gsasl  1.10.0
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poll.in.h
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1 /* Header for poll(2) emulation
2  Contributed by Paolo Bonzini.
3 
4  Copyright 2001-2003, 2007, 2009-2021 Free Software Foundation, Inc.
5 
6  This file is part of gnulib.
7 
8  This program is free software; you can redistribute it and/or modify
9  it under the terms of the GNU General Public License as published by
10  the Free Software Foundation; either version 3, or (at your option)
11  any later version.
12 
13  This program is distributed in the hope that it will be useful,
14  but WITHOUT ANY WARRANTY; without even the implied warranty of
15  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16  GNU General Public License for more details.
17 
18  You should have received a copy of the GNU General Public License along
19  with this program; if not, see <https://www.gnu.org/licenses/>. */
20 
21 #ifndef _@GUARD_PREFIX@_POLL_H
22 
23 #if __GNUC__ >= 3
24 @PRAGMA_SYSTEM_HEADER@
25 #endif
26 @PRAGMA_COLUMNS@
27 
28 /* The include_next requires a split double-inclusion guard. */
29 #if @HAVE_POLL_H@
30 # @INCLUDE_NEXT@ @NEXT_POLL_H@
31 #endif
32 
33 #ifndef _@GUARD_PREFIX@_POLL_H
34 #define _@GUARD_PREFIX@_POLL_H
35 
36 /* On native Windows, get the 'struct pollfd' type and the POLL* macro
37  definitions before we override them. mingw defines them in <winsock2.h>
38  if _WIN32_WINNT >= 0x0600. */
39 #if @HAVE_WINSOCK2_H@
40 # include <winsock2.h>
41 #endif
42 
43 
44 /* The definitions of _GL_FUNCDECL_RPL etc. are copied here. */
45 
46 /* The definition of _GL_WARN_ON_USE is copied here. */
47 
48 
49 #if !@HAVE_POLL_H@
50 
51 # if @HAVE_WINSOCK2_H@
52 /* Override the definitions from <winsock2.h>. */
53 # undef POLLIN
54 # undef POLLPRI
55 # undef POLLOUT
56 # undef POLLERR
57 # undef POLLHUP
58 # undef POLLNVAL
59 # undef POLLRDNORM
60 # undef POLLRDBAND
61 # undef POLLWRNORM
62 # undef POLLWRBAND
63 # define pollfd rpl_pollfd
64 # endif
65 
66 /* fake a poll(2) environment */
67 # define POLLIN 0x0001 /* any readable data available */
68 # define POLLPRI 0x0002 /* OOB/Urgent readable data */
69 # define POLLOUT 0x0004 /* file descriptor is writable */
70 # define POLLERR 0x0008 /* some poll error occurred */
71 # define POLLHUP 0x0010 /* file descriptor was "hung up" */
72 # define POLLNVAL 0x0020 /* requested events "invalid" */
73 # define POLLRDNORM 0x0040
74 # define POLLRDBAND 0x0080
75 # define POLLWRNORM 0x0100
76 # define POLLWRBAND 0x0200
77 
78 # if !GNULIB_defined_poll_types
79 
80 struct pollfd
81 {
82  int fd; /* which file descriptor to poll */
83  short events; /* events we are interested in */
84  short revents; /* events found on return */
85 };
86 
87 typedef unsigned long nfds_t;
88 
89 # define GNULIB_defined_poll_types 1
90 # endif
91 
92 /* Define INFTIM only if doing so conforms to POSIX. */
93 # if !defined (_POSIX_C_SOURCE) && !defined (_XOPEN_SOURCE)
94 # define INFTIM (-1)
95 # endif
96 
97 #endif
98 
99 
100 #if @GNULIB_POLL@
101 # if @REPLACE_POLL@
102 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
103 # undef poll
104 # define poll rpl_poll
105 # endif
106 _GL_FUNCDECL_RPL (poll, int, (struct pollfd *pfd, nfds_t nfd, int timeout));
107 _GL_CXXALIAS_RPL (poll, int, (struct pollfd *pfd, nfds_t nfd, int timeout));
108 # else
109 # if !@HAVE_POLL@
110 _GL_FUNCDECL_SYS (poll, int, (struct pollfd *pfd, nfds_t nfd, int timeout));
111 # endif
112 _GL_CXXALIAS_SYS (poll, int, (struct pollfd *pfd, nfds_t nfd, int timeout));
113 # endif
115 #elif defined GNULIB_POSIXCHECK
116 # undef poll
117 # if HAVE_RAW_DECL_POLL
118 _GL_WARN_ON_USE (poll, "poll is unportable - "
119  "use gnulib module poll for portability");
120 # endif
121 #endif
122 
123 
124 #endif /* _@GUARD_PREFIX@_POLL_H */
125 #endif /* _@GUARD_PREFIX@_POLL_H */
#define _GL_CXXALIAS_RPL(func, rettype, parameters)
Definition: c++defs.h:127
#define _GL_FUNCDECL_RPL(func, rettype, parameters_and_attributes)
Definition: c++defs.h:103
#define _GL_CXXALIASWARN(func)
Definition: c++defs.h:302
#define _GL_CXXALIAS_SYS(func, rettype, parameters)
Definition: c++defs.h:218
#define _GL_FUNCDECL_SYS(func, rettype, parameters_and_attributes)
Definition: c++defs.h:115
#define _GL_WARN_ON_USE(function, message)
Definition: warn-on-use.h:103
int poll(struct pollfd *pfd, nfds_t nfd, int timeout)
Definition: poll.c:368
unsigned long nfds_t
Definition: poll.in.h:87
Definition: poll.in.h:81
int fd
Definition: poll.in.h:82
short revents
Definition: poll.in.h:84
short events
Definition: poll.in.h:83