ext2fs_hashmap_lookup(struct ext2fs_hashmap *h, const void *key, 33 size_t key_len); 34 void *ext2fs_hashmap_iter_in_order(struct ext2fs_hashmap *h, 35 struct ext2fs_hashmap_entry **it); 36 void ext2fs_hashmap_del(struct ext2fs_hashmap *h, 37 struct ext2fs_hashmap_entry *e); 38 void ext2fs_hashmap_free(struct ext2fs_hashmap *h); 39 40 uint32_t ext2fs_djb2_hash(const void *str, size_t size); 41 42 #endif /* !HASHMAP_H */ 43