//=========================================================================
//
//      exit.cxx
//
//      Implementation of the exit() function
//
//=========================================================================
// ####ECOSGPLCOPYRIGHTBEGIN####                                            
// -------------------------------------------                              
// This file is part of eCos, the Embedded Configurable Operating System.   
// Copyright (C) 1998, 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
//
// eCos is free software; you can redistribute it and/or modify it under    
// the terms of the GNU General Public License as published by the Free     
// Software Foundation; either version 2 or (at your option) any later      
// version.                                                                 
//
// eCos is distributed in the hope that it will be useful, but WITHOUT      
// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or    
// FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License    
// for more details.                                                        
//
// You should have received a copy of the GNU General Public License        
// along with eCos; if not, write to the Free Software Foundation, Inc.,    
// 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.            
//
// As a special exception, if other files instantiate templates or use      
// macros or inline functions from this file, or you compile this file      
// and link it with other works to produce a work based on this file,       
// this file does not by itself cause the resulting work to be covered by   
// the GNU General Public License. However the source code for this file    
// must still be made available in accordance with section (3) of the GNU   
// General Public License v2.                                               
//
// This exception does not invalidate any other reasons why a work based    
// on this file might be covered by the GNU General Public License.         
// -------------------------------------------                              
// ####ECOSGPLCOPYRIGHTEND####                                              
//=========================================================================
//#####DESCRIPTIONBEGIN####
//
// Author(s):    jlarmour
// Contributors: 
// Date:         2000-04-30
// Purpose:     
// Description: 
// Usage:       
//
//####DESCRIPTIONEND####
//
//=========================================================================

// CONFIGURATION

#include <pkgconf/libc_startup.h>   // Configuration header

// INCLUDES

#include <cyg/infra/cyg_type.h>    // Common type definitions and support
#include <cyg/infra/cyg_trac.h>    // Common tracing support
#include <cyg/infra/cyg_ass.h>     // Common assertion support
#include <stdio.h>                 // fflush()
#include <errno.h>                 // errno
#include <stdlib.h>                // Header for all stdlib functions
                                   // (like this one)
// EXTERNAL PROTOTYPES

externC void
cyg_libc_invoke_atexit_handlers( void );

// FUNCTIONS

externC void
exit( int status )
{
    CYG_REPORT_FUNCTION(); // shouldn't return, but CYG_FAIL will catch it
    CYG_REPORT_FUNCARG1DV( status );
    
    // Strictly the only thing exit() does is invoke the atexit handlers
    // and flush stdio buffers. Anything else is for _exit() 
    // within the implementation)

#ifdef CYGFUN_LIBC_ATEXIT
    // we start with the atexit handlers
    cyg_libc_invoke_atexit_handlers();
#endif

#ifdef CYGSEM_LIBC_EXIT_CALLS_FFLUSH

    int rc;

    CYG_TRACE0( true, "Calling fflush( NULL )" );
    rc = fflush( NULL );

    CYG_TRACE2( rc != 0, "fflush() returned non-zero. It returned %d and "
                "errno indicates the error: %s", rc, strerror(errno) );
#endif

    _exit( status );

    CYG_FAIL( "__libc_exit() returning!!!" );

    CYG_REPORT_RETURN();
} // __libc_exit()

// EOF exit.cxx
