On Thu, Oct 18, 2012 at 09:13:28AM +0200, Svante Signell wrote: > On Tue, 2012-10-16 at 23:40 +0200, Samuel Thibault wrote: > > Hello, > > > > Svante Signell, le Fri 24 Aug 2012 04:52:15 +0200, a écrit : > > > - file descriptors were read, sorted, and the good ones registered.
Why sorted ? How do you know the "good ones" from the others ? > > I have to say I don't understand why doing it. If there is any file > > descriptor which is not valid, the whole call has to return EBADF, > > that's what POSIX asks. > > According to POSIX that is correct for select(). However, I think you > missed the line below in my message: > Note: Only for the poll case, select was not yet implemented! The poll() call was added after select() ... > And there POSIX says: > The poll() function shall support regular files, terminal and > pseudo-terminal devices, FIFOs, pipes, sockets and [XSR] [Option Start] > STREAMS-based files. [Option End] The behavior of poll() on elements of > fds that refer to other types of file is unspecified. > and > RETURN VALUE > Upon successful completion, poll() shall return a non-negative > value. A positive value indicates the total number of file > descriptors that have been selected (that is, file descriptors > for which the revents member is non-zero). I also still don't see the point. -- Richard Braun
