44 lines
1.2 KiB
C
44 lines
1.2 KiB
C
/*
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* This file is part of the UCB release of Plan 9. It is subject to the license
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* terms in the LICENSE file found in the top-level directory of this
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* distribution and at http://akaros.cs.berkeley.edu/files/Plan9License. No
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* part of the UCB release of Plan 9, including this file, may be copied,
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* modified, propagated, or distributed except according to the terms contained
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* in the LICENSE file.
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*/
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#ifndef __SELECT_H
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#define __SELECT_H
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#ifndef _BSD_EXTENSION
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This header file is an extension to ANSI/POSIX
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#endif
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#pragma lib "/$M/lib/ape/libap.a"
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#ifndef _FD_SET_T
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#define _FD_SET_T
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/* BSD select, and adjunct types and macros */
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/* assume 96 fds is sufficient for fdset size */
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typedef struct fd_set {
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long fds_bits[3];
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} fd_set;
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#define FD_SET(n,p) ((p)->fds_bits[(n)>>5] |= (1 << ((n) &0x1f)))
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#define FD_CLR(n,p) ((p)->fds_bits[(n)>>5] &= ~(1 << ((n) &0x1f)))
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#define FD_ISSET(n,p) ((p)->fds_bits[(n)>>5] & (1 << ((n) &0x1f)))
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#define FD_ZERO(p) ((p)->fds_bits[0] =0, (p)->fds_bits[1] =0, (p)->fds_bits[2] =0)
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#endif
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#ifdef __cplusplus
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extern "C" {
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#endif
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extern int select(int, fd_set*, fd_set*, fd_set*, struct timeval *);
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#ifdef __cplusplus
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}
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#endif
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#endif
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