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/* -*- c++ -*- */
/*
* Copyright 2007,2008 Free Software Foundation, Inc.
*
* This file is part of GNU Radio
*
* GNU Radio is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3, or (at your option)
* any later version.
*
* GNU Radio 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#ifndef INCLUDED_GC_JD_QUEUE_DATA_H
#define INCLUDED_GC_JD_QUEUE_DATA_H
#include "gc_types.h"
#include "gc_job_desc.h"
__GC_BEGIN_DECLS
/*!
* \brief (Lock free someday...) queue for job descriptors
*
* This is the main data structure shared between PPEs and SPEs.
* It is used to enqueue work for SPEs. SPEs or PPEs may enqueue
* work. SPE's dequeue from here.
*
* FIXME make it lock free ;) For now, use a spin lock.
*/
typedef struct gc_jd_q_links
{
gc_eaddr_t head _AL16;
gc_eaddr_t tail _AL16;
} gc_jd_q_links_t;
typedef struct gc_jd_q_mutex
{
uint32_t mutex; // libsync mutex (spin lock)
uint32_t _pad[31]; // pad to cache line so we can use putlluc on SPE
} _AL128 gc_jd_q_mutex_t;
typedef struct gc_jd_q_flag
{
uint32_t flag; // host writes this after enqueuing
uint32_t _pad[31]; // pad to cache line
} _AL128 gc_jd_q_flag_t;
typedef struct gc_jd_queue
{
gc_jd_q_links_t l;
gc_jd_q_mutex_t m;
gc_jd_q_flag_t f;
} _AL128 gc_jd_queue_t;
__GC_END_DECLS
#endif /* INCLUDED_GC_JD_QUEUE_DATA_H */
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