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/* Copyright (c) 2015, Linaro Limited
* All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
/**
* @file
*
* ODP recursive spinlock
*/
#ifndef ODP_API_SPINLOCK_RECURSIVE_H_
#define ODP_API_SPINLOCK_RECURSIVE_H_
#include <odp/visibility_begin.h>
#ifdef __cplusplus
extern "C" {
#endif
/**
* @addtogroup odp_locks
* @details
* <b> Recursive spin lock (odp_spinlock_recursive_t) </b>
*
* This is recursive version of the spin lock. A thread can acquire the lock
* multiple times without a deadlock. To release the lock, the thread must
* unlock it the same number of times.
* @{
*/
/**
* @typedef odp_spinlock_recursive_t
* Recursive spinlock
*/
/**
* Initialize recursive spinlock.
*
* @param lock Pointer to a lock
*/
void odp_spinlock_recursive_init(odp_spinlock_recursive_t *lock);
/**
* Acquire recursive spinlock.
*
* @param lock Pointer to a lock
*/
void odp_spinlock_recursive_lock(odp_spinlock_recursive_t *lock);
/**
* Try to acquire recursive spinlock.
*
* @param lock Pointer to a lock
*
* @retval 1 lock acquired
* @retval 0 lock not acquired
*/
int odp_spinlock_recursive_trylock(odp_spinlock_recursive_t *lock);
/**
* Release recursive spinlock.
*
* @param lock Pointer to a lock
*/
void odp_spinlock_recursive_unlock(odp_spinlock_recursive_t *lock);
/**
* Check if recursive spinlock is locked.
*
* @param lock Pointer to a lock
*
* @retval 1 lock is locked
* @retval 0 lock is not locked
*/
int odp_spinlock_recursive_is_locked(odp_spinlock_recursive_t *lock);
/**
* @}
*/
#ifdef __cplusplus
}
#endif
#include <odp/visibility_end.h>
#endif
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