1 /*
2 * Copyright (c) 2001-2018 The strace developers.
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. The name of the author may not be used to endorse or promote products
14 * derived from this software without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 */
27
28 #ifndef STRACE_MACROS_H
29 #define STRACE_MACROS_H
30
31 #include <stdbool.h>
32 #include <sys/types.h>
33
34 #include "gcc_compat.h"
35
36 #define ARRAY_SIZE(a_) (sizeof(a_) / sizeof((a_)[0]) + MUST_BE_ARRAY(a_))
37
38 #define ARRSZ_PAIR(a_) a_, ARRAY_SIZE(a_)
39
40 #define STRINGIFY(...) #__VA_ARGS__
41 #define STRINGIFY_VAL(...) STRINGIFY(__VA_ARGS__)
42
43 #ifndef MAX
44 # define MAX(a, b) (((a) > (b)) ? (a) : (b))
45 #endif
46 #ifndef MIN
47 # define MIN(a, b) (((a) < (b)) ? (a) : (b))
48 #endif
49 #define CLAMP(val, min, max) MIN(MAX(min, val), max)
50
51 #ifndef ROUNDUP
52 # define ROUNDUP(val_, div_) ((((val_) + (div_) - 1) / (div_)) * (div_))
53 #endif
54
55 #ifndef offsetofend
56 # define offsetofend(type_, member_) \
57 (offsetof(type_, member_) + sizeof(((type_ *)0)->member_))
58 #endif
59
60 static inline bool
is_filled(const char * ptr,char fill,size_t size)61 is_filled(const char *ptr, char fill, size_t size)
62 {
63 while (size--)
64 if (*ptr++ != fill)
65 return false;
66
67 return true;
68 }
69
70 #define IS_ARRAY_ZERO(arr_) \
71 is_filled((const char *) (arr_), 0, sizeof(arr_) + MUST_BE_ARRAY(arr_))
72
73 #endif /* !STRACE_MACROS_H */
74