/* compile line:

   g++ -Wall -Wconversion --std=gnu++0x -o millis-timer millis-timer.cpp \
     -lboost_timer -lboost_date_time -lboost_thread-mt -lboost_chrono-mt -lboost_system

*/

#include <iostream>
#include <boost/chrono.hpp>
#include <boost/date_time.hpp>
#include <boost/timer/timer.hpp>
#include <boost/thread.hpp>

namespace bc  = boost::chrono;
namespace bt  = boost::timer;
namespace bpt = boost::posix_time;
namespace btt = boost::this_thread;

static bpt::ptime MillisecondsFromNow( const int milliseconds )
{
    const bpt::ptime now( bpt::microsec_clock::universal_time() );
    auto const offset = bpt::milliseconds( milliseconds );
    std::clog << "now=" << now << ", offset=" << offset << std::endl;
    return now + offset;
}

int main( int argc, char * argv [] )
{
    bt::nanosecond_type const ten_seconds( 10LL * 1000 * 1000 * 1000 );
    bt::cpu_timer timer;
    long count = 0;
    while ( true )
    {
        btt::sleep( MillisecondsFromNow( 1000 ) );
        // btt::sleep_until( bc::system_clock::now() + bc::milliseconds( 1000 ) );

        bt::cpu_times const elapsed_times( timer.elapsed() );
        bt::nanosecond_type const elapsed( elapsed_times.wall );

        if ( elapsed >= ten_seconds )
            break;

        count++;
    }

    std::cout << count << '\n';
}