Kqueue () and O_NONBLOCK

Question

If you use kqueue (), should you set O_NONBLOCK to your file descriptors? In other words, kqueue () ensures that the next I / O operation in the finished file descriptor will not be blocked, regardless of whether O_NONBLOCK is set?

Answer 1

If you use kqueue (), should I set O_NONBLOCK to file descriptors?

Nope.

In other words, kqueue () ensures that the next I / O operation in the finished file descriptor will not be blocked, regardless of whether O_NONBLOCK is set?

Yes.

Answer 2

. , . read() return -1 errno EWOULDBLOCK. EWOULDBLOCK , kqueue , () (, , ) .