[boost] [thread] shouldn't at_thread_exit work on the main thread?

Subject: [boost] [thread] shouldn't at_thread_exit work on the main thread?
From: vicente.botet (vicente.botet_at_[hidden])
Date: 2008-11-10 11:34:13

Hi,

in the following example mycallable1 is not called at exit of the main 
thread. Shouldn't at_thread_exit work on the main thread?
What is wrong?

Best,

Vicente

    #include <boost/thread.hpp>
    #include <iostream>

    struct mycallable1
    {
        void operator()() const {
            std::cout << "mycallable1" << std::endl;
        };
    };
    struct mycallable2
    {
        void operator()() const {
            std::cout << "mycallable2" << std::endl;
        };
    };

    void my_thread() {
        std::cout << "my_thread" << std::endl;
        mycallable1 x;
        boost::this_thread::at_thread_exit(x);
    }

    int main() {
        mycallable2 x;
        boost::this_thread::at_thread_exit(x);

        boost::thread th(my_thread);
        th.join();
        return 0;
    }

Output:
my_thread
mycallable1

EXIT STATUS: 0