mirror of
https://github.com/checkpoint-restore/criu
synced 2025-08-22 09:58:09 +00:00
e319aaa0cf
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com> Reviewed-by: Dmitry Safonov <0x7f454c46@gmail.com> Signed-off-by: Andrei Vagin <avagin@virtuozzo.com>
102 lines
2.7 KiB
C
102 lines
2.7 KiB
C
#ifndef __CR_COMPILER_H__
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#define __CR_COMPILER_H__
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/*
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* Various definitions for success build,
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* picked from various places, mostly from
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* the linux kernel.
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*/
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#define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
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#define BUILD_BUG_ON(condition) ((void)sizeof(char[1 - 2*!!(condition)]))
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#define ASSIGN_TYPED(a, b) do { (a) = (typeof(a))(b); } while (0)
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#define ASSIGN_MEMBER(a, b, m) do { ASSIGN_TYPED((a)->m, (b)->m); } while (0)
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#define __stringify_1(x...) #x
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#define __stringify(x...) __stringify_1(x)
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#define NORETURN __attribute__((__noreturn__))
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#define __packed __attribute__((__packed__))
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#define __used __attribute__((__used__))
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#define __maybe_unused __attribute__((unused))
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#define __always_unused __attribute__((unused))
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#define __section(S) __attribute__ ((__section__(#S)))
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#ifndef __always_inline
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# define __always_inline inline __attribute__((always_inline))
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#endif
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#define likely(x) __builtin_expect(!!(x), 1)
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#define unlikely(x) __builtin_expect(!!(x), 0)
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#ifndef always_inline
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# define always_inline __always_inline
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#endif
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#ifndef noinline
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# define noinline __attribute__((noinline))
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#endif
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#define __aligned(x) __attribute__((aligned(x)))
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/*
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* Macro to define stack alignment.
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* aarch64 requires stack to be aligned to 16 bytes.
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*/
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#define __stack_aligned__ __attribute__((aligned(16)))
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#ifndef offsetof
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# define offsetof(TYPE, MEMBER) ((size_t) &((TYPE *)0)->MEMBER)
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#endif
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#define barrier() asm volatile("" ::: "memory")
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#define container_of(ptr, type, member) ({ \
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const typeof( ((type *)0)->member ) *__mptr = (ptr); \
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(type *)( (char *)__mptr - offsetof(type,member) );})
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#ifndef FIELD_SIZEOF
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# define FIELD_SIZEOF(t, f) (sizeof(((t*)0)->f))
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#endif
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#define __round_mask(x, y) ((__typeof__(x))((y) - 1))
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#define round_up(x, y) ((((x) - 1) | __round_mask(x, y)) + 1)
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#define round_down(x, y) ((x) & ~__round_mask(x, y))
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#define DIV_ROUND_UP(n,d) (((n) + (d) - 1) / (d))
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#define ALIGN(x, a) (((x) + (a) - 1) & ~((a) - 1))
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#define min(x, y) ({ \
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typeof(x) _min1 = (x); \
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typeof(y) _min2 = (y); \
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(void) (&_min1 == &_min2); \
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_min1 < _min2 ? _min1 : _min2; })
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#define max(x, y) ({ \
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typeof(x) _max1 = (x); \
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typeof(y) _max2 = (y); \
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(void) (&_max1 == &_max2); \
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_max1 > _max2 ? _max1 : _max2; })
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#define min_t(type, x, y) ({ \
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type __min1 = (x); \
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type __min2 = (y); \
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__min1 < __min2 ? __min1: __min2; })
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#define max_t(type, x, y) ({ \
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type __max1 = (x); \
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type __max2 = (y); \
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__max1 > __max2 ? __max1: __max2; })
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#define SWAP(x, y) \
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do { \
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typeof(x) ____val = x; \
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x = y; \
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y = ____val; \
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} while (0)
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#define is_log2(v) (((v) & ((v) - 1)) == 0)
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#endif /* __CR_COMPILER_H__ */
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