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+/* Timed recursive mutexes (native Windows implementation).
+ Copyright (C) 2005-2024 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, 2019.
+ Based on GCC's gthr-win32.h. */
+
+#ifndef _WINDOWS_TIMEDRECMUTEX_H
+#define _WINDOWS_TIMEDRECMUTEX_H
+
+#define WIN32_LEAN_AND_MEAN /* avoid including junk */
+#include <windows.h>
+
+#include <time.h>
+
+#include "windows-initguard.h"
+
+/* The native Windows documentation says that CRITICAL_SECTION already
+ implements a recursive lock. But we need not rely on it: It's easy to
+ implement a recursive lock without this assumption. */
+
+typedef struct
+ {
+ glwthread_initguard_t guard; /* protects the initialization */
+ DWORD owner;
+ unsigned long depth;
+ HANDLE event;
+ CRITICAL_SECTION lock;
+ }
+ glwthread_timedrecmutex_t;
+
+#define GLWTHREAD_TIMEDRECMUTEX_INIT { GLWTHREAD_INITGUARD_INIT, 0, 0 }
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+extern int glwthread_timedrecmutex_init (glwthread_timedrecmutex_t *mutex);
+extern int glwthread_timedrecmutex_lock (glwthread_timedrecmutex_t *mutex);
+extern int glwthread_timedrecmutex_trylock (glwthread_timedrecmutex_t *mutex);
+extern int glwthread_timedrecmutex_timedlock (glwthread_timedrecmutex_t *mutex,
+ const struct timespec *abstime);
+extern int glwthread_timedrecmutex_unlock (glwthread_timedrecmutex_t *mutex);
+extern int glwthread_timedrecmutex_destroy (glwthread_timedrecmutex_t *mutex);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _WINDOWS_TIMEDRECMUTEX_H */