locale/freelocale.c

   1 /* Free data allocated by a call to setlocale_r
   2    Copyright (C) 1996,1997,2000,2002,2005,2008 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4    Contributed by Ulrich Drepper <drepper@cygnus.com>, 1996.
   5
   6    The GNU C Library is free software; you can redistribute it and/or
   7    modify it under the terms of the GNU Lesser General Public
   8    License as published by the Free Software Foundation; either
   9    version 2.1 of the License, or (at your option) any later version.
  10
  11    The GNU C Library is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14    Lesser General Public License for more details.
  15
  16    You should have received a copy of the GNU Lesser General Public
  17    License along with the GNU C Library; if not, write to the Free
  18    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  19    02111-1307 USA.  */
  20
  21 #include <locale.h>
  22 #include <stdlib.h>
  23 #include <bits/libc-lock.h>
  24
  25 #include "localeinfo.h"
  26
  27
  28 /* Lock for protecting global data.  */
  29 __libc_rwlock_define (extern , __libc_setlocale_lock attribute_hidden)
  30
  31
  32 void
  33 __freelocale (__locale_t dataset)
  34 {
  35   int cnt;
  36
  37   /* This static object is returned for newlocale (LC_ALL_MASK, "C").  */
  38   if (dataset == _nl_C_locobj_ptr)
  39     return;
  40
  41   /* We modify global data (the usage counts).  */
  42   __libc_rwlock_wrlock (__libc_setlocale_lock);
  43
  44   for (cnt = 0; cnt < __LC_LAST; ++cnt)
  45     if (cnt != LC_ALL && dataset->__locales[cnt]->usage_count != UNDELETABLE)
  46       /* We can remove the data.  */
  47       _nl_remove_locale (cnt, dataset->__locales[cnt]);
  48
  49   /* It's done.  */
  50   __libc_rwlock_unlock (__libc_setlocale_lock);
  51
  52   /* Free the locale_t handle itself.  */
  53   free (dataset);
  54 }
  55 weak_alias (__freelocale, freelocale)