src/dictionary.h

   1 #include <pthread.h>
   2
   3 #include "web_buffer.h"
   4 #include "avl.h"
   5
   6 #ifndef NETDATA_DICTIONARY_H
   7 #define NETDATA_DICTIONARY_H 1
   8
   9 struct dictionary_stats {
  10         unsigned long long inserts;
  11         unsigned long long deletes;
  12         unsigned long long searches;
  13         unsigned long long entries;
  14 };
  15
  16 typedef struct name_value {
  17         avl avl;                                // the index - this has to be first!
  18
  19         uint32_t hash;                  // a simple hash to speed up searching
  20                                                         // we first compare hashes, and only if the hashes are equal we do string comparisons
  21
  22         char *name;
  23         void *value;
  24 } NAME_VALUE;
  25
  26 typedef struct dictionary {
  27         avl_tree values_index;
  28
  29         uint8_t flags;
  30
  31         struct dictionary_stats *stats;
  32         pthread_rwlock_t *rwlock;
  33 } DICTIONARY;
  34
  35 #define DICTIONARY_FLAG_DEFAULT                                 0x00000000
  36 #define DICTIONARY_FLAG_SINGLE_THREADED                 0x00000001
  37 #define DICTIONARY_FLAG_VALUE_LINK_DONT_CLONE   0x00000002
  38 #define DICTIONARY_FLAG_NAME_LINK_DONT_CLONE    0x00000004
  39 #define DICTIONARY_FLAG_WITH_STATISTICS                 0x00000008
  40
  41 extern DICTIONARY *dictionary_create(uint32_t flags);
  42 extern void dictionary_destroy(DICTIONARY *dict);
  43 extern void *dictionary_set(DICTIONARY *dict, const char *name, void *value, size_t value_len);
  44 extern void *dictionary_get(DICTIONARY *dict, const char *name);
  45 extern int dictionary_del(DICTIONARY *dict, const char *name);
  46
  47 extern int dictionary_get_all(DICTIONARY *dict, int (*callback)(void *entry, void *data), void *data);
  48
  49 #endif /* NETDATA_DICTIONARY_H */