diff options
| -rw-r--r-- | lib/nonblocking.h | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/lib/nonblocking.h b/lib/nonblocking.h index f5835deddb..48a2da885a 100644 --- a/lib/nonblocking.h +++ b/lib/nonblocking.h @@ -26,8 +26,9 @@ - A write() call returns -1 with errno set to EAGAIN when it cannot transport the requested amount of data (but at most one pipe buffer) without blocking. - Non-blocking I/O is most useful for character devices. Whether it - also works on regular files and block devices is platform dependent. + Non-blocking I/O is most useful for character devices, pipes, and sockets. + Whether it also works on regular files and block devices is platform + dependent. There are three modern alternatives to non-blocking I/O: - use select() or poll() followed by read() or write() if the descriptor |