Why does start_new_thread() create an extra process under Linux?

[Jp Calderone]

Jon Perez wrote:
> Running the following under Linux creates
> 3 processes instead of 2.  Once the started
> thread exits, 2 processes still remain.  Why?
> 

   Most likely, the "extra" you are seeing is an implementation detail 
of your platform's underlying thread library.  It probably exists to act 
as a scheduler or perform other administrative tasks for the "real" 
threads of your application.

   Jp