59 lines
1.4 KiB
C
59 lines
1.4 KiB
C
/*
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* Copyright (C) 2012 Tobias Brunner
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* Hochschule fuer Technik Rapperswil
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* for more details.
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*/
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/**
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* @defgroup spinlock spinlock
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* @{ @ingroup threading
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*/
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#ifndef THREADING_SPINLOCK_H_
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#define THREADING_SPINLOCK_H_
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typedef struct spinlock_t spinlock_t;
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/**
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* Spin lock wrapper implements a lock with low overhead when the lock is held
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* only for a short time (waiting wastes processor cycles, though).
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*
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* If native spin locks are not available regular mutexes are used as fallback.
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*/
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struct spinlock_t {
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/**
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* Acquire the lock.
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*/
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void (*lock)(spinlock_t *this);
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/**
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* Release the lock.
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*/
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void (*unlock)(spinlock_t *this);
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/**
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* Destroy the instance.
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*/
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void (*destroy)(spinlock_t *this);
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};
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/**
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* Create a spin lock instance.
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*
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* @return unlocked instance
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*/
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spinlock_t *spinlock_create();
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#endif /** THREADING_SPINLOCK_H_ @} */
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