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annotate packages/language/c/libc/current/src/stdio/common/fclose.cxx @ 66:bf00f99aec69 ecos-sw-2000-02-02

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Merge from eCos master repository on 2000-02-02-19:16:44-GMT
author jlarmour
date Wed, 02 Feb 2000 19:57:02 +0000
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1 //===========================================================================
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2 //
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3 // fclose.cxx
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4 //
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5 // Implementation of C library file close function as per ANSI 7.9.5.1
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6 //
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7 //===========================================================================
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8 //####COPYRIGHTBEGIN####
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9 //
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10 // -------------------------------------------
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11 // The contents of this file are subject to the Red Hat eCos Public License
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12 // Version 1.1 (the "License"); you may not use this file except in
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13 // compliance with the License. You may obtain a copy of the License at
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14 // http://www.redhat.com/
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15 //
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16 // Software distributed under the License is distributed on an "AS IS"
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17 // basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
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18 // License for the specific language governing rights and limitations under
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19 // the License.
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20 //
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21 // The Original Code is eCos - Embedded Configurable Operating System,
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22 // released September 30, 1998.
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23 //
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24 // The Initial Developer of the Original Code is Red Hat.
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25 // Portions created by Red Hat are
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26 // Copyright (C) 1998, 1999, 2000 Red Hat, Inc.
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27 // All Rights Reserved.
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28 // -------------------------------------------
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29 //
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30 //####COPYRIGHTEND####
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31 //===========================================================================
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32 //#####DESCRIPTIONBEGIN####
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33 //
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34 // Author(s): jlarmour
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35 // Contributors: jlarmour
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36 // Date: 1999-01-21
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37 // Purpose: Implements ISO C fclose() function
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38 // Description:
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39 // Usage:
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40 //
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41 //####DESCRIPTIONEND####
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42 //
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43 //===========================================================================
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44
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45 // CONFIGURATION
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46
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47 #include <pkgconf/libc.h> // Configuration header
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48
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49
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50 // Do we want the stdio stuff? And we can't have fclose() without fopen()
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51 #if defined(CYGPKG_LIBC_STDIO) && defined(CYGPKG_LIBC_STDIO_OPEN)
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52
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53 // INCLUDES
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54
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55 #include <cyg/infra/cyg_type.h> // Common project-wide type definitions
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56 #include <stddef.h> // NULL and size_t from compiler
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57 #include <errno.h> // Error codes
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58 #include <stdio.h> // header for fclose()
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59 #include "clibincl/stdlibsupp.hxx" // _free()
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60 #include "clibincl/stdiofiles.hxx" // C library files
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61 #include "clibincl/stream.hxx" // C libray streams
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62 #include "clibincl/stdiosupp.hxx" // support for stdio
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63
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64
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65 // EXPORTED SYMBOLS
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66
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67 externC int
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68 fclose( FILE * ) CYGBLD_ATTRIB_WEAK_ALIAS(_fclose);
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69
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70
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71 // FUNCTIONS
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72
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73
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74 externC int
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75 _fclose( FILE *stream )
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76 {
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77 Cyg_StdioStream *real_stream = (Cyg_StdioStream *)stream;
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78 int i;
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79
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80 Cyg_libc_stdio_files::lock();
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81
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82 // find the stream in the table
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83 for (i=0; i < FOPEN_MAX; i++)
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84 {
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85 if (real_stream == Cyg_libc_stdio_files::get_file_stream(i))
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86 break;
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87 } // for
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88
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89 if (i == FOPEN_MAX) // didn't find it
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90 {
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91 errno = EBADF;
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92
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93 return EOF;
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94 } // if
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95
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96 // FIXME: should use delete?
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97 // Explicitly call destructor - this flushes the output too
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98 real_stream->~Cyg_StdioStream();
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99
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100 // and free it
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101 _free(real_stream);
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102
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103 // and mark the stream available for use
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104 Cyg_libc_stdio_files::set_file_stream(i, NULL);
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105
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106 Cyg_libc_stdio_files::unlock();
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107
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108 return 0;
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109
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110 } // _fclose()
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111
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112 #endif // if defined(CYGPKG_LIBC_STDIO) && defined(CYGPKG_LIBC_STDIO_OPEN)
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113
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114 // EOF fclose.cxx