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comparison packages/language/c/libc/current/src/stdlib/exit.cxx @ 0:3111d98ba7b3 ecos-v1_1-release

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Initial commit of eCos version 1.1
author jlarmour
date Tue, 11 May 1999 11:16:07 +0000
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children 443894e2e912
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-1:000000000000 0:3111d98ba7b3
1 //=========================================================================
2 //
3 // exit.cxx
4 //
5 // Implementation of the exit() function
6 //
7 //=========================================================================
8 //####COPYRIGHTBEGIN####
9 //
10 // -------------------------------------------
11 // The contents of this file are subject to the Cygnus eCos Public License
12 // Version 1.0 (the "License"); you may not use this file except in
13 // compliance with the License. You may obtain a copy of the License at
14 // http://sourceware.cygnus.com/ecos
15 //
16 // Software distributed under the License is distributed on an "AS IS"
17 // basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
18 // License for the specific language governing rights and limitations under
19 // the License.
20 //
21 // The Original Code is eCos - Embedded Cygnus Operating System, released
22 // September 30, 1998.
23 //
24 // The Initial Developer of the Original Code is Cygnus. Portions created
25 // by Cygnus are Copyright (C) 1998 Cygnus Solutions. All Rights Reserved.
26 // -------------------------------------------
27 //
28 //####COPYRIGHTEND####
29 //=========================================================================
30 //#####DESCRIPTIONBEGIN####
31 //
32 // Author(s): jlarmour
33 // Contributors: jlarmour@cygnus.co.uk
34 // Date: 1998-08-31
35 // Purpose:
36 // Description:
37 // Usage:
38 //
39 //####DESCRIPTIONEND####
40 //
41 //=========================================================================
42
43 // CONFIGURATION
44
45 #include <pkgconf/libc.h> // Configuration header
46
47 // Include the C library?
48 #ifdef CYGPKG_LIBC
49
50 // INCLUDES
51
52 #include <cyg/infra/cyg_type.h> // Common type definitions and support
53 #include <cyg/infra/cyg_trac.h> // Common tracing support
54 #include <cyg/infra/cyg_ass.h> // Common assertion support
55 #include <stdio.h> // fflush()
56 #include <errno.h> // errno
57 #include <stdlib.h> // Header for all stdlib functions
58 // (like this one)
59 #include "clibincl/stdlibsupp.hxx" // Support for stdlib functions
60
61 // SYMBOLS
62
63 externC void
64 exit( int ) CYGPRI_LIBC_WEAK_ALIAS("__libc_exit") CYGPRI_LIBC_NORETURN;
65
66 // FUNCTIONS
67
68 externC void
69 __libc_exit( int status )
70 {
71 CYG_REPORT_FUNCTION(); // shouldn't return, but CYG_FAIL will catch it
72 CYG_REPORT_FUNCARG1DV( status );
73
74 // Strictly the only thing exit() does is invoke the atexit handlers
75 // and flush stdio buffers. Anything else is for _exit() (aka
76 // __libc__exit() within the implementation)
77
78 // we start with the atexit handlers
79 cyg_libc_invoke_atexit_handlers();
80
81 // we only need to flush stdio if we have buffered I/O.
82 #if defined(CYGPKG_LIBC_STDIO) && \
83 defined(CYGSEM_LIBC_STDIO_WANT_BUFFERED_IO)
84
85 int rc;
86
87 CYG_TRACE0( true, "Calling fflush( NULL )" );
88 rc = fflush( NULL );
89
90 CYG_TRACE2( rc != 0, "fflush() returned non-zero. It returned %d and "
91 "errno indicates the error: %s", rc, strerror(errno) );
92
93
94 #endif
95
96 __libc__exit( status );
97
98 CYG_FAIL( "__libc_exit() returning!!!" );
99
100 CYG_REPORT_RETURN();
101 } // __libc_exit()
102
103
104 #endif // ifdef CYGPKG_LIBC
105
106 // EOF exit.cxx