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/* Header for poll(2) emulation
Contributed by Paolo Bonzini.
Copyright 2001-2003, 2007, 2009-2025 Free Software Foundation, Inc.
This file is part of gnulib.
This file 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.
This file 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 this program. If not, see <https://www.gnu.org/licenses/>. */
#ifndef _@GUARD_PREFIX@_POLL_H
#if __GNUC__ >= 3
@PRAGMA_SYSTEM_HEADER@
#endif
@PRAGMA_COLUMNS@
/* The include_next requires a split double-inclusion guard. */
#if @HAVE_POLL_H@
# @INCLUDE_NEXT@ @NEXT_POLL_H@
#endif
#ifndef _@GUARD_PREFIX@_POLL_H
#define _@GUARD_PREFIX@_POLL_H
/* This file uses GNULIB_POSIXCHECK, HAVE_RAW_DECL_*. */
#if !_GL_CONFIG_H_INCLUDED
#error "Please include config.h first."
#endif
/* On native Windows, get the 'struct pollfd' type and the POLL* macro
definitions before we override them. mingw defines them in <winsock2.h>
if _WIN32_WINNT >= 0x0600. */
#if @HAVE_WINSOCK2_H@
# include <winsock2.h>
#endif
/* The definitions of _GL_FUNCDECL_RPL etc. are copied here. */
/* The definition of _GL_WARN_ON_USE is copied here. */
#if !@HAVE_POLL_H@
# if @HAVE_WINSOCK2_H@
/* Override the definitions from <winsock2.h>. */
# undef POLLIN
# undef POLLPRI
# undef POLLOUT
# undef POLLERR
# undef POLLHUP
# undef POLLNVAL
# undef POLLRDNORM
# undef POLLRDBAND
# undef POLLWRNORM
# undef POLLWRBAND
# define pollfd rpl_pollfd
# endif
/* fake a poll(2) environment */
# define POLLIN 0x0001 /* any readable data available */
# define POLLPRI 0x0002 /* OOB/Urgent readable data */
# define POLLOUT 0x0004 /* file descriptor is writable */
# define POLLERR 0x0008 /* some poll error occurred */
# define POLLHUP 0x0010 /* file descriptor was "hung up" */
# define POLLNVAL 0x0020 /* requested events "invalid" */
# define POLLRDNORM 0x0040
# define POLLRDBAND 0x0080
# define POLLWRNORM 0x0100
# define POLLWRBAND 0x0200
# if !GNULIB_defined_poll_types
struct pollfd
{
int fd; /* which file descriptor to poll */
short events; /* events we are interested in */
short revents; /* events found on return */
};
typedef unsigned long nfds_t;
# define GNULIB_defined_poll_types 1
# endif
/* Define INFTIM only if doing so conforms to POSIX. */
# if !defined (_POSIX_C_SOURCE) && !defined (_XOPEN_SOURCE)
# define INFTIM (-1)
# endif
#endif
#if @GNULIB_POLL@
# if @REPLACE_POLL@
# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
# undef poll
# define poll rpl_poll
# endif
_GL_FUNCDECL_RPL (poll, int, (struct pollfd *pfd, nfds_t nfd, int timeout), );
_GL_CXXALIAS_RPL (poll, int, (struct pollfd *pfd, nfds_t nfd, int timeout));
# else
# if !@HAVE_POLL@
_GL_FUNCDECL_SYS (poll, int, (struct pollfd *pfd, nfds_t nfd, int timeout), );
# endif
_GL_CXXALIAS_SYS (poll, int, (struct pollfd *pfd, nfds_t nfd, int timeout));
# endif
_GL_CXXALIASWARN (poll);
#elif defined GNULIB_POSIXCHECK
# undef poll
# if HAVE_RAW_DECL_POLL
_GL_WARN_ON_USE (poll, "poll is unportable - "
"use gnulib module poll for portability");
# endif
#endif
#endif /* _@GUARD_PREFIX@_POLL_H */
#endif /* _@GUARD_PREFIX@_POLL_H */
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