Use of C++11 atomic to handle shared resource under multi threaded environment.

Cpp11Atomic.cpp

// ConsoleApplication1.cpp : Defines the entry point for the console application.
//

#include "stdafx.h"
#include <iostream>
#include <thread>
#include <atomic>

using namespace std;

void bar(int id, int& value)
{
	value++;
	cout<<"id ["<<id<<"] : "<<value<<endl;
}

void atomic_bar(int id, atomic<int>& atomicValue)
{
	
	atomicValue++;
	cout<<"atomic id ["<<id<<"] : "<<atomicValue<<endl;
}


int _tmain(int argc, _TCHAR* argv[])
{
	cout.sync_with_stdio(true); //is this really works under VS2012?
	
	int count = 0;

	thread t1(bar, 1, count);
	thread t2(bar, 2, count);
	thread t3(bar, 3, count);

	t1.join();
	t2.join();
	t3.join();

	cout<<"<== atomic test ==>"<<endl;

	atomic<int> atomic_count(0);

	thread s1(atomic_bar, 1, std::ref(atomic_count));
	thread s2(atomic_bar, 2, std::ref(atomic_count));
	thread s3(atomic_bar, 3, std::ref(atomic_count));

	s1.join();
	s2.join();
	s3.join();

	return 0;
}

//program output goes...

//id [1] : 1
//id [2] : 1
//id [3] : 1
//<== atomic test ==>
//atomic id [1] : 1
//atomic id [2] : 2
//atomic id [3] : 3
//계속하려면 아무 키나 누르십시오 . . .