mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-24 02:03:35 +08:00
47dd3543d3
In C++11 18.5.12 says "Objects shall not be destroyed as a result of calling quick_exit." In C11 quick_exit is silent about thread object destruction. Therefore to make glibc C++ compliant we do not call any thread local destructors. A new regression test verifies the fix. I will note that C++11 18.5.3 makes it clear that C++ defines additional requirements for _Exit() to prevent it from executing destructors. Given that the point of _Exit() is to terminate the process immediately it makes sense the C and C++ should line up and avoid calling destructors. No failures. New regtest passes.
78 lines
2.1 KiB
C
78 lines
2.1 KiB
C
/* Copyright (C) 1991-2016 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>
|
|
|
|
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 struct exit_function *__new_exitfn (struct exit_function_list **listp);
|
|
extern uint64_t __new_exitfn_called 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 */
|