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1. Hide the internals of struct fd_set in standard namespaces.

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2. Avoid referencing bcopy() and bzero(), since they may not be in
   scope.

Request by:     bde (1)
Submitted by:   wollman (2)
Reviewed by:	archie, bde
PR:		43270
This commit is contained in:
Mike Barcroft 2002-11-17 16:22:18 +00:00
parent 20fab86349
commit 65cf1bf2f0
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=107019
1 changed files with 15 additions and 5 deletions
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20
sys/sys/select.h
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@ -79,18 +79,28 @@ typedef __sigset_t sigset_t;
#endif
typedef struct fd_set {
__fd_mask fds_bits[_howmany(FD_SETSIZE, _NFDBITS)];
__fd_mask __fds_bits[_howmany(FD_SETSIZE, _NFDBITS)];
} fd_set;
#if __BSD_VISIBLE
#define fds_bits __fds_bits
#endif
#define __fdset_mask(n) ((fd_mask)1 << ((n) % _NFDBITS))
#define __fdset_mask(n) ((__fd_mask)1 << ((n) % _NFDBITS))
#define FD_CLR(n, p) ((p)->fds_bits[(n)/_NFDBITS] &= ~__fdset_mask(n))
#if __BSD_VISIBLE
/* XXX bcopy() not in scope, so <strings.h> is required; see also FD_ZERO(). */
#define FD_COPY(f, t) bcopy(f, t, sizeof(*(f)))
#define FD_COPY(f, t) (void)(*(t) = *(f))
#endif
#define FD_ISSET(n, p) ((p)->fds_bits[(n)/_NFDBITS] & __fdset_mask(n))
#define FD_SET(n, p) ((p)->fds_bits[(n)/_NFDBITS] |= __fdset_mask(n))
#define FD_ZERO(p) bzero(p, sizeof(*(p)))
#define FD_ZERO(p) do { \
fd_set *_p; \
__size_t _n; \
\
_p = (p); \
_n = _howmany(FD_SETSIZE, _NFDBITS); \
while (_n > 0) \
_p->__fds_bits[--_n] = 0; \
} while (0)
#ifndef _KERNEL
struct timeval;