CloudIO.C

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-------------------------------------------------------------------------------
License
    This file is part of OpenFOAM.
 
    OpenFOAM 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 of the License, or
    (at your option) any later version.
 
    OpenFOAM 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 OpenFOAM.  If not, see <http://www.gnu.org/licenses/>.
 
\*---------------------------------------------------------------------------*/
 
#include "Cloud.H"
#include "Time.H"
#include "IOPosition.H"
#include "timeIOdictionary.H"
 
// * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
 
template<class ParticleType>
Foam::word Foam::Cloud<ParticleType>::cloudPropertiesName("cloudProperties");
 
 
// * * * * * * * * * * * * Private Member Functions  * * * * * * * * * * * * //
 
template<class ParticleType>
void Foam::Cloud<ParticleType>::readCloudUniformProperties()
{
    typeIOobject<timeIOdictionary> dictObj
    (
        cloudPropertiesName,
        time().name(),
        "uniform"/cloud::prefix/name(),
        db(),
        IOobject::MUST_READ_IF_MODIFIED,
        IOobject::NO_WRITE,
        false
    );
 
    if (dictObj.headerOk())
    {
        const timeIOdictionary uniformPropsDict(dictObj);
 
        const word procName("processor" + Foam::name(Pstream::myProcNo()));
        if (uniformPropsDict.found(procName))
        {
            uniformPropsDict.subDict(procName).lookup("particleCount")
                >> ParticleType::particleCount_;
        }
    }
    else
    {
        ParticleType::particleCount_ = 0;
    }
}
 
 
template<class ParticleType>
void Foam::Cloud<ParticleType>::writeCloudUniformProperties() const
{
    timeIOdictionary uniformPropsDict
    (
        IOobject
        (
            cloudPropertiesName,
            time().name(),
            "uniform"/cloud::prefix/name(),
            db(),
            IOobject::NO_READ,
            IOobject::NO_WRITE,
            false
        )
    );
 
    labelList np(Pstream::nProcs(), 0);
    np[Pstream::myProcNo()] = ParticleType::particleCount_;
 
    Pstream::listCombineGather(np, maxEqOp<label>());
    Pstream::listCombineScatter(np);
 
    forAll(np, i)
    {
        word procName("processor" + Foam::name(i));
        uniformPropsDict.add(procName, dictionary());
        uniformPropsDict.subDict(procName).add("particleCount", np[i]);
    }
 
    uniformPropsDict.writeObject
    (
        IOstream::ASCII,
        IOstream::currentVersion,
        time().writeCompression(),
        true
    );
}
 
 
template<class ParticleType>
void Foam::Cloud<ParticleType>::initCloud(const bool checkClass)
{
    readCloudUniformProperties();
 
    IOPosition<Cloud<ParticleType>> ioP(*this);
 
    bool valid = ioP.headerOk();
    Istream& is = ioP.readStream(checkClass ? typeName : "", valid);
    if (valid)
    {
        ioP.readData(is, *this);
        ioP.close();
    }
 
    if (!valid && debug)
    {
        Pout<< "Cannot read particle positions file:" << nl
            << "    " << ioP.objectPath() << nl
            << "Assuming the initial cloud contains 0 particles." << endl;
    }
 
    // Ask for the tetBasePtIs to trigger all processors to build
    // them, otherwise, if some processors have no particles then
    // there is a comms mismatch.
    pMesh_.tetBasePtIs();
}
 
 
// * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //
 
template<class ParticleType>
Foam::Cloud<ParticleType>::Cloud
(
    const polyMesh& pMesh,
    const word& cloudName,
    const bool checkClass
)
:
    cloud(pMesh, cloudName),
    pMesh_(pMesh),
    patchNbrProc_(patchNbrProc(pMesh)),
    patchNbrProcPatch_(patchNbrProcPatch(pMesh)),
    patchNonConformalCyclicPatches_(patchNonConformalCyclicPatches(pMesh)),
    globalPositionsPtr_()
{
    pMesh_.tetBasePtIs();
    pMesh_.oldCellCentres();
 
    initCloud(checkClass);
}
 
 
// * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //
 
template<class ParticleType>
Foam::IOobject Foam::Cloud<ParticleType>::fieldIOobject
(
    const word& fieldName,
    const IOobject::readOption r
) const
{
    return IOobject
    (
        fieldName,
        time().name(),
        *this,
        r,
        IOobject::NO_WRITE,
        false
    );
}
 
 
template<class ParticleType>
template<class DataType>
void Foam::Cloud<ParticleType>::checkFieldIOobject
(
    const Cloud<ParticleType>& c,
    const IOField<DataType>& data
) const
{
    if (data.size() != c.size())
    {
        FatalErrorInFunction
            << "Size of " << data.name()
            << " field " << data.size()
            << " does not match the number of particles " << c.size()
            << abort(FatalError);
    }
}
 
 
template<class ParticleType>
template<class DataType>
void Foam::Cloud<ParticleType>::checkFieldFieldIOobject
(
    const Cloud<ParticleType>& c,
    const CompactIOField<Field<DataType>>& data
) const
{
    if (data.size() != c.size())
    {
        FatalErrorInFunction
            << "Size of " << data.name()
            << " field " << data.size()
            << " does not match the number of particles " << c.size()
            << abort(FatalError);
    }
}
 
 
template<class ParticleType>
void Foam::Cloud<ParticleType>::writeFields() const
{
    ParticleType::writeFields(*this);
}
 
 
template<class ParticleType>
bool Foam::Cloud<ParticleType>::writeObject
(
    IOstream::streamFormat fmt,
    IOstream::versionNumber ver,
    IOstream::compressionType cmp,
    const bool
) const
{
    writeCloudUniformProperties();
 
    writeFields();
    return cloud::writeObject(fmt, ver, cmp, this->size());
}
 
 
// * * * * * * * * * * * * * * * Ostream Operators * * * * * * * * * * * * * //
 
template<class ParticleType>
Foam::Ostream& Foam::operator<<(Ostream& os, const Cloud<ParticleType>& pc)
{
    pc.writeData(os);
 
    // Check state of Ostream
    os.check("Ostream& operator<<(Ostream&, const Cloud<ParticleType>&)");
 
    return os;
}
 
 
// ************************************************************************* //