ntp_select.h revision 290001 
1/*
2 * Not all machines define FD_SET in sys/types.h
3 */
4#ifndef NTP_SELECT_H
5#define NTP_SELECT_H	/* note: tested by include/l_stdlib.h */
6
7/* Was: (defined(RS6000)||defined(SYS_PTX))&&!defined(_BSD) */
8/* Could say: !defined(FD_SET) && defined(HAVE_SYS_SELECT_H) */
9/* except FD_SET can legitimately be a typedef... */
10#if defined(HAVE_SYS_SELECT_H) && !defined(_BSD)
11# ifndef SYS_VXWORKS
12#  include <sys/select.h>
13# else
14#  include <sockLib.h>
15extern	int	select(int width, fd_set *pReadFds, fd_set *pWriteFds,
16		       fd_set *pExceptFds, struct timeval *pTimeOut);
17# endif
18#endif
19
20#if !defined(FD_SET)
21# define NFDBITS	32
22# define FD_SETSIZE	32
23# define FD_SET(n, p)	((p)->fds_bits[(n)/NFDBITS] |= (1 << ((n) % NFDBITS)))
24# define FD_CLR(n, p)	((p)->fds_bits[(n)/NFDBITS] &= ~(1 << ((n) % NFDBITS)))
25# define FD_ISSET(n, p)	((p)->fds_bits[(n)/NFDBITS] & (1 << ((n) % NFDBITS)))
26# define FD_ZERO(p)	memset((p), 0, sizeof(*(p)))
27#endif
28
29#if defined(VMS)
30typedef struct {
31	unsigned int fds_bits[1];
32} fd_set;
33#endif
34
35#endif	/* NTP_SELECT_H */
36