jediacademy/code/qcommon/timing.h

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663 B
C
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2013-04-04 22:35:38 +00:00
class timing_c
{
private:
__int64 start;
__int64 end;
int reset;
public:
timing_c(void)
{
}
void Start()
{
const __int64 *s = &start;
__asm
{
push eax
push ebx
push edx
rdtsc
mov ebx, s
mov [ebx], eax
mov [ebx + 4], edx
pop edx
pop ebx
pop eax
}
}
int End()
{
const __int64 *e = &end;
__int64 time;
__asm
{
push eax
push ebx
push edx
rdtsc
mov ebx, e
mov [ebx], eax
mov [ebx + 4], edx
pop edx
pop ebx
pop eax
}
time = end - start;
if (time < 0)
{
time = 0;
}
return((int)time);
}
};
// end