2 * Not all machines define FD_SET in sys/types.h
5 #define NTP_SELECT_H /* note: tested by include/l_stdlib.h */
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)
12 # include <sys/select.h>
15 extern int select(int width, fd_set *pReadFds, fd_set *pWriteFds,
16 fd_set *pExceptFds, struct timeval *pTimeOut);
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)))
31 unsigned int fds_bits[1];
35 #endif /* NTP_SELECT_H */