Actual source code: dmimpl.h



  3: #if !defined(_DMIMPL_H)
  4: #define _DMIMPL_H

  6: #include <petscdm.h>
  7: #include <petsc/private/petscimpl.h>
  8: #include <petsc/private/petscdsimpl.h>
  9: #include <petsc/private/sectionimpl.h>

 11: PETSC_EXTERN PetscBool DMRegisterAllCalled;
 12: PETSC_EXTERN PetscErrorCode DMRegisterAll(void);
 13: typedef PetscErrorCode (*NullSpaceFunc)(DM dm, PetscInt origField, PetscInt field, MatNullSpace *nullSpace);

 15: typedef struct _DMOps *DMOps;
 16: struct _DMOps {
 17:   PetscErrorCode (*view)(DM,PetscViewer);
 18:   PetscErrorCode (*load)(DM,PetscViewer);
 19:   PetscErrorCode (*clone)(DM,DM*);
 20:   PetscErrorCode (*setfromoptions)(PetscOptionItems*,DM);
 21:   PetscErrorCode (*setup)(DM);
 22:   PetscErrorCode (*createlocalsection)(DM);
 23:   PetscErrorCode (*createdefaultconstraints)(DM);
 24:   PetscErrorCode (*createglobalvector)(DM,Vec*);
 25:   PetscErrorCode (*createlocalvector)(DM,Vec*);
 26:   PetscErrorCode (*getlocaltoglobalmapping)(DM);
 27:   PetscErrorCode (*createfieldis)(DM,PetscInt*,char***,IS**);
 28:   PetscErrorCode (*createcoordinatedm)(DM,DM*);
 29:   PetscErrorCode (*createcoordinatefield)(DM,DMField*);

 31:   PetscErrorCode (*getcoloring)(DM,ISColoringType,ISColoring*);
 32:   PetscErrorCode (*creatematrix)(DM, Mat*);
 33:   PetscErrorCode (*createinterpolation)(DM,DM,Mat*,Vec*);
 34:   PetscErrorCode (*createrestriction)(DM,DM,Mat*);
 35:   PetscErrorCode (*createmassmatrix)(DM,DM,Mat*);
 36:   PetscErrorCode (*hascreateinjection)(DM,PetscBool*);
 37:   PetscErrorCode (*createinjection)(DM,DM,Mat*);

 39:   PetscErrorCode (*refine)(DM,MPI_Comm,DM*);
 40:   PetscErrorCode (*coarsen)(DM,MPI_Comm,DM*);
 41:   PetscErrorCode (*refinehierarchy)(DM,PetscInt,DM*);
 42:   PetscErrorCode (*coarsenhierarchy)(DM,PetscInt,DM*);
 43:   PetscErrorCode (*adaptlabel)(DM,DMLabel,DM*);
 44:   PetscErrorCode (*adaptmetric)(DM,Vec,DMLabel,DM*);

 46:   PetscErrorCode (*globaltolocalbegin)(DM,Vec,InsertMode,Vec);
 47:   PetscErrorCode (*globaltolocalend)(DM,Vec,InsertMode,Vec);
 48:   PetscErrorCode (*localtoglobalbegin)(DM,Vec,InsertMode,Vec);
 49:   PetscErrorCode (*localtoglobalend)(DM,Vec,InsertMode,Vec);
 50:   PetscErrorCode (*localtolocalbegin)(DM,Vec,InsertMode,Vec);
 51:   PetscErrorCode (*localtolocalend)(DM,Vec,InsertMode,Vec);

 53:   PetscErrorCode (*destroy)(DM);

 55:   PetscErrorCode (*computevariablebounds)(DM,Vec,Vec);

 57:   PetscErrorCode (*createsubdm)(DM,PetscInt,const PetscInt*,IS*,DM*);
 58:   PetscErrorCode (*createsuperdm)(DM*,PetscInt,IS**,DM*);
 59:   PetscErrorCode (*createfielddecomposition)(DM,PetscInt*,char***,IS**,DM**);
 60:   PetscErrorCode (*createdomaindecomposition)(DM,PetscInt*,char***,IS**,IS**,DM**);
 61:   PetscErrorCode (*createddscatters)(DM,PetscInt,DM*,VecScatter**,VecScatter**,VecScatter**);

 63:   PetscErrorCode (*getdimpoints)(DM,PetscInt,PetscInt*,PetscInt*);
 64:   PetscErrorCode (*locatepoints)(DM,Vec,DMPointLocationType,PetscSF);
 65:   PetscErrorCode (*getneighbors)(DM,PetscInt*,const PetscMPIInt**);
 66:   PetscErrorCode (*getboundingbox)(DM,PetscReal*,PetscReal*);
 67:   PetscErrorCode (*getlocalboundingbox)(DM,PetscReal*,PetscReal*);
 68:   PetscErrorCode (*locatepointssubdomain)(DM,Vec,PetscMPIInt**);

 70:   PetscErrorCode (*projectfunctionlocal)(DM,PetscReal,PetscErrorCode(**)(PetscInt,PetscReal,const PetscReal[],PetscInt,PetscScalar *,void *),void **,InsertMode,Vec);
 71:   PetscErrorCode (*projectfunctionlabellocal)(DM,PetscReal,DMLabel,PetscInt,const PetscInt[],PetscInt,const PetscInt[],PetscErrorCode(**)(PetscInt,PetscReal,const PetscReal[],PetscInt,PetscScalar *,void *),void **,InsertMode,Vec);
 72:   PetscErrorCode (*projectfieldlocal)(DM,PetscReal,Vec,void(**)(PetscInt,PetscInt,PetscInt,const PetscInt[],const PetscInt[],const PetscScalar[],const PetscScalar[],const PetscScalar[],const PetscInt[],const PetscInt[],const PetscScalar[],const PetscScalar[],const PetscScalar[],PetscReal,const PetscReal[],PetscInt,const PetscScalar[],PetscScalar[]),InsertMode,Vec);
 73:   PetscErrorCode (*projectfieldlabellocal)(DM,PetscReal,DMLabel,PetscInt,const PetscInt[],PetscInt,const PetscInt[],Vec,void(**)(PetscInt,PetscInt,PetscInt,const PetscInt[],const PetscInt[],const PetscScalar[],const PetscScalar[],const PetscScalar[],const PetscInt[],const PetscInt[],const PetscScalar[],const PetscScalar[],const PetscScalar[],PetscReal,const PetscReal[],PetscInt,const PetscScalar[],PetscScalar[]),InsertMode,Vec);
 74:   PetscErrorCode (*projectbdfieldlabellocal)(DM,PetscReal,DMLabel,PetscInt,const PetscInt[],PetscInt,const PetscInt[],Vec,void(**)(PetscInt,PetscInt,PetscInt,const PetscInt[],const PetscInt[],const PetscScalar[],const PetscScalar[],const PetscScalar[],const PetscInt[],const PetscInt[],const PetscScalar[],const PetscScalar[],const PetscScalar[],PetscReal,const PetscReal[],const PetscReal[],PetscInt,const PetscScalar[],PetscScalar[]),InsertMode,Vec);
 75:   PetscErrorCode (*computel2diff)(DM,PetscReal,PetscErrorCode(**)(PetscInt, PetscReal,const PetscReal [], PetscInt, PetscScalar *, void *), void **, Vec, PetscReal *);
 76:   PetscErrorCode (*computel2gradientdiff)(DM,PetscReal,PetscErrorCode(**)(PetscInt,PetscReal,const PetscReal [],const PetscReal[],PetscInt, PetscScalar *,void *),void **,Vec,const PetscReal[],PetscReal *);
 77:   PetscErrorCode (*computel2fielddiff)(DM,PetscReal,PetscErrorCode(**)(PetscInt, PetscReal,const PetscReal [], PetscInt, PetscScalar *, void *), void **, Vec, PetscReal *);

 79:   PetscErrorCode (*getcompatibility)(DM,DM,PetscBool*,PetscBool*);
 80: };

 82: PETSC_EXTERN PetscErrorCode DMLocalizeCoordinate_Internal(DM, PetscInt, const PetscScalar[], const PetscScalar[], PetscScalar[]);
 83: PETSC_EXTERN PetscErrorCode DMLocalizeCoordinateReal_Internal(DM, PetscInt, const PetscReal[], const PetscReal[], PetscReal[]);
 84: PETSC_EXTERN PetscErrorCode DMLocalizeAddCoordinate_Internal(DM, PetscInt, const PetscScalar[], const PetscScalar[], PetscScalar[]);

 86: typedef struct _DMCoarsenHookLink *DMCoarsenHookLink;
 87: struct _DMCoarsenHookLink {
 88:   PetscErrorCode (*coarsenhook)(DM,DM,void*);              /* Run once, when coarse DM is created */
 89:   PetscErrorCode (*restricthook)(DM,Mat,Vec,Mat,DM,void*); /* Run each time a new problem is restricted to a coarse grid */
 90:   void *ctx;
 91:   DMCoarsenHookLink next;
 92: };

 94: typedef struct _DMRefineHookLink *DMRefineHookLink;
 95: struct _DMRefineHookLink {
 96:   PetscErrorCode (*refinehook)(DM,DM,void*);     /* Run once, when a fine DM is created */
 97:   PetscErrorCode (*interphook)(DM,Mat,DM,void*); /* Run each time a new problem is interpolated to a fine grid */
 98:   void *ctx;
 99:   DMRefineHookLink next;
100: };

102: typedef struct _DMSubDomainHookLink *DMSubDomainHookLink;
103: struct _DMSubDomainHookLink {
104:   PetscErrorCode (*ddhook)(DM,DM,void*);
105:   PetscErrorCode (*restricthook)(DM,VecScatter,VecScatter,DM,void*);
106:   void *ctx;
107:   DMSubDomainHookLink next;
108: };

110: typedef struct _DMGlobalToLocalHookLink *DMGlobalToLocalHookLink;
111: struct _DMGlobalToLocalHookLink {
112:   PetscErrorCode (*beginhook)(DM,Vec,InsertMode,Vec,void*);
113:   PetscErrorCode (*endhook)(DM,Vec,InsertMode,Vec,void*);
114:   void *ctx;
115:   DMGlobalToLocalHookLink next;
116: };

118: typedef struct _DMLocalToGlobalHookLink *DMLocalToGlobalHookLink;
119: struct _DMLocalToGlobalHookLink {
120:   PetscErrorCode (*beginhook)(DM,Vec,InsertMode,Vec,void*);
121:   PetscErrorCode (*endhook)(DM,Vec,InsertMode,Vec,void*);
122:   void *ctx;
123:   DMLocalToGlobalHookLink next;
124: };

126: typedef enum {DMVEC_STATUS_IN,DMVEC_STATUS_OUT} DMVecStatus;
127: typedef struct _DMNamedVecLink *DMNamedVecLink;
128: struct _DMNamedVecLink {
129:   Vec X;
130:   char *name;
131:   DMVecStatus status;
132:   DMNamedVecLink next;
133: };

135: typedef struct _DMWorkLink *DMWorkLink;
136: struct _DMWorkLink {
137:   size_t     bytes;
138:   void       *mem;
139:   DMWorkLink next;
140: };

142: #define DM_MAX_WORK_VECTORS 100 /* work vectors available to users  via DMGetGlobalVector(), DMGetLocalVector() */

144: struct _n_DMLabelLink {
145:   DMLabel              label;
146:   PetscBool            output;
147:   struct _n_DMLabelLink *next;
148: };
149: typedef struct _n_DMLabelLink *DMLabelLink;

151: typedef struct _n_Boundary *DMBoundary;

153: struct _n_Boundary {
154:   DSBoundary  dsboundary;
155:   DMLabel     label;
156:   DMBoundary  next;
157: };

159: typedef struct _n_Field {
160:   PetscObject disc;         /* Field discretization, or a PetscContainer with the field name */
161:   DMLabel     label;        /* Label defining the domain of definition of the field */
162:   PetscBool   adjacency[2]; /* Flags for defining variable influence (adjacency) for each field [use cone() or support() first, use the transitive closure] */
163:   PetscBool   avoidTensor;  /* Flag to avoid defining field over tensor cells */
164: } RegionField;

166: typedef struct _n_Space {
167:   PetscDS ds;     /* Approximation space in this domain */
168:   DMLabel label;  /* Label defining the domain of definition of the discretization */
169:   IS      fields; /* Map from DS field numbers to original field numbers in the DM */
170: } DMSpace;

172: struct _p_UniversalLabel {
173:   DMLabel    label;   /* The universal label */
174:   PetscInt   Nl;      /* Number of labels encoded */
175:   char     **names;   /* The label names */
176:   PetscInt  *indices; /* The original indices in the input DM */
177:   PetscInt   Nv;      /* Total number of values in all the labels */
178:   PetscInt  *bits;    /* Starting bit for values of each label */
179:   PetscInt  *masks;   /* Masks to pull out label value bits for each label */
180:   PetscInt  *offsets; /* Starting offset for label values for each label */
181:   PetscInt  *values;  /* Original label values before renumbering */
182: };

184: PETSC_INTERN PetscErrorCode DMDestroyLabelLinkList_Internal(DM);

186: #define MAXDMMONITORS 5

188: struct _p_DM {
189:   PETSCHEADER(struct _DMOps);
190:   Vec                     localin[DM_MAX_WORK_VECTORS],localout[DM_MAX_WORK_VECTORS];
191:   Vec                     globalin[DM_MAX_WORK_VECTORS],globalout[DM_MAX_WORK_VECTORS];
192:   DMNamedVecLink          namedglobal;
193:   DMNamedVecLink          namedlocal;
194:   DMWorkLink              workin,workout;
195:   DMLabelLink             labels;            /* Linked list of labels */
196:   DMLabel                 depthLabel;        /* Optimized access to depth label */
197:   DMLabel                 celltypeLabel;     /* Optimized access to celltype label */
198:   void                    *ctx;    /* a user context */
199:   PetscErrorCode          (*ctxdestroy)(void**);
200:   ISColoringType          coloringtype;
201:   MatFDColoring           fd;
202:   VecType                 vectype;  /* type of vector created with DMCreateLocalVector() and DMCreateGlobalVector() */
203:   MatType                 mattype;  /* type of matrix created with DMCreateMatrix() */
204:   PetscInt                bs;
205:   ISLocalToGlobalMapping  ltogmap;
206:   PetscBool               prealloc_only; /* Flag indicating the DMCreateMatrix() should only preallocate, not fill the matrix */
207:   PetscBool               structure_only; /* Flag indicating the DMCreateMatrix() create matrix structure without values */
208:   PetscInt                levelup,leveldown;  /* if the DM has been obtained by refining (or coarsening) this indicates how many times that process has been used to generate this DM */
209:   PetscBool               setupcalled;        /* Indicates that the DM has been set up, methods that modify a DM such that a fresh setup is required should reset this flag */
210:   PetscBool               setfromoptionscalled;
211:   void                    *data;
212:   /* Hierarchy / Submeshes */
213:   DM                      coarseMesh;
214:   DM                      fineMesh;
215:   DMCoarsenHookLink       coarsenhook; /* For transfering auxiliary problem data to coarser grids */
216:   DMRefineHookLink        refinehook;
217:   DMSubDomainHookLink     subdomainhook;
218:   DMGlobalToLocalHookLink gtolhook;
219:   DMLocalToGlobalHookLink ltoghook;
220:   /* Topology */
221:   PetscInt                dim;                  /* The topological dimension */
222:   /* Flexible communication */
223:   PetscSF                 sfMigration;          /* SF for point distribution created during distribution */
224:   PetscSF                 sf;                   /* SF for parallel point overlap */
225:   PetscSF                 sectionSF;            /* SF for parallel dof overlap using section */
226:   PetscSF                 sfNatural;            /* SF mapping to the "natural" ordering */
227:   PetscBool               useNatural;           /* Create the natural SF */
228:   /* Allows a non-standard data layout */
229:   PetscBool               adjacency[2];         /* [use cone() or support() first, use the transitive closure] */
230:   PetscSection            localSection;         /* Layout for local vectors */
231:   PetscSection            globalSection;        /* Layout for global vectors */
232:   PetscLayout             map;
233:   /* Constraints */
234:   PetscSection            defaultConstraintSection;
235:   Mat                     defaultConstraintMat;
236:   /* Basis transformation */
237:   DM                      transformDM;          /* Layout for basis transformation */
238:   Vec                     transform;            /* Basis transformation matrices */
239:   void                   *transformCtx;         /* Basis transformation context */
240:   PetscErrorCode        (*transformSetUp)(DM, void *);
241:   PetscErrorCode        (*transformDestroy)(DM, void *);
242:   PetscErrorCode        (*transformGetMatrix)(DM, const PetscReal[], PetscBool, const PetscScalar **, void *);
243:   /* Coordinates */
244:   PetscInt                dimEmbed;             /* The dimension of the embedding space */
245:   DM                      coordinateDM;         /* Layout for coordinates */
246:   Vec                     coordinates;          /* Coordinate values in global vector */
247:   Vec                     coordinatesLocal;     /* Coordinate values in local  vector */
248:   PetscBool               periodic;             /* Is the DM periodic? */
249:   DMField                 coordinateField;      /* Coordinates as an abstract field */
250:   PetscReal              *L, *maxCell;          /* Size of periodic box and max cell size for determining periodicity */
251:   DMBoundaryType         *bdtype;               /* Indicates type of topological boundary */
252:   /* Null spaces -- of course I should make this have a variable number of fields */
253:   NullSpaceFunc           nullspaceConstructors[10];
254:   NullSpaceFunc           nearnullspaceConstructors[10];
255:   /* Fields are represented by objects */
256:   PetscInt                Nf;                   /* Number of fields defined on the total domain */
257:   RegionField            *fields;               /* Array of discretization fields with regions of validity */
258:   DMBoundary              boundary;             /* List of boundary conditions */
259:   PetscInt                Nds;                  /* Number of discrete systems defined on the total domain */
260:   DMSpace                *probs;                /* Array of discrete systems */
261:   /* Output structures */
262:   DM                      dmBC;                 /* The DM with boundary conditions in the global DM */
263:   PetscInt                outputSequenceNum;    /* The current sequence number for output */
264:   PetscReal               outputSequenceVal;    /* The current sequence value for output */
265:   PetscErrorCode        (*monitor[MAXDMMONITORS])(DM, void *);
266:   PetscErrorCode        (*monitordestroy[MAXDMMONITORS])(void **);
267:   void                   *monitorcontext[MAXDMMONITORS];
268:   PetscInt                numbermonitors;

270:   PetscObject             dmksp,dmsnes,dmts;
271: };

273: PETSC_EXTERN PetscLogEvent DM_Convert;
274: PETSC_EXTERN PetscLogEvent DM_GlobalToLocal;
275: PETSC_EXTERN PetscLogEvent DM_LocalToGlobal;
276: PETSC_EXTERN PetscLogEvent DM_LocatePoints;
277: PETSC_EXTERN PetscLogEvent DM_Coarsen;
278: PETSC_EXTERN PetscLogEvent DM_Refine;
279: PETSC_EXTERN PetscLogEvent DM_CreateInterpolation;
280: PETSC_EXTERN PetscLogEvent DM_CreateRestriction;
281: PETSC_EXTERN PetscLogEvent DM_CreateInjection;
282: PETSC_EXTERN PetscLogEvent DM_CreateMatrix;
283: PETSC_EXTERN PetscLogEvent DM_Load;
284: PETSC_EXTERN PetscLogEvent DM_AdaptInterpolator;

286: PETSC_EXTERN PetscErrorCode DMCreateGlobalVector_Section_Private(DM,Vec*);
287: PETSC_EXTERN PetscErrorCode DMCreateLocalVector_Section_Private(DM,Vec*);

289: PETSC_EXTERN PetscErrorCode DMView_GLVis(DM,PetscViewer,PetscErrorCode(*)(DM,PetscViewer));

291: /*

293:           Composite Vectors

295:       Single global representation
296:       Individual global representations
297:       Single local representation
298:       Individual local representations

300:       Subsets of individual as a single????? Do we handle this by having DMComposite inside composite??????

302:        DM da_u, da_v, da_p

304:        DM dm_velocities

306:        DM dm

308:        DMDACreate(,&da_u);
309:        DMDACreate(,&da_v);
310:        DMCompositeCreate(,&dm_velocities);
311:        DMCompositeAddDM(dm_velocities,(DM)du);
312:        DMCompositeAddDM(dm_velocities,(DM)dv);

314:        DMDACreate(,&da_p);
315:        DMCompositeCreate(,&dm_velocities);
316:        DMCompositeAddDM(dm,(DM)dm_velocities);
317:        DMCompositeAddDM(dm,(DM)dm_p);


320:     Access parts of composite vectors (Composite only)
321:     ---------------------------------
322:       DMCompositeGetAccess  - access the global vector as subvectors and array (for redundant arrays)
323:       ADD for local vector -

325:     Element access
326:     --------------
327:       From global vectors
328:          -DAVecGetArray   - for DMDA
329:          -VecGetArray - for DMSliced
330:          ADD for DMComposite???  maybe

332:       From individual vector
333:           -DAVecGetArray - for DMDA
334:           -VecGetArray -for sliced
335:          ADD for DMComposite??? maybe

337:       From single local vector
338:           ADD         * single local vector as arrays?

340:    Communication
341:    -------------
342:       DMGlobalToLocal - global vector to single local vector

344:       DMCompositeScatter/Gather - direct to individual local vectors and arrays   CHANGE name closer to GlobalToLocal?

346:    Obtaining vectors
347:    -----------------
348:       DMCreateGlobal/Local
349:       DMGetGlobal/Local
350:       DMCompositeGetLocalVectors   - gives individual local work vectors and arrays


353: ?????   individual global vectors   ????

355: */

357: #if defined(PETSC_HAVE_HDF5)
358: PETSC_EXTERN PetscErrorCode DMSequenceLoad_HDF5_Internal(DM, const char *, PetscInt, PetscScalar *, PetscViewer);
359: #endif

361: PETSC_STATIC_INLINE PetscErrorCode DMGetLocalOffset_Private(DM dm, PetscInt point, PetscInt *start, PetscInt *end)
362: {
364: #if defined(PETSC_USE_DEBUG)
365:   {
366:     PetscInt       dof;
368:     *start = *end = 0; /* Silence overzealous compiler warning */
369:     if (!dm->localSection) SETERRQ(PetscObjectComm((PetscObject) dm), PETSC_ERR_ARG_WRONG, "DM must have a local section, see DMSetLocalSection()");
370:     PetscSectionGetOffset(dm->localSection, point, start);
371:     PetscSectionGetDof(dm->localSection, point, &dof);
372:     *end = *start + dof;
373:   }
374: #else
375:   {
376:     const PetscSection s = dm->localSection;
377:     *start = s->atlasOff[point - s->pStart];
378:     *end   = *start + s->atlasDof[point - s->pStart];
379:   }
380: #endif
381:   return(0);
382: }

384: PETSC_STATIC_INLINE PetscErrorCode DMGetLocalFieldOffset_Private(DM dm, PetscInt point, PetscInt field, PetscInt *start, PetscInt *end)
385: {
387: #if defined(PETSC_USE_DEBUG)
388:   {
389:     PetscInt       dof;
391:     *start = *end = 0; /* Silence overzealous compiler warning */
392:     if (!dm->localSection) SETERRQ(PetscObjectComm((PetscObject) dm), PETSC_ERR_ARG_WRONG, "DM must have a local section, see DMSetLocalSection()");
393:     PetscSectionGetFieldOffset(dm->localSection, point, field, start);
394:     PetscSectionGetFieldDof(dm->localSection, point, field, &dof);
395:     *end = *start + dof;
396:   }
397: #else
398:   {
399:     const PetscSection s = dm->localSection->field[field];
400:     *start = s->atlasOff[point - s->pStart];
401:     *end   = *start + s->atlasDof[point - s->pStart];
402:   }
403: #endif
404:   return(0);
405: }

407: PETSC_STATIC_INLINE PetscErrorCode DMGetGlobalOffset_Private(DM dm, PetscInt point, PetscInt *start, PetscInt *end)
408: {
410: #if defined(PETSC_USE_DEBUG)
411:   {
413:     PetscInt       dof,cdof;
414:     *start = *end = 0; /* Silence overzealous compiler warning */
415:     if (!dm->localSection) SETERRQ(PetscObjectComm((PetscObject) dm), PETSC_ERR_ARG_WRONG, "DM must have a local section, see DMSetLocalSection()");
416:     if (!dm->globalSection) SETERRQ(PetscObjectComm((PetscObject) dm), PETSC_ERR_ARG_WRONG, "DM must have a global section. It will be created automatically by DMGetGlobalSection()");
417:     PetscSectionGetOffset(dm->globalSection, point, start);
418:     PetscSectionGetDof(dm->globalSection, point, &dof);
419:     PetscSectionGetConstraintDof(dm->globalSection, point, &cdof);
420:     *end = *start + dof - cdof + (dof < 0 ? 1 : 0);
421:   }
422: #else
423:   {
424:     const PetscSection s    = dm->globalSection;
425:     const PetscInt     dof  = s->atlasDof[point - s->pStart];
426:     const PetscInt     cdof = s->bc ? s->bc->atlasDof[point - s->bc->pStart] : 0;
427:     *start = s->atlasOff[point - s->pStart];
428:     *end   = *start + dof - cdof + (dof < 0 ? 1 : 0);
429:   }
430: #endif
431:   return(0);
432: }

434: PETSC_STATIC_INLINE PetscErrorCode DMGetGlobalFieldOffset_Private(DM dm, PetscInt point, PetscInt field, PetscInt *start, PetscInt *end)
435: {
437: #if defined(PETSC_USE_DEBUG)
438:   {
439:     PetscInt       loff, lfoff, fdof, fcdof, ffcdof, f;
441:     *start = *end = 0; /* Silence overzealous compiler warning */
442:     if (!dm->localSection) SETERRQ(PetscObjectComm((PetscObject) dm), PETSC_ERR_ARG_WRONG, "DM must have a local section, see DMSetLocalSection()");
443:     if (!dm->globalSection) SETERRQ(PetscObjectComm((PetscObject) dm), PETSC_ERR_ARG_WRONG, "DM must have a global section. It will be crated automatically by DMGetGlobalSection()");
444:     PetscSectionGetOffset(dm->globalSection, point, start);
445:     PetscSectionGetOffset(dm->localSection, point, &loff);
446:     PetscSectionGetFieldOffset(dm->localSection, point, field, &lfoff);
447:     PetscSectionGetFieldDof(dm->localSection, point, field, &fdof);
448:     PetscSectionGetFieldConstraintDof(dm->localSection, point, field, &fcdof);
449:     *start = *start < 0 ? *start - (lfoff-loff) : *start + lfoff-loff;
450:     for (f = 0; f < field; ++f) {
451:       PetscSectionGetFieldConstraintDof(dm->localSection, point, f, &ffcdof);
452:       *start = *start < 0 ? *start + ffcdof : *start - ffcdof;
453:     }
454:     *end   = *start < 0 ? *start - (fdof-fcdof) : *start + fdof-fcdof;
455:   }
456: #else
457:   {
458:     const PetscSection s     = dm->localSection;
459:     const PetscSection fs    = dm->localSection->field[field];
460:     const PetscSection gs    = dm->globalSection;
461:     const PetscInt     loff  = s->atlasOff[point - s->pStart];
462:     const PetscInt     goff  = gs->atlasOff[point - s->pStart];
463:     const PetscInt     lfoff = fs->atlasOff[point - s->pStart];
464:     const PetscInt     fdof  = fs->atlasDof[point - s->pStart];
465:     const PetscInt     fcdof = fs->bc ? fs->bc->atlasDof[point - fs->bc->pStart] : 0;
466:     PetscInt           ffcdof = 0, f;

468:     for (f = 0; f < field; ++f) {
469:       const PetscSection ffs = dm->localSection->field[f];
470:       ffcdof += ffs->bc ? ffs->bc->atlasDof[point - ffs->bc->pStart] : 0;
471:     }
472:     *start = goff + (goff < 0 ? loff-lfoff + ffcdof : lfoff-loff - ffcdof);
473:     *end   = *start < 0 ? *start - (fdof-fcdof) : *start + fdof-fcdof;
474:   }
475: #endif
476:   return(0);
477: }

479: PETSC_EXTERN PetscErrorCode DMGetBasisTransformDM_Internal(DM, DM *);
480: PETSC_EXTERN PetscErrorCode DMGetBasisTransformVec_Internal(DM, Vec *);
481: PETSC_INTERN PetscErrorCode DMConstructBasisTransform_Internal(DM);

483: PETSC_INTERN PetscErrorCode DMGetLocalBoundingIndices_DMDA(DM, PetscReal[], PetscReal[]);
484: PETSC_INTERN PetscErrorCode DMSetField_Internal(DM, PetscInt, DMLabel, PetscObject);

486: PETSC_INTERN PetscErrorCode DMSetLabelValue_Fast(DM, DMLabel*, const char[], PetscInt, PetscInt);

488: PETSC_EXTERN PetscErrorCode DMUniversalLabelCreate(DM, DMUniversalLabel *);
489: PETSC_EXTERN PetscErrorCode DMUniversalLabelDestroy(DMUniversalLabel *);
490: PETSC_EXTERN PetscErrorCode DMUniversalLabelGetLabel(DMUniversalLabel, DMLabel *);
491: PETSC_EXTERN PetscErrorCode DMUniversalLabelCreateLabels(DMUniversalLabel, PetscBool, DM);
492: PETSC_EXTERN PetscErrorCode DMUniversalLabelSetLabelValue(DMUniversalLabel, DM, PetscBool, PetscInt, PetscInt);

494: #endif