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+/* Thread-local storage (native Windows implementation).
+ Copyright (C) 2005-2021 Free Software Foundation, Inc.
+
+ This file is free software: you can redistribute it and/or modify
+ it under the terms of the GNU Lesser General Public License as
+ published by the Free Software Foundation; either version 2.1 of the
+ License, or (at your option) any later version.
+
+ This file 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 Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with this program. If not, see <https://www.gnu.org/licenses/>. */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2005. */
+
+#ifndef _WINDOWS_TLS_H
+#define _WINDOWS_TLS_H
+
+#define WIN32_LEAN_AND_MEAN /* avoid including junk */
+#include <windows.h>
+
+typedef DWORD glwthread_tls_key_t;
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+extern int glwthread_tls_key_create (glwthread_tls_key_t *keyp, void (*destructor) (void *));
+extern void *glwthread_tls_get (glwthread_tls_key_t key);
+extern int glwthread_tls_set (glwthread_tls_key_t key, void *value);
+extern int glwthread_tls_key_delete (glwthread_tls_key_t key);
+extern void glwthread_tls_process_destructors (void);
+#define GLWTHREAD_DESTRUCTOR_ITERATIONS 4
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _WINDOWS_TLS_H */