eqNBody/pipe.cpp

/*
 * Copyright (c) 2009, Philippe Robert <philippe.robert@gmail.com> 
 *
 * 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 Eyescale Software GmbH 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 THE COPYRIGHT HOLDERS AND CONTRIBUTORS "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 THE COPYRIGHT HOLDER OR CONTRIBUTORS 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.
 */

#include "pipe.h"

#include "config.h"
#include "frameData.h"

using namespace lunchbox;
using namespace std;

namespace eqNbody
{

Pipe::Pipe( eq::Node* parent ) 
    : eq::Pipe( parent ) 
    , _isInitialized( false )
{
}

bool Pipe::configInit( const eq::uint128_t& initID )
{
    if( !eq::Pipe::configInit( initID )) {
        return false;
    }

    Config*         config      = static_cast<Config*>( getConfig() );
    const InitData& initData    = config->getInitData();
    const eq::uint128_t frameDataID = initData.getFrameDataID();

    _data = new SharedData(config);
    LBASSERT( _data );

    FrameData& fd = const_cast<FrameData&>(_data->getFrameData());
    fd.init(initData.getNumBodies());

    const bool mapped = config->mapObject( &fd, frameDataID );
    LBASSERT( mapped );

    return mapped;
}

bool Pipe::configExit()
{
    eq::Config* config = getConfig();
    FrameData& fd = const_cast<FrameData&>(_data->getFrameData());

    config->unmapObject( &fd );
    LBASSERT( _data );
    _data->releaseMemory();
    delete _data;
    return eq::Pipe::configExit();
}

void Pipe::frameStart( const eq::uint128_t& frameID, const uint32_t frameNumber )
{
    
    FrameData& fd = const_cast<FrameData&>(_data->getFrameData());

    // Allocate the CUDA memory after proper CUDA initialisation!
    if( _isInitialized == false) 
    {
        fd.initHostData();
        _isInitialized = true;
    }

    // Sync for the next frame - wait for the data broadcast!
    fd.sync( frameID );
    eq::Pipe::frameStart( frameID, frameNumber );
}
}