#include <iostream>
#include <string>
#include <stdlib.h>

// for multithreading
#include <boost/thread/mutex.hpp>
#include <boost/thread.hpp>
#include <boost/thread/xtime.hpp>
#include <boost/bind.hpp>

int totalthreads = 0;

boost::mutex io_mutex;          // The iostreams are not guaranteed to be thread-safe!
boost::mutex numthreads_mutex;  // for changing value of numthreads
boost::mutex threadid_mutex;    // for manipulating thread_id

using namespace std;

void updatethread(int id)
{
       {
       boost::mutex::scoped_lock scoped_lock(io_mutex);
       std::cout << " Thread:" << id << " running. " << std::endl;
       }

       // wait some secs 
       boost::xtime xt;
       boost::xtime_get(&xt, boost::TIME_UTC);
       boost::thread::sleep(xt);

       {
       boost::mutex::scoped_lock scoped_lock(io_mutex);
       std::cout << " Thread:" << id << " Exiting. "  << std::endl;
       }
}

main()
{
 boost::xtime xt;

 int totdids=99999;

 // ********************************
 // Main thread-spawning loop
 //
 for (int i=0; i<=totdids; i++)
     {
	 totalthreads++;

	 {
 	 boost::mutex::scoped_lock scoped_lock(io_mutex);
 	 std::cout << "MAIN:Thread:" << totalthreads <<  " being spawned... " 
	           << std::endl;
 	 }

     boost::thread t (boost::bind( updatethread, totalthreads) );

 	 // wait some seconds
   	 boost::xtime_get(&xt, boost::TIME_UTC);
     xt.nsec += 100;
     boost::thread::sleep(xt);

     t.join ();

     } // end thread-spawning for loop

 std::cout << "Done." << std::endl;
}