Events for the poll() function

Masks representing event types for poll() More...

Macros
#define	POLLRDNORM   (1 << 0)
	Normal data may be read.
#define	POLLRDBAND   (1 << 1)
	Priority data may be read.
#define	POLLPRI   (1 << 2)
	High-priority data may be read.
#define	POLLOUT   (1 << 3)
	Normal data may be written.
#define	POLLWRNORM   POLLOUT
	Normal data may be written.
#define	POLLWRBAND   (1 << 4)
	Priority data may be written.
#define	POLLERR   (1 << 5)
	Error has occurred (revents only)
#define	POLLHUP   (1 << 6)
	Peer disconnected (revents only)
#define	POLLNVAL   (1 << 7)
	Invalid fd (revents only)
#define	POLLIN   (POLLRDNORM | POLLRDBAND)
	Data other than high-priority data may be read.

Detailed Description

Masks representing event types for poll()

These are the events that can be set in the events or revents fields of the struct pollfd.

Macro Definition Documentation

POLLERR

#define POLLERR   (1 << 5)

Error has occurred (revents only)

POLLHUP

#define POLLHUP   (1 << 6)

Peer disconnected (revents only)

POLLIN

#define POLLIN   (POLLRDNORM | POLLRDBAND)

Data other than high-priority data may be read.

POLLNVAL

#define POLLNVAL   (1 << 7)

Invalid fd (revents only)

POLLOUT

#define POLLOUT   (1 << 3)

Normal data may be written.

POLLPRI

#define POLLPRI   (1 << 2)

High-priority data may be read.

POLLRDBAND

#define POLLRDBAND   (1 << 1)

Priority data may be read.

POLLRDNORM

#define POLLRDNORM   (1 << 0)

Normal data may be read.

POLLWRBAND

#define POLLWRBAND   (1 << 4)

Priority data may be written.

POLLWRNORM

#define POLLWRNORM   POLLOUT

Normal data may be written.