src/dictionary.h

   1 #ifndef NETDATA_DICTIONARY_H
   2 #define NETDATA_DICTIONARY_H 1
   3
   4 struct dictionary_stats {
   5         unsigned long long inserts;
   6         unsigned long long deletes;
   7         unsigned long long searches;
   8         unsigned long long entries;
   9 };
  10
  11 typedef struct name_value {
  12         avl avl;                                // the index - this has to be first!
  13
  14         uint32_t hash;                  // a simple hash to speed up searching
  15                                                         // we first compare hashes, and only if the hashes are equal we do string comparisons
  16
  17         char *name;
  18         void *value;
  19 } NAME_VALUE;
  20
  21 typedef struct dictionary {
  22         avl_tree values_index;
  23
  24         uint8_t flags;
  25
  26         struct dictionary_stats *stats;
  27         pthread_rwlock_t *rwlock;
  28 } DICTIONARY;
  29
  30 #define DICTIONARY_FLAG_DEFAULT                                 0x00000000
  31 #define DICTIONARY_FLAG_SINGLE_THREADED                 0x00000001
  32 #define DICTIONARY_FLAG_VALUE_LINK_DONT_CLONE   0x00000002
  33 #define DICTIONARY_FLAG_NAME_LINK_DONT_CLONE    0x00000004
  34 #define DICTIONARY_FLAG_WITH_STATISTICS                 0x00000008
  35
  36 extern DICTIONARY *dictionary_create(uint32_t flags);
  37 extern void dictionary_destroy(DICTIONARY *dict);
  38 extern void *dictionary_set(DICTIONARY *dict, const char *name, void *value, size_t value_len);
  39 extern void *dictionary_get(DICTIONARY *dict, const char *name);
  40 extern int dictionary_del(DICTIONARY *dict, const char *name);
  41
  42 extern int dictionary_get_all(DICTIONARY *dict, int (*callback)(void *entry, void *data), void *data);
  43
  44 #endif /* NETDATA_DICTIONARY_H */