Add hash and rbtree delete callback, cleanup the code and improve performance (hash...
[profile/ivi/eina.git] / src / include / eina_hash.h
1 /* EINA - EFL data type library
2  * Copyright (C) 2002-2008 Carsten Haitzler, Gustavo Sverzut Barbieri,
3  *                         Vincent Torri, Jorge Luis Zapata Muga, Cedric Bail
4  *
5  * This library is free software; you can redistribute it and/or
6  * modify it under the terms of the GNU Lesser General Public
7  * License as published by the Free Software Foundation; either
8  * version 2.1 of the License, or (at your option) any later version.
9  *
10  * This library is distributed in the hope that it will be useful,
11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
13  * Lesser General Public License for more details.
14  *
15  * You should have received a copy of the GNU Lesser General Public
16  * License along with this library;
17  * if not, see <http://www.gnu.org/licenses/>.
18  */
19
20 #ifndef EINA_HASH_H_
21 #define EINA_HASH_H_
22
23 #include "eina_types.h"
24 #include "eina_iterator.h"
25
26 /**
27  * @addtogroup Eina_Data_Types_Group Data Types
28  *
29  * @{
30  */
31
32 /**
33  * @addtogroup Eina_Containers_Group Containers
34  *
35  * @{
36  */
37
38 /**
39  * @defgroup Eina_Hash_Group Hash Table
40  *
41  * @{
42  */
43
44 typedef struct _Eina_Hash Eina_Hash;
45 typedef struct _Eina_Hash_Tuple Eina_Hash_Tuple;
46 struct _Eina_Hash_Tuple
47 {
48    const void *key;
49    void *data;
50
51    unsigned int key_length;
52 };
53
54 typedef unsigned int (*Eina_Key_Length)(const void *key);
55 #define EINA_KEY_LENGTH(Function) ((Eina_Key_Length)Function)
56 typedef int (*Eina_Key_Cmp)(const void *key1, int key1_length,
57                             const void *key2, int key2_length);
58 #define EINA_KEY_CMP(Function) ((Eina_Key_Cmp)Function)
59 typedef int (*Eina_Key_Hash)(const void *key, int key_length);
60 #define EINA_KEY_HASH(Function) ((Eina_Key_Hash)Function)
61
62 EAPI int eina_hash_init(void);
63 EAPI int eina_hash_shutdown(void);
64
65 EAPI Eina_Hash * eina_hash_new(Eina_Key_Length key_length_cb,
66                                Eina_Key_Cmp key_cmp_cb,
67                                Eina_Key_Hash key_hash_cb,
68                                Eina_Free_Cb data_free_cb);
69 EAPI Eina_Hash * eina_hash_string_djb2_new(Eina_Free_Cb data_free_cb);
70 EAPI Eina_Hash * eina_hash_string_superfast_new(Eina_Free_Cb data_free_cb);
71
72 EAPI Eina_Bool   eina_hash_add(Eina_Hash *hash, const void *key, const void *data);
73 EAPI Eina_Bool   eina_hash_direct_add(Eina_Hash *hash, const void *key, const void *data);
74 EAPI Eina_Bool   eina_hash_del(Eina_Hash *hash, const void *key, const void *data);
75 EAPI void      * eina_hash_find(const Eina_Hash *hash, const void *key);
76 EAPI void      * eina_hash_modify(Eina_Hash *hash, const void *key, const void *data);
77 EAPI void        eina_hash_free(Eina_Hash *hash);
78 EAPI int         eina_hash_population(const Eina_Hash *hash);
79
80 EAPI Eina_Bool   eina_hash_add_by_hash(Eina_Hash *hash,
81                                        const void *key, int key_length, int key_hash,
82                                        const void *data);
83 EAPI Eina_Bool   eina_hash_direct_add_by_hash(Eina_Hash *hash,
84                                               const void *key, int key_length, int key_hash,
85                                               const void *data);
86 EAPI Eina_Bool   eina_hash_del_by_hash(Eina_Hash *hash,
87                                        const void *key, int key_length, int key_hash,
88                                        const void *data);
89 EAPI void      * eina_hash_find_by_hash(const Eina_Hash *hash,
90                                         const void *key, int key_length, int key_hash);
91 EAPI void      * eina_hash_modify_by_hash(Eina_Hash *hash,
92                                           const void *key, int key_length, int key_hash,
93                                           const void *data);
94
95 EAPI Eina_Iterator * eina_hash_iterator_key_new(const Eina_Hash *hash);
96 EAPI Eina_Iterator * eina_hash_iterator_data_new(const Eina_Hash *hash);
97 EAPI Eina_Iterator * eina_hash_iterator_tuple_new(const Eina_Hash *hash);
98
99 typedef Eina_Bool (*Eina_Foreach)(const Eina_Hash *hash, const void *key, void *data, void *fdata);
100 EAPI void        eina_hash_foreach(const Eina_Hash *hash,
101                                    Eina_Foreach cb,
102                                    const void *fdata);
103
104 /* Paul Hsieh (http://www.azillionmonkeys.com/qed/hash.html) hash function
105    used by WebCore (http://webkit.org/blog/8/hashtables-part-2/) */
106 EAPI int eina_hash_superfast(const char *key, int len);
107
108 /* Hash function first reported by dan bernstein many years ago in comp.lang.c */
109 static inline int eina_hash_djb2(const char *key, int len);
110
111 #include "eina_inline_hash.x"
112
113 /**
114  * @}
115  */
116
117 /**
118  * @}
119  */
120
121 /**
122  * @}
123  */
124
125 #endif /*EINA_HASH_H_*/