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
|
/*
* ngtcp2
*
* Copyright (c) 2017 ngtcp2 contributors
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#ifndef NGTCP2_MACRO_H
#define NGTCP2_MACRO_H
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif /* HAVE_CONFIG_H */
#include <stddef.h>
#include <ngtcp2/ngtcp2.h>
#define ngtcp2_min(A, B) ((A) < (B) ? (A) : (B))
#define ngtcp2_max(A, B) ((A) > (B) ? (A) : (B))
#define ngtcp2_struct_of(ptr, type, member) \
((type *)(void *)((char *)(ptr)-offsetof(type, member)))
/* ngtcp2_list_insert inserts |T| before |*PD|. The contract is that
this is singly linked list, and the next element is pointed by next
field of the previous element. |PD| must be a pointer to the
pointer to the next field of the previous element of |*PD|: if C is
the previous element of |PD|, PD = &C->next. */
#define ngtcp2_list_insert(T, PD) \
do { \
(T)->next = *(PD); \
*(PD) = (T); \
} while (0)
/*
* ngtcp2_arraylen returns the number of elements in array |A|.
*/
#define ngtcp2_arraylen(A) (sizeof(A) / sizeof(A[0]))
/*
* ngtcp2_max variants but they are inline functions. The
* intermediate values are stored in parameters so that they are
* evaluated just once.
*/
#define ngtcp2_max_def(SUFFIX, T) \
static inline T ngtcp2_max_##SUFFIX(T a, T b) { return a < b ? b : a; }
ngtcp2_max_def(int8, int8_t);
ngtcp2_max_def(int16, int16_t);
ngtcp2_max_def(int32, int32_t);
ngtcp2_max_def(int64, int64_t);
ngtcp2_max_def(uint8, uint8_t);
ngtcp2_max_def(uint16, uint16_t);
ngtcp2_max_def(uint32, uint32_t);
ngtcp2_max_def(uint64, uint64_t);
ngtcp2_max_def(size, size_t);
/*
* ngtcp2_min variants but they are inline functions. The
* intermediate values are stored in parameters so that they are
* evaluated just once.
*/
#define ngtcp2_min_def(SUFFIX, T) \
static inline T ngtcp2_min_##SUFFIX(T a, T b) { return a < b ? a : b; }
ngtcp2_min_def(int8, int8_t);
ngtcp2_min_def(int16, int16_t);
ngtcp2_min_def(int32, int32_t);
ngtcp2_min_def(int64, int64_t);
ngtcp2_min_def(uint8, uint8_t);
ngtcp2_min_def(uint16, uint16_t);
ngtcp2_min_def(uint32, uint32_t);
ngtcp2_min_def(uint64, uint64_t);
ngtcp2_min_def(size, size_t);
#endif /* NGTCP2_MACRO_H */
|
