git.m6w6.name Git - awesomized/libmemcached/blob - include/memcached.h

   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 <stdint.h>
  15 #include <sys/types.h>
  16 #include <netinet/in.h>
  17
  18 #ifdef __cplusplus
  19 extern "C" {
  20 #endif
  21
  22 typedef struct memcached_st memcached_st;
  23 typedef struct memcached_stat_st memcached_stat_st;
  24 typedef struct memcached_result_st memcached_result_st;
  25 typedef struct memcached_string_st memcached_string_st;
  26 typedef struct memcached_server_st memcached_server_st;
  27
  28 #define MEMCACHED_VERSION_STRING 12
  29 #define MEMCACHED_DEFAULT_PORT 11211
  30 #define MEMCACHED_DEFAULT_COMMAND_SIZE 350
  31 #define SMALL_STRING_LEN 1024
  32 #define HUGE_STRING_LEN 8196
  33 #define MEMCACHED_MAX_KEY 251 /* We add one to have it null terminated */
  34 #define MEMCACHED_MAX_BUFFER HUGE_STRING_LEN
  35
  36 typedef enum {
  37   MEMCACHED_SUCCESS,
  38   MEMCACHED_FAILURE,
  39   MEMCACHED_HOST_LOOKUP_FAILURE,
  40   MEMCACHED_CONNECTION_FAILURE,
  41   MEMCACHED_CONNECTION_BIND_FAILURE,
  42   MEMCACHED_WRITE_FAILURE,
  43   MEMCACHED_READ_FAILURE,
  44   MEMCACHED_UNKNOWN_READ_FAILURE,
  45   MEMCACHED_PROTOCOL_ERROR,
  46   MEMCACHED_CLIENT_ERROR,
  47   MEMCACHED_SERVER_ERROR,
  48   MEMCACHED_CONNECTION_SOCKET_CREATE_FAILURE,
  49   MEMCACHED_DATA_EXISTS,
  50   MEMCACHED_DATA_DOES_NOT_EXIST,
  51   MEMCACHED_NOTSTORED,
  52   MEMCACHED_STORED,
  53   MEMCACHED_NOTFOUND,
  54   MEMCACHED_MEMORY_ALLOCATION_FAILURE,
  55   MEMCACHED_PARTIAL_READ,
  56   MEMCACHED_SOME_ERRORS,
  57   MEMCACHED_NO_SERVERS,
  58   MEMCACHED_END,
  59   MEMCACHED_DELETED,
  60   MEMCACHED_VALUE,
  61   MEMCACHED_STAT,
  62   MEMCACHED_ERRNO,
  63   MEMCACHED_FAIL_UNIX_SOCKET,
  64   MEMCACHED_NOT_SUPPORTED,
  65   MEMCACHED_NO_KEY_PROVIDED,
  66   MEMCACHED_MAXIMUM_RETURN, /* Always add new error code before */
  67 } memcached_return;
  68
  69 typedef enum {
  70   MEMCACHED_BEHAVIOR_NO_BLOCK,
  71   MEMCACHED_BEHAVIOR_TCP_NODELAY,
  72   MEMCACHED_BEHAVIOR_HASH,
  73   MEMCACHED_BEHAVIOR_KETAMA,
  74   MEMCACHED_BEHAVIOR_SOCKET_SEND_SIZE,
  75   MEMCACHED_BEHAVIOR_SOCKET_RECV_SIZE,
  76   MEMCACHED_BEHAVIOR_CACHE_LOOKUPS,
  77   MEMCACHED_BEHAVIOR_SUPPORT_CAS,
  78 } memcached_behavior;
  79
  80 typedef enum {
  81   MEMCACHED_HASH_DEFAULT= 0,
  82   MEMCACHED_HASH_MD5,
  83   MEMCACHED_HASH_CRC,
  84   MEMCACHED_HASH_FNV1_64,
  85   MEMCACHED_HASH_FNV1A_64,
  86   MEMCACHED_HASH_FNV1_32,
  87   MEMCACHED_HASH_FNV1A_32,
  88   MEMCACHED_HASH_KETAMA,
  89 } memcached_hash;
  90
  91 typedef enum {
  92   MEMCACHED_CONNECTION_UNKNOWN,
  93   MEMCACHED_CONNECTION_TCP,
  94   MEMCACHED_CONNECTION_UDP,
  95   MEMCACHED_CONNECTION_UNIX_SOCKET,
  96 } memcached_connection;
  97
  98 typedef enum {
  99   MEMCACHED_NOT_ALLOCATED,
 100   MEMCACHED_ALLOCATED,
 101 } memcached_allocated;
 102
 103 struct memcached_server_st {
 104   char *hostname;
 105   unsigned int port;
 106   int fd;
 107   unsigned int stack_responses;
 108   unsigned int cursor_active;
 109   char write_buffer[MEMCACHED_MAX_BUFFER];
 110   size_t write_buffer_offset;
 111   char *write_ptr;
 112   char read_buffer[MEMCACHED_MAX_BUFFER];
 113   size_t read_buffer_length;
 114   char *read_ptr;
 115   memcached_allocated sockaddr_inited;
 116   struct sockaddr_in servAddr;
 117   memcached_connection type;
 118   uint8_t major_version;
 119   uint8_t minor_version;
 120   uint8_t micro_version;
 121 };
 122
 123 struct memcached_stat_st {
 124   unsigned int pid;
 125   unsigned int uptime;
 126   unsigned int threads;
 127   time_t time;
 128   char version[MEMCACHED_VERSION_STRING];
 129   unsigned int pointer_size;
 130   unsigned int rusage_user;
 131   unsigned int rusage_system;
 132   unsigned int rusage_user_seconds;
 133   unsigned int rusage_user_microseconds;
 134   unsigned int rusage_system_seconds;
 135   unsigned int rusage_system_microseconds;
 136   unsigned int curr_items;
 137   unsigned int total_items;
 138   unsigned long long bytes;
 139   unsigned int curr_connections;
 140   unsigned int total_connections;
 141   unsigned int connection_structures;
 142   unsigned long long cmd_get;
 143   unsigned long long cmd_set;
 144   unsigned long long get_hits;
 145   unsigned long long get_misses;
 146   unsigned long long evictions;
 147   unsigned long long bytes_read;
 148   unsigned long long bytes_written;
 149   unsigned int limit_maxbytes;
 150 };
 151
 152 struct memcached_string_st {
 153   memcached_st *root;
 154   memcached_allocated is_allocated;
 155   char *string;
 156   char *end;
 157   size_t current_size;
 158   size_t block_size;
 159 };
 160
 161 struct memcached_result_st {
 162   memcached_allocated is_allocated;
 163   memcached_st *root;
 164   char key[MEMCACHED_MAX_KEY];
 165   size_t key_length;
 166   memcached_string_st value;
 167   uint16_t flags;
 168   uint64_t cas;
 169 };
 170
 171 struct memcached_st {
 172   memcached_allocated is_allocated;
 173   memcached_server_st *hosts;
 174   unsigned int number_of_hosts;
 175   unsigned int cursor_server;
 176   char connected;
 177   int cached_errno;
 178   unsigned long long flags;
 179   int send_size;
 180   int recv_size;
 181   memcached_string_st result_buffer;
 182   memcached_hash hash;
 183   memcached_return warning; /* Future Use */
 184 };
 185
 186 /* Public API */
 187 memcached_st *memcached_create(memcached_st *ptr);
 188 void memcached_free(memcached_st *ptr);
 189 memcached_st *memcached_clone(memcached_st *clone, memcached_st *ptr);
 190
 191 memcached_return memcached_delete(memcached_st *ptr, char *key, size_t key_length,
 192                                   time_t expiration);
 193 memcached_return memcached_increment(memcached_st *ptr,
 194                                      char *key, size_t key_length,
 195                                      uint32_t offset,
 196                                      uint64_t *value);
 197 memcached_return memcached_decrement(memcached_st *ptr,
 198                                      char *key, size_t key_length,
 199                                      uint32_t offset,
 200                                      uint64_t *value);
 201 void memcached_stat_free(memcached_st *, memcached_stat_st *);
 202 memcached_stat_st *memcached_stat(memcached_st *ptr, char *args, memcached_return *error);
 203 memcached_return memcached_stat_servername(memcached_stat_st *stat, char *args,
 204                                            char *hostname, unsigned int port);
 205 memcached_return memcached_flush(memcached_st *ptr, time_t expiration);
 206 memcached_return memcached_verbosity(memcached_st *ptr, unsigned int verbosity);
 207 void memcached_quit(memcached_st *ptr);
 208 char *memcached_strerror(memcached_st *ptr, memcached_return rc);
 209 memcached_return memcached_behavior_set(memcached_st *ptr, memcached_behavior flag, void *data);
 210 unsigned long long memcached_behavior_get(memcached_st *ptr, memcached_behavior flag);
 211
 212 /* All of the functions for adding data to the server */
 213 memcached_return memcached_set(memcached_st *ptr, char *key, size_t key_length,
 214                                char *value, size_t value_length,
 215                                time_t expiration,
 216                                uint16_t  flags);
 217 memcached_return memcached_add(memcached_st *ptr, char *key, size_t key_length,
 218                                char *value, size_t value_length,
 219                                time_t expiration,
 220                                uint16_t  flags);
 221 memcached_return memcached_replace(memcached_st *ptr, char *key, size_t key_length,
 222                                    char *value, size_t value_length,
 223                                    time_t expiration,
 224                                    uint16_t  flags);
 225 memcached_return memcached_append(memcached_st *ptr,
 226                                   char *key, size_t key_length,
 227                                   char *value, size_t value_length,
 228                                   time_t expiration,
 229                                   uint16_t flags);
 230 memcached_return memcached_prepend(memcached_st *ptr,
 231                                    char *key, size_t key_length,
 232                                    char *value, size_t value_length,
 233                                    time_t expiration,
 234                                    uint16_t flags);
 235 memcached_return memcached_cas(memcached_st *ptr,
 236                                char *key, size_t key_length,
 237                                char *value, size_t value_length,
 238                                time_t expiration,
 239                                uint16_t flags,
 240                                uint64_t cas);
 241
 242 /* Get functions */
 243 char *memcached_get(memcached_st *ptr, char *key, size_t key_length,
 244                     size_t *value_length,
 245                     uint16_t *flags,
 246                     memcached_return *error);
 247 memcached_return memcached_mget(memcached_st *ptr,
 248                                 char **keys, size_t *key_length,
 249                                 unsigned int number_of_keys);
 250 char *memcached_fetch(memcached_st *ptr, char *key, size_t *key_length,
 251                       size_t *value_length, uint16_t *flags,
 252                       memcached_return *error);
 253 memcached_result_st *memcached_fetch_result(memcached_st *ptr,
 254                                             memcached_result_st *result,
 255                                             memcached_return *error);
 256
 257 /* Server Public functions */
 258 #define memcached_server_count(A) A->number_of_hosts
 259 #define memcached_server_name(A,B) B.hostname
 260 #define memcached_server_port(A,B) B.port
 261 #define memcached_server_list(A) A->hosts
 262 #define memcached_server_response_count(A,B) A->hosts[B].stack_responses
 263
 264 memcached_return memcached_server_add_udp(memcached_st *ptr,
 265                                           char *hostname,
 266                                           unsigned int port);
 267 memcached_return memcached_server_add_unix_socket(memcached_st *ptr,
 268                                                   char *filename);
 269 memcached_return memcached_server_add(memcached_st *ptr, char *hostname,
 270                                       unsigned int port);
 271 void memcached_server_list_free(memcached_server_st *ptr);
 272 memcached_return memcached_server_push(memcached_st *ptr, memcached_server_st *list);
 273
 274 memcached_server_st *memcached_server_list_append(memcached_server_st *ptr,
 275                                              char *hostname, unsigned int port,
 276                                              memcached_return *error);
 277 unsigned int memcached_server_list_count(memcached_server_st *ptr);
 278 memcached_server_st *memcached_servers_parse(char *server_strings);
 279
 280 char *memcached_stat_get_value(memcached_st *ptr, memcached_stat_st *stat,
 281                                char *key, memcached_return *error);
 282 char ** memcached_stat_get_keys(memcached_st *ptr, memcached_stat_st *stat,
 283                                 memcached_return *error);
 284
 285 /* Result Struct */
 286 void memcached_result_free(memcached_result_st *result);
 287 memcached_result_st *memcached_result_create(memcached_st *ptr,
 288                                              memcached_result_st *result);
 289 #define memcached_result_key_value(A) A->key
 290 #define memcached_result_key_length(A) A->key_length
 291 #ifdef FIX
 292 #define memcached_result_value(A) memcached_string_value(A->value)
 293 #define memcached_result_length(A) memcached_string_length(A->value)
 294 #else
 295 char *memcached_result_value(memcached_result_st *ptr);
 296 size_t memcached_result_length(memcached_result_st *ptr);
 297 #endif
 298 #define memcached_result_flags(A) A->flags
 299 #define memcached_result_cas(A) A->cas
 300
 301
 302 #ifndef __WATCHPOINT_H__
 303 #define __WATCHPOINT_H__
 304 /* Some personal debugging functions */
 305 #ifdef HAVE_DEBUG
 306 #define WATCHPOINT fprintf(stderr, "\nWATCHPOINT %s:%d (%s)\n", __FILE__, __LINE__,__func__);fflush(stdout);
 307 #ifdef __MEMCACHED_H__
 308 #define WATCHPOINT_ERROR(A) fprintf(stderr, "\nWATCHPOINT %s:%d %s\n", __FILE__, __LINE__, memcached_strerror(NULL, A));fflush(stdout);
 309 #endif
 310 #define WATCHPOINT_STRING(A) fprintf(stderr, "\nWATCHPOINT %s:%d (%s) %s\n", __FILE__, __LINE__,__func__,A);fflush(stdout);
 311 #define WATCHPOINT_NUMBER(A) fprintf(stderr, "\nWATCHPOINT %s:%d (%s) %zu\n", __FILE__, __LINE__,__func__,(size_t)(A));fflush(stdout);
 312 #define WATCHPOINT_ERRNO(A) fprintf(stderr, "\nWATCHPOINT %s:%d (%s) %s\n", __FILE__, __LINE__,__func__, strerror(A));A= 0;fflush(stdout);
 313 #define WATCHPOINT_ASSERT(A) assert((A));
 314 #else
 315 /*
 316 #define WATCHPOINT { 1; };
 317 #define WATCHPOINT_ERROR(A) { 1; };
 318 #define WATCHPOINT_STRING(A) { 1; };
 319 #define WATCHPOINT_NUMBER(A) { 1; };
 320 #define WATCHPOINT_ERRNO(A) { 1; };
 321 #define WATCHPOINT_ASSERT(A) { 1; };
 322 */
 323 #define WATCHPOINT
 324 #ifdef __MEMCACHED_H__
 325 #define WATCHPOINT_ERROR(A)
 326 #endif
 327 #define WATCHPOINT_STRING(A)
 328 #define WATCHPOINT_NUMBER(A)
 329 #define WATCHPOINT_ERRNO(A)
 330 #define WATCHPOINT_ASSERT(A)
 331 #endif
 332
 333 #endif /* __WATCHPOINT_H__ */
 334
 335
 336 #ifdef __cplusplus
 337 }
 338 #endif
 339
 340 #endif /* __MEMCACHED_H__ */