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/* Copyright (C) 1991,95,96,97,99,2001,2002,2005 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include "exit.h"
#include "set-hooks.h"
DEFINE_HOOK (__libc_atexit, (void))
/* Call all functions registered with `atexit' and `on_exit',
in the reverse of the order in which they were registered
perform stdio cleanup, and terminate program execution with STATUS. */
void
exit (int status)
{
/* We do it this way to handle recursive calls to exit () made by
the functions registered with `atexit' and `on_exit'. We call
everyone on the list and use the status value in the last
exit (). */
while (__exit_funcs != NULL)
{
struct exit_function_list *old;
while (__exit_funcs->idx > 0)
{
const struct exit_function *const f =
&__exit_funcs->fns[--__exit_funcs->idx];
switch (f->flavor)
{
case ef_free:
case ef_us:
break;
case ef_on:
(*f->func.on.fn) (status, f->func.on.arg);
break;
case ef_at:
(*f->func.at) ();
break;
case ef_cxa:
(*f->func.cxa.fn) (f->func.cxa.arg, status);
break;
}
}
old = __exit_funcs;
__exit_funcs = __exit_funcs->next;
if (__exit_funcs != NULL)
/* Don't free the last element in the chain, this is the statically
allocate element. */
free (old);
}
RUN_HOOK (__libc_atexit, ());
_exit (status);
}
libc_hidden_def (exit)
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