the assumption: you will actually exit the thread through 
the top-level thread function.

any premature exit of the thread handled at some lower 
level will bypass this code. so the program will 
occasionally malfunction in bizarre, possibly non-
reproducible ways. 

the file that the thread is supposed to open isn't 
accessible. the network connection it was managing was 
disconnected. Internal data structure consistency error. 
etc.

so how do you exit a thread prematurely? I'm not going to 
waste any more of my valuable time helping, go read it 
your self, bitch. <http://www.flounder.com/badprogram.htm>