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         char *name;
  15         void *value;
  16 } NAME_VALUE;
  17
  18 typedef struct dictionary {
  19         uint32_t flags;
  20
  21         unsigned long long inserts;
  22         unsigned long long deletes;
  23         unsigned long long searches;
  24         unsigned long long entries;
  25
  26         avl_tree values_index;
  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
  35 extern DICTIONARY *dictionary_create(uint32_t flags);
  36 extern void dictionary_destroy(DICTIONARY *dict);
  37 extern void *dictionary_set(DICTIONARY *dict, const char *name, void *value, size_t value_len);
  38 extern void *dictionary_get(DICTIONARY *dict, const char *name);
  39 extern void dictionary_del(DICTIONARY *dict, const char *name);
  40
  41 #endif /* NETDATA_DICTIONARY_H */