#include <boost/thread/thread.hpp>

boost::condition_variable x;

void Wait();

int main()
{
    boost::thread t = boost::thread(Wait);
    while(true)
        x.notify_one();
    return 0;
}

void Wait()
{
    boost::mutex m;
    boost::unique_lock<boost::mutex> lock(m);
    while(true)
        x.wait(lock);
}