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
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
|
/*
* Copyright (c) 2012, Intel Corporation
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of Intel Corporation nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef __MURPHY_MACROS_H__
#define __MURPHY_MACROS_H__
#include <stddef.h>
#ifndef FALSE
# define FALSE 0
# define TRUE (!FALSE)
#endif
#ifdef __cplusplus
# define typeof(expr) decltype(expr)
#endif
/** Align ptr to multiple of align. */
#define MRP_ALIGN(ptr, align) (((ptr) + ((align)-1)) & ~((align)-1))
/** Get the offset of the given member in a struct/union of the given type. */
#define MRP_OFFSET(type, member) ((ptrdiff_t)(&(((type *)0)->member)))
/** Determine the dimension of the given array. */
#define MRP_ARRAY_SIZE(array) (sizeof(array) / sizeof((array)[0]))
#ifndef __GNUC__
# define __FUNCTION__ __func__
#endif
#ifdef __GNUC__
/** MAX that evalutes its arguments only once. */
# define MRP_MAX(a, b) ({ \
typeof(a) _a = (a); \
typeof(b) _b = (b); \
_a > _b ? _a : _b; \
})
/** MIN that evalutes its arguments only once. */
# define MRP_MIN(a, b) ({ \
typeof(a) _a = (a), _b = (b); \
_a < _b ? _a : _b; \
})
/** Likeliness branch-prediction hint for the compiler. */
# define MRP_LIKELY(cond) __builtin_expect((cond), 1)
/** Unlikeliness branch-prediction hint for the compiler. */
# define MRP_UNLIKELY(cond) __builtin_expect((cond), 0)
/** Prevent symbol from being exported (overriden by linker scripts). */
# define MRP_HIDDEN __attribute__ ((visibility ("hidden")))
/** Request a symbol to be exported (overriden by linker scripts). */
# define MRP_EXPORT __attribute__ ((visibility ("default")))
/** Ask the compiler to check for the presence of a NULL-sentinel. */
# define MRP_NULLTERM __attribute__((sentinel))
/** Ask for printf-like format string checks of calls to this function. */
# define MRP_PRINTF_LIKE(format_idx, first_arg_idx) \
__attribute__ ((format (printf, format_idx, first_arg_idx)))
/** Mark a function to be called before main is entered. */
# define MRP_INIT __attribute__((constructor(65535)))
# define MRP_INIT_AT(prio) __attribute__ ((constructor(prio)))
/** Mark a function to be called after main returns, or exit is called. */
# define MRP_EXIT __attribute__ ((destructor(65535)))
# define MRP_EXIT_AT(prio) __attribute__ ((destructor(prio)))
/** Mark a variable unused. */
# define MRP_UNUSED(var) (void)var
#else /* ! __GNUC__ */
# define MRP_LIKELY(cond) (cond)
# define MRP_UNLIKELY(cond) (cond)
# define MRP_HIDDEN
# define MRP_EXPORT
# define MRP_NULLTERM
# define MRP_PRINTF_LIKE(format_idx, first_arg_idx)
# define __FUNCTION__ __func__
# define MRP_INIT
# define MRP_INIT_AT
# define MRP_EXIT
# define MRP_EXIT_AT
# define MRP_UNUSED(var)
#endif
/** Macro that can be used to pass the location of its usage. */
# define __LOC__ __FILE__, __LINE__, __FUNCTION__
/** Assertions. */
#ifndef NDEBUG
# define MRP_ASSERT(expr, fmt, args...) do { \
if (!(expr)) { \
printf("assertion '%s' failed at %s@%s:%d: "fmt"\n", #expr, \
__FUNCTION__, __FILE__, __LINE__, ## args); \
abort(); \
} \
} while (0)
#else
# define MRP_ASSERT(expr, msg) do { } while (0)
#endif
/** Create a version integer from a (major, minor, micro) tuple. */
#define MRP_VERSION_INT(maj, min, mic) \
((((maj) & 0xff) << 16) | (((min) & 0xff) << 8) | ((mic) & 0xff))
/** Create a version string from a (const) (major, minor, micro) tuple. */
#define MRP_VERSION_STRING(maj, min, mic) #maj"."#min"."#mic
/** Extract major version from a version integer. */
#define MRP_VERSION_MAJOR(ver) (((ver) >> 16) & 0xff)
/** Extract minor version from a version integer. */
#define MRP_VERSION_MINOR(ver) (((ver) >> 8) & 0xff)
/** Extract micro version from a version integer. */
#define MRP_VERSION_MICRO(ver) ((ver) & 0xff)
/** Macro to stringify a macro argument. */
#define MRP_STRINGIFY(arg) #arg
/** C++-compatibility macros. */
#ifdef __cplusplus
# define MRP_CDECL_BEGIN extern "C" {
# define MRP_CDECL_END }
#else
# define MRP_CDECL_BEGIN
# define MRP_CDECL_END
#endif
#endif /* __MURPHY_MACROS_H__ */
|
