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
|
//
// Copyright 2017 Garrett D'Amore <garrett@damore.org>
// Copyright 2017 Capitar IT Group BV <info@capitar.com>
//
// This software is supplied under the terms of the MIT License, a
// copy of which should be located in the distribution where this
// file was obtained (LICENSE.txt). A copy of the license may also be
// found online at https://opensource.org/licenses/MIT.
//
#ifndef CORE_OPTIONS_H
#define CORE_OPTIONS_H
// Option helpers. These can be called from protocols or transports
// in their own option handling, centralizing the logic for dealing with
// variable sized options.
// nni_setopt_buf sets the queue size for the message queue.
extern int nni_setopt_buf(nni_msgq *, const void *, size_t);
// nni_getopt_buf gets the queue size for the message queue.
extern int nni_getopt_buf(nni_msgq *, void *, size_t *);
// nni_setopt_duration sets the duration. Durations must be legal,
// either a positive value, 0, or -1 to indicate forever.
extern int nni_setopt_usec(nni_duration *, const void *, size_t);
// nni_getopt_duration gets the duration.
extern int nni_getopt_usec(nni_duration, void *, size_t *);
// nni_setopt_int sets an integer, which must be between the minimum and
// maximum values (inclusive).
extern int nni_setopt_int(int *, const void *, size_t, int, int);
#define NNI_MAXINT ((int) 2147483647)
#define NNI_MININT ((int) -2147483648)
// nni_getopt_int gets an integer.
extern int nni_getopt_int(int, void *, size_t *);
// nni_getopt_u64 gets an unsigned 64 bit number.
extern int nni_getopt_u64(uint64_t, void *, size_t *);
// nni_getopt_str gets a C style string.
extern int nni_getopt_str(const char *, void *, size_t *);
// nni_getopt_sockaddr gets an nng_sockaddr.
extern int nni_getopt_sockaddr(const nng_sockaddr *, void *, size_t *);
// nni_setopt_size sets a size_t option.
extern int nni_setopt_size(size_t *, const void *, size_t, size_t, size_t);
// We limit the maximum size to 4GB. That's intentional because some of the
// underlying protocols cannot cope with anything bigger than 32-bits.
#define NNI_MINSZ (0)
#define NNI_MAXSZ ((size_t) 0xffffffff)
// nni_getopt_size obtains a size_t option.
extern int nni_getopt_size(size_t, void *, size_t *);
// nni_getopt_fd obtains a notification file descriptor.
extern int nni_getopt_fd(nni_sock *, nni_notifyfd *, int, void *, size_t *);
extern int nni_chkopt_usec(const void *, size_t);
extern int nni_chkopt_int(const void *, size_t, int, int);
extern int nni_chkopt_size(const void *, size_t, size_t, size_t);
extern int nni_option_register(const char *, int *);
extern int nni_option_lookup(const char *);
extern const char *nni_option_name(int);
extern int nni_option_sys_init(void);
extern void nni_option_sys_fini(void);
#endif // CORE_OPTIONS_H
|
