aboutsummaryrefslogtreecommitdiff
path: root/src/include/gnunet_peer_lib.h
blob: 4a67878b9bd89a18ae9a3c76065f029dee911421 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
/*
     This file is part of GNUnet.
     Copyright (C) 2006, 2009 GNUnet e.V.

     GNUnet is free software: you can redistribute it and/or modify it
     under the terms of the GNU Affero General Public License as published
     by the Free Software Foundation, either version 3 of the License,
     or (at your option) any later version.

     GNUnet is distributed in the hope that it will be useful, but
     WITHOUT ANY WARRANTY; without even the implied warranty of
     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     Affero General Public License for more details.

     You should have received a copy of the GNU Affero General Public License
     along with this program.  If not, see <http://www.gnu.org/licenses/>.

     SPDX-License-Identifier: AGPL3.0-or-later
 */

#if !defined (__GNUNET_UTIL_LIB_H_INSIDE__)
#error "Only <gnunet_util_lib.h> can be included directly."
#endif

/**
 * @addtogroup libgnunetutil
 * Multi-function utilities library for GNUnet programs
 * @{
 *
 * @author Christian Grothoff
 *
 * @file
 * Helper library for interning of peer identifiers
 *
 * @defgroup peer  Peer library
 * Helper library for interning of peer identifiers
 * @{
 */

#ifndef GNUNET_PEER_LIB_H
#define GNUNET_PEER_LIB_H


#include "gnunet_util_lib.h"

#ifdef __cplusplus
extern "C"
{
#if 0                           /* keep Emacsens' auto-indent happy */
}
#endif
#endif

/**
 * A GNUNET_PEER_Id is simply a shorter version of a "struct
 * GNUNET_PeerIdentifier" that can be used inside of a GNUnet peer to
 * save memory when the same identifier needs to be used over and over
 * again.
 */
typedef unsigned int GNUNET_PEER_Id;


/**
 * Search for a peer identity. The reference counter is not changed.
 *
 * @param pid identity to find
 * @return the interned identity or 0.
 */
GNUNET_PEER_Id
GNUNET_PEER_search (const struct GNUNET_PeerIdentity *pid);


/**
 * Intern an peer identity.  If the identity is already known, its
 * reference counter will be increased by one.
 *
 * @param pid identity to intern
 * @return the interned identity.
 */
GNUNET_PEER_Id
GNUNET_PEER_intern (const struct GNUNET_PeerIdentity *pid);


/**
 * Change the reference counter of an interned PID.
 *
 * @param id identity to change the RC of
 * @param delta how much to change the RC
 */
void
GNUNET_PEER_change_rc (GNUNET_PEER_Id id, int delta);


/**
 * Decrement multiple RCs of peer identities by one.
 *
 * @param ids array of PIDs to decrement the RCs of
 * @param count size of the @a ids array
 */
void
GNUNET_PEER_decrement_rcs (const GNUNET_PEER_Id *ids,
                           unsigned int count);


/**
 * Convert an interned PID to a normal peer identity.
 *
 * @param id interned PID to convert
 * @param pid where to write the normal peer identity
 */
void
GNUNET_PEER_resolve (GNUNET_PEER_Id id,
                     struct GNUNET_PeerIdentity *pid);


/**
 * Convert an interned PID to a normal peer identity.
 *
 * @param id interned PID to convert
 * @return pointer to peer identity, valid as long @a id is valid
 */
const struct GNUNET_PeerIdentity *
GNUNET_PEER_resolve2 (GNUNET_PEER_Id id);


#if 0                           /* keep Emacsens' auto-indent happy */
{
#endif
#ifdef __cplusplus
}
#endif

/* ifndef GNUNET_PEER_LIB_H */
#endif

/** @} */  /* end of group */

/** @} */ /* end of group addition */

/* end of gnunet_peer_lib.h */