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/* Copyright (C) 1995,1996 Robert de Bath <rdebath@cix.compulink.co.uk>
* This file is part of the Linux-8086 C library and is distributed
* under the GNU Library General Public License.
*/
/*
* Dec 2000 Manuel Novoa III
*
* Made atexit handling conform to standards... i.e. no args.
* Removed on_exit since it did not match gnu libc definition.
* Combined atexit and __do_exit into one object file.
*
* Feb 2000 Manuel Novoa III
*
* Reworked file after addition of __uClibc_main.
* Changed name of __do_exit to atexit_handler.
* Changed name of __cleanup to __uClibc_cleanup.
* Moved declaration of __uClibc_cleanup to __uClibc_main
* where it is initialized with (possibly weak alias)
* __stdio_close_all.
*/
#include <stdlib.h>
#include <errno.h>
typedef void (*vfuncp) (void);
extern vfuncp __uClibc_cleanup;
#ifdef L_atexit
extern void __stdio_close_all(void);
static vfuncp __atexit_table[__UCLIBC_MAX_ATEXIT];
static int __atexit_count = 0;
static void atexit_handler(void)
{
int count;
/*
* Guard against more functions being added and againt being reinvoked.
*/
__uClibc_cleanup = 0;
/* In reverse order */
for (count = __atexit_count ; count-- ; ) {
(*__atexit_table[count])();
}
__stdio_close_all();
}
int atexit(vfuncp ptr)
{
if ((__uClibc_cleanup == 0) || (__atexit_count >= __UCLIBC_MAX_ATEXIT)) {
errno = ENOMEM;
return -1;
}
if (ptr) {
__uClibc_cleanup = atexit_handler;
__atexit_table[__atexit_count++] = ptr;
}
return 0;
}
#endif
#ifdef L_exit
void exit(int rv)
{
if (__uClibc_cleanup) { /* Not already executing __uClibc_cleanup. */
__uClibc_cleanup();
}
_exit(rv);
}
#endif
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