Threads

class X
{
public:
void do_lengthy_work();
};
X my_x;
std::thread t(&X::do_lengthy_work,&my_x);

• instances of std::thread are movable, even though they aren’t copyable
• std::thread::hardware_concurrency() . This function returns an indication of the number of threads that can truly run concurrently for a given execution of a program. On a multicore system it might be the number of CPU cores