4.1.5.4.2 : Le fichier timer.cpp
Développons le fichier timer.cpp :

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#include "timer.h"

#ifdef __i386
///Get the number of cycles since the begining of the program
/**	@return number of cycles since the begining of the program
*/
extern long unsigned int rdtsc(void) {
	long unsigned int x;
	__asm__ volatile ("rdtsc" : "=A" (x));
	return x;
}
#elif defined __amd64
///Get the number of cycles since the begining of the program
/**	@return number of cycles since the begining of the program
*/
extern long unsigned int rdtsc(void) {
	long unsigned int a, d;
	__asm__ volatile ("rdtsc" : "=a" (a), "=d" (d));
	return (d<<32) | a;
}
#endif


Le fichier timer.cpp complet.

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/***************************************
	Auteur : Pierre Aubert
	Mail : pierre.aubert@lapp.in2p3.fr
	Licence : CeCILL-C
****************************************/


#include "timer.h"

#ifdef __i386
///Get the number of cycles since the begining of the program
/**	@return number of cycles since the begining of the program
*/
extern long unsigned int rdtsc(void) {
	long unsigned int x;
	__asm__ volatile ("rdtsc" : "=A" (x));
	return x;
}
#elif defined __amd64
///Get the number of cycles since the begining of the program
/**	@return number of cycles since the begining of the program
*/
extern long unsigned int rdtsc(void) {
	long unsigned int a, d;
	__asm__ volatile ("rdtsc" : "=a" (a), "=d" (d));
	return (d<<32) | a;
}
#endif


Vous pouvez télécharger le fichier ici.