select.h File Reference

#include <sys/cdefs.h>
#include <sys/_types.h>
#include <sys/_timespec.h>
#include <sys/_timeval.h>
#include <sys/_sigset.h>

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Data Structures
struct	fd_set

Macros
#define	__fdset_mask(n)   ((__fd_mask)1 << ((n) % _NFDBITS))
#define	_howmany(x, y)   (((x) + ((y) - 1)) / (y))
#define	_NFDBITS   (sizeof(__fd_mask) * 8) /* bits per mask */
#define	_SELECT_DECLARED
#define	_SIGSET_T_DECLARED
#define	FD_CLR(n, p)   ((p)->__fds_bits[(n)/_NFDBITS] &= ~__fdset_mask(n))
#define	FD_COPY(f, t)   (void)(*(t) = *(f))
#define	FD_ISSET(n, p)   (((p)->__fds_bits[(n)/_NFDBITS] & __fdset_mask(n)) != 0)
#define	FD_SET(n, p)   ((p)->__fds_bits[(n)/_NFDBITS] |= __fdset_mask(n))
#define	FD_SETSIZE   1024
#define	FD_ZERO(p)
#define	fds_bits   __fds_bits
#define	NFDBITS   _NFDBITS

Typedefs
typedef unsigned long	__fd_mask
typedef __fd_mask	fd_mask
typedef struct fd_set	fd_set
typedef __sigset_t	sigset_t

Functions
__BEGIN_DECLS int	pselect (int, fd_set *__restrict, fd_set *__restrict, fd_set *__restrict, const struct timespec *__restrict, const sigset_t *__restrict)
int	select (int, fd_set *, fd_set *, fd_set *, struct timeval *)

Macro Definition Documentation

__fdset_mask

#define __fdset_mask

(

n

)

((__fd_mask)1 << ((n) % _NFDBITS))

Definition at line 70 of file select.h.

_howmany

#define _howmany	(		x,
			y
	)		(((x) + ((y) - 1)) / (y))

Definition at line 61 of file select.h.

_NFDBITS

#define _NFDBITS   (sizeof(__fd_mask) * 8) /* bits per mask */

Definition at line 57 of file select.h.

_SELECT_DECLARED

#define _SELECT_DECLARED

Definition at line 91 of file select.h.

_SIGSET_T_DECLARED

#define _SIGSET_T_DECLARED

Definition at line 43 of file select.h.

FD_CLR

#define FD_CLR	(		n,
			p
	)		((p)->__fds_bits[(n)/_NFDBITS] &= ~__fdset_mask(n))

Definition at line 71 of file select.h.

FD_COPY

#define FD_COPY	(		f,
			t
	)		(void)(*(t) = *(f))

Definition at line 72 of file select.h.

FD_ISSET

#define FD_ISSET	(		n,
			p
	)		(((p)->__fds_bits[(n)/_NFDBITS] & __fdset_mask(n)) != 0)

Definition at line 73 of file select.h.

FD_SET

#define FD_SET	(		n,
			p
	)		((p)->__fds_bits[(n)/_NFDBITS] |= __fdset_mask(n))

Definition at line 74 of file select.h.

FD_SETSIZE

#define FD_SETSIZE   1024

Definition at line 54 of file select.h.

FD_ZERO

#define FD_ZERO

(

p

)

Value:

do {                                 \
        fd_set *_p;                                     \
        __size_t _n;                                    \
                                                        \
        _p = (p);                                       \
        _n = _howmany(FD_SETSIZE, _NFDBITS);            \
        while (_n > 0)                                  \
                _p->__fds_bits[--_n] = 0;               \
} while (0)

Definition at line 75 of file select.h.

fds_bits

#define fds_bits   __fds_bits

Definition at line 68 of file select.h.

NFDBITS

#define NFDBITS   _NFDBITS

Definition at line 58 of file select.h.

Typedef Documentation

__fd_mask

typedef unsigned long __fd_mask

Definition at line 39 of file select.h.

fd_mask

typedef __fd_mask fd_mask

Definition at line 40 of file select.h.

fd_set

typedef struct fd_set fd_set

sigset_t

typedef __sigset_t sigset_t

Definition at line 44 of file select.h.

Function Documentation

pselect()

__BEGIN_DECLS int pselect	(	int	,
		fd_set *	__restrict,
		fd_set *	__restrict,
		fd_set *	__restrict,
		const struct timespec *	__restrict,
		const sigset_t *	__restrict
	)

select()

int select	(	int	,
		fd_set *	,
		fd_set *	,
		fd_set *	,
		struct timeval *
	)