annotate packages/language/c/libc/current/src/stdlib/exit.cxx @ 64:c38311975d4f ecos-sw-2000-01-28

Merge from eCos master repository on 2000-01-28-04:28:11-GMT
author jlarmour
date Fri, 28 Jan 2000 04:59:39 +0000
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1 //=========================================================================
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2 //
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3 // exit.cxx
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4 //
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5 // Implementation of the exit() function
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6 //
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7 //=========================================================================
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8 //####COPYRIGHTBEGIN####
64
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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 1.0 (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://sourceware.cygnus.com/ecos
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15 //
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16 // Software distributed under the License is distributed on an
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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: 1998-08-31
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37 // Purpose:
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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 // Include the C library?
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50 #ifdef CYGPKG_LIBC
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51
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52 // INCLUDES
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53
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54 #include <cyg/infra/cyg_type.h> // Common type definitions and support
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55 #include <cyg/infra/cyg_trac.h> // Common tracing support
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56 #include <cyg/infra/cyg_ass.h> // Common assertion support
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57 #include <stdio.h> // fflush()
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58 #include <errno.h> // errno
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59 #include <stdlib.h> // Header for all stdlib functions
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60 // (like this one)
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61 #include "clibincl/stdlibsupp.hxx" // Support for stdlib functions
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62
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63 // SYMBOLS
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64
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65 externC void
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66 exit( int ) CYGBLD_ATTRIB_WEAK_ALIAS(__libc_exit) CYGBLD_ATTRIB_NORET;
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67
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68 // FUNCTIONS
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69
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70 externC void
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71 __libc_exit( int status )
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72 {
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73 CYG_REPORT_FUNCTION(); // shouldn't return, but CYG_FAIL will catch it
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74 CYG_REPORT_FUNCARG1DV( status );
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75
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76 // Strictly the only thing exit() does is invoke the atexit handlers
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77 // and flush stdio buffers. Anything else is for _exit() (aka
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78 // __libc__exit() within the implementation)
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79
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80 #ifdef CYGFUN_LIBC_ATEXIT
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81 // we start with the atexit handlers
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82 cyg_libc_invoke_atexit_handlers();
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83 #endif
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84
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85 #ifdef CYGSEM_LIBC_EXIT_CALLS_FFLUSH
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86
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87 int rc;
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88
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89 CYG_TRACE0( true, "Calling fflush( NULL )" );
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90 rc = fflush( NULL );
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91
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92 CYG_TRACE2( rc != 0, "fflush() returned non-zero. It returned %d and "
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93 "errno indicates the error: %s", rc, strerror(errno) );
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94 #endif
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95
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96 __libc__exit( status );
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97
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98 CYG_FAIL( "__libc_exit() returning!!!" );
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99
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100 CYG_REPORT_RETURN();
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101 } // __libc_exit()
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102
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103
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104 #endif // ifdef CYGPKG_LIBC
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105
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106 // EOF exit.cxx