22 lines
No EOL
681 B
C++
22 lines
No EOL
681 B
C++
#include <iostream>
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inline unsigned long getTimestamp(){
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unsigned hi,lo;
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asm ("rdtsc": "=a" (lo), "=d" (hi) );
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return ((unsigned long) lo ) | ((unsigned long) hi << 32);
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}
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inline unsigned long getTimestampVolatile(){
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unsigned hi,lo;
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asm volatile("rdtsc": "=a" (lo), "=d" (hi) );
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return ((unsigned long) lo )| ((unsigned long) hi << 32);
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}
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int main(void){
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unsigned long t1=getTimestamp();
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unsigned long t2=getTimestamp();
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std::cout << "Hello 1 -- " << t1 <<std::endl;
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std::cout << "Hello 2 -- " << t2 <<std::endl;
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std::cout << "Hello 3 -- " << getTimestamp() <<std::endl;
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std::cout << "Hello 4 -- " << getTimestamp() <<std::endl;
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} |