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/*---------------------------------------------------------------------------*\
========= |
\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
\\ / O peration |
\\ / A nd | Copyright (C) 2011-2013 OpenFOAM Foundation
\\/ M anipulation |
-------------------------------------------------------------------------------
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
\*---------------------------------------------------------------------------*/
#include "Gather.H"
#include "IPstream.H"
#include "OPstream.H"
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
namespace Foam
{
// * * * * * * * * * * * * * * * * Constructors * * * * * * * * * * * * * * //
// Construct from component
template<class T0>
Gather<T0>::Gather(const T0& localData, const bool redistribute)
:
List<T0>(0),
nProcs_(max(1, Pstream::nProcs()))
{
this->setSize(nProcs_);
//
// Collect sizes on all processor
//
if (Pstream::parRun())
{
if (Pstream::master())
{
this->operator[](0) = localData;
// Receive data
for
(
int slave = Pstream::firstSlave(), procIndex = 1;
slave <= Pstream::lastSlave();
slave++, procIndex++
)
{
IPstream fromSlave(Pstream::scheduled, slave);
fromSlave >> this->operator[](procIndex);
}
// Send data
for
(
int slave = Pstream::firstSlave(), procIndex = 1;
slave <= Pstream::lastSlave();
slave++, procIndex++
)
{
OPstream toSlave(Pstream::scheduled, slave);
if (redistribute)
{
toSlave << *this;
}
else
{
// Dummy send just to balance sends/receives
toSlave << 0;
}
}
}
else
{
// Slave: send my local data to master
{
OPstream toMaster(Pstream::scheduled, Pstream::masterNo());
toMaster << localData;
}
// Receive data from master
{
IPstream fromMaster(Pstream::scheduled, Pstream::masterNo());
if (redistribute)
{
fromMaster >> *this;
}
else
{
label dummy;
fromMaster >> dummy;
}
}
}
}
else
{
this->operator[](0) = localData;
}
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
} // End namespace Foam
// ************************************************************************* //
|
