1 /* $NetBSD: ntp_select.h,v 1.5 2020/05/25 20:47:20 christos Exp $ */ 2 3 /* 4 * Not all machines define FD_SET in sys/types.h 5 */ 6 #ifndef NTP_SELECT_H 7 #define NTP_SELECT_H /* note: tested by include/l_stdlib.h */ 8 9 /* Was: (defined(RS6000)||defined(SYS_PTX))&&!defined(_BSD) */ 10 /* Could say: !defined(FD_SET) && defined(HAVE_SYS_SELECT_H) */ 11 /* except FD_SET can legitimately be a typedef... */ 12 #if defined(HAVE_SYS_SELECT_H) && !defined(_BSD) 13 # ifndef SYS_VXWORKS 14 # include <sys/select.h> 15 # else 16 # include <sockLib.h> 17 extern int select(int width, fd_set *pReadFds, fd_set *pWriteFds, 18 fd_set *pExceptFds, struct timeval *pTimeOut); 19 # endif 20 #endif 21 22 #if !defined(FD_SET) 23 # define NFDBITS 32 24 # define FD_SETSIZE 32 25 # define FD_SET(n, p) ((p)->fds_bits[(n)/NFDBITS] |= (1 << ((n) % NFDBITS))) 26 # define FD_CLR(n, p) ((p)->fds_bits[(n)/NFDBITS] &= ~(1 << ((n) % NFDBITS))) 27 # define FD_ISSET(n, p) ((p)->fds_bits[(n)/NFDBITS] & (1 << ((n) % NFDBITS))) 28 # define FD_ZERO(p) memset((p), 0, sizeof(*(p))) 29 #endif 30 31 #if defined(VMS) 32 typedef struct { 33 unsigned int fds_bits[1]; 34 } fd_set; 35 #endif 36 37 #endif /* NTP_SELECT_H */ 38