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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 2 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, write to the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
Various utility functions to work on Lists of Lists (usually resulting from 'gather'ing and combining information from individual processors) combine: takes (elements of) sublists and appends them into one big list. combineOffset: similar and also adds offset. The access of data is through an AccessOp so that data can be 'gather'ed in one go, minimizing communication, and then picked apart and recombined. Example: // Assuming myContainer defined which holds all the data I want to // transfer (say a pointField and a faceList). myContainer also defines // access operators to // access the individual elements, say myContainerPoints::operator(), // and myContainerFaces::operator() List<myContainer> gatheredData(Pstream::nProcs()); gatheredData[Pstream::myProcNo()] = myContainer(points, faces); // Gather data onto master Pstream::gatherList(gatheredData); // Combine pointField combinedPoints ( ListListOps::combine<pointField> ( gatheredData, myContainerPoints() ) ); // Combine and renumber (so combinedFaces indexes combinedPoints) // Extract sizes of individual lists labelList sizes ( ListListOps::subSizes(gatheredData, myContainerPoints()) ); // Renumber using user-defined operator offsetOp<face>() faceList combinedFaces ( ListListOps::combineOffset<faceList> ( gatheredData, sizes, myContainerFaces(), offsetOp<face>() ) );
Definition in file ListListOps.H.
Go to the source code of this file.
Namespaces | |
namespace | Foam |
namespace | Foam::ListListOps |
Classes | |
class | accessOp |
class | offsetOp |
Functions | |
template<class AccessType, class T, class AccessOp> | |
AccessType | combine (const List< T > &, AccessOp aop=accessOp< T >()) |
Combines sublists into one big list. | |
template<class T, class AccessOp> | |
labelList | subSizes (const List< T > &, AccessOp aop=accessOp< T >()) |
Gets sizes of sublists. | |
template<class AccessType, class T, class AccessOp, class OffsetOp> | |
AccessType | combineOffset (const List< T > &, const labelList &sizes, AccessOp aop, OffsetOp oop=offsetOp< T >()) |
Like combine but also offsets sublists based on passed sizes. |
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Combines sublists into one big list.
Referenced by offsetOp::operator()(). |
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Like combine but also offsets sublists based on passed sizes.
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Gets sizes of sublists.
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