PstreamGlobals.H

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    Copyright (C) 2013-2015 OpenFOAM Foundation
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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
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    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/>.
 
Namespace
    Foam::PstreamGlobals
 
Description
    Global functions and variables for working with parallel streams,
    but principally for mpi
 
SourceFiles
    PstreamGlobals.C
 
\*---------------------------------------------------------------------------*/
 
#ifndef PstreamGlobals_H
#define PstreamGlobals_H
 
#include "DynamicList.H"
#include <mpi.h>
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace Foam
{
namespace PstreamGlobals
{
 
//- Outstanding non-blocking operations.
extern DynamicList<MPI_Request> outstandingRequests_;
extern DynamicList<label> freedRequests_;
 
//- Max outstanding message tag operations.
extern int nTags_;
 
//- Free'd message tags
extern DynamicList<int> freedTags_;
 
// Current communicators. First element will be MPI_COMM_WORLD
extern DynamicList<MPI_Comm> MPICommunicators_;
extern DynamicList<MPI_Group> MPIGroups_;
 
 
void checkCommunicator(const label comm, const label toProcNo);
 
};
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace Foam
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#endif
 
// ************************************************************************* //