> Nonblocking I/O has not much to do with it, you don't necessarily need > nonblocking I/O if you have working poll(2) or select(2). > > It is a limitation of OS X. Every other platform with kqueue(2) and all > I am aware of with poll(2) support it on all file descriptors. OS X > doesn't support it on anything other than sockets - so not on ttys, not > on files, not anything except sockets. > > This is annoying because it means you can't manage tty file descriptors > or file descriptors linked to devices such as /dev/null (both of which > are commonly used for eg stdout) with libevent unless you force it to > use select. >
Correct me if I'm wrong here, but while you can technically have a file descriptor set to non-blocking, you are still limited to flush operations which result in CPU waits. This can result in blocking. *********************************************************************** To unsubscribe, send an e-mail to majord...@freehaven.net with unsubscribe libevent-users in the body.
