boost-helloworld.cpp

#include <thread>
#include <iostream>

#if 0
void thread_func()
{
	std::cout << "Hello, parallel world!" << std::endl;
}
#else
class thread_hold 
{
	int val;
public:
	thread_hold(int i) : val(i) {}
	void operator() () { std::cout << "Hello, World " << val << std::endl; }
};
#endif

void daem()
{
	int i = 0;
	while (1) i++;
}

#define join_m(name) \
	if (name.joinable()) name.join()
#define detach_m(name) \
	if (name.joinable()) name.detach()

int main()
{
	std::thread th1(thread_hold(1));
	std::thread th2(thread_hold(2));
	std::thread th3(thread_hold(3));
	std::thread th4(thread_hold(4));
	
	std::thread daemon(daem);

	join_m(th1);
	join_m(th3);
	join_m(th2);
	join_m(th4);
	
	detach_m(daemon);

	int i = 100;
	while (i--);
	return 0;
}