1 /* Provide a more complete sys/time.h.
2
3 Copyright (C) 2007-2021 Free Software Foundation, Inc.
4
5 This program is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation; either version 3, or (at your option)
8 any later version.
9
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
14
15 You should have received a copy of the GNU General Public License
16 along with this program; if not, see <https://www.gnu.org/licenses/>. */
17
18 /* Written by Paul Eggert. */
19
20 #ifndef _@GUARD_PREFIX@_SYS_TIME_H
21
22 #if __GNUC__ >= 3
23 @PRAGMA_SYSTEM_HEADER@
24 #endif
25 @PRAGMA_COLUMNS@
26
27 /* On Cygwin and on many BSDish systems, <sys/time.h> includes itself
28 recursively via <sys/select.h>.
29 Simply delegate to the system's header in this case; it is a no-op.
30 Without this extra ifdef, the C++ gettimeofday declaration below
31 would be a forward declaration in gnulib's nested <sys/time.h>. */
32 #if defined _CYGWIN_SYS_TIME_H || defined _SYS_TIME_H || defined _SYS_TIME_H_
33 # @INCLUDE_NEXT@ @NEXT_SYS_TIME_H@
34 #else
35
36 /* The include_next requires a split double-inclusion guard. */
37 #if @HAVE_SYS_TIME_H@
38 # @INCLUDE_NEXT@ @NEXT_SYS_TIME_H@
39 #endif
40
41 #ifndef _@GUARD_PREFIX@_SYS_TIME_H
42 #define _@GUARD_PREFIX@_SYS_TIME_H
43
44 #if ! @HAVE_SYS_TIME_H@
45 # include <time.h>
46 #endif
47
48 /* On native Windows with MSVC, get the 'struct timeval' type.
49 Also, on native Windows with a 64-bit time_t, where we are overriding the
50 'struct timeval' type, get all declarations of system functions whose
51 signature contains 'struct timeval'. */
52 #if (defined _MSC_VER || @REPLACE_STRUCT_TIMEVAL@) && @HAVE_WINSOCK2_H@ && !defined _GL_INCLUDING_WINSOCK2_H
53 # define _GL_INCLUDING_WINSOCK2_H
54 # include <winsock2.h>
55 # undef _GL_INCLUDING_WINSOCK2_H
56 #endif
57
58 /* The definitions of _GL_FUNCDECL_RPL etc. are copied here. */
59
60 /* The definition of _GL_ARG_NONNULL is copied here. */
61
62 /* The definition of _GL_WARN_ON_USE is copied here. */
63
64 #ifdef __cplusplus
65 extern "C" {
66 #endif
67
68 #if !@HAVE_STRUCT_TIMEVAL@ || @REPLACE_STRUCT_TIMEVAL@
69
70 # if @REPLACE_STRUCT_TIMEVAL@
71 # define timeval rpl_timeval
72 # endif
73
74 # if !GNULIB_defined_struct_timeval
75 struct timeval
76 {
77 time_t tv_sec;
78 long int tv_usec;
79 };
80 # define GNULIB_defined_struct_timeval 1
81 # endif
82
83 #endif
84
85 #ifdef __cplusplus
86 }
87 #endif
88
89 #if @GNULIB_GETTIMEOFDAY@
90 # if @REPLACE_GETTIMEOFDAY@
91 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
92 # undef gettimeofday
93 # define gettimeofday rpl_gettimeofday
94 # endif
95 _GL_FUNCDECL_RPL (gettimeofday, int,
96 (struct timeval *restrict, void *restrict)
97 _GL_ARG_NONNULL ((1)));
98 _GL_CXXALIAS_RPL (gettimeofday, int,
99 (struct timeval *restrict, void *restrict));
100 # else
101 # if !@HAVE_GETTIMEOFDAY@
102 _GL_FUNCDECL_SYS (gettimeofday, int,
103 (struct timeval *restrict, void *restrict)
104 _GL_ARG_NONNULL ((1)));
105 # endif
106 /* Need to cast, because on glibc systems, by default, the second argument is
107 struct timezone *. */
108 _GL_CXXALIAS_SYS_CAST (gettimeofday, int,
109 (struct timeval *restrict, void *restrict));
110 # endif
111 _GL_CXXALIASWARN (gettimeofday);
112 # if defined __cplusplus && defined GNULIB_NAMESPACE
113 namespace GNULIB_NAMESPACE {
114 typedef ::timeval
115 # undef timeval
116 timeval;
117 # if @REPLACE_STRUCT_TIMEVAL@
118 # define timeval rpl_timeval
119 typedef ::timeval timeval;
120 # endif
121 }
122 # endif
123 #elif defined GNULIB_POSIXCHECK
124 # undef gettimeofday
125 # if HAVE_RAW_DECL_GETTIMEOFDAY
126 _GL_WARN_ON_USE (gettimeofday, "gettimeofday is unportable - "
127 "use gnulib module gettimeofday for portability");
128 # endif
129 #endif
130
131 /* Hide some function declarations from <winsock2.h>. */
132
133 #if defined _MSC_VER && @HAVE_WINSOCK2_H@
134 # if !defined _@GUARD_PREFIX@_UNISTD_H
135 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
136 # undef close
137 # define close close_used_without_including_unistd_h
138 # elif !defined __clang__
139 _GL_WARN_ON_USE (close,
140 "close() used without including <unistd.h>");
141 # endif
142 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
143 # undef gethostname
144 # define gethostname gethostname_used_without_including_unistd_h
145 # else
146 _GL_WARN_ON_USE (gethostname,
147 "gethostname() used without including <unistd.h>");
148 # endif
149 # endif
150 # if !defined _@GUARD_PREFIX@_SYS_SOCKET_H
151 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
152 # undef socket
153 # define socket socket_used_without_including_sys_socket_h
154 # undef connect
155 # define connect connect_used_without_including_sys_socket_h
156 # undef accept
157 # define accept accept_used_without_including_sys_socket_h
158 # undef bind
159 # define bind bind_used_without_including_sys_socket_h
160 # undef getpeername
161 # define getpeername getpeername_used_without_including_sys_socket_h
162 # undef getsockname
163 # define getsockname getsockname_used_without_including_sys_socket_h
164 # undef getsockopt
165 # define getsockopt getsockopt_used_without_including_sys_socket_h
166 # undef listen
167 # define listen listen_used_without_including_sys_socket_h
168 # undef recv
169 # define recv recv_used_without_including_sys_socket_h
170 # undef send
171 # define send send_used_without_including_sys_socket_h
172 # undef recvfrom
173 # define recvfrom recvfrom_used_without_including_sys_socket_h
174 # undef sendto
175 # define sendto sendto_used_without_including_sys_socket_h
176 # undef setsockopt
177 # define setsockopt setsockopt_used_without_including_sys_socket_h
178 # undef shutdown
179 # define shutdown shutdown_used_without_including_sys_socket_h
180 # else
181 _GL_WARN_ON_USE (socket,
182 "socket() used without including <sys/socket.h>");
183 _GL_WARN_ON_USE (connect,
184 "connect() used without including <sys/socket.h>");
185 _GL_WARN_ON_USE (accept,
186 "accept() used without including <sys/socket.h>");
187 _GL_WARN_ON_USE (bind,
188 "bind() used without including <sys/socket.h>");
189 _GL_WARN_ON_USE (getpeername,
190 "getpeername() used without including <sys/socket.h>");
191 _GL_WARN_ON_USE (getsockname,
192 "getsockname() used without including <sys/socket.h>");
193 _GL_WARN_ON_USE (getsockopt,
194 "getsockopt() used without including <sys/socket.h>");
195 _GL_WARN_ON_USE (listen,
196 "listen() used without including <sys/socket.h>");
197 _GL_WARN_ON_USE (recv,
198 "recv() used without including <sys/socket.h>");
199 _GL_WARN_ON_USE (send,
200 "send() used without including <sys/socket.h>");
201 _GL_WARN_ON_USE (recvfrom,
202 "recvfrom() used without including <sys/socket.h>");
203 _GL_WARN_ON_USE (sendto,
204 "sendto() used without including <sys/socket.h>");
205 _GL_WARN_ON_USE (setsockopt,
206 "setsockopt() used without including <sys/socket.h>");
207 _GL_WARN_ON_USE (shutdown,
208 "shutdown() used without including <sys/socket.h>");
209 # endif
210 # endif
211 # if !defined _@GUARD_PREFIX@_SYS_SELECT_H
212 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
213 # undef select
214 # define select select_used_without_including_sys_select_h
215 # else
216 _GL_WARN_ON_USE (select,
217 "select() used without including <sys/select.h>");
218 # endif
219 # endif
220 #endif
221
222 #endif /* _@GUARD_PREFIX@_SYS_TIME_H */
223 #endif /* _CYGWIN_SYS_TIME_H */
224 #endif /* _@GUARD_PREFIX@_SYS_TIME_H */