1 /* vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
5 * Copyright (C) 2011 Data Differential, http://datadifferential.com/
6 * Copyright (C) 2006-2009 Brian Aker All rights reserved.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions are
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13 * notice, this list of conditions and the following disclaimer.
15 * * Redistributions in binary form must reproduce the above
16 * copyright notice, this list of conditions and the following disclaimer
17 * in the documentation and/or other materials provided with the
20 * * The names of its contributors may not be used to endorse or
21 * promote products derived from this software without specific prior
24 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
25 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
26 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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30 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
31 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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34 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
38 #include <libmemcached/common.h>
40 char *memcached_fetch(memcached_st
*ptr
, char *key
, size_t *key_length
,
43 memcached_return_t
*error
)
45 memcached_result_st
*result_buffer
= &ptr
->result
;
46 memcached_return_t unused
;
51 unlikely (ptr
->flags
.use_udp
)
53 *error
= MEMCACHED_NOT_SUPPORTED
;
57 result_buffer
= memcached_fetch_result(ptr
, result_buffer
, error
);
59 if (result_buffer
== NULL
|| *error
!= MEMCACHED_SUCCESS
)
61 WATCHPOINT_ASSERT(result_buffer
== NULL
);
66 *value_length
= memcached_string_length(&result_buffer
->value
);
70 if (result_buffer
->key_length
> MEMCACHED_MAX_KEY
)
72 *error
= MEMCACHED_KEY_TOO_BIG
;
77 strncpy(key
, result_buffer
->item_key
, result_buffer
->key_length
); // For the binary protocol we will cut off the key :(
78 *key_length
= result_buffer
->key_length
;
81 *flags
= result_buffer
->item_flags
;
83 return memcached_string_c_copy(&result_buffer
->value
);
86 memcached_result_st
*memcached_fetch_result(memcached_st
*ptr
,
87 memcached_result_st
*result
,
88 memcached_return_t
*error
)
90 memcached_server_st
*server
;
92 unlikely (ptr
->flags
.use_udp
)
94 *error
= MEMCACHED_NOT_SUPPORTED
;
99 if ((result
= memcached_result_create(ptr
, NULL
)) == NULL
)
102 while ((server
= memcached_io_get_readable_server(ptr
)) != NULL
)
104 char buffer
[MEMCACHED_DEFAULT_COMMAND_SIZE
];
105 *error
= memcached_response(server
, buffer
, sizeof(buffer
), result
);
107 if (*error
== MEMCACHED_SUCCESS
)
109 else if (*error
== MEMCACHED_END
)
110 memcached_server_response_reset(server
);
111 else if (*error
!= MEMCACHED_NOTFOUND
)
115 /* We have completed reading data */
116 if (memcached_is_allocated(result
))
118 memcached_result_free(result
);
122 memcached_string_reset(&result
->value
);
128 memcached_return_t
memcached_fetch_execute(memcached_st
*ptr
,
129 memcached_execute_fn
*callback
,
131 uint32_t number_of_callbacks
)
133 memcached_result_st
*result
= &ptr
->result
;
134 memcached_return_t rc
= MEMCACHED_FAILURE
;
136 while ((result
= memcached_fetch_result(ptr
, result
, &rc
)) != NULL
)
138 if (rc
== MEMCACHED_SUCCESS
)
140 for (uint32_t x
= 0; x
< number_of_callbacks
; x
++)
142 rc
= (*callback
[x
])(ptr
, result
, context
);
143 if (rc
!= MEMCACHED_SUCCESS
)