688903eb3e
* All files with FSF copyright notices: Update copyright dates using scripts/update-copyrights. * locale/programs/charmap-kw.h: Regenerated. * locale/programs/locfile-kw.h: Likewise.
95 lines
2.8 KiB
C
95 lines
2.8 KiB
C
/* Copyright (C) 1991-2018 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/>. */
|
|
|
|
#ifndef _EXIT_H
|
|
#define _EXIT_H 1
|
|
|
|
#include <stdbool.h>
|
|
#include <stdint.h>
|
|
#include <libc-lock.h>
|
|
|
|
enum
|
|
{
|
|
ef_free, /* `ef_free' MUST be zero! */
|
|
ef_us,
|
|
ef_on,
|
|
ef_at,
|
|
ef_cxa
|
|
};
|
|
|
|
struct exit_function
|
|
{
|
|
/* `flavour' should be of type of the `enum' above but since we need
|
|
this element in an atomic operation we have to use `long int'. */
|
|
long int flavor;
|
|
union
|
|
{
|
|
void (*at) (void);
|
|
struct
|
|
{
|
|
void (*fn) (int status, void *arg);
|
|
void *arg;
|
|
} on;
|
|
struct
|
|
{
|
|
void (*fn) (void *arg, int status);
|
|
void *arg;
|
|
void *dso_handle;
|
|
} cxa;
|
|
} func;
|
|
};
|
|
struct exit_function_list
|
|
{
|
|
struct exit_function_list *next;
|
|
size_t idx;
|
|
struct exit_function fns[32];
|
|
};
|
|
|
|
extern struct exit_function_list *__exit_funcs attribute_hidden;
|
|
extern struct exit_function_list *__quick_exit_funcs attribute_hidden;
|
|
extern uint64_t __new_exitfn_called attribute_hidden;
|
|
|
|
/* True once all registered atexit/at_quick_exit/onexit handlers have been
|
|
called */
|
|
extern bool __exit_funcs_done attribute_hidden;
|
|
|
|
/* This lock protects __exit_funcs, __quick_exit_funcs, __exit_funcs_done
|
|
and __new_exitfn_called globals against simultaneous access from
|
|
atexit/on_exit/at_quick_exit in multiple threads, and also from
|
|
simultaneous access while another thread is in the middle of calling
|
|
exit handlers. See BZ#14333. Note: for lists, the entire list, and
|
|
each associated entry in the list, is protected for all access by this
|
|
lock. */
|
|
__libc_lock_define (extern, __exit_funcs_lock);
|
|
|
|
|
|
extern struct exit_function *__new_exitfn (struct exit_function_list **listp)
|
|
attribute_hidden;
|
|
|
|
extern void __run_exit_handlers (int status,
|
|
struct exit_function_list **listp,
|
|
bool run_list_atexit, bool run_dtors)
|
|
attribute_hidden __attribute__ ((__noreturn__));
|
|
|
|
extern int __internal_atexit (void (*func) (void *), void *arg, void *d,
|
|
struct exit_function_list **listp)
|
|
attribute_hidden;
|
|
extern int __cxa_at_quick_exit (void (*func) (void *), void *d);
|
|
|
|
|
|
#endif /* exit.h */
|