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/* Copyright (C) 1997-2021 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
<https://www.gnu.org/licenses/>. */
#include <atomic.h>
#include <stdlib.h>
#include <set-hooks.h>
#include <libc-internal.h>
#include <unwind-link.h>
#include <dlfcn/dlerror.h>
#include "../nss/nsswitch.h"
#include "../libio/libioP.h"
DEFINE_HOOK (__libc_subfreeres, (void));
symbol_set_define (__libc_freeres_ptrs);
extern void __libpthread_freeres (void)
#if PTHREAD_IN_LIBC && defined SHARED
/* It is possible to call __libpthread_freeres directly in shared
builds with an integrated libpthread. */
attribute_hidden
#else
__attribute__ ((weak))
#endif
;
void __libc_freeres_fn_section
__libc_freeres (void)
{
/* This function might be called from different places. So better
protect for multiple executions since these are fatal. */
static long int already_called;
if (!atomic_compare_and_exchange_bool_acq (&already_called, 1, 0))
{
void *const *p;
call_function_static_weak (__nss_module_freeres);
call_function_static_weak (__nss_action_freeres);
call_function_static_weak (__nss_database_freeres);
_IO_cleanup ();
/* We run the resource freeing after IO cleanup. */
RUN_HOOK (__libc_subfreeres, ());
call_function_static_weak (__libpthread_freeres);
#ifdef SHARED
__libc_unwind_link_freeres ();
#endif
call_function_static_weak (__libc_dlerror_result_free);
for (p = symbol_set_first_element (__libc_freeres_ptrs);
!symbol_set_end_p (__libc_freeres_ptrs, p); ++p)
free (*p);
}
}
libc_hidden_def (__libc_freeres)
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