mirror of
https://github.com/checkpoint-restore/criu
synced 2025-08-22 18:07:57 +00:00
96b7178bab
My editor (vim) auto-removes whitespace at EOL for *.c and *.h files, and I think it makes sense to have a separate commit for this, rather than littering other commits with such changes. To make sure this won't pile up again, add a line to Makefile under the linter target to check for such things (so CI will fail). This is all whitespace except an addition to Makefile. Signed-off-by: Kir Kolyshkin <kolyshkin@gmail.com>
130 lines
4.0 KiB
C
130 lines
4.0 KiB
C
#ifndef __CR_COMPILER_H__
|
|
#define __CR_COMPILER_H__
|
|
|
|
/*
|
|
* Various definitions for success build,
|
|
* picked from various places, mostly from
|
|
* the linux kernel.
|
|
*/
|
|
|
|
#define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
|
|
#define NELEMS_AS_ARRAY(x,y) (sizeof(x) / sizeof((y)[0]))
|
|
#define BUILD_BUG_ON(condition) ((void)sizeof(char[1 - 2*!!(condition)]))
|
|
|
|
#define ASSIGN_TYPED(a, b) do { (a) = (typeof(a))(b); } while (0)
|
|
#define ASSIGN_MEMBER(a, b, m) do { ASSIGN_TYPED((a)->m, (b)->m); } while (0)
|
|
|
|
#define __stringify_1(x...) #x
|
|
#define __stringify(x...) __stringify_1(x)
|
|
|
|
#define NORETURN __attribute__((__noreturn__))
|
|
#define __packed __attribute__((__packed__))
|
|
#define __used __attribute__((__used__))
|
|
#define __maybe_unused __attribute__((unused))
|
|
#define __always_unused __attribute__((unused))
|
|
#define __must_check __attribute__((__warn_unused_result__))
|
|
|
|
#define __section(S) __attribute__ ((__section__(#S)))
|
|
|
|
#ifndef __always_inline
|
|
# define __always_inline inline __attribute__((always_inline))
|
|
#endif
|
|
|
|
#define likely(x) __builtin_expect(!!(x), 1)
|
|
#define unlikely(x) __builtin_expect(!!(x), 0)
|
|
|
|
#ifndef always_inline
|
|
# define always_inline __always_inline
|
|
#endif
|
|
|
|
#ifndef noinline
|
|
# define noinline __attribute__((noinline))
|
|
#endif
|
|
|
|
#define __aligned(x) __attribute__((aligned(x)))
|
|
|
|
/*
|
|
* Macro to define stack alignment.
|
|
* aarch64 requires stack to be aligned to 16 bytes.
|
|
*/
|
|
#define __stack_aligned__ __attribute__((aligned(16)))
|
|
|
|
#ifndef offsetof
|
|
# define offsetof(TYPE, MEMBER) ((size_t) &((TYPE *)0)->MEMBER)
|
|
#endif
|
|
|
|
#define barrier() asm volatile("" ::: "memory")
|
|
|
|
#define container_of(ptr, type, member) ({ \
|
|
const typeof( ((type *)0)->member ) *__mptr = (ptr); \
|
|
(type *)( (char *)__mptr - offsetof(type,member) );})
|
|
|
|
#ifndef FIELD_SIZEOF
|
|
# define FIELD_SIZEOF(t, f) (sizeof(((t*)0)->f))
|
|
#endif
|
|
|
|
#define __round_mask(x, y) ((__typeof__(x))((y) - 1))
|
|
#define round_up(x, y) ((((x) - 1) | __round_mask(x, y)) + 1)
|
|
#define round_down(x, y) ((x) & ~__round_mask(x, y))
|
|
#define DIV_ROUND_UP(n,d) (((n) + (d) - 1) / (d))
|
|
#define ALIGN(x, a) (((x) + (a) - 1) & ~((a) - 1))
|
|
|
|
#define min(x, y) ({ \
|
|
typeof(x) _min1 = (x); \
|
|
typeof(y) _min2 = (y); \
|
|
(void) (&_min1 == &_min2); \
|
|
_min1 < _min2 ? _min1 : _min2; })
|
|
|
|
#define max(x, y) ({ \
|
|
typeof(x) _max1 = (x); \
|
|
typeof(y) _max2 = (y); \
|
|
(void) (&_max1 == &_max2); \
|
|
_max1 > _max2 ? _max1 : _max2; })
|
|
|
|
#define min_t(type, x, y) ({ \
|
|
type __min1 = (x); \
|
|
type __min2 = (y); \
|
|
__min1 < __min2 ? __min1: __min2; })
|
|
|
|
#define max_t(type, x, y) ({ \
|
|
type __max1 = (x); \
|
|
type __max2 = (y); \
|
|
__max1 > __max2 ? __max1: __max2; })
|
|
|
|
#define SWAP(x, y) \
|
|
do { \
|
|
typeof(x) ____val = x; \
|
|
x = y; \
|
|
y = ____val; \
|
|
} while (0)
|
|
|
|
#define is_log2(v) (((v) & ((v) - 1)) == 0)
|
|
|
|
/*
|
|
* Use "__ignore_value" to avoid a warning when using a function declared with
|
|
* gcc's warn_unused_result attribute, but for which you really do want to
|
|
* ignore the result. Traditionally, people have used a "(void)" cast to
|
|
* indicate that a function's return value is deliberately unused. However,
|
|
* if the function is declared with __attribute__((warn_unused_result)),
|
|
* gcc issues a warning even with the cast.
|
|
*
|
|
* Caution: most of the time, you really should heed gcc's warning, and
|
|
* check the return value. However, in those exceptional cases in which
|
|
* you're sure you know what you're doing, use this function.
|
|
*
|
|
* Normally casting an expression to void discards its value, but GCC
|
|
* versions 3.4 and newer have __attribute__ ((__warn_unused_result__))
|
|
* which may cause unwanted diagnostics in that case. Use __typeof__
|
|
* and __extension__ to work around the problem, if the workaround is
|
|
* known to be needed.
|
|
* Written by Jim Meyering, Eric Blake and Pádraig Brady.
|
|
* (See https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66425 for the details)
|
|
*/
|
|
#if 3 < __GNUC__ + (4 <= __GNUC_MINOR__)
|
|
# define __ignore_value(x) ({ __typeof__ (x) __x = (x); (void) __x; })
|
|
#else
|
|
# define __ignore_value(x) ((void) (x))
|
|
#endif
|
|
|
|
#endif /* __CR_COMPILER_H__ */
|