#include <boost/thread/thread.hpp>
#include <boost/thread/xtime.hpp>
#include <iostream>

struct thread_alarm
{
   thread_alarm(int secs) : m_secs(secs) { }
   void operator()()
   {
       boost::xtime xt;
       boost::xtime_get(&xt, boost::TIME_UTC);
       xt.sec += m_secs;

       boost::thread::sleep(xt);

       std::cout << "alarm sounded..." << std::endl;
   }

   int m_secs;
};

int main(int argc, char* argv[])
{
   int secs = 5;
   std::cout << "setting alarm for 5 seconds..." << std::endl;
   thread_alarm alarm(secs);
   boost::thread thrd(alarm);
   thrd.join();
}