mirror of
https://sourceware.org/git/glibc.git
synced 2025-10-30 10:45:40 +03:00
108 lines
2.8 KiB
C
108 lines
2.8 KiB
C
/* Copyright (C) 1991-2017 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, see
|
|
<http://www.gnu.org/licenses/>. */
|
|
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <unistd.h>
|
|
#include <sysdep.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
|
|
attribute_hidden
|
|
__run_exit_handlers (int status, struct exit_function_list **listp,
|
|
bool run_list_atexit, bool run_dtors)
|
|
{
|
|
/* First, call the TLS destructors. */
|
|
#ifndef SHARED
|
|
if (&__call_tls_dtors != NULL)
|
|
#endif
|
|
if (run_dtors)
|
|
__call_tls_dtors ();
|
|
|
|
/* 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 (*listp != NULL)
|
|
{
|
|
struct exit_function_list *cur = *listp;
|
|
|
|
while (cur->idx > 0)
|
|
{
|
|
const struct exit_function *const f =
|
|
&cur->fns[--cur->idx];
|
|
switch (f->flavor)
|
|
{
|
|
void (*atfct) (void);
|
|
void (*onfct) (int status, void *arg);
|
|
void (*cxafct) (void *arg, int status);
|
|
|
|
case ef_free:
|
|
case ef_us:
|
|
break;
|
|
case ef_on:
|
|
onfct = f->func.on.fn;
|
|
#ifdef PTR_DEMANGLE
|
|
PTR_DEMANGLE (onfct);
|
|
#endif
|
|
onfct (status, f->func.on.arg);
|
|
break;
|
|
case ef_at:
|
|
atfct = f->func.at;
|
|
#ifdef PTR_DEMANGLE
|
|
PTR_DEMANGLE (atfct);
|
|
#endif
|
|
atfct ();
|
|
break;
|
|
case ef_cxa:
|
|
cxafct = f->func.cxa.fn;
|
|
#ifdef PTR_DEMANGLE
|
|
PTR_DEMANGLE (cxafct);
|
|
#endif
|
|
cxafct (f->func.cxa.arg, status);
|
|
break;
|
|
}
|
|
}
|
|
|
|
*listp = cur->next;
|
|
if (*listp != NULL)
|
|
/* Don't free the last element in the chain, this is the statically
|
|
allocate element. */
|
|
free (cur);
|
|
}
|
|
|
|
if (run_list_atexit)
|
|
RUN_HOOK (__libc_atexit, ());
|
|
|
|
_exit (status);
|
|
}
|
|
|
|
|
|
void
|
|
exit (int status)
|
|
{
|
|
__run_exit_handlers (status, &__exit_funcs, true, true);
|
|
}
|
|
libc_hidden_def (exit)
|