36 lines
1.0 KiB
C
36 lines
1.0 KiB
C
/*
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* Not all machines define FD_SET in sys/types.h
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*/
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#ifndef NTP_SELECT_H
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#define NTP_SELECT_H /* note: tested by include/l_stdlib.h */
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/* Was: (defined(RS6000)||defined(SYS_PTX))&&!defined(_BSD) */
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/* Could say: !defined(FD_SET) && defined(HAVE_SYS_SELECT_H) */
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/* except FD_SET can legitimately be a typedef... */
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#if defined(HAVE_SYS_SELECT_H) && !defined(_BSD)
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# ifndef SYS_VXWORKS
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# include <sys/select.h>
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# else
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# include <sockLib.h>
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extern int select(int width, fd_set *pReadFds, fd_set *pWriteFds,
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fd_set *pExceptFds, struct timeval *pTimeOut);
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# endif
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#endif
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#if !defined(FD_SET)
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# define NFDBITS 32
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# define FD_SETSIZE 32
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# define FD_SET(n, p) ((p)->fds_bits[(n)/NFDBITS] |= (1 << ((n) % NFDBITS)))
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# define FD_CLR(n, p) ((p)->fds_bits[(n)/NFDBITS] &= ~(1 << ((n) % NFDBITS)))
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# define FD_ISSET(n, p) ((p)->fds_bits[(n)/NFDBITS] & (1 << ((n) % NFDBITS)))
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# define FD_ZERO(p) memset((p), 0, sizeof(*(p)))
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#endif
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#if defined(VMS)
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typedef struct {
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unsigned int fds_bits[1];
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} fd_set;
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#endif
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#endif /* NTP_SELECT_H */
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