select.h File Reference

Select types. More...

Detailed Description

Select types.

See also

The Open Group Base Specification Issue 7, 2018 edition, <sys/select.h>

Definition in file select.h.

#include <string.h>
#include <sys/time.h>
#include "bitfield.h"

Include dependency graph for select.h:

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Data Structures
struct	fd_set
	The fd_set structure. More...

Macros
#define	POSIX_SELECT_THREAD_FLAG   (1U << 3)
	Thread Flags for POSIX select
#define	CONFIG_POSIX_FD_SET_SIZE   (16)
	Maximum number of file descriptors in an fd_set structure.
#define	FD_SETSIZE   (CONFIG_POSIX_FD_SET_SIZE)
	Maximum number of file descriptors in an fd_set structure.

Functions
static void	FD_CLR (int fd, fd_set *fdsetp)
	Removes a file descriptor from an fd_set if it is a member.
static int	FD_ISSET (int fd, fd_set *fdsetp)
	Checks if a file descriptor is a member of an fd_set
static void	FD_SET (int fd, fd_set *fdsetp)
	Adds a file descriptor from an fd_set if it is not already a member.
static void	FD_ZERO (fd_set *fdsetp)
	Initializes the descriptor set as an empty set.
int	select (int nfds, fd_set *readfds, fd_set *writefds, fd_set *errorfds, struct timeval *timeout)
	Examines the given file descriptor sets if they are ready for their respective operation.