17 lines
220 B
C
17 lines
220 B
C
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static inline uint64_t rdtsc()
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{
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uint64_t tsc;
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__asm__ __volatile__(
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"lfence;"
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"rdtsc;"
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"shl $32, %%rdx;"
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"or %%rdx,%%rax"
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: "=a" (tsc)
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:
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: "%rcx", "%rdx", "memory"
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);
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return tsc;
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}
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