poll.h File Reference

POSIX poll API (<poll.h>) More...

#include <zephyr/sys/fdtable.h>
#include <zephyr/toolchain.h>

Include dependency graph for poll.h:

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Macros
#define	_NFDS_T_DECLARED
#define	__nfds_t_defined
#define	pollfd   zvfs_pollfd
	Poll file descriptor structure (alias for zvfs_pollfd).
#define	POLLIN   ZVFS_POLLIN
	Data other than high-priority data may be read without blocking.
#define	POLLRDNORM   ZVFS_POLLRDNORM
	Normal data may be read without blocking.
#define	POLLRDBAND   ZVFS_POLLRDBAND
	Priority data may be read without blocking.
#define	POLLPRI   ZVFS_POLLPRI
	High-priority data may be read without blocking.
#define	POLLOUT   ZVFS_POLLOUT
	Normal data may be written without blocking.
#define	POLLWRNORM   ZVFS_POLLWRNORM
	Equivalent to POLLOUT.
#define	POLLWRBAND   ZVFS_POLLWRBAND
	Priority data may be written.
#define	POLLERR   ZVFS_POLLERR
	An error has occurred on the file descriptor (output only).
#define	POLLHUP   ZVFS_POLLHUP
	The file descriptor has been hung up (output only).
#define	POLLNVAL   ZVFS_POLLNVAL
	The file descriptor is not open (output only).

Typedefs
typedef int	nfds_t
	Type for the number of file descriptors passed to poll().

Functions
	BUILD_ASSERT (ZVFS_POLLWRNORM==ZVFS_POLLOUT, "POLLWRNORM must be equal to POLLOUT")
int	poll (struct zvfs_pollfd *fds, nfds_t nfds, int timeout)
	Wait for events on a set of file descriptors.

Detailed Description

POSIX poll API (<poll.h>)

Provides the poll() function and associated poll event flags for multiplexed I/O on multiple file descriptors.

See also

POSIX.1-2017 <poll.h>

Definition in file poll.h.

Macro Definition Documentation

__nfds_t_defined

#define __nfds_t_defined

Definition at line 36 of file poll.h.

_NFDS_T_DECLARED

#define _NFDS_T_DECLARED

Definition at line 35 of file poll.h.