processcomm.C

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/*
 *
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 *
 *
 *             OOFEM : Object Oriented Finite Element Code
 *
 *               Copyright (C) 1993 - 2025   Borek Patzak
 *
 *
 *
 *       Czech Technical University, Faculty of Civil Engineering,
 *   Department of Structural Mechanics, 166 29 Prague, Czech Republic
 *
 *  This library is free software; you can redistribute it and/or
 *  modify it under the terms of the GNU Lesser General Public
 *  License as published by the Free Software Foundation; either
 *  version 2.1 of the License, or (at your option) any later version.
 *
 *  This program 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
 *  Lesser General Public License for more details.
 *
 *  You should have received a copy of the GNU Lesser General Public
 *  License along with this library; if not, write to the Free Software
 *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 */
 
#include "processcomm.h"
#include "intarray.h"
#include "combuff.h"
#include "dyncombuff.h"
 
#ifdef __USE_MPI
 #include <mpi.h>
#endif
 
namespace oofem {
ProcessCommunicatorBuff :: ProcessCommunicatorBuff(CommBuffType t)
{
    if ( t == CBT_static ) {
        send_buff = std::make_unique<StaticCommunicationBuffer>(MPI_COMM_WORLD);
        recv_buff = std::make_unique<StaticCommunicationBuffer>(MPI_COMM_WORLD);
    } else {
        send_buff = std::make_unique<DynamicCommunicationBuffer>(MPI_COMM_WORLD);
        recv_buff = std::make_unique<DynamicCommunicationBuffer>(MPI_COMM_WORLD);
    }
}
 
 
ProcessCommunicator :: ProcessCommunicator(ProcessCommunicatorBuff *b, int rank, CommunicatorMode m) :
    rank(rank),
    pcBuffer(b),
    toSend(), toReceive(),
    mode(m)
{
}
 
 
int
ProcessCommunicator :: initSend(int tag)
{
    int result = 1;
    if ( !toSend.isEmpty() || ( this->mode == CommMode_Dynamic ) ) {
        //  fprintf (stderr, "\nNlDEIDynamicDomainComunicator :: initExchange: sending to %d",rank);
        result = giveProcessCommunicatorBuff()->initSend(this->rank, tag);
    } else {
        giveProcessCommunicatorBuff()->initSendBuff();
    }
 
    return result;
}
 
 
int
ProcessCommunicator :: initReceive(int tag)
{
    int result = 1;
    if ( !toReceive.isEmpty() || ( this->mode == CommMode_Dynamic ) ) {
        //  fprintf (stderr, "\nNlDEIDynamicDomainComunicator :: initExchange: recv from %d",rank);
        result &= giveProcessCommunicatorBuff()->initReceive(this->rank, tag);
    } else {
        giveProcessCommunicatorBuff()->initRecvBuff();
    }
 
    return result;
}
 
 
int
ProcessCommunicator :: initExchange(int tag)
{
    int result = 1;
    result &= initSend(tag);
    result &= initReceive(tag);
 
    return result;
}
 
int
ProcessCommunicator :: finishExchange()
{
    return waitCompletion();
}
 
void
ProcessCommunicator :: clearBuffers()
{
    giveProcessCommunicatorBuff()->init();
}
 
int
ProcessCommunicator :: sendCompleted()
{
    if ( !toSend.isEmpty() || ( this->mode == CommMode_Dynamic ) ) {
        return giveProcessCommunicatorBuff()->sendCompleted();
    } else {
        return 1;
    }
}
 
int
ProcessCommunicator :: receiveCompleted()
{
    if ( !toReceive.isEmpty() || ( this->mode == CommMode_Dynamic ) ) {
        return giveProcessCommunicatorBuff()->receiveCompleted();
    } else {
        return 1;
    }
}
 
int
ProcessCommunicator :: testCompletion()
{
    return ( sendCompleted() && receiveCompleted() );
}
 
int
ProcessCommunicator :: waitCompletion()
{
    while ( !testCompletion() ) {
        ;
    }
 
    return 1;
}
} // end namespace oofem