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//========================================================================
//
// atexit.cxx
//
// Implementation of the atexit() 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
// Include atexit() ?
#ifdef CYGFUN_LIBC_ATEXIT
// 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 <stdlib.h> // Header for all stdlib functions
// (like this one)
// STATICS
// cyg_libc_atexit_handlers contains the functions to call.
// cyg_libc_atexit_handlers_count contains the number of valid handlers
// or you can consider the next free handler slot in
// cyg_libc_atexit_handlers.
static __atexit_fn_t
cyg_libc_atexit_handlers[ CYGNUM_LIBC_ATEXIT_HANDLERS ];
static cyg_ucount32 cyg_libc_atexit_handlers_count;
// FUNCTIONS
externC void
cyg_libc_invoke_atexit_handlers( void )
{
CYG_REPORT_FUNCNAME( "cyg_libc_invoke_atexit_handlers");
CYG_REPORT_FUNCARGVOID();
cyg_ucount32 i;
for (i=cyg_libc_atexit_handlers_count; i>0; --i) {
CYG_TRACE1( true,
"Calling function registered with atexit at addr %08x",
cyg_libc_atexit_handlers[i-1] );
CYG_CHECK_FUNC_PTR( cyg_libc_atexit_handlers[i-1],
"Function to call in atexit handler list "
"isn't valid! Even though it was when "
"entered!" );
(*cyg_libc_atexit_handlers[i-1])();
} // for
CYG_REPORT_RETURN();
} // cyg_libc_invoke_atexit_handlers()
externC int
atexit( __atexit_fn_t func_to_register )
{
CYG_REPORT_FUNCNAMETYPE( "atexit", "returning %d" );
CYG_REPORT_FUNCARG1XV( func_to_register );
CYG_CHECK_FUNC_PTR( func_to_register,
"atexit() not passed a valid function argument!" );
// have we any slots left?
if (cyg_libc_atexit_handlers_count >=
sizeof(cyg_libc_atexit_handlers)/sizeof(__atexit_fn_t) ) {
CYG_REPORT_RETVAL( 1 );
return 1; // failure
} // if
cyg_libc_atexit_handlers[cyg_libc_atexit_handlers_count++] =
func_to_register;
CYG_REPORT_RETVAL(0);
return 0;
} // atexit()
#endif // ifdef CYGFUN_LIBC_ATEXIT
// EOF atexit.cxx
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