68 lines
720 B
C++
68 lines
720 B
C++
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class timing_c
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{
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private:
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int64_t start;
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int64_t end;
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int reset;
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public:
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timing_c(void)
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{
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}
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void Start()
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{
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#ifdef _MSVC_VER
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const int64_t *s = &start;
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__asm
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{
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push eax
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push ebx
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push edx
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rdtsc
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mov ebx, s
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mov [ebx], eax
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mov [ebx + 4], edx
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pop edx
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pop ebx
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pop eax
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}
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#else
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asm("rdtsc" : "=A"(start));
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#endif
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}
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int End()
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{
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int64_t time;
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#ifdef _MSVC_VER
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const int64_t *e = &end;
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__asm
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{
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push eax
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push ebx
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push edx
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rdtsc
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mov ebx, e
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mov [ebx], eax
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mov [ebx + 4], edx
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pop edx
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pop ebx
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pop eax
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}
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#else
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asm("rdtsc" : "=A"(time));
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#endif
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time = end - start;
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if (time < 0)
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{
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time = 0;
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}
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return((int)time);
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}
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};
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// end
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