#include <boost/interprocess/sync/named_semaphore.hpp>
using namespace boost::interprocess;

#include <boost/date_time/posix_time/posix_time.hpp>
using namespace boost::posix_time;
#include <iostream>
using namespace std;


int main() {

	const size_t iterations = 100000;
	named_semaphore sem1(open_only_t(), "sem1");
	named_semaphore sem2(open_only_t(), "sem2");
	
	ptime start = boost::posix_time::microsec_clock::local_time();
	for(size_t i = 0; i < iterations; ++i) {
		sem1.post();
		sem2.wait();
	}

	ptime end = boost::posix_time::microsec_clock::local_time();
	time_duration delta = end - start;
	
	double seconds = double(delta.total_nanoseconds())/1000000000.0;

	cout << "Total elapsed time: " << seconds << endl;;
	cout << "Time per iteration: " << (seconds/double(iterations)) << endl;
	return 0;
}