From ffb96c090015f49059d146deefbbd7e1f6baa642 Mon Sep 17 00:00:00 2001 From: Eric Andersen Date: Thu, 6 Jul 2000 19:22:49 +0000 Subject: Some more major updates to further superate ucLibc from the kernel headers (the way it has been done in GNU libc). -Erik --- include/sys/select.h | 95 ++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 95 insertions(+) create mode 100644 include/sys/select.h (limited to 'include/sys/select.h') diff --git a/include/sys/select.h b/include/sys/select.h new file mode 100644 index 000000000..0972560b9 --- /dev/null +++ b/include/sys/select.h @@ -0,0 +1,95 @@ +/* `fd_set' type and related macros, and `select'/`pselect' declarations. + Copyright (C) 1996, 1997, 1998 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 Library General Public License as + published by the Free Software Foundation; either version 2 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 + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with the GNU C Library; see the file COPYING.LIB. If not, + write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ + +/* POSIX 1003.1g: 6.2 Select from File Descriptor Sets */ + +#ifndef _SYS_SELECT_H +#define _SYS_SELECT_H 1 + +#include + +/* Get definition of needed basic types. */ +#include + +/* Get __FD_* definitions. */ +#include + +/* Get __sigset_t. */ +#include + +/* Get definition of timer specification structures. */ +#define __need_timespec +#include + +__BEGIN_DECLS + +/* This declaration puts `struct timeval' in global scope even if + has not been included to define it. That way the + `select' prototype below will not conflict with a later definition + of `struct timeval'. */ +struct timeval; + +typedef __fd_mask fd_mask; + +/* Representation of a set of file descriptors. */ +typedef __fd_set fd_set; + +/* Maximum number of file descriptors in `fd_set'. */ +#define FD_SETSIZE __FD_SETSIZE + +#ifdef __USE_MISC +/* Number of bits per word of `fd_set' (some code assumes this is 32). */ +# define NFDBITS __NFDBITS +#endif + + +/* Access macros for `fd_set'. */ +#define FD_SET(fd, fdsetp) __FD_SET ((fd), (fdsetp)) +#define FD_CLR(fd, fdsetp) __FD_CLR ((fd), (fdsetp)) +#define FD_ISSET(fd, fdsetp) __FD_ISSET ((fd), (fdsetp)) +#define FD_ZERO(fdsetp) __FD_ZERO (fdsetp) + + +/* Check the first NFDS descriptors each in READFDS (if not NULL) for read + readiness, in WRITEFDS (if not NULL) for write readiness, and in EXCEPTFDS + (if not NULL) for exceptional conditions. If TIMEOUT is not NULL, time out + after waiting the interval specified therein. Returns the number of ready + descriptors, or -1 for errors. */ +extern int __select __P ((int __nfds, __fd_set *__readfds, + __fd_set *__writefds, __fd_set *__exceptfds, + struct timeval *__timeout)); +extern int select __P ((int __nfds, __fd_set *__readfds, + __fd_set *__writefds, __fd_set *__exceptfds, + struct timeval *__timeout)); + +#ifdef __USE_GNU +/* XXX Once/if POSIX.1g gets official this prototype will be available + when defining __USE_POSIX. */ +/* Same as above only that the TIMEOUT value is given with higher + resolution and a sigmask which is been set temporarily. This version + should be used. */ +extern int pselect __P ((int __nfds, __fd_set *__readfds, + __fd_set *__writefds, __fd_set *__exceptfds, + const struct timespec *__timeout, + const __sigset_t *__sigmask)); +#endif + +__END_DECLS + +#endif /* sys/select.h */ -- cgit v1.2.3