1 /* Duplicate handle for selection of locales.
2 Copyright (C) 1997, 2000, 2001, 2002 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4 Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
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.
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.
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
22 #include <bits/libc-lock.h>
26 #include <localeinfo.h>
29 /* Lock for protecting global data. */
30 __libc_lock_define (extern , __libc_setlocale_lock attribute_hidden
)
34 __duplocale (__locale_t dataset
)
40 /* Calculate the total space we need to store all the names. */
41 for (cnt
= 0; cnt
< __LC_LAST
; ++cnt
)
42 if (cnt
!= LC_ALL
&& dataset
->__names
[cnt
] != _nl_C_name
)
43 names_len
+= strlen (dataset
->__names
[cnt
]) + 1;
46 result
= malloc (sizeof (struct __locale_struct
) + names_len
);
50 char *namep
= (char *) (result
+ 1);
52 /* We modify global data (the usage counts). */
53 __libc_lock_lock (__libc_setlocale_lock
);
55 for (cnt
= 0; cnt
< __LC_LAST
; ++cnt
)
58 result
->__locales
[cnt
] = dataset
->__locales
[cnt
];
59 if (result
->__locales
[cnt
]->usage_count
< MAX_USAGE_COUNT
)
60 ++result
->__locales
[cnt
]->usage_count
;
62 if (dataset
->__names
[cnt
] == _nl_C_name
)
63 result
->__names
[cnt
] = _nl_C_name
;
66 result
->__names
[cnt
] = namep
;
67 namep
= __stpcpy (namep
, dataset
->__names
[cnt
]) + 1;
71 /* Update the special members. */
72 result
->__ctype_b
= dataset
->__ctype_b
;
73 result
->__ctype_tolower
= dataset
->__ctype_tolower
;
74 result
->__ctype_toupper
= dataset
->__ctype_toupper
;
77 __libc_lock_unlock (__libc_setlocale_lock
);
82 weak_alias (__duplocale
, duplocale
)