(in-package :sb-bsd-sockets) ;;; Miscellaneous things, placed here until I can find a logically more ;;; coherent place to put them ;;; I don't want to provide a complete interface to unix file ;;; operations, for example, but being about to set O_NONBLOCK on a ;;; socket is a necessary operation. ;;; XXX bad (sizeof (int) ==4 ) assumptions (defgeneric non-blocking-mode (socket)   (:documentation "Is SOCKET in non-blocking mode?")) #-win32 (defmethod non-blocking-mode ((socket socket))   (let ((fd (socket-file-descriptor socket)))     (sb-alien:with-alien ((arg integer))                          (> (logand                              (sockint::fcntl fd sockint::f-getfl arg)                              sockint::o-nonblock)                             0)))) #+win32 (defmethod non-blocking-mode ((socket socket)) 0) (defgeneric (setf non-blocking-mode) (non-blocking-p socket)   (:documentation "Put SOCKET in non-blocking mode - or not, according to NON-BLOCKING-P")) #-win32 (defmethod (setf non-blocking-mode) (non-blocking-p (socket socket))   (declare (optimize (speed 3)))   (let* ((fd (socket-file-descriptor socket))          (arg1 (the (signed-byte 32) (sockint::fcntl fd sockint::f-getfl 0)))          (arg2           (if non-blocking-p               (logior arg1 sockint::o-nonblock)             (logand (lognot sockint::o-nonblock) arg1))))     (when (= (the (signed-byte 32) -1)              (the (signed-byte 32)                (sockint::fcntl fd sockint::f-setfl arg2)))       (socket-error "fcntl"))     non-blocking-p)) #+win32 (defmethod (setf non-blocking-mode) (non-blocking-p (socket socket)) 0) ;;  (sb-alien:with-alien ((mode (unsigned 32))) ;;    (if non-blocking-p (setf mode 1)) ;;       (ioctlsocket socket FIONBIO mode)))