#include <iostream>
#include <thread>
#include <mutex>
#include <chrono> // For chrono::milliseconds

using namespace std ;

mutex myMutex ;
int shared_data = 0;

void worker_function1(int id)
{
	try
	{
		myMutex.lock() ;
        int x1 = 3 ;
		for (int i1 = 1; i1 <= 5; ++i1)
		{
			cout << "worker_function1: i1 " << i1 << endl ;
			if ( i1 == x1 )
			  throw x1 ;
		} //for
		myMutex.unlock() ;
   }
   catch( int& e1 )
   {
   }

}

void worker_function2(int id)
{
	try
	{
		myMutex.lock() ;
        int x1 = 3 ;
		for (int i1 = 1; i1 <= 5; ++i1)
		{
			cout << "worker_function2: i1 " << i1 << endl ;
			if ( i1 == x1 )
			  throw x1 ;
		} //for
		myMutex.unlock() ;
   }
   catch( int& e1 )
   {
   }

}



int main()
{
    thread t1(worker_function1, 1);
    thread t2(worker_function2, 2);

    t1.join();
    t2.join();

    cout << "Final shared_data: " << shared_data << endl;

    return 0;
}