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- /* StarPU --- Runtime system for heterogeneous multicore architectures.
- *
- * Copyright (C) 2008-2011,2014 Université de Bordeaux
- * Copyright (C) 2010,2011,2015,2017 CNRS
- *
- * StarPU 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.
- *
- * StarPU 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 in COPYING.LGPL for more details.
- */
- #ifndef __RWLOCKS_H__
- #define __RWLOCKS_H__
- #include <stdint.h>
- #include <starpu.h>
- /* Dummy implementation of a RW-lock using a spinlock. */
- struct _starpu_rw_lock
- {
- uint32_t busy;
- uint8_t writer;
- uint16_t readercnt;
- };
- /* Initialize the RW-lock */
- void _starpu_init_rw_lock(struct _starpu_rw_lock *lock);
- /* Grab the RW-lock in a write mode */
- void _starpu_take_rw_lock_write(struct _starpu_rw_lock *lock);
- /* Grab the RW-lock in a read mode */
- void _starpu_take_rw_lock_read(struct _starpu_rw_lock *lock);
- /* Try to grab the RW-lock in a write mode. Returns 0 in case of success, -1
- * otherwise. */
- int _starpu_take_rw_lock_write_try(struct _starpu_rw_lock *lock);
- /* Try to grab the RW-lock in a read mode. Returns 0 in case of success, -1
- * otherwise. */
- int _starpu_take_rw_lock_read_try(struct _starpu_rw_lock *lock);
- /* Unlock the RW-lock. */
- void _starpu_release_rw_lock(struct _starpu_rw_lock *lock);
- #endif
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