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   1 /*
   2  * Summary: interface for memcached server
   3  * Description: main include file for libmemcached
   4  *
   5  * Copy: See Copyright for the status of this software.
   6  *
   7  * Author: Brian Aker
   8  */
   9
  10 #ifndef __MEMCACHED_H__
  11 #define __MEMCACHED_H__
  12
  13 #include <stdlib.h>
  14 #include <inttypes.h>
  15 #if !defined(__cplusplus)
  16 # include <stdbool.h>
  17 #endif
  18 #include <sys/types.h>
  19 #include <netinet/in.h>
  20
  21 #ifdef MEMCACHED_INTERNAL
  22 #include <libmemcached/libmemcached_config.h>
  23 #endif
  24 #include <libmemcached/memcached_constants.h>
  25 #include <libmemcached/memcached_types.h>
  26 #include <libmemcached/memcached_watchpoint.h>
  27 #include <libmemcached/memcached_get.h>
  28 #include <libmemcached/memcached_server.h>
  29 #include <libmemcached/memcached_string.h>
  30 #include <libmemcached/memcached_result.h>
  31
  32 #ifdef __cplusplus
  33 extern "C" {
  34 #endif
  35
  36 /* These are Private and should not be used by applications */
  37 #define MEMCACHED_VERSION_STRING_LENGTH 24
  38
  39 /* string value */
  40 struct memcached_continuum_item_st {
  41   uint32_t index;
  42   uint32_t value;
  43 };
  44
  45 #define LIBMEMCACHED_VERSION_STRING "0.30"
  46
  47 struct memcached_analysis_st {
  48   uint32_t average_item_size;
  49   uint32_t longest_uptime;
  50   uint32_t least_free_server;
  51   uint32_t most_consumed_server;
  52   uint32_t oldest_server;
  53   double pool_hit_ratio;
  54   uint64_t most_used_bytes;
  55   uint64_t least_remaining_bytes;
  56 };
  57
  58 struct memcached_stat_st {
  59   uint32_t connection_structures;
  60   uint32_t curr_connections;
  61   uint32_t curr_items;
  62   uint32_t pid;
  63   uint32_t pointer_size;
  64   uint32_t rusage_system_microseconds;
  65   uint32_t rusage_system_seconds;
  66   uint32_t rusage_user_microseconds;
  67   uint32_t rusage_user_seconds;
  68   uint32_t threads;
  69   uint32_t time;
  70   uint32_t total_connections;
  71   uint32_t total_items;
  72   uint32_t uptime;
  73   uint64_t bytes;
  74   uint64_t bytes_read;
  75   uint64_t bytes_written;
  76   uint64_t cmd_get;
  77   uint64_t cmd_set;
  78   uint64_t evictions;
  79   uint64_t get_hits;
  80   uint64_t get_misses;
  81   uint64_t limit_maxbytes;
  82   char version[MEMCACHED_VERSION_STRING_LENGTH];
  83 };
  84
  85 struct memcached_st {
  86   uint8_t purging;
  87   bool is_allocated;
  88   uint8_t distribution;
  89   uint8_t hash;
  90   uint32_t continuum_points_counter;
  91   memcached_server_st *hosts;
  92   int32_t snd_timeout;
  93   int32_t rcv_timeout;
  94   uint32_t server_failure_limit;
  95   uint32_t io_msg_watermark;
  96   uint32_t io_bytes_watermark;
  97   uint32_t io_key_prefetch;
  98   uint32_t number_of_hosts;
  99   uint32_t cursor_server;
 100   int cached_errno;
 101   uint32_t flags;
 102   int32_t poll_timeout;
 103   int32_t connect_timeout;
 104   int32_t retry_timeout;
 105   uint32_t continuum_count;
 106   int send_size;
 107   int recv_size;
 108   void *user_data;
 109   time_t next_distribution_rebuild;
 110   size_t prefix_key_length;
 111   memcached_hash hash_continuum;
 112   memcached_result_st result;
 113   memcached_continuum_item_st *continuum;
 114   memcached_clone_func on_clone;
 115   memcached_cleanup_func on_cleanup;
 116   memcached_free_function call_free;
 117   memcached_malloc_function call_malloc;
 118   memcached_realloc_function call_realloc;
 119   memcached_calloc_function call_calloc;
 120   memcached_trigger_key get_key_failure;
 121   memcached_trigger_delete_key delete_trigger;
 122   char prefix_key[MEMCACHED_PREFIX_KEY_MAX_SIZE];
 123 };
 124
 125
 126 /* Public API */
 127 const char * memcached_lib_version(void);
 128
 129 memcached_st *memcached_create(memcached_st *ptr);
 130 void memcached_free(memcached_st *ptr);
 131 memcached_st *memcached_clone(memcached_st *clone, memcached_st *ptr);
 132
 133 memcached_return memcached_delete(memcached_st *ptr, const char *key, size_t key_length,
 134                                   time_t expiration);
 135 memcached_return memcached_increment(memcached_st *ptr,
 136                                      const char *key, size_t key_length,
 137                                      uint32_t offset,
 138                                      uint64_t *value);
 139 memcached_return memcached_decrement(memcached_st *ptr,
 140                                      const char *key, size_t key_length,
 141                                      uint32_t offset,
 142                                      uint64_t *value);
 143 memcached_return memcached_increment_with_initial(memcached_st *ptr,
 144                                                   const char *key,
 145                                                   size_t key_length,
 146                                                   uint64_t offset,
 147                                                   uint64_t initial,
 148                                                   time_t expiration,
 149                                                   uint64_t *value);
 150 memcached_return memcached_decrement_with_initial(memcached_st *ptr,
 151                                                   const char *key,
 152                                                   size_t key_length,
 153                                                   uint64_t offset,
 154                                                   uint64_t initial,
 155                                                   time_t expiration,
 156                                                   uint64_t *value);
 157 void memcached_stat_free(memcached_st *, memcached_stat_st *);
 158 memcached_stat_st *memcached_stat(memcached_st *ptr, char *args, memcached_return *error);
 159 memcached_return memcached_stat_servername(memcached_stat_st *stat, char *args,
 160                                            char *hostname, unsigned int port);
 161 memcached_return memcached_flush(memcached_st *ptr, time_t expiration);
 162 memcached_return memcached_verbosity(memcached_st *ptr, unsigned int verbosity);
 163 void memcached_quit(memcached_st *ptr);
 164 char *memcached_strerror(memcached_st *ptr, memcached_return rc);
 165 memcached_return memcached_behavior_set(memcached_st *ptr, memcached_behavior flag, uint64_t data);
 166 uint64_t memcached_behavior_get(memcached_st *ptr, memcached_behavior flag);
 167
 168 /* The two public hash bits */
 169 uint32_t memcached_generate_hash_value(const char *key, size_t key_length, memcached_hash hash_algorithm);
 170 uint32_t memcached_generate_hash(memcached_st *ptr, const char *key, size_t key_length);
 171
 172 memcached_return memcached_flush_buffers(memcached_st *mem);
 173
 174 /* Server Public functions */
 175
 176 memcached_return memcached_server_add_udp(memcached_st *ptr,
 177                                           const char *hostname,
 178                                           unsigned int port);
 179 memcached_return memcached_server_add_unix_socket(memcached_st *ptr,
 180                                                   const char *filename);
 181 memcached_return memcached_server_add(memcached_st *ptr, const char *hostname,
 182                                       unsigned int port);
 183
 184 memcached_return memcached_server_add_udp_with_weight(memcached_st *ptr,
 185                                                       const char *hostname,
 186                                                       unsigned int port,
 187                                                       uint32_t weight);
 188 memcached_return memcached_server_add_unix_socket_with_weight(memcached_st *ptr,
 189                                                               const char *filename,
 190                                                               uint32_t weight);
 191 memcached_return memcached_server_add_with_weight(memcached_st *ptr, const char *hostname,
 192                                                   unsigned int port,
 193                                                   uint32_t weight);
 194 void memcached_server_list_free(memcached_server_st *ptr);
 195 memcached_return memcached_server_push(memcached_st *ptr, memcached_server_st *list);
 196
 197 memcached_server_st *memcached_server_list_append(memcached_server_st *ptr,
 198                                                   const char *hostname,
 199                                                   unsigned int port,
 200                                                   memcached_return *error);
 201 memcached_server_st *memcached_server_list_append_with_weight(memcached_server_st *ptr,
 202                                                               const char *hostname,
 203                                                               unsigned int port,
 204                                                               uint32_t weight,
 205                                                               memcached_return *error);
 206 unsigned int memcached_server_list_count(memcached_server_st *ptr);
 207 memcached_server_st *memcached_servers_parse(const char *server_strings);
 208
 209 char *memcached_stat_get_value(memcached_st *ptr, memcached_stat_st *stat,
 210                                const char *key, memcached_return *error);
 211 char ** memcached_stat_get_keys(memcached_st *ptr, memcached_stat_st *stat,
 212                                 memcached_return *error);
 213
 214 memcached_return memcached_delete_by_key(memcached_st *ptr,
 215                                          const char *master_key, size_t master_key_length,
 216                                          const char *key, size_t key_length,
 217                                          time_t expiration);
 218
 219 memcached_return memcached_fetch_execute(memcached_st *ptr,
 220                                              memcached_execute_function *callback,
 221                                              void *context,
 222                                              unsigned int number_of_callbacks);
 223
 224 memcached_return memcached_callback_set(memcached_st *ptr,
 225                                         memcached_callback flag,
 226                                         void *data);
 227 void *memcached_callback_get(memcached_st *ptr,
 228                              memcached_callback flag,
 229                              memcached_return *error);
 230
 231 memcached_return memcached_dump(memcached_st *ptr, memcached_dump_func *function, void *context, uint32_t number_of_callbacks);
 232
 233
 234 memcached_return memcached_set_memory_allocators(memcached_st *ptr,
 235                                                  memcached_malloc_function mem_malloc,
 236                                                  memcached_free_function mem_free,
 237                                                  memcached_realloc_function mem_realloc,
 238                                                  memcached_calloc_function mem_calloc);
 239
 240 void memcached_get_memory_allocators(memcached_st *ptr,
 241                                      memcached_malloc_function *mem_malloc,
 242                                      memcached_free_function *mem_free,
 243                                      memcached_realloc_function *mem_realloc,
 244                                      memcached_calloc_function *mem_calloc);
 245
 246 void *memcached_get_user_data(memcached_st *ptr);
 247 void *memcached_set_user_data(memcached_st *ptr, void *data);
 248
 249 #ifdef __cplusplus
 250 }
 251 #endif
 252
 253 #include <libmemcached/memcached_storage.h>
 254
 255 #ifdef MEMCACHED_INTERNAL
 256 #include <libmemcached/memcached_internal.h>
 257 #endif
 258
 259 #endif /* __MEMCACHED_H__ */