mirror of https://gitee.com/openkylin/wget.git
320 lines
12 KiB
C
320 lines
12 KiB
C
/* Substitute for <sys/select.h>.
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Copyright (C) 2007-2019 Free Software Foundation, Inc.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3, or (at your option)
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any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, see <https://www.gnu.org/licenses/>. */
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# if __GNUC__ >= 3
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@PRAGMA_SYSTEM_HEADER@
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# endif
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@PRAGMA_COLUMNS@
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/* On OSF/1 and Solaris 2.6, <sys/types.h> and <sys/time.h>
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both include <sys/select.h>.
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On Cygwin, <sys/time.h> includes <sys/select.h>.
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Simply delegate to the system's header in this case. */
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#if (@HAVE_SYS_SELECT_H@ \
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&& !defined _GL_SYS_SELECT_H_REDIRECT_FROM_SYS_TYPES_H \
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&& ((defined __osf__ && defined _SYS_TYPES_H_ \
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&& defined _OSF_SOURCE) \
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|| (defined __sun && defined _SYS_TYPES_H \
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&& (! (defined _XOPEN_SOURCE || defined _POSIX_C_SOURCE) \
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|| defined __EXTENSIONS__))))
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# define _GL_SYS_SELECT_H_REDIRECT_FROM_SYS_TYPES_H
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# @INCLUDE_NEXT@ @NEXT_SYS_SELECT_H@
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#elif (@HAVE_SYS_SELECT_H@ \
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&& (defined _CYGWIN_SYS_TIME_H \
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|| (!defined _GL_SYS_SELECT_H_REDIRECT_FROM_SYS_TIME_H \
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&& ((defined __osf__ && defined _SYS_TIME_H_ \
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&& defined _OSF_SOURCE) \
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|| (defined __sun && defined _SYS_TIME_H \
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&& (! (defined _XOPEN_SOURCE \
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|| defined _POSIX_C_SOURCE) \
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|| defined __EXTENSIONS__))))))
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# define _GL_SYS_SELECT_H_REDIRECT_FROM_SYS_TIME_H
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# @INCLUDE_NEXT@ @NEXT_SYS_SELECT_H@
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/* On IRIX 6.5, <sys/timespec.h> includes <sys/types.h>, which includes
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<sys/bsd_types.h>, which includes <sys/select.h>. At this point we cannot
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include <signal.h>, because that includes <internal/signal_core.h>, which
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gives a syntax error because <sys/timespec.h> has not been completely
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processed. Simply delegate to the system's header in this case. */
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#elif @HAVE_SYS_SELECT_H@ && defined __sgi && (defined _SYS_BSD_TYPES_H && !defined _GL_SYS_SELECT_H_REDIRECT_FROM_SYS_BSD_TYPES_H)
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# define _GL_SYS_SELECT_H_REDIRECT_FROM_SYS_BSD_TYPES_H
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# @INCLUDE_NEXT@ @NEXT_SYS_SELECT_H@
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/* On OpenBSD 5.0, <pthread.h> includes <sys/types.h>, which includes
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<sys/select.h>. At this point we cannot include <signal.h>, because that
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includes gnulib's pthread.h override, which gives a syntax error because
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/usr/include/pthread.h has not been completely processed. Simply delegate
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to the system's header in this case. */
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#elif @HAVE_SYS_SELECT_H@ && defined __OpenBSD__ && (defined _PTHREAD_H_ && !defined PTHREAD_MUTEX_INITIALIZER)
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# @INCLUDE_NEXT@ @NEXT_SYS_SELECT_H@
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#else
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#ifndef _@GUARD_PREFIX@_SYS_SELECT_H
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/* On many platforms, <sys/select.h> assumes prior inclusion of
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<sys/types.h>. Also, mingw defines sigset_t there, instead of
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in <signal.h> where it belongs. */
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#include <sys/types.h>
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#if @HAVE_SYS_SELECT_H@
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/* On OSF/1 4.0, <sys/select.h> provides only a forward declaration
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of 'struct timeval', and no definition of this type.
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Also, Mac OS X, AIX, HP-UX, IRIX, Solaris, Interix declare select()
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in <sys/time.h>.
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But avoid namespace pollution on glibc systems and "unknown type
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name" problems on Cygwin. */
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# if !(defined __GLIBC__ || defined __CYGWIN__)
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# include <sys/time.h>
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# endif
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/* On AIX 7 and Solaris 10, <sys/select.h> provides an FD_ZERO implementation
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that relies on memset(), but without including <string.h>.
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But in any case avoid namespace pollution on glibc systems. */
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# if (defined __OpenBSD__ || defined _AIX || defined __sun || defined __osf__ || defined __BEOS__) \
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&& ! defined __GLIBC__
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# include <string.h>
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# endif
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/* The include_next requires a split double-inclusion guard. */
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# @INCLUDE_NEXT@ @NEXT_SYS_SELECT_H@
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#endif
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/* Get definition of 'sigset_t'.
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But avoid namespace pollution on glibc systems and "unknown type
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name" problems on Cygwin.
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Do this after the include_next (for the sake of OpenBSD 5.0) but before
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the split double-inclusion guard (for the sake of Solaris). */
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#if !((defined __GLIBC__ || defined __CYGWIN__) && !defined __UCLIBC__)
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# include <signal.h>
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#endif
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#ifndef _@GUARD_PREFIX@_SYS_SELECT_H
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#define _@GUARD_PREFIX@_SYS_SELECT_H
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#if !@HAVE_SYS_SELECT_H@
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/* A platform that lacks <sys/select.h>. */
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/* Get the 'struct timeval' and 'fd_set' types and the FD_* macros
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on most platforms. */
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# include <sys/time.h>
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/* On HP-UX 11, <sys/time.h> provides an FD_ZERO implementation
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that relies on memset(), but without including <string.h>. */
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# if defined __hpux
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# include <string.h>
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# endif
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/* On native Windows platforms:
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Get the 'fd_set' type.
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Get the close() declaration before we override it. */
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# if @HAVE_WINSOCK2_H@
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# if !defined _GL_INCLUDING_WINSOCK2_H
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# define _GL_INCLUDING_WINSOCK2_H
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# include <winsock2.h>
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# undef _GL_INCLUDING_WINSOCK2_H
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# endif
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# include <io.h>
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# endif
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#endif
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/* The definitions of _GL_FUNCDECL_RPL etc. are copied here. */
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/* The definition of _GL_WARN_ON_USE is copied here. */
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/* Fix some definitions from <winsock2.h>. */
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#if @HAVE_WINSOCK2_H@
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# if !GNULIB_defined_rpl_fd_isset
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/* Re-define FD_ISSET to avoid a WSA call while we are not using
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network sockets. */
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static int
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rpl_fd_isset (SOCKET fd, fd_set * set)
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{
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u_int i;
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if (set == NULL)
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return 0;
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for (i = 0; i < set->fd_count; i++)
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if (set->fd_array[i] == fd)
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return 1;
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return 0;
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}
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# define GNULIB_defined_rpl_fd_isset 1
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# endif
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# undef FD_ISSET
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# define FD_ISSET(fd, set) rpl_fd_isset(fd, set)
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#endif
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/* Hide some function declarations from <winsock2.h>. */
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#if @HAVE_WINSOCK2_H@
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# if !defined _@GUARD_PREFIX@_UNISTD_H
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# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
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# undef close
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# define close close_used_without_including_unistd_h
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# else
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_GL_WARN_ON_USE (close,
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"close() used without including <unistd.h>");
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# endif
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# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
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# undef gethostname
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# define gethostname gethostname_used_without_including_unistd_h
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# else
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_GL_WARN_ON_USE (gethostname,
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"gethostname() used without including <unistd.h>");
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# endif
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# endif
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# if !defined _@GUARD_PREFIX@_SYS_SOCKET_H
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# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
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# undef socket
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# define socket socket_used_without_including_sys_socket_h
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# undef connect
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# define connect connect_used_without_including_sys_socket_h
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# undef accept
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# define accept accept_used_without_including_sys_socket_h
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# undef bind
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# define bind bind_used_without_including_sys_socket_h
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# undef getpeername
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# define getpeername getpeername_used_without_including_sys_socket_h
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# undef getsockname
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# define getsockname getsockname_used_without_including_sys_socket_h
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# undef getsockopt
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# define getsockopt getsockopt_used_without_including_sys_socket_h
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# undef listen
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# define listen listen_used_without_including_sys_socket_h
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# undef recv
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# define recv recv_used_without_including_sys_socket_h
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# undef send
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# define send send_used_without_including_sys_socket_h
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# undef recvfrom
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# define recvfrom recvfrom_used_without_including_sys_socket_h
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# undef sendto
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# define sendto sendto_used_without_including_sys_socket_h
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# undef setsockopt
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# define setsockopt setsockopt_used_without_including_sys_socket_h
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# undef shutdown
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# define shutdown shutdown_used_without_including_sys_socket_h
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# else
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_GL_WARN_ON_USE (socket,
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"socket() used without including <sys/socket.h>");
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_GL_WARN_ON_USE (connect,
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"connect() used without including <sys/socket.h>");
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_GL_WARN_ON_USE (accept,
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"accept() used without including <sys/socket.h>");
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_GL_WARN_ON_USE (bind,
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"bind() used without including <sys/socket.h>");
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_GL_WARN_ON_USE (getpeername,
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"getpeername() used without including <sys/socket.h>");
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_GL_WARN_ON_USE (getsockname,
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"getsockname() used without including <sys/socket.h>");
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_GL_WARN_ON_USE (getsockopt,
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"getsockopt() used without including <sys/socket.h>");
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_GL_WARN_ON_USE (listen,
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"listen() used without including <sys/socket.h>");
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_GL_WARN_ON_USE (recv,
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"recv() used without including <sys/socket.h>");
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_GL_WARN_ON_USE (send,
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"send() used without including <sys/socket.h>");
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_GL_WARN_ON_USE (recvfrom,
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"recvfrom() used without including <sys/socket.h>");
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_GL_WARN_ON_USE (sendto,
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"sendto() used without including <sys/socket.h>");
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_GL_WARN_ON_USE (setsockopt,
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"setsockopt() used without including <sys/socket.h>");
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_GL_WARN_ON_USE (shutdown,
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"shutdown() used without including <sys/socket.h>");
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# endif
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# endif
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#endif
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#if @GNULIB_PSELECT@
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# if @REPLACE_PSELECT@
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# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
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# undef pselect
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# define pselect rpl_pselect
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# endif
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_GL_FUNCDECL_RPL (pselect, int,
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(int, fd_set *restrict, fd_set *restrict, fd_set *restrict,
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struct timespec const *restrict, const sigset_t *restrict));
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_GL_CXXALIAS_RPL (pselect, int,
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(int, fd_set *restrict, fd_set *restrict, fd_set *restrict,
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struct timespec const *restrict, const sigset_t *restrict));
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# else
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# if !@HAVE_PSELECT@
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_GL_FUNCDECL_SYS (pselect, int,
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(int, fd_set *restrict, fd_set *restrict, fd_set *restrict,
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struct timespec const *restrict, const sigset_t *restrict));
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# endif
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_GL_CXXALIAS_SYS (pselect, int,
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(int, fd_set *restrict, fd_set *restrict, fd_set *restrict,
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struct timespec const *restrict, const sigset_t *restrict));
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# endif
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_GL_CXXALIASWARN (pselect);
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#elif defined GNULIB_POSIXCHECK
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# undef pselect
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# if HAVE_RAW_DECL_PSELECT
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_GL_WARN_ON_USE (pselect, "pselect is not portable - "
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"use gnulib module pselect for portability");
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# endif
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#endif
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#if @GNULIB_SELECT@
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# if @REPLACE_SELECT@
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# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
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# undef select
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# define select rpl_select
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# endif
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_GL_FUNCDECL_RPL (select, int,
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(int, fd_set *restrict, fd_set *restrict, fd_set *restrict,
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struct timeval *restrict));
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_GL_CXXALIAS_RPL (select, int,
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(int, fd_set *restrict, fd_set *restrict, fd_set *restrict,
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struct timeval *restrict));
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# else
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_GL_CXXALIAS_SYS (select, int,
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(int, fd_set *restrict, fd_set *restrict, fd_set *restrict,
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struct timeval *restrict));
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# endif
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_GL_CXXALIASWARN (select);
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#elif @HAVE_WINSOCK2_H@
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# undef select
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# define select select_used_without_requesting_gnulib_module_select
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#elif defined GNULIB_POSIXCHECK
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# undef select
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# if HAVE_RAW_DECL_SELECT
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_GL_WARN_ON_USE (select, "select is not always POSIX compliant - "
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"use gnulib module select for portability");
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# endif
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#endif
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#endif /* _@GUARD_PREFIX@_SYS_SELECT_H */
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#endif /* _@GUARD_PREFIX@_SYS_SELECT_H */
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#endif /* OSF/1 */
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