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Fixed and cleaned up select.h.

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Exports now the prototype correctly in C++.


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@1735 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Axel Dörfler 2002-10-28 17:49:41 +00:00
parent e0060f3ff2
commit 493130b326
1 changed files with 39 additions and 30 deletions
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69
headers/posix/sys/select.h
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@ -1,50 +1,59 @@
/* select.h */
#ifndef _SYS_SELECT_H
#define _SYS_SELECT_H
/*
** Distributed under the terms of the OpenBeOS License.
*/
#include <sys/time.h> /* for struct timeval */
/*
* You can define your own FDSETSIZE if you want more bits
#include <sys/time.h>
/* If FD_SET is already defined, only the select() prototype is
* exported in this header.
*/
#ifndef FD_SET
/* You can define your own FDSETSIZE if you need more bits - but
* it should be enough for most uses.
*/
#ifndef FD_SETSIZE
#define FD_SETSIZE 1024
#endif /* FD_SETSIZE */
# define FD_SETSIZE 1024
#endif
/* compatability with BSD */
#define NBBY 8 /* number of bits in a byte */
/* Compatibily only: use FD_SETSIZE instead */
#ifndef FDSETSIZE
# define FDSETSIZE FD_SETSIZE
#endif
/* compatibility with BSD */
#define NBBY 8 /* number of bits in a byte */
typedef unsigned long fd_mask;
#ifndef howmany
#define howmany(x, y) (((x) + ((y) - 1)) / (y))
# define howmany(x, y) (((x) + ((y) - 1)) / (y))
#endif
/*
* Compatibily only: use FD_SETSIZE instead
*/
#ifndef FDSETSIZE
#define FDSETSIZE FD_SETSIZE
#endif /* FDSETSIZE */
#define NFDBITS 32
#define NFDBITS (sizeof(fd_mask) * NBBY)
typedef struct fd_set {
unsigned mask[FDSETSIZE / NFDBITS];
fd_mask bits[howmany(FD_SETSIZE, NFDBITS)];
} fd_set;
#define _FDMSKNO(fd) ((fd) / NFDBITS)
#define _FDBITNO(fd) ((fd) % NFDBITS)
#define _FD_BITSINDEX(fd) ((fd) / NFDBITS)
#define _FD_BIT(fd) (1L << ((fd) % NFDBITS))
#define FD_ZERO(setp) memset((setp)->mask, 0, sizeof((setp)->mask))
#define FD_SET(fd, setp) ((setp)->mask[_FDMSKNO(fd)] |= (1 << (_FDBITNO(fd))))
#define FD_CLR(fd, setp) ((setp)->mask[_FDMSKNO(fd)] &= ~(1 << (_FDBITNO(fd))))
#define FD_ISSET(fd, setp) ((setp)->mask[_FDMSKNO(fd)] & (1 << (_FDBITNO(fd))))
#define FD_ZERO(set) memset((set), 0, sizeof(fd_set))
#define FD_SET(fd, set) ((set)->bits[_FD_BITSINDEX(fd)] |= _FD_BIT(fd))
#define FD_CLR(fd, set) ((set)->bits[_FD_BITSINDEX(fd)] &= ~_FD_BIT(fd))
#define FD_ISSET(fd, set) ((set)->bits[_FD_BITSINDEX(fd)] & _FD_BIT(fd))
int select(int nbits, struct fd_set *rbits,
struct fd_set *wbits,
struct fd_set *ebits,
struct timeval *timeout);
#endif /* FD_SET */
#endif /* _SYS_SELECT_H */
extern
#ifdef __cplusplus
"C"
#endif
int select(int nbits, struct fd_set *rbits, struct fd_set *wbits,
struct fd_set *ebits, struct timeval *timeout);
#endif /* _SYS_SELECT_H */