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matutter/cycles.c

Created October 3, 2014 23:49
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complete cycles counter
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cycles.c
#define PRSET1__ t1 = CPUCycleCounter();
#define PRSET2__ t2 = CPUCycleCounter();
#define PRDIFF__ t2 - t1
unsigned long long t1 =0, t2 =0;
static inline unsigned long long CPUCycleCounter(void) {
unsigned long long int x;
__asm__ volatile (".byte 0x0F, 0x31" : "=A" (x));
return x;
}
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