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#if defined(__i386__) || defined(__x86_64__)
#define barrier() asm volatile("" ::: "memory")
#define mb() __sync_synchronize()
#define smp_mb() mb()
# define smp_rmb() barrier()
# define smp_wmb() barrier()
/* Weak barriers should be used. If not - it's a bug */
# define rmb() abort()
# define wmb() abort()
#else
#error Please fill in barrier macros
#endif
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