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 */
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 */
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#define CS_ENTER_BARRIER()  __asm__ volatile ("" ::: "memory")
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#define CS_ENTER_BARRIER()  __asm__ volatile ("" ::: "memory")
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#define CS_LEAVE_BARRIER()  __asm__ volatile ("" ::: "memory")
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#define CS_LEAVE_BARRIER()  __asm__ volatile ("" ::: "memory")
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#ifdef __STRONG_ORDERING__
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#define memory_barrier()
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#define read_barrier()
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#define write_barrier()
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#else
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#define memory_barrier()    __asm__ volatile ("mfence\n" ::: "memory")
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#define memory_barrier()    __asm__ volatile ("mfence\n" ::: "memory")
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#define read_barrier()      __asm__ volatile ("sfence\n" ::: "memory")
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#define read_barrier()      __asm__ volatile ("sfence\n" ::: "memory")
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#define write_barrier()     __asm__ volatile ("lfence\n" ::: "memory")
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#define write_barrier()     __asm__ volatile ("lfence\n" ::: "memory")
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#endif
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#endif
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#endif