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author | Christian Grothoff <christian@grothoff.org> | 2014-11-27 14:10:47 +0000 |
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committer | Christian Grothoff <christian@grothoff.org> | 2014-11-27 14:10:47 +0000 |
commit | 0d3932d5151f61cf4838123dd7edc66f27c08dfc (patch) | |
tree | 7804fca56796e33c77cd46738e296dc2d61a1973 /src/set/gnunet-service-set_union_strata_estimator.h | |
parent | 6062da84163355a854b8213538ad82127552adc0 (diff) | |
download | gnunet-0d3932d5151f61cf4838123dd7edc66f27c08dfc.tar.gz gnunet-0d3932d5151f61cf4838123dd7edc66f27c08dfc.zip |
-renaming
Diffstat (limited to 'src/set/gnunet-service-set_union_strata_estimator.h')
-rw-r--r-- | src/set/gnunet-service-set_union_strata_estimator.h | 147 |
1 files changed, 147 insertions, 0 deletions
diff --git a/src/set/gnunet-service-set_union_strata_estimator.h b/src/set/gnunet-service-set_union_strata_estimator.h new file mode 100644 index 000000000..bb8d09d31 --- /dev/null +++ b/src/set/gnunet-service-set_union_strata_estimator.h | |||
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1 | /* | ||
2 | This file is part of GNUnet | ||
3 | (C) 2012 Christian Grothoff (and other contributing authors) | ||
4 | |||
5 | GNUnet is free software; you can redistribute it and/or modify | ||
6 | it under the terms of the GNU General Public License as published | ||
7 | by the Free Software Foundation; either version 3, or (at your | ||
8 | option) any later version. | ||
9 | |||
10 | GNUnet is distributed in the hope that it will be useful, but | ||
11 | WITHOUT ANY WARRANTY; without even the implied warranty of | ||
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | ||
13 | General Public License for more details. | ||
14 | |||
15 | You should have received a copy of the GNU General Public License | ||
16 | along with GNUnet; see the file COPYING. If not, write to the | ||
17 | Free Software Foundation, Inc., 59 Temple Place - Suite 330, | ||
18 | Boston, MA 02111-1307, USA. | ||
19 | */ | ||
20 | |||
21 | /** | ||
22 | * @file set/gnunet-service-set_union_strata_estimator.h | ||
23 | * @brief estimator of set difference | ||
24 | * @author Florian Dold | ||
25 | */ | ||
26 | |||
27 | #ifndef GNUNET_CONSENSUS_STRATA_ESTIMATOR_H | ||
28 | #define GNUNET_CONSENSUS_STRATA_ESTIMATOR_H | ||
29 | |||
30 | #include "platform.h" | ||
31 | #include "gnunet_common.h" | ||
32 | #include "gnunet_util_lib.h" | ||
33 | |||
34 | #ifdef __cplusplus | ||
35 | extern "C" | ||
36 | { | ||
37 | #if 0 /* keep Emacsens' auto-indent happy */ | ||
38 | } | ||
39 | #endif | ||
40 | #endif | ||
41 | |||
42 | |||
43 | /** | ||
44 | * A handle to a strata estimator. | ||
45 | */ | ||
46 | struct StrataEstimator | ||
47 | { | ||
48 | struct InvertibleBloomFilter **strata; | ||
49 | unsigned int strata_count; | ||
50 | unsigned int ibf_size; | ||
51 | }; | ||
52 | |||
53 | |||
54 | /** | ||
55 | * Write the given strata estimator to the buffer. | ||
56 | * | ||
57 | * @param se strata estimator to serialize | ||
58 | * @param buf buffer to write to, must be of appropriate size | ||
59 | */ | ||
60 | void | ||
61 | strata_estimator_write (const struct StrataEstimator *se, void *buf); | ||
62 | |||
63 | |||
64 | /** | ||
65 | * Read strata from the buffer into the given strata | ||
66 | * estimator. The strata estimator must already be allocated. | ||
67 | * | ||
68 | * @param buf buffer to read from | ||
69 | * @param se strata estimator to write to | ||
70 | */ | ||
71 | void | ||
72 | strata_estimator_read (const void *buf, struct StrataEstimator *se); | ||
73 | |||
74 | |||
75 | /** | ||
76 | * Create a new strata estimator with the given parameters. | ||
77 | * | ||
78 | * @param strata_count number of stratas, that is, number of ibfs in the estimator | ||
79 | * @param ibf_size size of each ibf stratum | ||
80 | * @param ibf_hashnum hashnum parameter of each ibf | ||
81 | * @return a freshly allocated, empty strata estimator | ||
82 | */ | ||
83 | struct StrataEstimator * | ||
84 | strata_estimator_create (unsigned int strata_count, uint32_t ibf_size, uint8_t ibf_hashnum); | ||
85 | |||
86 | |||
87 | /** | ||
88 | * Get an estimation of the symmetric difference of the elements | ||
89 | * contained in both strata estimators. | ||
90 | * | ||
91 | * @param se1 first strata estimator | ||
92 | * @param se2 second strata estimator | ||
93 | * @return abs(|se1| - |se2|) | ||
94 | */ | ||
95 | unsigned int | ||
96 | strata_estimator_difference (const struct StrataEstimator *se1, | ||
97 | const struct StrataEstimator *se2); | ||
98 | |||
99 | |||
100 | /** | ||
101 | * Add a key to the strata estimator. | ||
102 | * | ||
103 | * @param se strata estimator to add the key to | ||
104 | * @param key key to add | ||
105 | */ | ||
106 | void | ||
107 | strata_estimator_insert (struct StrataEstimator *se, struct IBF_Key key); | ||
108 | |||
109 | |||
110 | /** | ||
111 | * Remove a key from the strata estimator. | ||
112 | * | ||
113 | * @param se strata estimator to remove the key from | ||
114 | * @param key key to remove | ||
115 | */ | ||
116 | void | ||
117 | strata_estimator_remove (struct StrataEstimator *se, struct IBF_Key key); | ||
118 | |||
119 | |||
120 | /** | ||
121 | * Destroy a strata estimator, free all of its resources. | ||
122 | * | ||
123 | * @param se strata estimator to destroy. | ||
124 | */ | ||
125 | void | ||
126 | strata_estimator_destroy (struct StrataEstimator *se); | ||
127 | |||
128 | |||
129 | /** | ||
130 | * Make a copy of a strata estimator. | ||
131 | * | ||
132 | * @param se the strata estimator to copy | ||
133 | * @return the copy | ||
134 | */ | ||
135 | struct StrataEstimator * | ||
136 | strata_estimator_dup (struct StrataEstimator *se); | ||
137 | |||
138 | |||
139 | #if 0 /* keep Emacsens' auto-indent happy */ | ||
140 | { | ||
141 | #endif | ||
142 | #ifdef __cplusplus | ||
143 | } | ||
144 | #endif | ||
145 | |||
146 | #endif | ||
147 | |||