3 char *memcached_get(memcached_st
*ptr
, char *key
, size_t key_length
,
6 memcached_return
*error
)
8 size_t send_length
, sent_length
;
9 char buffer
[MEMCACHED_DEFAULT_COMMAND_SIZE
];
11 unsigned int server_key
;
14 *error
= memcached_connect(ptr
);
16 if (*error
!= MEMCACHED_SUCCESS
)
19 server_key
= memcached_generate_hash(key
, key_length
) % ptr
->number_of_hosts
;
21 send_length
= snprintf(buffer
, MEMCACHED_DEFAULT_COMMAND_SIZE
, "get %.*s\r\n",
22 (int)key_length
, key
);
24 if (send_length
>= MEMCACHED_DEFAULT_COMMAND_SIZE
)
25 return MEMCACHED_WRITE_FAILURE
;
27 if ((sent_length
= write(ptr
->hosts
[server_key
].fd
, buffer
, send_length
) == -1))
29 *error
= MEMCACHED_WRITE_FAILURE
;
32 if (sent_length
!= send_length
) {
33 *error
= MEMCACHED_WRITE_FAILURE
;
37 memset(buffer
, 0, MEMCACHED_DEFAULT_COMMAND_SIZE
);
38 *error
= memcached_response(ptr
, buffer
, MEMCACHED_DEFAULT_COMMAND_SIZE
, server_key
);
40 if (*error
== MEMCACHED_SUCCESS
)
45 string_ptr
+= 6; /* "VALUE " */
47 /* We do nothing with the key, since we only asked for one key */
48 for (end_ptr
= string_ptr
; *end_ptr
!= ' '; end_ptr
++);
51 string_ptr
= end_ptr
+ 1;
52 for (end_ptr
= string_ptr
; *end_ptr
!= ' '; end_ptr
++);
53 *flags
= (uint16_t)strtol(string_ptr
, &end_ptr
, 10);
56 string_ptr
= end_ptr
+ 1;
57 for (end_ptr
= string_ptr
; *end_ptr
!= ' '; end_ptr
++);
58 *value_length
= strtoll(string_ptr
, &end_ptr
, 10);
60 /* Skip past the \r\n */
61 string_ptr
= end_ptr
+2;
69 value
= (char *)malloc(*value_length
* sizeof(char));
73 *error
= MEMCACHED_MEMORY_ALLOCATION_FAILURE
;
77 need_to_copy
= (*value_length
< (size_t)(buffer
-string_ptr
))
79 : (size_t)(buffer
-string_ptr
) ;
81 pos_ptr
= memcpy(value
, string_ptr
, need_to_copy
);
83 if ( need_to_copy
> *value_length
)
88 need_to_read
= *value_length
- need_to_copy
;
90 read_length
= read(ptr
->hosts
[server_key
].fd
, pos_ptr
, need_to_read
);
91 if (read_length
!= need_to_read
)
94 *error
= MEMCACHED_PARTIAL_READ
;