1 /* Header for poll(2) emulation 2 Contributed by Paolo Bonzini. 3 4 Copyright 2001-2003, 2007, 2009-2017 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 Lesser General Public License as published by 10 the Free Software Foundation; either version 2, 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 Lesser General Public License for more details. 17 18 You should have received a copy of the GNU Lesser General Public License along 19 with this program; if not, see <http://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 37 /* The definitions of _GL_FUNCDECL_RPL etc. are copied here. */ 38 39 /* The definition of _GL_WARN_ON_USE is copied here. */ 40 41 42 #if !@HAVE_POLL_H@ 43 44 /* fake a poll(2) environment */ 45 # define POLLIN 0x0001 /* any readable data available */ 46 # define POLLPRI 0x0002 /* OOB/Urgent readable data */ 47 # define POLLOUT 0x0004 /* file descriptor is writable */ 48 # define POLLERR 0x0008 /* some poll error occurred */ 49 # define POLLHUP 0x0010 /* file descriptor was "hung up" */ 50 # define POLLNVAL 0x0020 /* requested events "invalid" */ 51 # define POLLRDNORM 0x0040 52 # define POLLRDBAND 0x0080 53 # define POLLWRNORM 0x0100 54 # define POLLWRBAND 0x0200 55 56 # if !GNULIB_defined_poll_types 57 58 struct pollfd 59 { 60 int fd; /* which file descriptor to poll */ 61 short events; /* events we are interested in */ 62 short revents; /* events found on return */ 63 }; 64 65 typedef unsigned long nfds_t; 66 67 # define GNULIB_defined_poll_types 1 68 # endif 69 70 /* Define INFTIM only if doing so conforms to POSIX. */ 71 # if !defined (_POSIX_C_SOURCE) && !defined (_XOPEN_SOURCE) 72 # define INFTIM (-1) 73 # endif 74 75 #endif 76 77 78 #if @GNULIB_POLL@ 79 # if @REPLACE_POLL@ 80 # if !(defined __cplusplus && defined GNULIB_NAMESPACE) 81 # undef poll 82 # define poll rpl_poll 83 # endif 84 _GL_FUNCDECL_RPL (poll, int, (struct pollfd *pfd, nfds_t nfd, int timeout)); 85 _GL_CXXALIAS_RPL (poll, int, (struct pollfd *pfd, nfds_t nfd, int timeout)); 86 # else 87 # if !@HAVE_POLL@ 88 _GL_FUNCDECL_SYS (poll, int, (struct pollfd *pfd, nfds_t nfd, int timeout)); 89 # endif 90 _GL_CXXALIAS_SYS (poll, int, (struct pollfd *pfd, nfds_t nfd, int timeout)); 91 # endif 92 _GL_CXXALIASWARN (poll); 93 #elif defined GNULIB_POSIXCHECK 94 # undef poll 95 # if HAVE_RAW_DECL_POLL 96 _GL_WARN_ON_USE (poll, "poll is unportable - " 97 "use gnulib module poll for portability"); 98 # endif 99 #endif 100 101 102 #endif /* _@GUARD_PREFIX@_POLL_H */ 103 #endif /* _@GUARD_PREFIX@_POLL_H */ 104