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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 // _exit() as from POSIX 1003.1 section 3.2.2 "Terminate a process" |
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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 Cygnus 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 "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 Cygnus Operating System, released |
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22 // September 30, 1998. |
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23 // |
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24 // The Initial Developer of the Original Code is Cygnus. Portions created |
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25 // by Cygnus are Copyright (C) 1998,1999 Cygnus Solutions. All Rights Reserved. |
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26 // ------------------------------------------- |
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27 // |
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28 //####COPYRIGHTEND#### |
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29 //======================================================================== |
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30 //#####DESCRIPTIONBEGIN#### |
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31 // |
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32 // Author(s): jlarmour |
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33 // Contributors: jlarmour |
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34 // Date: 1999-01-21 |
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35 // Purpose: Provides POSIX 1003.1 _exit() function |
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36 // Description: |
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37 // Usage: |
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38 // |
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39 //####DESCRIPTIONEND#### |
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40 // |
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41 //======================================================================== |
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42 |
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43 // CONFIGURATION |
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44 |
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45 #include <pkgconf/libc.h> // C library configuration header |
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46 |
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47 // INCLUDES |
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48 |
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49 #include <cyg/infra/cyg_type.h> // Common type definitions and support |
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50 #include <cyg/infra/cyg_trac.h> // Common tracing support |
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51 #include <cyg/infra/cyg_ass.h> // Common assertion support |
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52 #include <stdlib.h> // Header for all stdlib functions |
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53 // (like this one) |
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54 #include "clibincl/stdlibsupp.hxx" // Support for stdlib functions |
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55 #ifdef CYGPKG_KERNEL |
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56 # include <pkgconf/kernel.h> // kernel configuration |
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57 # include <cyg/kernel/thread.hxx> // eCos kernel for thread termination |
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58 # include <cyg/kernel/thread.inl> // and |
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59 # include <cyg/kernel/sched.hxx> // for stopping the scheduler |
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60 # include <cyg/kernel/sched.inl> |
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61 #endif |
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62 |
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63 |
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64 // SYMBOLS |
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65 |
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66 externC void |
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67 _exit( int ) CYGBLD_ATTRIB_WEAK_ALIAS(__libc__exit) CYGBLD_ATTRIB_NORET; |
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68 |
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69 // FUNCTIONS |
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70 |
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71 externC void |
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72 __libc__exit( int status ) |
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73 { |
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74 CYG_REPORT_FUNCTION(); // shouldn't return, but CYG_FAIL will catch it |
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75 CYG_REPORT_FUNCARG1DV( status ); |
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76 |
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77 #ifdef CYGPKG_KERNEL |
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78 |
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79 # ifdef CYGSEM_LIBC_EXIT_STOPS_SYSTEM |
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80 |
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81 Cyg_Scheduler::lock(); // prevent rescheduling |
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82 |
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83 for (;;) |
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84 CYG_EMPTY_STATEMENT; |
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85 |
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86 # else |
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87 |
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88 Cyg_Thread::exit(); |
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89 |
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90 # endif |
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91 #endif |
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92 |
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93 // loop forever |
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94 for (;;) |
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95 CYG_EMPTY_STATEMENT; |
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96 |
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97 CYG_FAIL( "__libc__exit() returning!!!" ); |
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98 |
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99 CYG_REPORT_RETURN(); |
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100 } // _exit() |
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101 |
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102 |
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103 // EOF _exit.cxx |
