/* 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
* DISCLAIMED. IN NO EVENT SHALL STANFORD UNIVERSITY BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/ 

#ifndef TASK_Q_
#define TASK_Q_

#include <stdint.h>

typedef struct {
    union {
        uint32_t        v[4];
        struct {
            uint32_t    id;
            uint32_t    len;
            uint32_t    data;
            uint32_t    pad;
        };
    };
} task_t;

struct taskQ_t;
typedef struct taskQ_t taskQ_t;

int tq_enqueue (taskQ_t* tq, task_t *task, int lgrp, int tid);
int tq_enqueue_seq (taskQ_t* tq, task_t *task, int lgrp);
int tq_dequeue (taskQ_t* tq, task_t *task, int lgrp, int tid);
taskQ_t* tq_init (int num_threads);
void tq_reset (taskQ_t* tq, int num_threads);
void tq_finalize (taskQ_t* tq);

#endif /* TASK_Q_ */
