select() functionality ?

Hi,

I have a couple of questions about select() functionality.

1. Can I mix streams fds with non-streams fds in a single select()?

2. Is select() a thread safe call?
   I.e. can I do select() on fd1 in one thread and then another
   select() on fd2 in another thread?
   
3. Wouldn't the second select()on fd2 in the aforementioned scenario 
   cancel the first select() on fd1 ? 
   I.e. I would never get out of select() for fd1, even if data are there?


I'll appreciate any comments and/or pointers.

thanks,
--
Eugene


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