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/* Timed recursive mutexes (native Windows implementation).
Copyright (C) 2005-2022 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 */
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