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 typedef struct name_value {
  10         avl avl;                                // the index - this has to be first!
  11
  12         uint32_t hash;                  // a simple hash to speed up searching
  13                                                         // we first compare hashes, and only if the hashes are equal we do string comparisons
  14
  15         char *name;
  16         void *value;
  17 } NAME_VALUE;
  18
  19 typedef struct dictionary {
  20         avl_tree values_index;
  21
  22         uint8_t flags;
  23
  24 #ifdef NETDATA_DICTIONARY_WITH_STATISTICS
  25         unsigned long long inserts;
  26         unsigned long long deletes;
  27         unsigned long long searches;
  28         unsigned long long entries;
  29 #endif /* NETDATA_DICTIONARY_WITH_STATISTICS */
  30
  31         pthread_rwlock_t rwlock;
  32 } DICTIONARY;
  33
  34 #ifdef NETDATA_DICTIONARY_WITH_STATISTICS
  35 #define NETDATA_DICTIONARY_STATS_INSERTS_PLUS1(dict) (dict)->inserts++
  36 #define NETDATA_DICTIONARY_STATS_DELETES_PLUS1(dict) (dict)->deletes++
  37 #define NETDATA_DICTIONARY_STATS_SEARCHES_PLUS1(dict) (dict)->searches++
  38 #define NETDATA_DICTIONARY_STATS_ENTRIES_PLUS1(dict) (dict)->entries++
  39 #define NETDATA_DICTIONARY_STATS_ENTRIES_MINUS1(dict) (dict)->entries--
  40 #else /* NETDATA_DICTIONARY_WITH_STATISTICS */
  41 #define NETDATA_DICTIONARY_STATS_INSERTS_PLUS1(dict)
  42 #define NETDATA_DICTIONARY_STATS_DELETES_PLUS1(dict)
  43 #define NETDATA_DICTIONARY_STATS_SEARCHES_PLUS1(dict)
  44 #define NETDATA_DICTIONARY_STATS_ENTRIES_PLUS1(dict)
  45 #define NETDATA_DICTIONARY_STATS_ENTRIES_MINUS1(dict)
  46 #endif /* NETDATA_DICTIONARY_WITH_STATISTICS */
  47
  48 #define DICTIONARY_FLAG_DEFAULT                                 0x00000000
  49 #define DICTIONARY_FLAG_SINGLE_THREADED                 0x00000001
  50 #define DICTIONARY_FLAG_VALUE_LINK_DONT_CLONE   0x00000002
  51 #define DICTIONARY_FLAG_NAME_LINK_DONT_CLONE    0x00000004
  52
  53 extern DICTIONARY *dictionary_create(uint32_t flags);
  54 extern void dictionary_destroy(DICTIONARY *dict);
  55 extern void *dictionary_set(DICTIONARY *dict, const char *name, void *value, size_t value_len);
  56 extern void *dictionary_get(DICTIONARY *dict, const char *name);
  57 extern int dictionary_del(DICTIONARY *dict, const char *name);
  58
  59 extern int dictionary_get_all(DICTIONARY *dict, int (*callback)(void *entry, void *data), void *data);
  60
  61 #endif /* NETDATA_DICTIONARY_H */