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-rw-r--r--bits/libc-tsd.h51
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diff --git a/bits/libc-tsd.h b/bits/libc-tsd.h
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+/* libc-internal interface for thread-specific data. Stub version.
+ Copyright (C) 1998 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Library General Public License as
+ published by the Free Software Foundation; either version 2 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
+ Library General Public License for more details.
+
+ You should have received a copy of the GNU Library General Public
+ License along with the GNU C Library; see the file COPYING.LIB. If not,
+ write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
+
+#ifndef _BITS_LIBC_TSD_H
+#define _BITS_LIBC_TSD_H 1
+
+/* This file defines the following macros for accessing a small fixed
+ set of thread-specific `void *' data used only internally by libc.
+
+ __libc_tsd_define(CLASS, KEY) -- Define or declare a `void *' datum
+ for KEY. CLASS can be `static' for
+ keys used in only one source file,
+ empty for global definitions, or
+ `extern' for global declarations.
+ __libc_tsd_get(KEY) -- Return the `void *' datum for KEY.
+ __libc_tsd_set(KEY, VALUE) -- Set the datum for KEY to VALUE.
+
+ The set of available KEY's will usually be provided as an enum,
+ and contains (at least):
+ _LIBC_TSD_KEY_MALLOC
+ _LIBC_TSD_KEY_DL_ERROR
+ All uses must be the literal _LIBC_TSD_* name in the __libc_tsd_* macros.
+ Some implementations may not provide any enum at all and instead
+ using string pasting in the macros. */
+
+/* This is the generic/stub implementation for wholly single-threaded
+ systems. We don't define an enum for the possible key values, because
+ the KEYs translate directly into variables by macro magic. */
+
+#define __libc_tsd_define(CLASS, KEY) CLASS void *__libc_tsd_##KEY##_data;
+#define __libc_tsd_get(KEY) (__libc_tsd_##KEY##_data)
+#define __libc_tsd_set(KEY, VALUE) (__libc_tsd_##KEY##_data = (VALUE))
+
+
+#endif /* bits/libc-tsd.h */