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annotate packages/language/c/libc/stdio/current/include/stdiofiles.hxx @ 115:6ed91473a1cd ecos-sw-2000-08-21

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Merge from eCos master repository on 2000-08-21-22:40:54-BST
author jlarmour
date Fri, 25 Aug 2000 17:32:38 +0000
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1 #ifndef CYGONCE_LIBC_STDIO_STDIOFILES_HXX
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2 #define CYGONCE_LIBC_STDIO_STDIOFILES_HXX
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3 //========================================================================
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4 //
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5 // stdiofiles.hxx
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6 //
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7 // ISO C library stdio central file access
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8 //
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9 //========================================================================
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10 //####COPYRIGHTBEGIN####
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11 //
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12 // -------------------------------------------
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13 // The contents of this file are subject to the Red Hat eCos Public License
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14 // Version 1.1 (the "License"); you may not use this file except in
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15 // compliance with the License. You may obtain a copy of the License at
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16 // http://www.redhat.com/
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17 //
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18 // Software distributed under the License is distributed on an "AS IS"
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19 // basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
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20 // License for the specific language governing rights and limitations under
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21 // the License.
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22 //
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23 // The Original Code is eCos - Embedded Configurable Operating System,
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24 // released September 30, 1998.
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25 //
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26 // The Initial Developer of the Original Code is Red Hat.
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27 // Portions created by Red Hat are
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28 // Copyright (C) 1998, 1999, 2000 Red Hat, Inc.
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29 // All Rights Reserved.
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30 // -------------------------------------------
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31 //
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32 //####COPYRIGHTEND####
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33 //========================================================================
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34 //#####DESCRIPTIONBEGIN####
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35 //
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36 // Author(s): jlarmour
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37 // Contributors:
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38 // Date: 2000-04-19
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39 // Purpose:
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40 // Description:
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41 // Usage: #include <cyg/libc/stdio/stdiosupp.hxx>
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42 //
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43 //####DESCRIPTIONEND####
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44 //
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45 //========================================================================
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46
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47 // CONFIGURATION
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48
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49 #include <pkgconf/libc_stdio.h> // libc stdio configuration
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50
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51 // INCLUDES
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52
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53 #include <cyg/infra/cyg_type.h> // cyg_bool, cyg_ucount8, cyg_ucount16
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54 #include <cyg/libc/stdio/stream.hxx> // Cyg_StdioStream
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55
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56 #ifdef CYGSEM_LIBC_STDIO_THREAD_SAFE_STREAMS
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57 # include <cyg/kernel/mutex.hxx> // mutexes
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58 #endif
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59
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60 // CLASSES
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61
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62 class Cyg_libc_stdio_files
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63 {
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64 // List of open files - global for now
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65 static
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66 Cyg_StdioStream *files[FOPEN_MAX];
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67
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68 # ifdef CYGSEM_LIBC_STDIO_THREAD_SAFE_STREAMS
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69 // lock for the above
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70 static
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71 Cyg_Mutex files_lock;
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72 # endif
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73
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74 public:
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75
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76 # if FOPEN_MAX < 256
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77 typedef cyg_ucount8 fd_t;
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78 # else
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79 typedef cyg_ucount16 fd_t;
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80 # endif
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81
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82 static Cyg_StdioStream *
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83 get_file_stream( fd_t fd );
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84
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85 static void
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86 set_file_stream( fd_t fd, Cyg_StdioStream *stream );
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87
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88
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89 // the following functions lock(), trylock() and unlock() do nothing
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90 // if we haven't got thread-safe streams
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91 static cyg_bool
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92 lock(void);
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93
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94 static cyg_bool
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95 trylock(void);
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96
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97 static void
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98 unlock(void);
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99
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100 }; // class Cyg_libc_stdio_files
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101
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102
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103 // Inline functions for this class
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104 #include <cyg/libc/stdio/stdiofiles.inl>
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105
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106 #endif // CYGONCE_LIBC_STDIO_STDIOFILES_HXX multiple inclusion protection
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107
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108 // EOF stdiofiles.hxx