1  /* Table that maps a locale object to the names of the locale categories.
       2     Copyright (C) 2018-2023 Free Software Foundation, Inc.
       3  
       4     This program is free software: you can redistribute it and/or modify
       5     it under the terms of the GNU Lesser General Public License as published by
       6     the Free Software Foundation; either version 2.1 of the License, or
       7     (at your option) any later version.
       8  
       9     This program is distributed in the hope that it will be useful,
      10     but WITHOUT ANY WARRANTY; without even the implied warranty of
      11     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
      12     GNU Lesser General Public License for more details.
      13  
      14     You should have received a copy of the GNU Lesser General Public License
      15     along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
      16  
      17  /* Written by Bruno Haible <bruno@clisp.org>, 2018.  */
      18  
      19  #include <config.h>
      20  
      21  #if HAVE_WORKING_USELOCALE && HAVE_NAMELESS_LOCALES
      22  
      23  /* Specification.  */
      24  #include "localename-table.h"
      25  
      26  #include <stdint.h>
      27  
      28  /* A hash function for pointers.  */
      29  size_t _GL_ATTRIBUTE_CONST
      30  locale_hash_function (locale_t x)
      31  {
      32    uintptr_t p = (uintptr_t) x;
      33    size_t h = ((p % 4177) << 12) + ((p % 79) << 6) + (p % 61);
      34    return h;
      35  }
      36  
      37  struct locale_hash_node * locale_hash_table[LOCALE_HASH_TABLE_SIZE]
      38    /* = { NULL, ..., NULL } */;
      39  
      40  gl_rwlock_define_initialized(, locale_lock)
      41  
      42  #else
      43  
      44  /* This declaration is solely to ensure that after preprocessing
      45     this file is never empty.  */
      46  typedef int dummy;
      47  
      48  #endif