2 * Copyright (C) 2006-2010 Brian Aker
5 * Use and distribution licensed under the BSD license. See
6 * the COPYING file in the parent directory for full text.
14 static const memcached_st global_copy
= {
17 .is_processing_input
= false,
18 .is_time_for_rebuild
= false,
21 .auto_eject_hosts
= false,
22 .binary_protocol
= false,
23 .buffer_requests
= false,
25 .hash_with_prefix_key
= false,
26 .ketama_weighted
= false,
29 .randomize_replica_read
= false,
33 .use_cache_lookups
= false,
34 .use_sort_hosts
= false,
37 .tcp_keepalive
= false,
38 .load_from_file
= false
43 static inline bool _memcached_init(memcached_st
*self
)
45 self
->state
= global_copy
.state
;
46 self
->flags
= global_copy
.flags
;
48 self
->distribution
= MEMCACHED_DISTRIBUTION_MODULA
;
51 hash_ptr
= hashkit_create(&self
->hashkit
);
55 self
->continuum_points_counter
= 0;
57 self
->number_of_hosts
= 0;
59 self
->last_disconnected_server
= NULL
;
63 self
->server_failure_limit
= 0;
65 /* TODO, Document why we picked these defaults */
66 self
->io_msg_watermark
= 500;
67 self
->io_bytes_watermark
= 65 * 1024;
69 self
->tcp_keepidle
= 0;
71 self
->io_key_prefetch
= 0;
72 self
->cached_errno
= 0;
73 self
->poll_timeout
= MEMCACHED_DEFAULT_TIMEOUT
;
74 self
->connect_timeout
= MEMCACHED_DEFAULT_CONNECT_TIMEOUT
;
75 self
->retry_timeout
= 0;
76 self
->continuum_count
= 0;
81 self
->user_data
= NULL
;
82 self
->next_distribution_rebuild
= 0;
83 self
->prefix_key_length
= 0;
84 self
->number_of_replicas
= 0;
85 hash_ptr
= hashkit_create(&self
->distribution_hashkit
);
88 self
->continuum
= NULL
;
90 self
->allocators
= memcached_allocators_return_default();
93 self
->on_cleanup
= NULL
;
94 self
->get_key_failure
= NULL
;
95 self
->delete_trigger
= NULL
;
96 self
->callbacks
= NULL
;
97 self
->sasl
.callbacks
= NULL
;
98 self
->sasl
.is_allocated
= false;
103 memcached_st
*memcached_create(memcached_st
*ptr
)
107 ptr
= (memcached_st
*)malloc(sizeof(memcached_st
));
111 return NULL
; /* MEMCACHED_MEMORY_ALLOCATION_FAILURE */
114 ptr
->options
.is_allocated
= true;
118 ptr
->options
.is_allocated
= false;
122 memcached_set_purging(ptr
, false);
123 memcached_set_processing_input(ptr
, false);
126 if (! _memcached_init(ptr
))
132 if (! memcached_result_create(ptr
, &ptr
->result
))
138 WATCHPOINT_ASSERT_INITIALIZED(&ptr
->result
);
143 void memcached_servers_reset(memcached_st
*ptr
)
145 memcached_server_list_free(memcached_server_list(ptr
));
147 memcached_server_list_set(ptr
, NULL
);
148 ptr
->number_of_hosts
= 0;
149 if (ptr
->last_disconnected_server
)
151 memcached_server_free(ptr
->last_disconnected_server
);
153 ptr
->last_disconnected_server
= NULL
;
154 ptr
->server_failure_limit
= 0;
157 void memcached_reset_last_disconnected_server(memcached_st
*ptr
)
159 if (ptr
->last_disconnected_server
)
161 memcached_server_free(ptr
->last_disconnected_server
);
162 ptr
->last_disconnected_server
= NULL
;
166 void memcached_free(memcached_st
*ptr
)
168 /* If we have anything open, lets close it now */
170 memcached_server_list_free(memcached_server_list(ptr
));
171 memcached_result_free(&ptr
->result
);
173 if (ptr
->last_disconnected_server
)
174 memcached_server_free(ptr
->last_disconnected_server
);
177 ptr
->on_cleanup(ptr
);
180 libmemcached_free(ptr
, ptr
->continuum
);
182 if (ptr
->sasl
.callbacks
)
184 #ifdef LIBMEMCACHED_WITH_SASL_SUPPORT
185 memcached_destroy_sasl_auth_data(ptr
);
189 if (memcached_is_allocated(ptr
))
191 libmemcached_free(ptr
, ptr
);
196 clone is the destination, while source is the structure to clone.
197 If source is NULL the call is the same as if a memcached_create() was
200 memcached_st
*memcached_clone(memcached_st
*clone
, const memcached_st
*source
)
202 memcached_return_t rc
= MEMCACHED_SUCCESS
;
203 memcached_st
*new_clone
;
206 return memcached_create(clone
);
208 if (clone
&& memcached_is_allocated(clone
))
213 new_clone
= memcached_create(clone
);
215 if (new_clone
== NULL
)
218 new_clone
->flags
= source
->flags
;
219 new_clone
->send_size
= source
->send_size
;
220 new_clone
->recv_size
= source
->recv_size
;
221 new_clone
->poll_timeout
= source
->poll_timeout
;
222 new_clone
->connect_timeout
= source
->connect_timeout
;
223 new_clone
->retry_timeout
= source
->retry_timeout
;
224 new_clone
->distribution
= source
->distribution
;
226 hashkit_st
*hash_ptr
;
228 hash_ptr
= hashkit_clone(&new_clone
->hashkit
, &source
->hashkit
);
231 memcached_free(new_clone
);
235 hash_ptr
= hashkit_clone(&new_clone
->distribution_hashkit
, &source
->distribution_hashkit
);
238 memcached_free(new_clone
);
242 new_clone
->user_data
= source
->user_data
;
244 new_clone
->snd_timeout
= source
->snd_timeout
;
245 new_clone
->rcv_timeout
= source
->rcv_timeout
;
247 new_clone
->on_clone
= source
->on_clone
;
248 new_clone
->on_cleanup
= source
->on_cleanup
;
250 new_clone
->allocators
= source
->allocators
;
252 new_clone
->get_key_failure
= source
->get_key_failure
;
253 new_clone
->delete_trigger
= source
->delete_trigger
;
254 new_clone
->server_failure_limit
= source
->server_failure_limit
;
255 new_clone
->io_msg_watermark
= source
->io_msg_watermark
;
256 new_clone
->io_bytes_watermark
= source
->io_bytes_watermark
;
257 new_clone
->io_key_prefetch
= source
->io_key_prefetch
;
258 new_clone
->number_of_replicas
= source
->number_of_replicas
;
259 new_clone
->tcp_keepidle
= source
->tcp_keepidle
;
261 if (memcached_server_count(source
))
262 rc
= memcached_push(new_clone
, source
);
264 if (rc
!= MEMCACHED_SUCCESS
)
266 memcached_free(new_clone
);
272 if (source
->prefix_key_length
)
274 strcpy(new_clone
->prefix_key
, source
->prefix_key
);
275 new_clone
->prefix_key_length
= source
->prefix_key_length
;
278 #ifdef LIBMEMCACHED_WITH_SASL_SUPPORT
279 if (source
->sasl
.callbacks
)
281 if (memcached_clone_sasl(new_clone
, source
) != MEMCACHED_SUCCESS
)
283 memcached_free(new_clone
);
289 rc
= run_distribution(new_clone
);
291 if (rc
!= MEMCACHED_SUCCESS
)
293 memcached_free(new_clone
);
298 if (source
->on_clone
)
299 source
->on_clone(new_clone
, source
);
304 void *memcached_get_user_data(const memcached_st
*ptr
)
306 return ptr
->user_data
;
309 void *memcached_set_user_data(memcached_st
*ptr
, void *data
)
311 void *ret
= ptr
->user_data
;
312 ptr
->user_data
= data
;
317 memcached_return_t
memcached_push(memcached_st
*destination
, const memcached_st
*source
)
319 return memcached_server_push(destination
, source
->servers
);
322 memcached_server_write_instance_st
memcached_server_instance_fetch(memcached_st
*ptr
, uint32_t server_key
)
324 return &ptr
->servers
[server_key
];
327 memcached_server_instance_st
memcached_server_instance_by_position(const memcached_st
*ptr
, uint32_t server_key
)
329 return &ptr
->servers
[server_key
];