1 /* vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
5 * Copyright (C) 2011-2012 Data Differential, http://datadifferential.com/
6 * Copyright (C) 2009-2010 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
12 * * Redistributions of source code must retain the above copyright
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
27 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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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.
44 HASHKIT_MEMORY_ALLOCATION_FAILURE
,
46 HASHKIT_INVALID_ARGUMENT
,
47 HASHKIT_MAXIMUM_RETURN
/* Always add new error code before */
50 static inline bool hashkit_success(const hashkit_return_t rc
)
52 return (rc
== HASHKIT_SUCCESS
);
55 static inline bool hashkit_failed(const hashkit_return_t rc
)
57 return (rc
!= HASHKIT_SUCCESS
);
61 HASHKIT_HASH_DEFAULT
= 0, // hashkit_one_at_a_time()
65 HASHKIT_HASH_FNV1A_64
,
67 HASHKIT_HASH_FNV1A_32
,
73 } hashkit_hash_algorithm_t
;
76 * Hash distributions that are available to use.
80 HASHKIT_DISTRIBUTION_MODULA
,
81 HASHKIT_DISTRIBUTION_RANDOM
,
82 HASHKIT_DISTRIBUTION_KETAMA
,
83 HASHKIT_DISTRIBUTION_MAX
/* Always add new values before this. */
84 } hashkit_distribution_t
;
90 typedef struct hashkit_st hashkit_st
;
91 typedef struct hashkit_string_st hashkit_string_st
;
93 typedef uint32_t (*hashkit_hash_fn
)(const char *key
, size_t key_length
, void *context
);