mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-30 21:23:52 +08:00
38 lines
1.5 KiB
C
38 lines
1.5 KiB
C
/* Copyright (C) 1997-2023 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
|
|
The GNU C Library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Lesser General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 2.1 of the License, or (at your option) any later version.
|
|
|
|
The GNU C Library is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public
|
|
License along with the GNU C Library; if not, see
|
|
<https://www.gnu.org/licenses/>. */
|
|
|
|
#ifndef _SYS_SELECT_H
|
|
# error "Never use <bits/select.h> directly; include <sys/select.h> instead."
|
|
#endif
|
|
|
|
|
|
/* We don't use `memset' because this would require a prototype and
|
|
the array isn't too big. */
|
|
#define __FD_ZERO(s) \
|
|
do { \
|
|
unsigned int __i; \
|
|
fd_set *__arr = (s); \
|
|
for (__i = 0; __i < sizeof (fd_set) / sizeof (__fd_mask); ++__i) \
|
|
__FDS_BITS (__arr)[__i] = 0; \
|
|
} while (0)
|
|
#define __FD_SET(d, s) \
|
|
((void) (__FDS_BITS (s)[__FD_ELT(d)] |= __FD_MASK(d)))
|
|
#define __FD_CLR(d, s) \
|
|
((void) (__FDS_BITS (s)[__FD_ELT(d)] &= ~__FD_MASK(d)))
|
|
#define __FD_ISSET(d, s) \
|
|
((__FDS_BITS (s)[__FD_ELT (d)] & __FD_MASK (d)) != 0)
|