UOPwrite.C

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/*---------------------------------------------------------------------------*\
  =========                 |
  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
   \\    /   O peration     |
    \\  /    A nd           | www.openfoam.com
     \\/     M anipulation  |
-------------------------------------------------------------------------------
    Copyright (C) 2011-2017 OpenFOAM Foundation
    Copyright (C) 2019-2021 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/>.
 
Description
    Write primitive and binary block from OPstream
 
\*---------------------------------------------------------------------------*/
 
#include "UOPstream.H"
#include "PstreamGlobals.H"
#include "profilingPstream.H"
 
#include <mpi.h>
 
// * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //
 
bool Foam::UOPstream::write
(
    const commsTypes commsType,
    const int toProcNo,
    const char* buf,
    const std::streamsize bufSize,
    const int tag,
    const label communicator
)
{
    if (debug)
    {
        Pout<< "UOPstream::write : starting write to:" << toProcNo
            << " tag:" << tag
            << " comm:" << communicator << " size:" << label(bufSize)
            << " commsType:" << UPstream::commsTypeNames[commsType]
            << Foam::endl;
    }
    if (UPstream::warnComm != -1 && communicator != UPstream::warnComm)
    {
        Pout<< "UOPstream::write : starting write to:" << toProcNo
            << " tag:" << tag
            << " comm:" << communicator << " size:" << label(bufSize)
            << " commsType:" << UPstream::commsTypeNames[commsType]
            << " warnComm:" << UPstream::warnComm
            << Foam::endl;
        error::printStack(Pout);
    }
 
 
    PstreamGlobals::checkCommunicator(communicator, toProcNo);
 
 
    bool transferFailed = true;
 
    profilingPstream::beginTiming();
 
    if (commsType == commsTypes::blocking)
    {
        transferFailed = MPI_Bsend
        (
            const_cast<char*>(buf),
            bufSize,
            MPI_BYTE,
            toProcNo,
            tag,
            PstreamGlobals::MPICommunicators_[communicator]
        );
 
        // Assume these are from scatters ...
        profilingPstream::addScatterTime();
 
        if (debug)
        {
            Pout<< "UOPstream::write : finished write to:" << toProcNo
                << " tag:" << tag << " size:" << label(bufSize)
                << " commsType:" << UPstream::commsTypeNames[commsType]
                << Foam::endl;
        }
    }
    else if (commsType == commsTypes::scheduled)
    {
        transferFailed = MPI_Send
        (
            const_cast<char*>(buf),
            bufSize,
            MPI_BYTE,
            toProcNo,
            tag,
            PstreamGlobals::MPICommunicators_[communicator]
        );
 
        // Assume these are from scatters ...
        profilingPstream::addScatterTime();
 
        if (debug)
        {
            Pout<< "UOPstream::write : finished write to:" << toProcNo
                << " tag:" << tag << " size:" << label(bufSize)
                << " commsType:" << UPstream::commsTypeNames[commsType]
                << Foam::endl;
        }
    }
    else if (commsType == commsTypes::nonBlocking)
    {
        MPI_Request request;
 
        transferFailed = MPI_Isend
        (
            const_cast<char*>(buf),
            bufSize,
            MPI_BYTE,
            toProcNo,
            tag,
            PstreamGlobals::MPICommunicators_[communicator],
            &request
        );
 
        profilingPstream::addWaitTime();
 
        if (debug)
        {
            Pout<< "UOPstream::write : started write to:" << toProcNo
                << " tag:" << tag << " size:" << label(bufSize)
                << " commsType:" << UPstream::commsTypeNames[commsType]
                << " request:" << PstreamGlobals::outstandingRequests_.size()
                << Foam::endl;
        }
 
        PstreamGlobals::outstandingRequests_.append(request);
    }
    else
    {
        FatalErrorInFunction
            << "Unsupported communications type "
            << UPstream::commsTypeNames[commsType]
            << Foam::abort(FatalError);
    }
 
    return !transferFailed;
}
 
 
// ************************************************************************* //