1 /* libc-internal interface for thread-specific data. LinuxThreads version.
2 Copyright (C) 1997,98,99,2001,02 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public License as
7 published by the Free Software Foundation; either version 2.1 of the
8 License, or (at your option) any later version.
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; see the file COPYING.LIB. If not,
17 write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
18 Boston, MA 02111-1307, USA. */
20 #ifndef _BITS_LIBC_TSD_H
21 #define _BITS_LIBC_TSD_H 1
23 /* Fast thread-specific data internal to libc. */
24 enum __libc_tsd_key_t { _LIBC_TSD_KEY_MALLOC = 0,
25 _LIBC_TSD_KEY_DL_ERROR,
26 _LIBC_TSD_KEY_RPC_VARS,
28 _LIBC_TSD_KEY_CTYPE_B,
29 _LIBC_TSD_KEY_CTYPE_TOLOWER,
30 _LIBC_TSD_KEY_CTYPE_TOUPPER,
35 #if USE_TLS && HAVE___THREAD
37 /* When __thread works, the generic definition is what we want. */
38 # include <sysdeps/generic/bits/libc-tsd.h>
42 extern void *(*__libc_internal_tsd_get) (enum __libc_tsd_key_t) __THROW;
43 extern int (*__libc_internal_tsd_set) (enum __libc_tsd_key_t,
44 __const void *) __THROW;
45 extern void **(*const __libc_internal_tsd_address) (enum __libc_tsd_key_t)
46 __THROW __attribute__ ((__const__));
48 #define __libc_tsd_address(KEY) \
49 (__libc_internal_tsd_address != NULL \
50 ? __libc_internal_tsd_address (_LIBC_TSD_KEY_##KEY) \
51 : &__libc_tsd_##KEY##_data)
53 #define __libc_tsd_define(CLASS, KEY) CLASS void *__libc_tsd_##KEY##_data;
54 #define __libc_tsd_get(KEY) \
55 (__libc_internal_tsd_get != NULL \
56 ? __libc_internal_tsd_get (_LIBC_TSD_KEY_##KEY) \
57 : __libc_tsd_##KEY##_data)
58 #define __libc_tsd_set(KEY, VALUE) \
59 (__libc_internal_tsd_set != NULL \
60 ? __libc_internal_tsd_set (_LIBC_TSD_KEY_##KEY, (VALUE)) \
61 : ((__libc_tsd_##KEY##_data = (VALUE)), 0))
65 #endif /* bits/libc-tsd.h */