zoneDistributeI.H

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/*---------------------------------------------------------------------------*\
  =========                 |
  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
   \\    /   O peration     |
    \\  /    A nd           | www.openfoam.com
     \\/     M anipulation  |
-------------------------------------------------------------------------------
    Copyright (C) 2019-2020 DLR
    Copyright (C) 2020-2022 OpenCFD Ltd.
-------------------------------------------------------------------------------
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 "DynamicField.H"
 
// * * * * * * * * * * * * * Private Member Functions  * * * * * * * * * * * //
 
template<typename Type>
Type Foam::zoneDistribute::getLocalValue
(
    const VolumeField<Type>& phi,
    const label localIdx
) const
{
    if (localIdx < mesh_.nCells()) // internal: cellI
    {
        return phi[localIdx];
    }
 
    return faceValue(phi,localIdx);
}
 
 
template<typename Type>
Type Foam::zoneDistribute::faceValue
(
    const VolumeField<Type>& phi,
    const label localIdx
) const
{
    const label faceI = localIdx + mesh_.nInternalFaces() - mesh_.nCells();
 
    const polyBoundaryMesh& pbm = mesh_.boundaryMesh();
 
    // Boundary face. Find out which face of which patch
    const label patchI = pbm.whichPatch(faceI);
 
    if (patchI < 0 || patchI >= pbm.size())
    {
       FatalErrorInFunction
            << "Cannot find patch for face " << faceI
            << abort(FatalError);
    }
 
    const polyPatch& pp = pbm[patchI];
 
    const label patchFaceI = pp.whichFace(faceI);
 
    return phi.boundaryField()[patchI][patchFaceI];
}
 
 
template<typename Type>
Type Foam::zoneDistribute::getValue
(
    const VolumeField<Type>& phi,
    const Map<Type>& valuesFromOtherProc,
    const label gblIdx
) const
{
    if (globalNumbering_.isLocal(gblIdx))
    {
        const label localIdx = globalNumbering_.toLocal(gblIdx);
        return getLocalValue(phi,localIdx);
    }
    else
    {
        // From other proc
        return valuesFromOtherProc[gblIdx];
    }
}
 
 
template<typename Type>
Foam::Map<Foam::Field<Type>> Foam::zoneDistribute::getFields
(
    const boolList& zone,
    const VolumeField<Type>& phi
)
{
    if (zone.size() != phi.size())
    {
        FatalErrorInFunction
            << "size of zone: " << zone.size()
            << "size of phi:" <<  phi.size()
            << "do not match. Did the mesh change?"
            << exit(FatalError);
    }
 
 
    // Get values from other proc
    Map<Type> neiValues = getDatafromOtherProc(zone, phi);
 
    Map<Field<Type>> stencilWithValues;
 
    DynamicField<Type> tmpField(128);
 
    forAll(zone, celli)
    {
        if (zone[celli])
        {
            tmpField.clear();
 
            for (const label gblIdx : stencil_[celli])
            {
                tmpField.append(getValue(phi,neiValues,gblIdx));
            }
 
            stencilWithValues.emplace(celli, tmpField);
        }
    }
 
    return stencilWithValues;
}
 
 
template<typename Type>
Foam::Map<Type> Foam::zoneDistribute::getDatafromOtherProc
(
    const boolList& zone,
    const VolumeField<Type>& phi
)
{
    if (zone.size() != phi.size())
    {
        FatalErrorInFunction
            << "size of zone: " << zone.size()
            << "size of phi:" <<  phi.size()
            << "do not match. Did the mesh change?"
            << exit(FatalError);
    }
 
 
    // Get values from other proc
    Map<Type> neiValues;
 
    if (UPstream::parRun())
    {
        if (sendConnections_.empty())
        {
            WarningInFunction
                << "The send/recv connections not initialized - "
                << "likely that setUpCommforZone() was not called"
                << endl;
            // But don't exit/abort for now
        }
 
        // Stream the send data into PstreamBuffers,
        // which we also use to track the current topology.
 
        PstreamBuffers pBufs(UPstream::commsTypes::nonBlocking);
 
        for (const int proci : UPstream::allProcs())
        {
            if (proci != UPstream::myProcNo() && !send_[proci].empty())
            {
                // Serialize as Map
                Map<Type> sendValues(2*send_[proci].size());
 
                for (const label sendIdx : send_[proci])
                {
                    sendValues.insert
                    (
                        sendIdx,
                        getLocalValue(phi, globalNumbering_.toLocal(sendIdx))
                    );
                }
 
                UOPstream toProc(proci, pBufs);
                toProc << sendValues;
            }
        }
 
        pBufs.finishedSends(sendConnections_, sendProcs_, recvProcs_);
 
        for (const int proci : pBufs.allProcs())
        {
            if (proci != UPstream::myProcNo() && pBufs.recvDataCount(proci))
            {
                UIPstream fromProc(proci, pBufs);
                Map<Type> tmpValues(fromProc);
 
                neiValues += tmpValues;
            }
        }
    }
 
    return neiValues;
}
 
 
// ************************************************************************* //