2 * Summary: interface for memcached server
3 * Description: main include file for libmemcached
5 * Copy: See Copyright for the status of this software.
10 #ifndef __MEMCACHED_H__
11 #define __MEMCACHED_H__
15 #include <sys/types.h>
21 typedef struct memcached_st memcached_st
;
22 typedef struct memcached_stat_st memcached_stat_st
;
23 typedef struct memcached_string_st memcached_string_st
;
24 typedef struct memcached_server_st memcached_server_st
;
26 #define MEMCACHED_DEFAULT_PORT 11211
27 #define MEMCACHED_DEFAULT_COMMAND_SIZE 350
28 #define SMALL_STRING_LEN 1024
29 #define HUGE_STRING_LEN 8196
30 #define MEMCACHED_MAX_KEY 251 /* We add one to have it null terminated */
31 //#define MEMCACHED_MAX_BUFFER 8196
32 #define MEMCACHED_MAX_BUFFER HUGE_STRING_LEN
37 MEMCACHED_HOST_LOCKUP_FAILURE
,
38 MEMCACHED_CONNECTION_FAILURE
,
39 MEMCACHED_CONNECTION_BIND_FAILURE
,
40 MEMCACHED_WRITE_FAILURE
,
41 MEMCACHED_READ_FAILURE
,
42 MEMCACHED_UNKNOWN_READ_FAILURE
,
43 MEMCACHED_PROTOCOL_ERROR
,
44 MEMCACHED_CLIENT_ERROR
,
45 MEMCACHED_SERVER_ERROR
,
46 MEMCACHED_CONNECTION_SOCKET_CREATE_FAILURE
,
47 MEMCACHED_DATA_EXISTS
,
48 MEMCACHED_DATA_DOES_NOT_EXIST
,
52 MEMCACHED_MEMORY_ALLOCATION_FAILURE
,
53 MEMCACHED_PARTIAL_READ
,
54 MEMCACHED_SOME_ERRORS
,
61 MEMCACHED_FAIL_UNIX_SOCKET
,
62 MEMCACHED_NOT_SUPPORTED
,
63 MEMCACHED_MAXIMUM_RETURN
, /* Always add new error code before */
67 MEMCACHED_BEHAVIOR_NO_BLOCK
,
68 MEMCACHED_BEHAVIOR_TCP_NODELAY
,
69 MEMCACHED_BEHAVIOR_HASH
,
70 MEMCACHED_BEHAVIOR_KETAMA
,
71 MEMCACHED_BEHAVIOR_SOCKET_SEND_SIZE
,
72 MEMCACHED_BEHAVIOR_SOCKET_RECV_SIZE
,
76 MEMCACHED_HASH_DEFAULT
= 0,
82 MEMCACHED_CONNECTION_UNKNOWN
,
83 MEMCACHED_CONNECTION_TCP
,
84 MEMCACHED_CONNECTION_UDP
,
85 MEMCACHED_CONNECTION_UNIX_SOCKET
,
86 } memcached_connection
;
89 MEMCACHED_NOT_ALLOCATED
= 0,
90 MEMCACHED_ALLOCATED
= 1,
91 } memcached_allocated
;
93 struct memcached_server_st
{
97 unsigned int stack_responses
;
98 unsigned int cursor_active
;
99 memcached_connection type
;
102 struct memcached_stat_st
{
105 unsigned int threads
;
108 unsigned int pointer_size
;
109 unsigned int rusage_user
;
110 unsigned int rusage_system
;
111 unsigned int rusage_user_seconds
;
112 unsigned int rusage_user_microseconds
;
113 unsigned int rusage_system_seconds
;
114 unsigned int rusage_system_microseconds
;
115 unsigned int curr_items
;
116 unsigned int total_items
;
117 unsigned long long bytes
;
118 unsigned int curr_connections
;
119 unsigned int total_connections
;
120 unsigned int connection_structures
;
121 unsigned long long cmd_get
;
122 unsigned long long cmd_set
;
123 unsigned long long get_hits
;
124 unsigned long long get_misses
;
125 unsigned long long evictions
;
126 unsigned long long bytes_read
;
127 unsigned long long bytes_written
;
128 unsigned int limit_maxbytes
;
131 struct memcached_string_st
{
138 struct memcached_st
{
139 memcached_allocated is_allocated
;
140 memcached_server_st
*hosts
;
141 unsigned int number_of_hosts
;
142 unsigned int cursor_server
;
143 char read_buffer
[MEMCACHED_MAX_BUFFER
];
144 size_t read_buffer_length
;
146 char write_buffer
[MEMCACHED_MAX_BUFFER
];
147 size_t write_buffer_offset
;
150 unsigned long long flags
;
154 memcached_return warning
; /* Future Use */
158 memcached_st
*memcached_create(memcached_st
*ptr
);
159 void memcached_free(memcached_st
*ptr
);
160 memcached_st
*memcached_clone(memcached_st
*clone
, memcached_st
*ptr
);
162 memcached_return
memcached_delete(memcached_st
*ptr
, char *key
, size_t key_length
,
164 memcached_return
memcached_increment(memcached_st
*ptr
,
165 char *key
, size_t key_length
,
167 unsigned int *value
);
168 memcached_return
memcached_decrement(memcached_st
*ptr
,
169 char *key
, size_t key_length
,
171 unsigned int *value
);
172 memcached_stat_st
*memcached_stat(memcached_st
*ptr
, char *args
, memcached_return
*error
);
173 memcached_return
memcached_stat_servername(memcached_stat_st
*stat
, char *args
,
174 char *hostname
, unsigned int port
);
175 memcached_return
memcached_flush(memcached_st
*ptr
, time_t expiration
);
176 memcached_return
memcached_verbosity(memcached_st
*ptr
, unsigned int verbosity
);
177 void memcached_quit(memcached_st
*ptr
);
178 char *memcached_strerror(memcached_st
*ptr
, memcached_return rc
);
179 memcached_return
memcached_behavior_set(memcached_st
*ptr
, memcached_behavior flag
, void *data
);
180 unsigned long long memcached_behavior_get(memcached_st
*ptr
, memcached_behavior flag
);
182 /* All of the functions for adding data to the server */
183 memcached_return
memcached_set(memcached_st
*ptr
, char *key
, size_t key_length
,
184 char *value
, size_t value_length
,
187 memcached_return
memcached_add(memcached_st
*ptr
, char *key
, size_t key_length
,
188 char *value
, size_t value_length
,
191 memcached_return
memcached_replace(memcached_st
*ptr
, char *key
, size_t key_length
,
192 char *value
, size_t value_length
,
197 char *memcached_get(memcached_st
*ptr
, char *key
, size_t key_length
,
198 size_t *value_length
,
200 memcached_return
*error
);
201 memcached_return
memcached_mget(memcached_st
*ptr
,
202 char **keys
, size_t *key_length
,
203 unsigned int number_of_keys
);
204 char *memcached_fetch(memcached_st
*ptr
, char *key
, size_t *key_length
,
205 size_t *value_length
, uint16_t *flags
,
206 memcached_return
*error
);
208 /* Server Public functions */
209 #define memcached_server_count(A) A->number_of_hosts
210 #define memcached_server_name(A,B) B.hostname
211 #define memcached_server_port(A,B) B.port
212 #define memcached_server_list(A) A->hosts
213 #define memcached_server_response_count(A,B) A->hosts[B].stack_responses
215 memcached_return
memcached_server_add_unix_socket(memcached_st
*ptr
,
217 memcached_return
memcached_server_add(memcached_st
*ptr
, char *hostname
,
219 void memcached_server_list_free(memcached_server_st
*ptr
);
220 memcached_return
memcached_server_push(memcached_st
*ptr
, memcached_server_st
*list
);
222 memcached_server_st
*memcached_server_list_append(memcached_server_st
*ptr
,
223 char *hostname
, unsigned int port
,
224 memcached_return
*error
);
225 unsigned int memcached_server_list_count(memcached_server_st
*ptr
);
226 memcached_server_st
*memcached_servers_parse(char *server_strings
);
228 char *memcached_stat_get_value(memcached_st
*ptr
, memcached_stat_st
*stat
,
229 char *key
, memcached_return
*error
);
230 char ** memcached_stat_get_keys(memcached_st
*ptr
, memcached_stat_st
*stat
,
231 memcached_return
*error
);
233 /* Some personal debugging functions */
235 #define WATCHPOINT fprintf(stderr, "\nWATCHPOINT %s:%d (%s)\n", __FILE__, __LINE__,__func__);fflush(stdout);
236 #define WATCHPOINT_ERROR(A) fprintf(stderr, "\nWATCHPOINT %s:%d %s\n", __FILE__, __LINE__, memcached_strerror(NULL, A));fflush(stdout);
237 #define WATCHPOINT_STRING(A) fprintf(stderr, "\nWATCHPOINT %s:%d (%s) %s\n", __FILE__, __LINE__,__func__,A);fflush(stdout);
238 #define WATCHPOINT_NUMBER(A) fprintf(stderr, "\nWATCHPOINT %s:%d (%s) %zu\n", __FILE__, __LINE__,__func__,(size_t)(A));fflush(stdout);
239 #define WATCHPOINT_ERRNO(A) fprintf(stderr, "\nWATCHPOINT %s:%d (%s) %s\n", __FILE__, __LINE__,__func__, strerror(A));A= 0;fflush(stdout);
240 #define WATCHPOINT_ASSERT(A) assert((A));
243 #define WATCHPOINT { 1; };
244 #define WATCHPOINT_ERROR(A) { 1; };
245 #define WATCHPOINT_STRING(A) { 1; };
246 #define WATCHPOINT_NUMBER(A) { 1; };
247 #define WATCHPOINT_ERRNO(A) { 1; };
248 #define WATCHPOINT_ASSERT(A) { 1; };
251 #define WATCHPOINT_ERROR(A)
252 #define WATCHPOINT_STRING(A)
253 #define WATCHPOINT_NUMBER(A)
254 #define WATCHPOINT_ERRNO(A)
255 #define WATCHPOINT_ASSERT(A)
263 #endif /* __MEMCACHED_H__ */