/* Copyright (c) 2007-2009, Stanford University
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*     * Redistributions of source code must retain the above copyright
*       notice, this list of conditions and the following disclaimer.
*     * Redistributions in binary form must reproduce the above copyright
*       notice, this list of conditions and the following disclaimer in the
*       documentation and/or other materials provided with the distribution.
*     * Neither the name of Stanford University nor the names of its 
*       contributors may be used to endorse or promote products derived from 
*       this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY STANFORD UNIVERSITY ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/ 

#ifndef SYNCH_H_
#define SYNCH_H_

//#define MR_LOCK_MCS
#define MR_LOCK_PTMUTEX

typedef void* mr_lock_t;

typedef struct mr_lock_ops {
    mr_lock_t   (*alloc)(void);
    void        (*acquire)(mr_lock_t l);
    void        (*release)(mr_lock_t l);
    mr_lock_t   (*alloc_per_thread)(mr_lock_t l);
    void        (*free)(mr_lock_t l);
    void        (*free_per_thread)(mr_lock_t l);
} mr_lock_ops;

void        lock_free(mr_lock_t l);
void        lock_acquire(mr_lock_t l);
void        lock_release(mr_lock_t l);
mr_lock_t   lock_alloc(void);
mr_lock_t   lock_alloc_per_thread(mr_lock_t parent);
void        lock_free_per_thread(mr_lock_t mr);

#endif /* SYNCH_H_ */
