kolibrios/programs/develop/open watcom/trunk/clib/crt/atexit.c
Sergey Semyonov (Serge) 34c712de5d update CLib startup code
git-svn-id: svn://kolibrios.org@615 a494cfbc-eb01-0410-851d-a64ba20cac60
2007-08-28 10:36:38 +00:00

78 lines
2.7 KiB
C

/****************************************************************************
*
* Open Watcom Project
*
* Portions Copyright (c) 1983-2002 Sybase, Inc. All Rights Reserved.
*
* ========================================================================
*
* This file contains Original Code and/or Modifications of Original
* Code as defined in and that are subject to the Sybase Open Watcom
* Public License version 1.0 (the 'License'). You may not use this file
* except in compliance with the License. BY USING THIS FILE YOU AGREE TO
* ALL TERMS AND CONDITIONS OF THE LICENSE. A copy of the License is
* provided with the Original Code and Modifications, and is also
* available at www.sybase.com/developer/opensource.
*
* The Original Code and all software distributed under the License are
* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
* EXPRESS OR IMPLIED, AND SYBASE AND ALL CONTRIBUTORS HEREBY DISCLAIM
* ALL SUCH WARRANTIES, INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR
* NON-INFRINGEMENT. Please see the License for the specific language
* governing rights and limitations under the License.
*
* ========================================================================
*
* Description: Module for adding functions to the atexit() list, as well
* invoking the functions on library shutdown.
*
****************************************************************************/
#include "variety.h"
#include <stdio.h>
#include <stdlib.h>
#include "rtdata.h"
#include "extfunc.h"
#include "rtinit.h"
#define EXIT_LIMIT 32
static void (* _HUGEDATA _ExitList[EXIT_LIMIT])( void );
static int _ExitCount;
int atexit( void (*func)( void ) )
{
if( _ExitCount < EXIT_LIMIT ) {
_ExitList[ _ExitCount++ ] = func;
return( 0 ); /* indicate added successfully */
}
return( -1 ); /* indicate no room */
}
typedef void exit_fn( void );
#if defined(_M_IX86)
#pragma aux (__outside_CLIB) exit_fn;
#endif
static void _Full_at_exit_rtn( void )
{
int count;
exit_fn *func;
count = _ExitCount;
if( count == ( EXIT_LIMIT + 1 ) ) {
return; /* already done once */
}
_ExitCount = EXIT_LIMIT + 1; /* prevent others being registered */
/* call functions in reverse order of their registration */
while( count != 0 ) {
--count;
func = _ExitList[ count ];
(*func)(); /* invoke user exit routine */
}
}
AYI( _Full_at_exit_rtn, INIT_PRIORITY_PROGRAM + 32 );