How to properly exit a thread?

["Xiangfei Jia" <xjianz gmail com>]

I created a thread like this:

    Glib::Thread *const read = Glib::Thread::create(sigc::mem_fun(node, &FrameNode::read_new_data), false);

Sometimes, when I exit from my program I got this error message:
GThread-ERROR **:
file gthread-posix.c: line 247 (): error 'Device or resource busy'
during 'pthread_cond_destroy ((pthread_cond_t *) cond)'
aborting...
Aborted


I looked at the Glib reference, I found out I should use 
throw Glib::Thread::Exit
();
to exit my thread. But I don't really know how to use this properly. Can anyone tell me how to use it please!!!!!

Thanks in advance!


Fei