macro.h revision e99e38bbdcca3fe5956823bdb3d38544ccf93221
/*-*- Mode: C; c-basic-offset: 8 -*-*/
#ifndef foomacrohfoo
#define foomacrohfoo
/***
This file is part of systemd.
Copyright 2010 Lennart Poettering
systemd is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
systemd is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received a copy of the GNU General Public License
along with systemd; If not, see <http://www.gnu.org/licenses/>.
***/
#include <assert.h>
#include <sys/types.h>
#define _printf_attr(a,b) __attribute__ ((format (printf, a, b)))
#define _sentinel __attribute__ ((sentinel))
#define _noreturn __attribute__((noreturn))
#define _unused __attribute__ ((unused))
#define _destructor __attribute__ ((destructor))
#define _pure __attribute__ ((pure))
#define _const __attribute__ ((const))
#define _deprecated __attribute__ ((deprecated))
#define _packed __attribute__ ((packed))
#define _malloc __attribute__ ((malloc))
#define _weak __attribute__ ((weak))
#define _likely(x) (__builtin_expect(!!(x),1))
#define _unlikely(x) (__builtin_expect(!!(x),0))
/* Rounds up */
static inline size_t ALIGN(size_t l) {
return ((l + sizeof(void*) - 1) & ~(sizeof(void*) - 1));
}
#define ELEMENTSOF(x) (sizeof(x)/sizeof((x)[0]))
#define MAX(a,b) \
__extension__ ({ \
typeof(a) _a = (a); \
typeof(b) _b = (b); \
_a > _b ? _a : _b; \
})
#define MIN(a,b) \
__extension__ ({ \
typeof(a) _a = (a); \
typeof(b) _b = (b); \
_a < _b ? _a : _b; \
})
#define CLAMP(x, low, high) \
__extension__ ({ \
typeof(x) _x = (x); \
typeof(low) _low = (low); \
typeof(high) _high = (high); \
((_x > _high) ? _high : ((_x < _low) ? _low : _x)); \
})
#define assert_se(expr) \
do { \
if (_unlikely(!(expr))) \
log_assert(__FILE__, __LINE__, __PRETTY_FUNCTION__, \
"Assertion '%s' failed at %s:%u, function %s(). Aborting.", \
#expr , __FILE__, __LINE__, __PRETTY_FUNCTION__); \
} while (false) \
/* We override the glibc assert() here. */
#undef assert
#ifdef NDEBUG
#define assert(expr) do {} while(false)
#else
#define assert(expr) assert_se(expr)
#endif
#define assert_not_reached(t) \
do { \
log_assert(__FILE__, __LINE__, __PRETTY_FUNCTION__, \
"Code should not be reached '%s' at %s:%u, function %s(). Aborting.", \
t, __FILE__, __LINE__, __PRETTY_FUNCTION__); \
} while (false)
#define assert_cc(expr) \
do { \
switch (0) { \
case 0: \
case !!(expr): \
; \
} \
} while (false)
#define PTR_TO_UINT(p) ((unsigned int) ((uintptr_t) (p)))
#define UINT_TO_PTR(u) ((void*) ((uintptr_t) (u)))
#define PTR_TO_UINT32(p) ((uint32_t) ((uintptr_t) (p)))
#define UINT32_TO_PTR(u) ((void*) ((uintptr_t) (u)))
#define PTR_TO_INT(p) ((int) ((intptr_t) (p)))
#define INT_TO_PTR(u) ((void*) ((intptr_t) (u)))
#define TO_INT32(p) ((int32_t) ((intptr_t) (p)))
#define INT32_TO_PTR(u) ((void*) ((intptr_t) (u)))
#define memzero(x,l) (memset((x), 0, (l)))
#define zero(x) (memzero(&(x), sizeof(x)))
#define char_array_0(x) x[sizeof(x)-1] = 0;
#define IOVEC_SET_STRING(i, s) \
do { \
struct iovec *_i = &(i); \
char *_s = (char *)(s); \
_i->iov_base = _s; \
_i->iov_len = strlen(_s); \
} while(false);
#include "log.h"
#endif