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45 lines
863 B
45 lines
863 B
#ifndef GET_TIME_H
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#define GET_TIME_H
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#include <time.h>
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#include <sys/time.h>
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#include <stdio.h>
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#ifndef WASM
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#ifndef CPU_FREQ
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#define CPU_FREQ 1000
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#endif
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#endif
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static unsigned long long
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get_time()
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{
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#if 0
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unsigned long long int ret = 0;
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unsigned int cycles_lo;
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unsigned int cycles_hi;
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__asm__ volatile ("rdtsc" : "=a" (cycles_lo), "=d" (cycles_hi));
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ret = (unsigned long long int)cycles_hi << 32 | cycles_lo;
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return ret;
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#else
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struct timeval Tp;
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int stat;
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stat = gettimeofday(&Tp, NULL);
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if (stat != 0) printf("Error return from gettimeofday: %d", stat);
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return (Tp.tv_sec * 1000000 + Tp.tv_usec);
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#endif
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}
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static inline void
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print_time(unsigned long long s, unsigned long long e)
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{
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#if 0
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printf("%llu cycs, %llu us\n", e - s, (e - s) / CPU_FREQ);
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#else
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fprintf(stdout, "%llu us\n", e - s);
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#endif
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}
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#endif /* GET_TIME_H */
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