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+/* Substitute for <sys/select.h>.
+ Copyright (C) 2007-2022 Free Software Foundation, Inc.
+
+ 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/>. */
+
+# if __GNUC__ >= 3
+@PRAGMA_SYSTEM_HEADER@
+# endif
+@PRAGMA_COLUMNS@
+
+/* On OSF/1 and Solaris 2.6, <sys/types.h> and <sys/time.h>
+ both include <sys/select.h>.
+ On Cygwin and OpenBSD, <sys/time.h> includes <sys/select.h>.
+ Simply delegate to the system's header in this case. */
+#if (@HAVE_SYS_SELECT_H@ \
+ && !defined _GL_SYS_SELECT_H_REDIRECT_FROM_SYS_TYPES_H \
+ && ((defined __osf__ && defined _SYS_TYPES_H_ \
+ && defined _OSF_SOURCE) \
+ || (defined __sun && defined _SYS_TYPES_H \
+ && (! (defined _XOPEN_SOURCE || defined _POSIX_C_SOURCE) \
+ || defined __EXTENSIONS__))))
+
+# define _GL_SYS_SELECT_H_REDIRECT_FROM_SYS_TYPES_H
+# @INCLUDE_NEXT@ @NEXT_SYS_SELECT_H@
+
+#elif (@HAVE_SYS_SELECT_H@ \
+ && (defined _CYGWIN_SYS_TIME_H \
+ || (!defined _GL_SYS_SELECT_H_REDIRECT_FROM_SYS_TIME_H \
+ && ((defined __osf__ && defined _SYS_TIME_H_ \
+ && defined _OSF_SOURCE) \
+ || (defined __OpenBSD__ && defined _SYS_TIME_H_) \
+ || (defined __sun && defined _SYS_TIME_H \
+ && (! (defined _XOPEN_SOURCE \
+ || defined _POSIX_C_SOURCE) \
+ || defined __EXTENSIONS__))))))
+
+# define _GL_SYS_SELECT_H_REDIRECT_FROM_SYS_TIME_H
+# @INCLUDE_NEXT@ @NEXT_SYS_SELECT_H@
+
+/* On IRIX 6.5, <sys/timespec.h> includes <sys/types.h>, which includes
+ <sys/bsd_types.h>, which includes <sys/select.h>. At this point we cannot
+ include <signal.h>, because that includes <internal/signal_core.h>, which
+ gives a syntax error because <sys/timespec.h> has not been completely
+ processed. Simply delegate to the system's header in this case. */
+#elif @HAVE_SYS_SELECT_H@ && defined __sgi && (defined _SYS_BSD_TYPES_H && !defined _GL_SYS_SELECT_H_REDIRECT_FROM_SYS_BSD_TYPES_H)
+
+# define _GL_SYS_SELECT_H_REDIRECT_FROM_SYS_BSD_TYPES_H
+# @INCLUDE_NEXT@ @NEXT_SYS_SELECT_H@
+
+/* On OpenBSD 5.0, <pthread.h> includes <sys/types.h>, which includes
+ <sys/select.h>. At this point we cannot include <signal.h>, because that
+ includes gnulib's pthread.h override, which gives a syntax error because
+ /usr/include/pthread.h has not been completely processed. Simply delegate
+ to the system's header in this case. */
+#elif @HAVE_SYS_SELECT_H@ && defined __OpenBSD__ && (defined _PTHREAD_H_ && !defined PTHREAD_MUTEX_INITIALIZER)
+
+# @INCLUDE_NEXT@ @NEXT_SYS_SELECT_H@
+
+#else
+
+#ifndef _@GUARD_PREFIX@_SYS_SELECT_H
+
+/* On many platforms, <sys/select.h> assumes prior inclusion of
+ <sys/types.h>. Also, mingw defines sigset_t there, instead of
+ in <signal.h> where it belongs. */
+#include <sys/types.h>
+
+#if @HAVE_SYS_SELECT_H@
+
+/* On OSF/1 4.0, <sys/select.h> provides only a forward declaration
+ of 'struct timeval', and no definition of this type.
+ Also, Mac OS X, AIX, HP-UX, IRIX, Solaris, Interix declare select()
+ in <sys/time.h>.
+ But avoid namespace pollution on glibc systems and "unknown type
+ name" problems on Cygwin. */
+# if !(defined __GLIBC__ || defined __CYGWIN__)
+# include <sys/time.h>
+# endif
+
+/* On AIX 7 and Solaris 10, <sys/select.h> provides an FD_ZERO implementation
+ that relies on memset(), but without including <string.h>.
+ But in any case avoid namespace pollution on glibc systems. */
+# if (defined __OpenBSD__ || defined _AIX || defined __sun || defined __osf__ || defined __BEOS__) \
+ && ! defined __GLIBC__
+# include <string.h>
+# endif
+
+/* The include_next requires a split double-inclusion guard. */
+# @INCLUDE_NEXT@ @NEXT_SYS_SELECT_H@
+
+#endif
+
+/* Get definition of 'sigset_t'.
+ But avoid namespace pollution on glibc systems and "unknown type
+ name" problems on Cygwin.
+ On OS/2 kLIBC, sigset_t is defined in <sys/select.h>, too. In addition,
+ if <sys/param.h> is included, <types.h> -> <sys/types.h> -> <sys/select.h>
+ are included. Then <signal.h> -> <pthread.h> are included by GNULIB. By the
+ way, <pthread.h> requires PAGE_SIZE defined in <sys/param.h>. However,
+ <sys/param.h> has not been processed, yet. As a result, 'PAGE_SIZE'
+ undeclared error occurs in <pthread.h>.
+ Do this after the include_next (for the sake of OpenBSD 5.0) but before
+ the split double-inclusion guard (for the sake of Solaris). */
+#if !((defined __GLIBC__ || defined __CYGWIN__ || defined __KLIBC__) \
+ && !defined __UCLIBC__)
+# include <signal.h>
+#endif
+
+#ifndef _@GUARD_PREFIX@_SYS_SELECT_H
+#define _@GUARD_PREFIX@_SYS_SELECT_H
+
+#if !@HAVE_SYS_SELECT_H@
+/* A platform that lacks <sys/select.h>. */
+/* Get the 'struct timeval' and 'fd_set' types and the FD_* macros
+ on most platforms. */
+# include <sys/time.h>
+/* On HP-UX 11, <sys/time.h> provides an FD_ZERO implementation
+ that relies on memset(), but without including <string.h>. */
+# if defined __hpux
+# include <string.h>
+# endif
+/* On native Windows platforms:
+ Get the 'fd_set' type.
+ Get the close() declaration before we override it. */
+# if @HAVE_WINSOCK2_H@
+# if !defined _GL_INCLUDING_WINSOCK2_H
+# define _GL_INCLUDING_WINSOCK2_H
+# include <winsock2.h>
+# undef _GL_INCLUDING_WINSOCK2_H
+# endif
+# include <io.h>
+# endif
+#endif
+
+/* The definitions of _GL_FUNCDECL_RPL etc. are copied here. */
+
+/* The definition of _GL_WARN_ON_USE is copied here. */
+
+
+/* Fix some definitions from <winsock2.h>. */
+
+#if @HAVE_WINSOCK2_H@
+
+# if !GNULIB_defined_rpl_fd_isset
+
+/* Re-define FD_ISSET to avoid a WSA call while we are not using
+ network sockets. */
+static int
+rpl_fd_isset (SOCKET fd, fd_set * set)
+{
+ u_int i;
+ if (set == NULL)
+ return 0;
+
+ for (i = 0; i < set->fd_count; i++)
+ if (set->fd_array[i] == fd)
+ return 1;
+
+ return 0;
+}
+
+# define GNULIB_defined_rpl_fd_isset 1
+# endif
+
+# undef FD_ISSET
+# define FD_ISSET(fd, set) rpl_fd_isset(fd, set)
+
+#endif
+
+/* Hide some function declarations from <winsock2.h>. */
+
+#if @HAVE_WINSOCK2_H@
+# if !defined _@GUARD_PREFIX@_UNISTD_H
+# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+# undef close
+# define close close_used_without_including_unistd_h
+# elif !defined __clang__
+ _GL_WARN_ON_USE (close,
+ "close() used without including <unistd.h>");
+# endif
+# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+# undef gethostname
+# define gethostname gethostname_used_without_including_unistd_h
+# elif !defined __clang__
+ _GL_WARN_ON_USE (gethostname,
+ "gethostname() used without including <unistd.h>");
+# endif
+# endif
+# if !defined _@GUARD_PREFIX@_SYS_SOCKET_H
+# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+# undef socket
+# define socket socket_used_without_including_sys_socket_h
+# undef connect
+# define connect connect_used_without_including_sys_socket_h
+# undef accept
+# define accept accept_used_without_including_sys_socket_h
+# undef bind
+# define bind bind_used_without_including_sys_socket_h
+# undef getpeername
+# define getpeername getpeername_used_without_including_sys_socket_h
+# undef getsockname
+# define getsockname getsockname_used_without_including_sys_socket_h
+# undef getsockopt
+# define getsockopt getsockopt_used_without_including_sys_socket_h
+# undef listen
+# define listen listen_used_without_including_sys_socket_h
+# undef recv
+# define recv recv_used_without_including_sys_socket_h
+# undef send
+# define send send_used_without_including_sys_socket_h
+# undef recvfrom
+# define recvfrom recvfrom_used_without_including_sys_socket_h
+# undef sendto
+# define sendto sendto_used_without_including_sys_socket_h
+# undef setsockopt
+# define setsockopt setsockopt_used_without_including_sys_socket_h
+# undef shutdown
+# define shutdown shutdown_used_without_including_sys_socket_h
+# elif !defined __clang__
+ _GL_WARN_ON_USE (socket,
+ "socket() used without including <sys/socket.h>");
+ _GL_WARN_ON_USE (connect,
+ "connect() used without including <sys/socket.h>");
+ _GL_WARN_ON_USE (accept,
+ "accept() used without including <sys/socket.h>");
+ _GL_WARN_ON_USE (bind,
+ "bind() used without including <sys/socket.h>");
+ _GL_WARN_ON_USE (getpeername,
+ "getpeername() used without including <sys/socket.h>");
+ _GL_WARN_ON_USE (getsockname,
+ "getsockname() used without including <sys/socket.h>");
+ _GL_WARN_ON_USE (getsockopt,
+ "getsockopt() used without including <sys/socket.h>");
+ _GL_WARN_ON_USE (listen,
+ "listen() used without including <sys/socket.h>");
+ _GL_WARN_ON_USE (recv,
+ "recv() used without including <sys/socket.h>");
+ _GL_WARN_ON_USE (send,
+ "send() used without including <sys/socket.h>");
+ _GL_WARN_ON_USE (recvfrom,
+ "recvfrom() used without including <sys/socket.h>");
+ _GL_WARN_ON_USE (sendto,
+ "sendto() used without including <sys/socket.h>");
+ _GL_WARN_ON_USE (setsockopt,
+ "setsockopt() used without including <sys/socket.h>");
+ _GL_WARN_ON_USE (shutdown,
+ "shutdown() used without including <sys/socket.h>");
+# endif
+# endif
+#endif
+
+
+#if @GNULIB_PSELECT@
+# if @REPLACE_PSELECT@
+# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+# undef pselect
+# define pselect rpl_pselect
+# endif
+_GL_FUNCDECL_RPL (pselect, int,
+ (int, fd_set *restrict, fd_set *restrict, fd_set *restrict,
+ struct timespec const *restrict, const sigset_t *restrict));
+_GL_CXXALIAS_RPL (pselect, int,
+ (int, fd_set *restrict, fd_set *restrict, fd_set *restrict,
+ struct timespec const *restrict, const sigset_t *restrict));
+# else
+# if !@HAVE_PSELECT@
+_GL_FUNCDECL_SYS (pselect, int,
+ (int, fd_set *restrict, fd_set *restrict, fd_set *restrict,
+ struct timespec const *restrict, const sigset_t *restrict));
+# endif
+/* Need to cast, because on AIX 7, the second, third, fourth argument may be
+ void *restrict, void *restrict, void *restrict. */
+_GL_CXXALIAS_SYS_CAST (pselect, int,
+ (int,
+ fd_set *restrict, fd_set *restrict, fd_set *restrict,
+ struct timespec const *restrict,
+ const sigset_t *restrict));
+# endif
+_GL_CXXALIASWARN (pselect);
+#elif defined GNULIB_POSIXCHECK
+# undef pselect
+# if HAVE_RAW_DECL_PSELECT
+_GL_WARN_ON_USE (pselect, "pselect is not portable - "
+ "use gnulib module pselect for portability");
+# endif
+#endif
+
+#if @GNULIB_SELECT@
+# if @REPLACE_SELECT@
+# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+# undef select
+# define select rpl_select
+# endif
+_GL_FUNCDECL_RPL (select, int,
+ (int, fd_set *restrict, fd_set *restrict, fd_set *restrict,
+ struct timeval *restrict));
+_GL_CXXALIAS_RPL (select, int,
+ (int, fd_set *restrict, fd_set *restrict, fd_set *restrict,
+ timeval *restrict));
+# else
+_GL_CXXALIAS_SYS (select, int,
+ (int, fd_set *restrict, fd_set *restrict, fd_set *restrict,
+ timeval *restrict));
+# endif
+_GL_CXXALIASWARN (select);
+#elif @HAVE_WINSOCK2_H@
+# undef select
+# define select select_used_without_requesting_gnulib_module_select
+#elif defined GNULIB_POSIXCHECK
+# undef select
+# if HAVE_RAW_DECL_SELECT
+_GL_WARN_ON_USE (select, "select is not always POSIX compliant - "
+ "use gnulib module select for portability");
+# endif
+#endif
+
+
+#endif /* _@GUARD_PREFIX@_SYS_SELECT_H */
+#endif /* _@GUARD_PREFIX@_SYS_SELECT_H */
+#endif /* OSF/1 */