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Diffstat (limited to '')
-rw-r--r-- | src/include/hash.h | 75 |
1 files changed, 75 insertions, 0 deletions
diff --git a/src/include/hash.h b/src/include/hash.h new file mode 100644 index 0000000..71c8658 --- /dev/null +++ b/src/include/hash.h @@ -0,0 +1,75 @@ +#ifndef FR_HASH_H +#define FR_HASH_H + +/* + * hash.h Structures and prototypes + * for fast hashing. + * + * Version: $Id$ + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA + * + * Copyright 2005,2006 The FreeRADIUS server project + */ + +RCSIDH(hash_h, "$Id$") + +#ifdef __cplusplus +extern "C" { +#endif + +/* + * Fast hash, which isn't too bad. Don't use for cryptography, + * just for hashing internal data. + */ +uint32_t fr_hash(void const *, size_t); +uint32_t fr_hash_update(void const *data, size_t size, uint32_t hash); +uint32_t fr_hash_string(char const *p); + +typedef struct fr_hash_table_t fr_hash_table_t; +typedef void (*fr_hash_table_free_t)(void *); +typedef uint32_t (*fr_hash_table_hash_t)(void const *); +typedef int (*fr_hash_table_cmp_t)(void const *, void const *); +typedef int (*fr_hash_table_walk_t)(void * /* ctx */, void * /* data */); + +fr_hash_table_t *fr_hash_table_create(fr_hash_table_hash_t hashNode, + fr_hash_table_cmp_t cmpNode, + fr_hash_table_free_t freeNode); +void fr_hash_table_free(fr_hash_table_t *ht); +int fr_hash_table_insert(fr_hash_table_t *ht, void const *data); +int fr_hash_table_delete(fr_hash_table_t *ht, void const *data); +void *fr_hash_table_yank(fr_hash_table_t *ht, void const *data); +int fr_hash_table_replace(fr_hash_table_t *ht, void const *data); +void *fr_hash_table_finddata(fr_hash_table_t *ht, void const *data); +int fr_hash_table_num_elements(fr_hash_table_t *ht); +int fr_hash_table_walk(fr_hash_table_t *ht, + fr_hash_table_walk_t callback, + void *ctx); + +typedef struct fr_hash_entry_s fr_hash_entry_t; + +typedef struct fr_hash_iter_s { + uint32_t bucket; + fr_hash_entry_t *node; +} fr_hash_iter_t; + +void *fr_hash_table_iter_init(fr_hash_table_t *ht, fr_hash_iter_t *iter); +void *fr_hash_table_iter_next(fr_hash_table_t *ht, fr_hash_iter_t *iter); + +#ifdef __cplusplus +} +#endif + +#endif /* FR_HASH_H */ |