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10 lines
248 B
C
10 lines
248 B
C
#pragma once
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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 barrier
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// 内存屏障
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#define barrier() __asm__ __volatile__("" :: \
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: "memory");
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#endif |