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annotate lib/sys_select.in.h @ 11398:2de4c4d41f01

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Work around select() bug on Interix 3.5.
author Bruno Haible <bruno@clisp.org>
date Thu, 12 Mar 2009 11:46:05 +0100
parents 3c51cf16c4fa
children 1bc3a28e8169
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1 /* Substitute for <sys/select.h>.
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2 Copyright (C) 2007-2009 Free Software Foundation, Inc.
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3
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4 This program is free software; you can redistribute it and/or modify
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5 it under the terms of the GNU General Public License as published by
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6 the Free Software Foundation; either version 2, or (at your option)
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7 any later version.
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8
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9 This program is distributed in the hope that it will be useful,
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10 but WITHOUT ANY WARRANTY; without even the implied warranty of
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11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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12 GNU General Public License for more details.
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13
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14 You should have received a copy of the GNU General Public License
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15 along with this program; if not, write to the Free Software Foundation,
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16 Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
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17
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18 # if __GNUC__ >= 3
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19 @PRAGMA_SYSTEM_HEADER@
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20 # endif
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21
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22 /* On OSF/1, <sys/types.h> and <sys/time.h> include <sys/select.h>.
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23 Simply delegate to the system's header in this case. */
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24 #if @HAVE_SYS_SELECT_H@ && defined __osf__ && (defined _SYS_TYPES_H_ && !defined _GL_SYS_SELECT_H_REDIRECT_FROM_SYS_TYPES_H) && defined _OSF_SOURCE
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25
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26 # define _GL_SYS_SELECT_H_REDIRECT_FROM_SYS_TYPES_H
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27 # @INCLUDE_NEXT@ @NEXT_SYS_SELECT_H@
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28
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29 #elif @HAVE_SYS_SELECT_H@ && defined __osf__ && (defined _SYS_TIME_H_ && !defined _GL_SYS_SELECT_H_REDIRECT_FROM_SYS_TIME_H) && defined _OSF_SOURCE
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30
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31 # define _GL_SYS_SELECT_H_REDIRECT_FROM_SYS_TIME_H
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32 # @INCLUDE_NEXT@ @NEXT_SYS_SELECT_H@
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33
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34 #else
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35
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36 #ifndef _GL_SYS_SELECT_H
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37
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38 #if @HAVE_SYS_SELECT_H@
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39
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40 /* On many platforms, <sys/select.h> assumes prior inclusion of
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41 <sys/types.h>. */
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42 # include <sys/types.h>
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43
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44 /* On OSF/1 4.0, <sys/select.h> provides only a forward declaration
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45 of 'struct timeval', and no definition of this type.. */
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46 # include <sys/time.h>
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47
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48 /* The include_next requires a split double-inclusion guard. */
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49 # @INCLUDE_NEXT@ @NEXT_SYS_SELECT_H@
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50
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51 #endif
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52
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53 #ifndef _GL_SYS_SELECT_H
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54 #define _GL_SYS_SELECT_H
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55
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56 #if !@HAVE_SYS_SELECT_H@
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57
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58 /* A platform that lacks <sys/select.h>. */
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59
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60 # include <sys/socket.h>
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61
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62 /* The definition of GL_LINK_WARNING is copied here. */
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63
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64 # ifdef __cplusplus
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65 extern "C" {
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66 # endif
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67
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68 # if @GNULIB_SELECT@
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69 # if @HAVE_WINSOCK2_H@ || @REPLACE_SELECT@
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70 # undef select
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71 # define select rpl_select
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72 extern int rpl_select (int, fd_set *, fd_set *, fd_set *, struct timeval *);
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73 # endif
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74 # elif @HAVE_WINSOCK2_H@
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75 # undef select
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76 # define select select_used_without_requesting_gnulib_module_select
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77 # elif defined GNULIB_POSIXCHECK
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78 # undef select
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79 # define select(n,r,w,e,t) \
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80 (GL_LINK_WARNING ("select is not always POSIX compliant - " \
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81 "use gnulib module select for portability"), \
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82 select (n, r, w, e, t))
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83 # endif
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84
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85 # ifdef __cplusplus
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86 }
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87 # endif
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88
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89 #endif
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90
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91 #endif /* _GL_SYS_SELECT_H */
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92 #endif /* _GL_SYS_SELECT_H */
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93 #endif /* OSF/1 */