/*Racing example*/
#include <iostream>
#include <boost/thread.hpp>
//#include <boost/atomic.hpp>
#include <boost/thread/mutex.hpp>
using namespace boost;
using namespace std;

int counter=0;
//boost::atomic<int> counter(0);
//int counter;
boost::mutex mtx;
void worker () {
	for (int i = 0;i<10000;i++) {
		mtx.lock();
		++counter;
		mtx.unlock();
	}
}

int main() {
	thread *t1 = new thread(worker);
	thread t2(worker);
	thread *t3 = new thread(worker);
	thread *t4 = new thread(worker);

	t1->join();
	t2.join();
	t3->join();
	t4->join();
	cout << "Final counter=" << counter << endl;
	
	return 0;
}