1 /*---------------------------------------------------------------------------*\
3 \\ / F ield | OpenFOAM: The Open Source CFD Toolbox
5 \\ / A nd | Copyright (C) 1991-2009 OpenCFD Ltd.
7 -------------------------------------------------------------------------------
9 This file is part of OpenFOAM.
11 OpenFOAM is free software; you can redistribute it and/or modify it
12 under the terms of the GNU General Public License as published by the
13 Free Software Foundation; either version 2 of the License, or (at your
14 option) any later version.
16 OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
17 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
18 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
21 You should have received a copy of the GNU General Public License
22 along with OpenFOAM; if not, write to the Free Software Foundation,
23 Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
29 Calculates points shared by more than two processor patches or cyclic
32 Is used in globalMeshData. (this info is needed for point-edge
33 communication where you do all but these shared points with patch to
34 patch communication but need to do a reduce on these shared points)
36 Works purely topological and using local communication only.
38 - domain to be one single domain (i.e. all faces can be reached through
40 - patch face ordering to be ok
41 - f[0] ordering on patch faces to be ok.
43 Works by constructing equivalence lists for all the points on processor
44 patches. These list are procPointList and give processor and meshPoint
45 label on that processor.
48 ((7 93)(4 731)(3 114))
51 means point 93 on proc7 is connected to point 731 on proc4 and 114 on proc3.
52 It then gets the lowest numbered processor (the 'master') to request a
53 sharedPoint label from processor0 and it redistributes this label back to
54 the other processors in the equivalence list.
57 - get meshPoints of all my points on processor patches and initialize
58 equivalence lists to this.
60 - send to all neighbours in relative form:
63 - receive and convert into meshPoints. Add to to my equivalence lists.
64 - mark meshPoints for which information changed.
65 - send data for these meshPoints again
66 endloop until nothing changes
68 At this point one will have complete point-point connectivity for all
69 points on processor patches. Now
71 - remove point equivalences of size 2. These are just normal points
72 shared between two neighbouring procPatches.
73 - collect on each processor points for which it is the master
74 - request number of sharedPointLabels from the Pstream::master.
76 This information gets redistributed to all processors in a similar way
77 as that in which the equivalence lists were collected:
79 - initialize the indices of shared points I am the master for
81 - send my known sharedPoints + meshPoints to all neighbours
82 - receive from all neighbour. Find which meshPoint on my processor
83 the sharedpoint is connected to
84 - mark indices for which information has changed
85 endloop until nothing changes.
91 \*---------------------------------------------------------------------------*/
93 #ifndef globalPoints_H
94 #define globalPoints_H
96 #include "DynamicList.H"
98 #include "labelList.H"
99 #include "FixedList.H"
100 #include "primitivePatch.H"
101 #include "className.H"
102 #include "edgeList.H"
104 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
109 // Forward declaration of classes
111 class polyBoundaryMesh;
112 class cyclicPolyPatch;
114 /*---------------------------------------------------------------------------*\
115 Class globalPoints Declaration
116 \*---------------------------------------------------------------------------*/
122 //- Define procPointList as holding a list of meshPoint/processor labels
123 typedef FixedList<label, 2> procPoint;
124 typedef List<procPoint> procPointList;
129 const polyMesh& mesh_;
131 //- Sum of points on processor patches (unfiltered, point on 2 patches
133 const label nPatchPoints_;
135 //- All points on boundaries and their corresponding connected points
136 // on other processors.
137 DynamicList<procPointList> procPoints_;
139 //- Map from mesh point to index in procPoints
140 Map<label> meshToProcPoint_;
142 //- Shared points used by this processor (= global point number)
143 labelList sharedPointAddr_;
145 //- My meshpoints corresponding to the shared points
146 labelList sharedPointLabels_;
148 //- Total number of shared points.
149 label nGlobalPoints_;
152 // Private Member Functions
154 //- Count all points on processorPatches. Is all points for which
155 // information is collected.
156 static label countPatchPoints(const polyBoundaryMesh&);
158 //- Add information about patchPointI in relative indices to send
159 // buffers (patchFaces, indexInFace etc.)
160 static void addToSend
162 const primitivePatch&,
163 const label patchPointI,
164 const procPointList&,
165 DynamicList<label>& patchFaces,
166 DynamicList<label>& indexInFace,
167 DynamicList<procPointList>& allInfo
170 //- Merge info from neighbour into my data
171 static bool mergeInfo
173 const procPointList& nbrInfo,
174 procPointList& myInfo
177 //- Store (and merge) info for meshPointI
178 bool storeInfo(const procPointList& nbrInfo, const label meshPointI);
180 //- Initialize procPoints_ to my patch points. allPoints = true:
181 // seed with all patch points, = false: only boundaryPoints().
182 void initOwnPoints(const bool allPoints, labelHashSet& changedPoints);
184 //- Send subset of procPoints to neighbours
185 void sendPatchPoints(const labelHashSet& changedPoints) const;
187 //- Receive neighbour points and merge into my procPoints.
188 void receivePatchPoints(labelHashSet& changedPoints);
190 //- Remove entries of size 2 where meshPoint is in provided Map.
191 // Used to remove normal face-face connected points.
192 void remove(const Map<label>&);
194 //- Get indices of point for which I am master (lowest numbered proc)
195 labelList getMasterPoints() const;
197 //- Send subset of shared points to neighbours
198 void sendSharedPoints(const labelList& changedIndices) const;
200 //- Receive shared points and update subset.
201 void receiveSharedPoints(labelList& changedIndices);
204 //- Should move into cyclicPolyPatch but some ordering problem
205 // keeps on giving problems.
206 static edgeList coupledPoints(const cyclicPolyPatch&);
208 //- Disallow default bitwise copy construct
209 globalPoints(const globalPoints&);
211 //- Disallow default bitwise assignment
212 void operator=(const globalPoints&);
217 //- Declare name of the class and its debug switch
218 ClassName("globalPoints");
223 //- Construct from mesh
224 globalPoints(const polyMesh& mesh);
231 label nPatchPoints() const
233 return nPatchPoints_;
236 const Map<label>& meshToProcPoint() const
238 return meshToProcPoint_;
241 //- shared points used by this processor (= global point number)
242 const labelList& sharedPointAddr() const
244 return sharedPointAddr_;
247 //- my meshpoints corresponding to the shared points
248 const labelList& sharedPointLabels() const
250 return sharedPointLabels_;
253 label nGlobalPoints() const
255 return nGlobalPoints_;
261 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
263 } // End namespace Foam
265 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
269 // ************************************************************************* //