1 /* xbt/dict.h -- api to a generic dictionary */
3 /* Copyright (c) 2004-2011. The SimGrid Team.
4 * All rights reserved. */
6 /* This program is free software; you can redistribute it and/or modify it
7 * under the terms of the license (GNU LGPL) which comes with this package. */
13 #include "xbt/misc.h" /* SG_BEGIN_DECL */
14 #include "xbt/dynar.h" /* void_f_pvoid_t */
15 #include <stdint.h> /* uintptr_t */
19 /** @addtogroup XBT_dict
20 * @brief The dictionary data structure (comparable to hash tables)
22 * This section describes the API to a dictionary structure that
23 * associates as string to a void* key. It provides the same
24 * functionality than an hash table.
26 * Here is a little example of use:
27 * \verbatim xbt_dict_t mydict = xbt_dict_new();
30 sprintf(buff,"some very precious data");
31 xbt_dict_set(mydict,"my data", strdup(buff), free);
33 sprintf(buff,"another good stuff");
34 xbt_dict_set(mydict,"my data", strdup(buff), free); // previous data gets erased (and freed) by second add
39 /** @defgroup XBT_dict_cons Dict constructor and destructor
45 /** \brief Dictionary data type (opaque structure) */
46 typedef struct s_xbt_dict *xbt_dict_t;
47 XBT_PUBLIC(xbt_dict_t) xbt_dict_new(void);
48 XBT_PUBLIC(xbt_dict_t) xbt_dict_new_homogeneous(void_f_pvoid_t free_ctn);
49 XBT_PUBLIC(void) xbt_dict_free(xbt_dict_t * dict);
50 XBT_PUBLIC(unsigned int) xbt_dict_size(xbt_dict_t dict);
53 /** @defgroup XBT_dict_basic Dictionaries basic usage
56 * Careful, those functions assume that the key is null-terminated.
61 XBT_PUBLIC(void) xbt_dict_set(xbt_dict_t dict, const char *key, void *data,
62 void_f_pvoid_t free_ctn);
63 XBT_PUBLIC(void *) xbt_dict_get(xbt_dict_t dict, const char *key);
64 XBT_PUBLIC(void *) xbt_dict_get_or_null(xbt_dict_t dict, const char *key);
65 XBT_PUBLIC(char *) xbt_dict_get_key(xbt_dict_t dict, const void *data);
67 XBT_PUBLIC(void) xbt_dict_remove(xbt_dict_t dict, const char *key);
68 XBT_PUBLIC(void) xbt_dict_reset(xbt_dict_t dict);
69 XBT_PUBLIC(int) xbt_dict_length(xbt_dict_t dict);
70 XBT_PUBLIC(void) xbt_dict_dump_output_string(void *s);
71 XBT_PUBLIC(void) xbt_dict_dump(xbt_dict_t dict, void (*output) (void *));
72 XBT_PUBLIC(void) xbt_dict_dump_sizes(xbt_dict_t dict);
73 XBT_PUBLIC(int) xbt_dict_is_empty(xbt_dict_t dict);
77 /** @defgroup XBT_dict_nnul Dictionaries with non-nul terminated keys
80 * Those functions work even with non-null terminated keys.
84 XBT_PUBLIC(void) xbt_dict_set_ext(xbt_dict_t dict,
85 const char *key, int key_len,
86 void *data, void_f_pvoid_t free_ctn);
87 XBT_PUBLIC(void *) xbt_dict_get_ext(xbt_dict_t dict, const char *key,
89 XBT_PUBLIC(void *) xbt_dict_get_or_null_ext(xbt_dict_t dict,
90 const char *key, int key_len);
91 XBT_PUBLIC(void) xbt_dict_remove_ext(xbt_dict_t dict, const char *key,
94 #ifdef XBT_USE_DEPRECATED
95 XBT_PUBLIC(void) xbt_dicti_set(xbt_dict_t dict, uintptr_t key,
97 XBT_PUBLIC(uintptr_t) xbt_dicti_get(xbt_dict_t dict, uintptr_t key);
98 XBT_PUBLIC(void) xbt_dicti_remove(xbt_dict_t dict, uintptr_t key);
102 /** @defgroup XBT_dict_curs Cursors on dictionaries
105 * Don't get impressed, there is a lot of functions here, but traversing a
106 * dictionary is immediate with the xbt_dict_foreach macro.
107 * You only need the other functions in rare cases (they are not used directly in SG itself).
109 * Here is an example (assuming that the dictionary contains strings, ie
110 * that the <tt>data</tt> argument of xbt_dict_set was always a null-terminated char*):
111 \verbatim xbt_dict_cursor_t cursor=NULL;
114 xbt_dict_foreach(dict,cursor,key,data) {
115 printf(" - Seen: %s->%s\n",key,data);
119 * \warning Do not add or remove entries to the cache while traversing !!
123 /** @brief Cursor on dictionaries (opaque type) */
124 typedef struct s_xbt_dict_cursor *xbt_dict_cursor_t;
125 XBT_PUBLIC(xbt_dict_cursor_t) xbt_dict_cursor_new(const xbt_dict_t dict);
126 XBT_PUBLIC(void) xbt_dict_cursor_free(xbt_dict_cursor_t * cursor);
128 XBT_PUBLIC(void) xbt_dict_cursor_rewind(xbt_dict_cursor_t cursor);
131 XBT_PUBLIC(char *) xbt_dict_cursor_get_key(xbt_dict_cursor_t cursor);
132 XBT_PUBLIC(void *) xbt_dict_cursor_get_data(xbt_dict_cursor_t cursor);
133 XBT_PUBLIC(void) xbt_dict_cursor_set_data(xbt_dict_cursor_t cursor,
135 void_f_pvoid_t free_ctn);
137 XBT_PUBLIC(void) xbt_dict_cursor_first(const xbt_dict_t dict,
138 xbt_dict_cursor_t * cursor);
139 XBT_PUBLIC(void) xbt_dict_cursor_step(xbt_dict_cursor_t cursor);
140 XBT_PUBLIC(int) xbt_dict_cursor_get_or_free(xbt_dict_cursor_t * cursor,
141 char **key, void **data);
142 /** @def xbt_dict_foreach
144 # define xbt_dict_foreach(dict,cursor,key,data) \
145 for (cursor=NULL, xbt_dict_cursor_first((dict),&(cursor)) ; \
146 xbt_dict_cursor_get_or_free(&(cursor),(char**)&(key),(void**)(&data));\
147 xbt_dict_cursor_step(cursor) )
151 #ifdef XBT_USE_DEPRECATED
152 /** @defgroup XBT_dict_multi Multi-level dictionaries
155 * They can be seen as dictionary of multiple keys or as dictionary of
156 * dictionary of ... of data. Most of the functions here work the same way
157 * than their simple dictionary counterpart.
159 * Note that there is no xbt_multidict_free neither xbt_multi_dict_new functions.
160 * Use xbt_dict_free() and xbt_dict_new() instead.
165 /*----[ xbt_multidict_set ]--------------------------------------------------*/
167 xbt_multidict_set(xbt_dict_t mdict,
168 xbt_dynar_t keys, void *data, void (*free_ctn) (void *));
170 xbt_multidict_set_ext(xbt_dict_t mdict,
171 xbt_dynar_t keys, xbt_dynar_t lens,
172 void *data, void_f_pvoid_t free_ctn);
174 /*----[ xbt_multidict_get ]--------------------------------------------------*/
175 XBT_PUBLIC(void *) xbt_multidict_get(xbt_dict_t mdict, xbt_dynar_t keys);
176 XBT_PUBLIC(void *) xbt_multidict_get_ext(xbt_dict_t mdict,
180 /*----[ xbt_multidict_remove ]-----------------------------------------------*/
181 /*---------------------------------------------------------------------------*/
182 XBT_PUBLIC(void) xbt_multidict_remove(xbt_dict_t mdict, xbt_dynar_t keys);
183 XBT_PUBLIC(void) xbt_multidict_remove_ext(xbt_dict_t mdict,
191 #endif /* _XBT_DICT_H */