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         uint32_t flags;
  21
  22         unsigned long long inserts;
  23         unsigned long long deletes;
  24         unsigned long long searches;
  25         unsigned long long entries;
  26
  27         avl_tree values_index;
  28         pthread_rwlock_t rwlock;
  29         pthread_mutex_t atomic_mutex;
  30 } DICTIONARY;
  31
  32 #define DICTIONARY_FLAG_DEFAULT                                 0x00000000
  33 #define DICTIONARY_FLAG_SINGLE_THREADED                 0x00000001
  34 #define DICTIONARY_FLAG_VALUE_LINK_DONT_CLONE   0x00000002
  35 #define DICTIONARY_FLAG_NAME_LINK_DONT_CLONE    0x00000004
  36
  37 extern DICTIONARY *dictionary_create(uint32_t flags);
  38 extern void dictionary_destroy(DICTIONARY *dict);
  39 extern void *dictionary_set(DICTIONARY *dict, const char *name, void *value, size_t value_len);
  40 extern void *dictionary_get(DICTIONARY *dict, const char *name);
  41 extern int dictionary_del(DICTIONARY *dict, const char *name);
  42
  43 extern int dictionary_get_all(DICTIONARY *dict, int (*callback)(void *entry, void *data), void *data);
  44
  45 #endif /* NETDATA_DICTIONARY_H */