questions about non-blocking read()



hi,

i need to read incoming data from a serial port. i also need the read() to be non-blocking, such that my program can then check for any data to be send via the serial port. i followed some faqs on the net, set read() to be non-blocking, and got eagain errors popping out.

i realise that under non-blocking mode, it is normal to receive eagain errors. thus, the next thing i did, is try using select().


is select() also blocking? how do i use select()?
can someone provide me some codes or any directions to get started on select()?