Comparison of implementation of get timestamp in microsecond C between C ++11.

main.cpp

/*This gist only compare C way to get a timestamp clock_monotonic against C++11 way.*/

#include <iostream> 
#include <time.h>
#include <chrono>
#include <ctime>

void get_clock_time_us_time_h(unsigned long &val){
        struct timespec ts;
        clock_gettime(CLOCK_MONOTONIC, &ts);
	val = (ts.tv_sec * 1000000 + ts.tv_nsec / 1000);
}

void get_clock_time_us_std_time(unsigned long  &val){
    val = std::chrono::time_point_cast<std::chrono::microseconds>(std::chrono::steady_clock::now()).time_since_epoch().count();
}	

int main(){
	unsigned long time = 0;
	get_clock_time_us_time_h(time);	
	std::cout << time << std::endl;

	time = 0;

   	get_clock_time_us_std_time(time);
	std::cout << time << std::endl;
}