libc
/* $Id$ */
/* Copyright (c) 2014-2022 Pierre Pronchery <khorben@defora.org> */
/* This file is part of DeforaOS System libc */
/* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
* IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
* PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
* TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */
#ifndef LIBC_KERNEL_DARWIN_SYS_SELECT_H
# define LIBC_KERNEL_DARWIN_SYS_SELECT_H
/* constants */
# ifndef FD_SETSIZE
# define FD_SETSIZE 1024
# endif
/* types */
# ifndef fd_set
# define fd_set fd_set
typedef struct __fd_set
{
unsigned int fds_bits[(((FD_SETSIZE)
+ ((sizeof(unsigned int) << 3) - 1))
/ (sizeof(unsigned int) << 3))];
} fd_set;
# endif
# ifndef timeval
# define timeval timeval
struct timeval
{
time_t tv_sec;
suseconds_t tv_usec;
};
# endif
/* macros */
# define FD_CLR(fd, fdset) \
((fdset)->fds_bits[(fd) / (sizeof((fdset)->fds_bits[0]) << 3)] \
&= ~(1 << ((fd) & 0x7)))
# define FD_ISSET(fd, fdset) \
((fdset)->fds_bits[(fd) / (sizeof((fdset)->fds_bits[0]) << 3)] \
& (1 << ((fd) & 0x7)))
# define FD_SET(fd, fdset) \
((fdset)->fds_bits[(fd) / (sizeof((fdset)->fds_bits[0]) << 3)] \
|= (1 << ((fd) & 0x7)))
# define FD_ZERO(fdset) \
do \
{ \
size_t n = 0; \
fd_set * p = (fdset); \
\
while(n < (sizeof(p->fds_bits) \
/ sizeof(p->fds_bits[0]))) \
p->fds_bits[n++] = 0; \
} \
while(0)
#endif /* !LIBC_KERNEL_DARWIN_SYS_SELECT_H */