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git.ipfire.org Git - people/ms/systemd.git/blob - macro.h
1 /*-*- Mode: C; c-basic-offset: 8 -*-*/
7 This file is part of systemd.
9 Copyright 2010 Lennart Poettering
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.
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.
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/>.
26 #include <sys/types.h>
28 #define _printf_attr(a,b) __attribute__ ((format (printf, a, b)))
29 #define _sentinel __attribute__ ((sentinel))
30 #define _noreturn __attribute__((noreturn))
31 #define _unused __attribute__ ((unused))
32 #define _destructor __attribute__ ((destructor))
33 #define _pure __attribute__ ((pure))
34 #define _const __attribute__ ((const))
35 #define _deprecated __attribute__ ((deprecated))
36 #define _packed __attribute__ ((packed))
37 #define _malloc __attribute__ ((malloc))
38 #define _weak __attribute__ ((weak))
39 #define _likely(x) (__builtin_expect(!!(x),1))
40 #define _unlikely(x) (__builtin_expect(!!(x),0))
43 static inline size_t ALIGN(size_t l
) {
44 return ((l
+ sizeof(void*) - 1) & ~(sizeof(void*) - 1));
47 #define ELEMENTSOF(x) (sizeof(x)/sizeof((x)[0]))
63 #define CLAMP(x, low, high) \
66 typeof(low) _low = (low); \
67 typeof(high) _high = (high); \
68 ((_x > _high) ? _high : ((_x < _low) ? _low : _x)); \
71 #define assert_se(expr) \
73 if (_unlikely(!(expr))) \
74 log_assert(__FILE__, __LINE__, __PRETTY_FUNCTION__, \
75 "Assertion '%s' failed at %s:%u, function %s(). Aborting.", \
76 #expr , __FILE__, __LINE__, __PRETTY_FUNCTION__); \
79 /* We override the glibc assert() here. */
82 #define assert(expr) do {} while(false)
84 #define assert(expr) assert_se(expr)
87 #define assert_not_reached(t) \
89 log_assert(__FILE__, __LINE__, __PRETTY_FUNCTION__, \
90 "Code should not be reached '%s' at %s:%u, function %s(). Aborting.", \
91 t, __FILE__, __LINE__, __PRETTY_FUNCTION__); \
94 #define assert_cc(expr) \
103 #define PTR_TO_UINT(p) ((unsigned int) ((uintptr_t) (p)))
104 #define UINT_TO_PTR(u) ((void*) ((uintptr_t) (u)))
106 #define PTR_TO_UINT32(p) ((uint32_t) ((uintptr_t) (p)))
107 #define UINT32_TO_PTR(u) ((void*) ((uintptr_t) (u)))
109 #define PTR_TO_INT(p) ((int) ((intptr_t) (p)))
110 #define INT_TO_PTR(u) ((void*) ((intptr_t) (u)))
112 #define TO_INT32(p) ((int32_t) ((intptr_t) (p)))
113 #define INT32_TO_PTR(u) ((void*) ((intptr_t) (u)))
115 #define memzero(x,l) (memset((x), 0, (l)))
116 #define zero(x) (memzero(&(x), sizeof(x)))
118 #define char_array_0(x) x[sizeof(x)-1] = 0;
120 #define IOVEC_SET_STRING(iovec, s) \
122 (iovec).iov_base = s; \
123 (iovec).iov_len = strlen(s); \