mutex.h

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/*
 * Copyright (c) 2018, Pinecone Inc. and Contributors. All rights reserved.
 *
 * SPDX-License-Identifier: BSD-3-Clause
 */
 
#ifndef __METAL_MUTEX__H__
#error "Include metal/mutex.h instead of metal/nuttx/mutex.h"
#endif
 
#ifndef __METAL_NUTTX_MUTEX__H__
#define __METAL_NUTTX_MUTEX__H__
 
#include <nuttx/mutex.h>
 
#ifdef __cplusplus
extern "C" {
#endif
 
typedef rmutex_t metal_mutex_t;
 
/*
 * METAL_MUTEX_INIT - used for initializing an mutex element in a static struct
 * or global
 */
#define METAL_MUTEX_INIT(m) NXRMUTEX_INITIALIZER
/*
 * METAL_MUTEX_DEFINE - used for defining and initializing a global or
 * static singleton mutex
 */
#define METAL_MUTEX_DEFINE(m) metal_mutex_t m = NXRMUTEX_INITIALIZER
 
static inline void __metal_mutex_init(metal_mutex_t *mutex)
{
        nxrmutex_init(mutex);
}
 
static inline void __metal_mutex_deinit(metal_mutex_t *mutex)
{
        nxrmutex_destroy(mutex);
}
 
static inline int __metal_mutex_try_acquire(metal_mutex_t *mutex)
{
        return nxrmutex_trylock(mutex);
}
 
static inline void __metal_mutex_acquire(metal_mutex_t *mutex)
{
        nxrmutex_lock(mutex);
}
 
static inline void __metal_mutex_release(metal_mutex_t *mutex)
{
        nxrmutex_unlock(mutex);
}
 
static inline int __metal_mutex_is_acquired(metal_mutex_t *mutex)
{
        return nxrmutex_is_locked(mutex);
}
 
#ifdef __cplusplus
}
#endif
 
#endif /* __METAL_NUTTX_MUTEX__H__ */