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03467c88 | 1 | /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ |
60918275 LP |
2 | |
3 | #ifndef foomacrohfoo | |
4 | #define foomacrohfoo | |
5 | ||
a7334b09 LP |
6 | /*** |
7 | This file is part of systemd. | |
8 | ||
9 | Copyright 2010 Lennart Poettering | |
10 | ||
11 | systemd is free software; you can redistribute it and/or modify it | |
12 | under the terms of the GNU General Public License as published by | |
13 | the Free Software Foundation; either version 2 of the License, or | |
14 | (at your option) any later version. | |
15 | ||
16 | systemd is distributed in the hope that it will be useful, but | |
17 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
18 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
19 | General Public License for more details. | |
20 | ||
21 | You should have received a copy of the GNU General Public License | |
22 | along with systemd; If not, see <http://www.gnu.org/licenses/>. | |
23 | ***/ | |
24 | ||
60918275 LP |
25 | #include <assert.h> |
26 | #include <sys/types.h> | |
c31e1495 LP |
27 | #include <sys/uio.h> |
28 | #include <inttypes.h> | |
60918275 | 29 | |
22be093f LP |
30 | #define PAGE_SIZE 4096 |
31 | ||
93a46b0b LP |
32 | #define _printf_attr_(a,b) __attribute__ ((format (printf, a, b))) |
33 | #define _sentinel_ __attribute__ ((sentinel)) | |
34 | #define _noreturn_ __attribute__((noreturn)) | |
35 | #define _unused_ __attribute__ ((unused)) | |
36 | #define _destructor_ __attribute__ ((destructor)) | |
37 | #define _pure_ __attribute__ ((pure)) | |
38 | #define _const_ __attribute__ ((const)) | |
39 | #define _deprecated_ __attribute__ ((deprecated)) | |
40 | #define _packed_ __attribute__ ((packed)) | |
41 | #define _malloc_ __attribute__ ((malloc)) | |
42 | #define _weak_ __attribute__ ((weak)) | |
43 | #define _likely_(x) (__builtin_expect(!!(x),1)) | |
44 | #define _unlikely_(x) (__builtin_expect(!!(x),0)) | |
40473a70 LP |
45 | #define _public_ __attribute__ ((visibility("default"))) |
46 | #define _hidden_ __attribute__ ((visibility("hidden"))) | |
ad780f19 | 47 | #define _weakref_(x) __attribute__((weakref(#x))) |
9a60da28 | 48 | #define _introspect_(x) __attribute__((section("introspect." x))) |
60918275 LP |
49 | |
50 | /* Rounds up */ | |
51 | static inline size_t ALIGN(size_t l) { | |
52 | return ((l + sizeof(void*) - 1) & ~(sizeof(void*) - 1)); | |
53 | } | |
54 | ||
22be093f LP |
55 | static inline size_t PAGE_ALIGN(size_t l) { |
56 | return ((l + PAGE_SIZE - 1) & ~(PAGE_SIZE -1)); | |
57 | } | |
58 | ||
60918275 LP |
59 | #define ELEMENTSOF(x) (sizeof(x)/sizeof((x)[0])) |
60 | ||
3b63d2d3 | 61 | #ifndef MAX |
60918275 LP |
62 | #define MAX(a,b) \ |
63 | __extension__ ({ \ | |
64 | typeof(a) _a = (a); \ | |
65 | typeof(b) _b = (b); \ | |
66 | _a > _b ? _a : _b; \ | |
67 | }) | |
3b63d2d3 | 68 | #endif |
60918275 | 69 | |
3b63d2d3 LP |
70 | #define MAX3(a,b,c) \ |
71 | MAX(MAX(a,b),c) | |
72 | ||
73 | #ifndef MIN | |
60918275 LP |
74 | #define MIN(a,b) \ |
75 | __extension__ ({ \ | |
76 | typeof(a) _a = (a); \ | |
77 | typeof(b) _b = (b); \ | |
78 | _a < _b ? _a : _b; \ | |
79 | }) | |
3b63d2d3 LP |
80 | #endif |
81 | ||
82 | #define MIN3(a,b,c) \ | |
83 | MIN(MIN(a,b),c) | |
60918275 LP |
84 | |
85 | #define CLAMP(x, low, high) \ | |
86 | __extension__ ({ \ | |
87 | typeof(x) _x = (x); \ | |
88 | typeof(low) _low = (low); \ | |
89 | typeof(high) _high = (high); \ | |
90 | ((_x > _high) ? _high : ((_x < _low) ? _low : _x)); \ | |
91 | }) | |
92 | ||
dd8f71ee LP |
93 | #define assert_se(expr) \ |
94 | do { \ | |
93a46b0b | 95 | if (_unlikely_(!(expr))) \ |
185986c6 LP |
96 | log_assert(__FILE__, __LINE__, __PRETTY_FUNCTION__, \ |
97 | "Assertion '%s' failed at %s:%u, function %s(). Aborting.", \ | |
98 | #expr , __FILE__, __LINE__, __PRETTY_FUNCTION__); \ | |
dd8f71ee LP |
99 | } while (false) \ |
100 | ||
101 | /* We override the glibc assert() here. */ | |
102 | #undef assert | |
103 | #ifdef NDEBUG | |
104 | #define assert(expr) do {} while(false) | |
105 | #else | |
106 | #define assert(expr) assert_se(expr) | |
107 | #endif | |
60918275 | 108 | |
dd8f71ee LP |
109 | #define assert_not_reached(t) \ |
110 | do { \ | |
185986c6 LP |
111 | log_assert(__FILE__, __LINE__, __PRETTY_FUNCTION__, \ |
112 | "Code should not be reached '%s' at %s:%u, function %s(). Aborting.", \ | |
113 | t, __FILE__, __LINE__, __PRETTY_FUNCTION__); \ | |
dd8f71ee | 114 | } while (false) |
60918275 LP |
115 | |
116 | #define assert_cc(expr) \ | |
117 | do { \ | |
118 | switch (0) { \ | |
119 | case 0: \ | |
120 | case !!(expr): \ | |
121 | ; \ | |
122 | } \ | |
123 | } while (false) | |
124 | ||
125 | #define PTR_TO_UINT(p) ((unsigned int) ((uintptr_t) (p))) | |
126 | #define UINT_TO_PTR(u) ((void*) ((uintptr_t) (u))) | |
127 | ||
128 | #define PTR_TO_UINT32(p) ((uint32_t) ((uintptr_t) (p))) | |
129 | #define UINT32_TO_PTR(u) ((void*) ((uintptr_t) (u))) | |
130 | ||
c6c18be3 LP |
131 | #define PTR_TO_ULONG(p) ((unsigned long) ((uintptr_t) (p))) |
132 | #define ULONG_TO_PTR(u) ((void*) ((uintptr_t) (u))) | |
133 | ||
60918275 LP |
134 | #define PTR_TO_INT(p) ((int) ((intptr_t) (p))) |
135 | #define INT_TO_PTR(u) ((void*) ((intptr_t) (u))) | |
136 | ||
137 | #define TO_INT32(p) ((int32_t) ((intptr_t) (p))) | |
138 | #define INT32_TO_PTR(u) ((void*) ((intptr_t) (u))) | |
139 | ||
c6c18be3 LP |
140 | #define PTR_TO_LONG(p) ((long) ((intptr_t) (p))) |
141 | #define LONG_TO_PTR(u) ((void*) ((intptr_t) (u))) | |
142 | ||
476fe607 LP |
143 | #define memzero(x,l) (memset((x), 0, (l))) |
144 | #define zero(x) (memzero(&(x), sizeof(x))) | |
145 | ||
034c6ed7 LP |
146 | #define char_array_0(x) x[sizeof(x)-1] = 0; |
147 | ||
bff7c062 | 148 | #define IOVEC_SET_STRING(i, s) \ |
2fa086a8 | 149 | do { \ |
bff7c062 LP |
150 | struct iovec *_i = &(i); \ |
151 | char *_s = (char *)(s); \ | |
152 | _i->iov_base = _s; \ | |
153 | _i->iov_len = strlen(_s); \ | |
2fa086a8 LP |
154 | } while(false); |
155 | ||
c31e1495 LP |
156 | static inline size_t IOVEC_TOTAL_SIZE(const struct iovec *i, unsigned n) { |
157 | unsigned j; | |
158 | size_t r = 0; | |
159 | ||
160 | for (j = 0; j < n; j++) | |
161 | r += i[j].iov_len; | |
162 | ||
163 | return r; | |
164 | } | |
165 | ||
166 | static inline size_t IOVEC_INCREMENT(struct iovec *i, unsigned n, size_t k) { | |
167 | unsigned j; | |
168 | ||
169 | for (j = 0; j < n; j++) { | |
170 | size_t sub; | |
171 | ||
172 | if (_unlikely_(k <= 0)) | |
173 | break; | |
174 | ||
175 | sub = MIN(i[j].iov_len, k); | |
176 | i[j].iov_len -= sub; | |
177 | i[j].iov_base = (uint8_t*) i[j].iov_base + sub; | |
178 | k -= sub; | |
179 | } | |
180 | ||
181 | return k; | |
182 | } | |
183 | ||
dd8f71ee LP |
184 | #include "log.h" |
185 | ||
60918275 | 186 | #endif |