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annotate packages/language/c/libc/stdio/current/src/common/stdout.cxx @ 208:e0c0827131d1 ecos

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Merge from eCos master repository on 2002-05-20-20:11:54-BST
author jlarmour
date Mon, 20 May 2002 22:19:26 +0000
parents d2f49caf9e38
children d2c90368aeef
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1 //========================================================================
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2 //
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3 // stdout.cxx
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4 //
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5 // Initialization of stdout stream for ISO C library
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6 //
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7 //========================================================================
208
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8 //####ECOSGPLCOPYRIGHTBEGIN####
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9 // -------------------------------------------
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10 // This file is part of eCos, the Embedded Configurable Operating System.
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11 // Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc.
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12 //
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13 // eCos is free software; you can redistribute it and/or modify it under
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14 // the terms of the GNU General Public License as published by the Free
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15 // Software Foundation; either version 2 or (at your option) any later version.
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16 //
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17 // eCos is distributed in the hope that it will be useful, but WITHOUT ANY
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18 // WARRANTY; without even the implied warranty of MERCHANTABILITY or
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19 // FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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20 // for more details.
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21 //
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22 // You should have received a copy of the GNU General Public License along
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23 // with eCos; if not, write to the Free Software Foundation, Inc.,
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24 // 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
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25 //
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26 // As a special exception, if other files instantiate templates or use macros
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27 // or inline functions from this file, or you compile this file and link it
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28 // with other works to produce a work based on this file, this file does not
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29 // by itself cause the resulting work to be covered by the GNU General Public
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30 // License. However the source code for this file must still be made available
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31 // in accordance with section (3) of the GNU General Public License.
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32 //
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33 // This exception does not invalidate any other reasons why a work based on
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34 // this file might be covered by the GNU General Public License.
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35 //
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36 // Alternative licenses for eCos may be arranged by contacting Red Hat, Inc.
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37 // at http://sources.redhat.com/ecos/ecos-license
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38 // -------------------------------------------
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39 //####ECOSGPLCOPYRIGHTEND####
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40 //========================================================================
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41 //#####DESCRIPTIONBEGIN####
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42 //
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43 // Author(s): jlarmour
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44 // Contributors:
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45 // Date: 2000-04-20
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46 // Purpose: Initialization of stdout stream for ISO C library
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47 // Description: We put all this in a separate file in the hope that if
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48 // no-one uses stdout, then it is not included in the image
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49 // Usage:
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50 //
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51 //####DESCRIPTIONEND####
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52 //
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53 //========================================================================
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54
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55 // CONFIGURATION
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56
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57 #include <pkgconf/libc_stdio.h> // Configuration header
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58
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59 // Don't let us get the stream definitions of stdin/out/err from stdio.h
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60 // since we are going to break the type safety :-(
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61 #define CYGPRI_LIBC_STDIO_NO_DEFAULT_STREAMS
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62
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63 // And we don't need the stdio inlines, which will otherwise complain if
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64 // stdin/out/err are not available
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65 #ifdef CYGIMP_LIBC_STDIO_INLINES
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66 # undef CYGIMP_LIBC_STDIO_INLINES
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67 #endif
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68
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69 // INCLUDES
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70
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71 #include <cyg/infra/cyg_type.h> // Common type definitions and support
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72 #include <cyg/libc/stdio/stream.hxx> // Cyg_StdioStream class
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73 #include <cyg/libc/stdio/stdiofiles.hxx> // C library files
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74 #include <cyg/libc/stdio/stdiosupp.hxx> // Cyg_libc_stdio_find_filename()
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75
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76 // CONSTANTS
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77
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78 // add 1 to the priority to allow it to be the fd 1 if necessary
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79 #define PRIO (CYG_INIT_LIBC+1)
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80
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81 // STATICS
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82
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83 Cyg_StdioStream
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84 cyg_libc_stdio_stdout CYGBLD_ATTRIB_INIT_PRI(PRIO) = Cyg_StdioStream(
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85 Cyg_libc_stdio_find_filename(CYGDAT_LIBC_STDIO_DEFAULT_CONSOLE,
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86 Cyg_StdioStream::CYG_STREAM_WRITE,
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87 false, false),
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88 Cyg_StdioStream::CYG_STREAM_WRITE, false, false, _IOLBF );
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89
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90 // CLASSES
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91
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92 // This is a dummy class just so we can execute arbitrary code when
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93 // stdout is requested
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94
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95 class cyg_libc_dummy_stdout_init_class {
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96 public:
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97 cyg_libc_dummy_stdout_init_class(void) {
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98 Cyg_libc_stdio_files::set_file_stream(1, &cyg_libc_stdio_stdout);
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99 }
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100 };
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101
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102 // And here's an instance of the class just to make the code run
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103 static cyg_libc_dummy_stdout_init_class cyg_libc_dummy_stdout_init
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104 CYGBLD_ATTRIB_INIT_PRI(PRIO);
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105
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106 // and finally stdout itself
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107 __externC Cyg_StdioStream * const stdout;
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108 Cyg_StdioStream * const stdout=&cyg_libc_stdio_stdout;
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109
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110 // EOF stdout.cxx