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,
41 static inline bool _memcached_init(memcached_st
*self
)
43 self
->state
= global_copy
.state
;
44 self
->flags
= global_copy
.flags
;
46 self
->distribution
= MEMCACHED_DISTRIBUTION_MODULA
;
49 hash_ptr
= hashkit_create(&self
->hashkit
);
53 self
->continuum_points_counter
= 0;
55 self
->number_of_hosts
= 0;
57 self
->last_disconnected_server
= NULL
;
61 self
->server_failure_limit
= 0;
63 /* TODO, Document why we picked these defaults */
64 self
->io_msg_watermark
= 500;
65 self
->io_bytes_watermark
= 65 * 1024;
67 self
->tcp_keepidle
= 0;
69 self
->io_key_prefetch
= 0;
70 self
->cached_errno
= 0;
71 self
->poll_timeout
= MEMCACHED_DEFAULT_TIMEOUT
;
72 self
->connect_timeout
= MEMCACHED_DEFAULT_TIMEOUT
;
73 self
->retry_timeout
= 0;
74 self
->continuum_count
= 0;
79 self
->user_data
= NULL
;
80 self
->next_distribution_rebuild
= 0;
81 self
->prefix_key_length
= 0;
82 self
->number_of_replicas
= 0;
83 hash_ptr
= hashkit_create(&self
->distribution_hashkit
);
86 self
->continuum
= NULL
;
88 self
->allocators
= memcached_allocators_return_default();
91 self
->on_cleanup
= NULL
;
92 self
->get_key_failure
= NULL
;
93 self
->delete_trigger
= NULL
;
94 self
->callbacks
= NULL
;
95 #ifdef LIBMEMCACHED_WITH_SASL_SUPPORT
96 self
->sasl
.callbacks
= NULL
;
97 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_free(memcached_st
*ptr
)
159 /* If we have anything open, lets close it now */
161 memcached_server_list_free(memcached_server_list(ptr
));
162 memcached_result_free(&ptr
->result
);
164 if (ptr
->last_disconnected_server
)
165 memcached_server_free(ptr
->last_disconnected_server
);
168 ptr
->on_cleanup(ptr
);
171 libmemcached_free(ptr
, ptr
->continuum
);
173 #ifdef LIBMEMCACHED_WITH_SASL_SUPPORT
174 if (ptr
->sasl
.callbacks
!= NULL
)
176 memcached_destroy_sasl_auth_data(ptr
);
180 if (memcached_is_allocated(ptr
))
182 libmemcached_free(ptr
, ptr
);
187 clone is the destination, while source is the structure to clone.
188 If source is NULL the call is the same as if a memcached_create() was
191 memcached_st
*memcached_clone(memcached_st
*clone
, const memcached_st
*source
)
193 memcached_return_t rc
= MEMCACHED_SUCCESS
;
194 memcached_st
*new_clone
;
197 return memcached_create(clone
);
199 if (clone
&& memcached_is_allocated(clone
))
204 new_clone
= memcached_create(clone
);
206 if (new_clone
== NULL
)
209 new_clone
->flags
= source
->flags
;
210 new_clone
->send_size
= source
->send_size
;
211 new_clone
->recv_size
= source
->recv_size
;
212 new_clone
->poll_timeout
= source
->poll_timeout
;
213 new_clone
->connect_timeout
= source
->connect_timeout
;
214 new_clone
->retry_timeout
= source
->retry_timeout
;
215 new_clone
->distribution
= source
->distribution
;
217 hashkit_st
*hash_ptr
;
219 hash_ptr
= hashkit_clone(&new_clone
->hashkit
, &source
->hashkit
);
222 memcached_free(new_clone
);
226 hash_ptr
= hashkit_clone(&new_clone
->distribution_hashkit
, &source
->distribution_hashkit
);
229 memcached_free(new_clone
);
233 new_clone
->user_data
= source
->user_data
;
235 new_clone
->snd_timeout
= source
->snd_timeout
;
236 new_clone
->rcv_timeout
= source
->rcv_timeout
;
238 new_clone
->on_clone
= source
->on_clone
;
239 new_clone
->on_cleanup
= source
->on_cleanup
;
241 new_clone
->allocators
= source
->allocators
;
243 new_clone
->get_key_failure
= source
->get_key_failure
;
244 new_clone
->delete_trigger
= source
->delete_trigger
;
245 new_clone
->server_failure_limit
= source
->server_failure_limit
;
246 new_clone
->io_msg_watermark
= source
->io_msg_watermark
;
247 new_clone
->io_bytes_watermark
= source
->io_bytes_watermark
;
248 new_clone
->io_key_prefetch
= source
->io_key_prefetch
;
249 new_clone
->number_of_replicas
= source
->number_of_replicas
;
250 new_clone
->tcp_keepidle
= source
->tcp_keepidle
;
252 if (memcached_server_count(source
))
253 rc
= memcached_push(new_clone
, source
);
255 if (rc
!= MEMCACHED_SUCCESS
)
257 memcached_free(new_clone
);
263 if (source
->prefix_key_length
)
265 strcpy(new_clone
->prefix_key
, source
->prefix_key
);
266 new_clone
->prefix_key_length
= source
->prefix_key_length
;
269 #ifdef LIBMEMCACHED_WITH_SASL_SUPPORT
270 if (source
->sasl
.callbacks
)
272 if (memcached_clone_sasl(new_clone
, source
) != MEMCACHED_SUCCESS
)
274 memcached_free(new_clone
);
280 rc
= run_distribution(new_clone
);
282 if (rc
!= MEMCACHED_SUCCESS
)
284 memcached_free(new_clone
);
289 if (source
->on_clone
)
290 source
->on_clone(new_clone
, source
);
295 void *memcached_get_user_data(const memcached_st
*ptr
)
297 return ptr
->user_data
;
300 void *memcached_set_user_data(memcached_st
*ptr
, void *data
)
302 void *ret
= ptr
->user_data
;
303 ptr
->user_data
= data
;
308 memcached_return_t
memcached_push(memcached_st
*destination
, const memcached_st
*source
)
310 return memcached_server_push(destination
, source
->servers
);
313 memcached_server_write_instance_st
memcached_server_instance_fetch(memcached_st
*ptr
, uint32_t server_key
)
315 return &ptr
->servers
[server_key
];
318 memcached_server_instance_st
memcached_server_instance_by_position(const memcached_st
*ptr
, uint32_t server_key
)
320 return &ptr
->servers
[server_key
];