glibc/locale/freelocale.c

55 lines
1.7 KiB
C

/* Free data allocated by a call to setlocale_r
Copyright (C) 1996-2020 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@cygnus.com>, 1996.
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 <locale.h>
#include <stdlib.h>
#include <libc-lock.h>
#include "localeinfo.h"
/* Lock for protecting global data. */
__libc_rwlock_define (extern , __libc_setlocale_lock attribute_hidden)
void
__freelocale (locale_t dataset)
{
int cnt;
/* This static object is returned for newlocale (LC_ALL_MASK, "C"). */
if (dataset == _nl_C_locobj_ptr)
return;
/* We modify global data (the usage counts). */
__libc_rwlock_wrlock (__libc_setlocale_lock);
for (cnt = 0; cnt < __LC_LAST; ++cnt)
if (cnt != LC_ALL && dataset->__locales[cnt]->usage_count != UNDELETABLE)
/* We can remove the data. */
_nl_remove_locale (cnt, dataset->__locales[cnt]);
/* It's done. */
__libc_rwlock_unlock (__libc_setlocale_lock);
/* Free the locale_t handle itself. */
free (dataset);
}
weak_alias (__freelocale, freelocale)