Very Computer

1. Does select() return if the FD changed before select() was called?

Does a select() call return if the file descriptor it is watching changed
before the select() was called if the file descriptor hasn't been read or
written to since the change? For an illustration:

while ( select() ) {
    //Do some stuff here
    //One of the file descriptors select() watches happens to change right
here
    //Do some more stuff

Will select return on the next while() iteration because of the file
descriptor that changed in the middle of the loop? Or will it only watch for
descriptors that change since the select() call was made, which means my
program would block in select() without noticing the change that happened in
the last loop?

The man page doesn't seem to say much about this.

Also, if anyone can recommend any good books on programming TCP
clients/servers on POSIX and/or Win32 systems I'd appreciate it.

LKembel

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