Actual source code: dmimpl.h
1: #pragma once
3: #include <petscdm.h>
4: #ifdef PETSC_HAVE_LIBCEED
5: #include <petscdmceed.h>
6: #endif
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 _PetscHashAuxKey {
16: DMLabel label;
17: PetscInt value;
18: PetscInt part;
19: } PetscHashAuxKey;
21: #define PetscHashAuxKeyHash(key) PetscHashCombine(PetscHashCombine(PetscHashPointer((key).label), PetscHashInt((key).value)), PetscHashInt((key).part))
23: #define PetscHashAuxKeyEqual(k1, k2) (((k1).label == (k2).label) ? (((k1).value == (k2).value) ? ((k1).part == (k2).part) : 0) : 0)
25: PETSC_HASH_MAP(HMapAux, PetscHashAuxKey, Vec, PetscHashAuxKeyHash, PetscHashAuxKeyEqual, PETSC_NULLPTR)
27: struct _n_DMGeneratorFunctionList {
28: PetscErrorCode (*generate)(DM, PetscBool, DM *);
29: PetscErrorCode (*refine)(DM, PetscReal *, DM *);
30: PetscErrorCode (*adapt)(DM, Vec, DMLabel, DMLabel, DM *);
31: char *name;
32: PetscInt dim;
33: DMGeneratorFunctionList next;
34: };
36: typedef struct _DMOps *DMOps;
37: struct _DMOps {
38: PetscErrorCode (*view)(DM, PetscViewer);
39: PetscErrorCode (*load)(DM, PetscViewer);
40: PetscErrorCode (*clone)(DM, DM *);
41: PetscErrorCode (*setfromoptions)(DM, PetscOptionItems *);
42: PetscErrorCode (*setup)(DM);
43: PetscErrorCode (*createlocalsection)(DM);
44: PetscErrorCode (*createdefaultconstraints)(DM);
45: PetscErrorCode (*createglobalvector)(DM, Vec *);
46: PetscErrorCode (*createlocalvector)(DM, Vec *);
47: PetscErrorCode (*getlocaltoglobalmapping)(DM);
48: PetscErrorCode (*createfieldis)(DM, PetscInt *, char ***, IS **);
49: PetscErrorCode (*createcoordinatedm)(DM, DM *);
50: PetscErrorCode (*createcoordinatefield)(DM, DMField *);
52: PetscErrorCode (*getcoloring)(DM, ISColoringType, ISColoring *);
53: PetscErrorCode (*creatematrix)(DM, Mat *);
54: PetscErrorCode (*createinterpolation)(DM, DM, Mat *, Vec *);
55: PetscErrorCode (*createrestriction)(DM, DM, Mat *);
56: PetscErrorCode (*createmassmatrix)(DM, DM, Mat *);
57: PetscErrorCode (*createmassmatrixlumped)(DM, Vec *);
58: PetscErrorCode (*hascreateinjection)(DM, PetscBool *);
59: PetscErrorCode (*createinjection)(DM, DM, Mat *);
61: PetscErrorCode (*refine)(DM, MPI_Comm, DM *);
62: PetscErrorCode (*coarsen)(DM, MPI_Comm, DM *);
63: PetscErrorCode (*refinehierarchy)(DM, PetscInt, DM *);
64: PetscErrorCode (*coarsenhierarchy)(DM, PetscInt, DM *);
65: PetscErrorCode (*extrude)(DM, PetscInt, DM *);
67: PetscErrorCode (*globaltolocalbegin)(DM, Vec, InsertMode, Vec);
68: PetscErrorCode (*globaltolocalend)(DM, Vec, InsertMode, Vec);
69: PetscErrorCode (*localtoglobalbegin)(DM, Vec, InsertMode, Vec);
70: PetscErrorCode (*localtoglobalend)(DM, Vec, InsertMode, Vec);
71: PetscErrorCode (*localtolocalbegin)(DM, Vec, InsertMode, Vec);
72: PetscErrorCode (*localtolocalend)(DM, Vec, InsertMode, Vec);
74: PetscErrorCode (*destroy)(DM);
76: PetscErrorCode (*computevariablebounds)(DM, Vec, Vec);
78: PetscErrorCode (*createsubdm)(DM, PetscInt, const PetscInt *, IS *, DM *);
79: PetscErrorCode (*createsuperdm)(DM *, PetscInt, IS **, DM *);
80: PetscErrorCode (*createfielddecomposition)(DM, PetscInt *, char ***, IS **, DM **);
81: PetscErrorCode (*createdomaindecomposition)(DM, PetscInt *, char ***, IS **, IS **, DM **);
82: PetscErrorCode (*createddscatters)(DM, PetscInt, DM *, VecScatter **, VecScatter **, VecScatter **);
84: PetscErrorCode (*getdimpoints)(DM, PetscInt, PetscInt *, PetscInt *);
85: PetscErrorCode (*locatepoints)(DM, Vec, DMPointLocationType, PetscSF);
86: PetscErrorCode (*getneighbors)(DM, PetscInt *, const PetscMPIInt **);
87: PetscErrorCode (*getboundingbox)(DM, PetscReal *, PetscReal *);
88: PetscErrorCode (*getlocalboundingbox)(DM, PetscReal *, PetscReal *);
89: PetscErrorCode (*locatepointssubdomain)(DM, Vec, PetscMPIInt **);
91: PetscErrorCode (*projectfunctionlocal)(DM, PetscReal, PetscErrorCode (**)(PetscInt, PetscReal, const PetscReal[], PetscInt, PetscScalar *, void *), void **, InsertMode, Vec);
92: PetscErrorCode (*projectfunctionlabellocal)(DM, PetscReal, DMLabel, PetscInt, const PetscInt[], PetscInt, const PetscInt[], PetscErrorCode (**)(PetscInt, PetscReal, const PetscReal[], PetscInt, PetscScalar *, void *), void **, InsertMode, Vec);
93: 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);
94: 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);
95: 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);
96: PetscErrorCode (*computel2diff)(DM, PetscReal, PetscErrorCode (**)(PetscInt, PetscReal, const PetscReal[], PetscInt, PetscScalar *, void *), void **, Vec, PetscReal *);
97: PetscErrorCode (*computel2gradientdiff)(DM, PetscReal, PetscErrorCode (**)(PetscInt, PetscReal, const PetscReal[], const PetscReal[], PetscInt, PetscScalar *, void *), void **, Vec, const PetscReal[], PetscReal *);
98: PetscErrorCode (*computel2fielddiff)(DM, PetscReal, PetscErrorCode (**)(PetscInt, PetscReal, const PetscReal[], PetscInt, PetscScalar *, void *), void **, Vec, PetscReal *);
100: PetscErrorCode (*getcompatibility)(DM, DM, PetscBool *, PetscBool *);
101: };
103: PETSC_EXTERN PetscErrorCode DMLocalizeCoordinate_Internal(DM, PetscInt, const PetscScalar[], const PetscScalar[], PetscScalar[]);
104: PETSC_EXTERN PetscErrorCode DMLocalizeCoordinateReal_Internal(DM, PetscInt, const PetscReal[], const PetscReal[], PetscReal[]);
105: PETSC_EXTERN PetscErrorCode DMLocalizeAddCoordinate_Internal(DM, PetscInt, const PetscScalar[], const PetscScalar[], PetscScalar[]);
107: PETSC_INTERN PetscErrorCode DMCountNonCyclicReferences(PetscObject, PetscInt *);
109: typedef struct _DMCoarsenHookLink *DMCoarsenHookLink;
110: struct _DMCoarsenHookLink {
111: PetscErrorCode (*coarsenhook)(DM, DM, void *); /* Run once, when coarse DM is created */
112: PetscErrorCode (*restricthook)(DM, Mat, Vec, Mat, DM, void *); /* Run each time a new problem is restricted to a coarse grid */
113: void *ctx;
114: DMCoarsenHookLink next;
115: };
117: typedef struct _DMRefineHookLink *DMRefineHookLink;
118: struct _DMRefineHookLink {
119: PetscErrorCode (*refinehook)(DM, DM, void *); /* Run once, when a fine DM is created */
120: PetscErrorCode (*interphook)(DM, Mat, DM, void *); /* Run each time a new problem is interpolated to a fine grid */
121: void *ctx;
122: DMRefineHookLink next;
123: };
125: typedef struct _DMSubDomainHookLink *DMSubDomainHookLink;
126: struct _DMSubDomainHookLink {
127: PetscErrorCode (*ddhook)(DM, DM, void *);
128: PetscErrorCode (*restricthook)(DM, VecScatter, VecScatter, DM, void *);
129: void *ctx;
130: DMSubDomainHookLink next;
131: };
133: typedef struct _DMGlobalToLocalHookLink *DMGlobalToLocalHookLink;
134: struct _DMGlobalToLocalHookLink {
135: PetscErrorCode (*beginhook)(DM, Vec, InsertMode, Vec, void *);
136: PetscErrorCode (*endhook)(DM, Vec, InsertMode, Vec, void *);
137: void *ctx;
138: DMGlobalToLocalHookLink next;
139: };
141: typedef struct _DMLocalToGlobalHookLink *DMLocalToGlobalHookLink;
142: struct _DMLocalToGlobalHookLink {
143: PetscErrorCode (*beginhook)(DM, Vec, InsertMode, Vec, void *);
144: PetscErrorCode (*endhook)(DM, Vec, InsertMode, Vec, void *);
145: void *ctx;
146: DMLocalToGlobalHookLink next;
147: };
149: typedef enum {
150: DMVEC_STATUS_IN,
151: DMVEC_STATUS_OUT
152: } DMVecStatus;
153: typedef struct _DMNamedVecLink *DMNamedVecLink;
154: struct _DMNamedVecLink {
155: Vec X;
156: char *name;
157: DMVecStatus status;
158: DMNamedVecLink next;
159: };
161: typedef struct _DMWorkLink *DMWorkLink;
162: struct _DMWorkLink {
163: size_t bytes;
164: void *mem;
165: DMWorkLink next;
166: };
168: #define DM_MAX_WORK_VECTORS 100 /* work vectors available to users via DMGetGlobalVector(), DMGetLocalVector() */
170: struct _n_DMLabelLink {
171: DMLabel label;
172: PetscBool output;
173: struct _n_DMLabelLink *next;
174: };
175: typedef struct _n_DMLabelLink *DMLabelLink;
177: typedef struct _n_Boundary *DMBoundary;
179: struct _n_Boundary {
180: DSBoundary dsboundary;
181: DMLabel label;
182: DMBoundary next;
183: };
185: typedef struct _n_Field {
186: PetscObject disc; /* Field discretization, or a PetscContainer with the field name */
187: DMLabel label; /* Label defining the domain of definition of the field */
188: PetscBool adjacency[2]; /* Flags for defining variable influence (adjacency) for each field [use cone() or support() first, use the transitive closure] */
189: PetscBool avoidTensor; /* Flag to avoid defining field over tensor cells */
190: } RegionField;
192: typedef struct _n_Space {
193: PetscDS ds; /* Approximation space in this domain */
194: PetscDS dsIn; /* Approximation space for input to this domain (now only used for cohesive cells) */
195: DMLabel label; /* Label defining the domain of definition of the discretization */
196: IS fields; /* Map from DS field numbers to original field numbers in the DM */
197: } DMSpace;
199: struct _p_UniversalLabel {
200: DMLabel label; /* The universal label */
201: PetscInt Nl; /* Number of labels encoded */
202: char **names; /* The label names */
203: PetscInt *indices; /* The original indices in the input DM */
204: PetscInt Nv; /* Total number of values in all the labels */
205: PetscInt *bits; /* Starting bit for values of each label */
206: PetscInt *masks; /* Masks to pull out label value bits for each label */
207: PetscInt *offsets; /* Starting offset for label values for each label */
208: PetscInt *values; /* Original label values before renumbering */
209: };
211: PETSC_INTERN PetscErrorCode DMDestroyLabelLinkList_Internal(DM);
213: #define MAXDMMONITORS 5
215: typedef struct {
216: PetscInt dim; /* The dimension of the embedding space */
217: DM dm; /* Layout for coordinates */
218: Vec x; /* Coordinate values in global vector */
219: Vec xl; /* Coordinate values in local vector */
220: DMField field; /* Coordinates as an abstract field */
221: } DMCoordinates;
223: struct _p_DM {
224: PETSCHEADER(struct _DMOps);
225: Vec localin[DM_MAX_WORK_VECTORS], localout[DM_MAX_WORK_VECTORS];
226: Vec globalin[DM_MAX_WORK_VECTORS], globalout[DM_MAX_WORK_VECTORS];
227: DMNamedVecLink namedglobal;
228: DMNamedVecLink namedlocal;
229: DMWorkLink workin, workout;
230: DMLabelLink labels; /* Linked list of labels */
231: DMLabel depthLabel; /* Optimized access to depth label */
232: DMLabel celltypeLabel; /* Optimized access to celltype label */
233: void *ctx; /* a user context */
234: PetscErrorCode (*ctxdestroy)(void **);
235: ISColoringType coloringtype;
236: MatFDColoring fd;
237: VecType vectype; /* type of vector created with DMCreateLocalVector() and DMCreateGlobalVector() */
238: MatType mattype; /* type of matrix created with DMCreateMatrix() */
239: PetscInt bind_below; /* Local size threshold (in entries/rows) below which Vec/Mat objects are bound to CPU */
240: PetscInt bs;
241: DMBlockingType blocking_type;
242: ISLocalToGlobalMapping ltogmap;
243: PetscBool prealloc_skip; // Flag indicating the DMCreateMatrix() should not preallocate (only set sizes and local-to-global)
244: PetscBool prealloc_only; /* Flag indicating the DMCreateMatrix() should only preallocate, not fill the matrix */
245: PetscBool structure_only; /* Flag indicating the DMCreateMatrix() create matrix structure without values */
246: 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 */
247: 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 */
248: PetscBool setfromoptionscalled;
249: void *data;
250: /* Hierarchy / Submeshes */
251: DM coarseMesh;
252: DM fineMesh;
253: DMCoarsenHookLink coarsenhook; /* For transferring auxiliary problem data to coarser grids */
254: DMRefineHookLink refinehook;
255: DMSubDomainHookLink subdomainhook;
256: DMGlobalToLocalHookLink gtolhook;
257: DMLocalToGlobalHookLink ltoghook;
258: /* Topology */
259: PetscInt dim; /* The topological dimension */
260: /* Auxiliary data */
261: PetscHMapAux auxData; /* Auxiliary DM and Vec for region denoted by the key */
262: /* Flexible communication */
263: PetscSF sfMigration; /* SF for point distribution created during distribution */
264: PetscSF sf; /* SF for parallel point overlap */
265: PetscSF sectionSF; /* SF for parallel dof overlap using section */
266: PetscSF sfNatural; /* SF mapping to the "natural" ordering */
267: PetscBool useNatural; /* Create the natural SF */
268: /* Allows a non-standard data layout */
269: PetscBool adjacency[2]; /* [use cone() or support() first, use the transitive closure] */
270: PetscSection localSection; /* Layout for local vectors */
271: PetscSection globalSection; /* Layout for global vectors */
272: PetscLayout map;
273: // Affine transform applied in DMGlobalToLocal
274: struct {
275: VecScatter affine_to_local;
276: Vec affine;
277: PetscErrorCode (*setup)(DM);
278: } periodic;
279: /* Constraints */
280: struct {
281: PetscSection section;
282: Mat mat;
283: Vec bias;
284: } defaultConstraint;
285: /* Basis transformation */
286: DM transformDM; /* Layout for basis transformation */
287: Vec transform; /* Basis transformation matrices */
288: void *transformCtx; /* Basis transformation context */
289: PetscErrorCode (*transformSetUp)(DM, void *);
290: PetscErrorCode (*transformDestroy)(DM, void *);
291: PetscErrorCode (*transformGetMatrix)(DM, const PetscReal[], PetscBool, const PetscScalar **, void *);
292: /* Coordinates */
293: DMCoordinates coordinates[2]; /* Coordinates, 0 is default, 1 is possible DG coordinate field for periodicity */
294: /* Periodicity */
295: PetscReal *Lstart, *L, *maxCell; /* Size of periodic box and max cell size for determining periodicity */
296: PetscBool sparseLocalize; /* Localize coordinates only for cells near periodic boundary */
297: /* Null spaces -- of course I should make this have a variable number of fields */
298: NullSpaceFunc nullspaceConstructors[10];
299: NullSpaceFunc nearnullspaceConstructors[10];
300: /* Fields are represented by objects */
301: PetscInt Nf; /* Number of fields defined on the total domain */
302: RegionField *fields; /* Array of discretization fields with regions of validity */
303: DMBoundary boundary; /* List of boundary conditions */
304: PetscInt Nds; /* Number of discrete systems defined on the total domain */
305: DMSpace *probs; /* Array of discrete systems */
306: /* Output structures */
307: DM dmBC; /* The DM with boundary conditions in the global DM */
308: PetscInt outputSequenceNum; /* The current sequence number for output */
309: PetscReal outputSequenceVal; /* The current sequence value for output */
310: PetscErrorCode (*monitor[MAXDMMONITORS])(DM, void *);
311: PetscErrorCode (*monitordestroy[MAXDMMONITORS])(void **);
312: void *monitorcontext[MAXDMMONITORS];
313: PetscInt numbermonitors;
314: /* Configuration */
315: PetscBool cloneOpts; /* Flag indicating that this is a linked clone and should not respond to some options. This is currently used to prevent transformations from also affecting the coordinate DM */
317: PetscObject dmksp, dmsnes, dmts;
318: #ifdef PETSC_HAVE_LIBCEED
319: Ceed ceed; // LibCEED context
320: CeedElemRestriction ceedERestrict; // Map from the local vector (Lvector) to the cells (Evector)
321: #endif
322: DMCeed dmceed; // CEED operator and data for this problem
323: };
325: PETSC_EXTERN PetscLogEvent DM_Convert;
326: PETSC_EXTERN PetscLogEvent DM_GlobalToLocal;
327: PETSC_EXTERN PetscLogEvent DM_LocalToGlobal;
328: PETSC_EXTERN PetscLogEvent DM_LocatePoints;
329: PETSC_EXTERN PetscLogEvent DM_Coarsen;
330: PETSC_EXTERN PetscLogEvent DM_Refine;
331: PETSC_EXTERN PetscLogEvent DM_CreateInterpolation;
332: PETSC_EXTERN PetscLogEvent DM_CreateRestriction;
333: PETSC_EXTERN PetscLogEvent DM_CreateInjection;
334: PETSC_EXTERN PetscLogEvent DM_CreateMatrix;
335: PETSC_EXTERN PetscLogEvent DM_CreateMassMatrix;
336: PETSC_EXTERN PetscLogEvent DM_Load;
337: PETSC_EXTERN PetscLogEvent DM_AdaptInterpolator;
338: PETSC_EXTERN PetscLogEvent DM_ProjectFunction;
340: PETSC_EXTERN PetscErrorCode DMCreateGlobalVector_Section_Private(DM, Vec *);
341: PETSC_EXTERN PetscErrorCode DMCreateLocalVector_Section_Private(DM, Vec *);
343: PETSC_EXTERN PetscErrorCode DMView_GLVis(DM, PetscViewer, PetscErrorCode (*)(DM, PetscViewer));
345: /*
347: Composite Vectors
349: Single global representation
350: Individual global representations
351: Single local representation
352: Individual local representations
354: Subsets of individual as a single????? Do we handle this by having DMComposite inside composite??????
356: DM da_u, da_v, da_p
358: DM dm_velocities
360: DM dm
362: DMDACreate(,&da_u);
363: DMDACreate(,&da_v);
364: DMCompositeCreate(,&dm_velocities);
365: DMCompositeAddDM(dm_velocities,(DM)du);
366: DMCompositeAddDM(dm_velocities,(DM)dv);
368: DMDACreate(,&da_p);
369: DMCompositeCreate(,&dm_velocities);
370: DMCompositeAddDM(dm,(DM)dm_velocities);
371: DMCompositeAddDM(dm,(DM)dm_p);
373: Access parts of composite vectors (Composite only)
374: ---------------------------------
375: DMCompositeGetAccess - access the global vector as subvectors and array (for redundant arrays)
376: ADD for local vector -
378: Element access
379: --------------
380: From global vectors
381: -DAVecGetArray - for DMDA
382: -VecGetArray - for DMSliced
383: ADD for DMComposite??? maybe
385: From individual vector
386: -DAVecGetArray - for DMDA
387: -VecGetArray -for sliced
388: ADD for DMComposite??? maybe
390: From single local vector
391: ADD * single local vector as arrays?
393: Communication
394: -------------
395: DMGlobalToLocal - global vector to single local vector
397: DMCompositeScatter/Gather - direct to individual local vectors and arrays CHANGE name closer to GlobalToLocal?
399: Obtaining vectors
400: -----------------
401: DMCreateGlobal/Local
402: DMGetGlobal/Local
403: DMCompositeGetLocalVectors - gives individual local work vectors and arrays
405: ????? individual global vectors ????
407: */
409: #if defined(PETSC_HAVE_HDF5)
410: PETSC_EXTERN PetscErrorCode DMSequenceLoad_HDF5_Internal(DM, const char *, PetscInt, PetscScalar *, PetscViewer);
411: #endif
413: static inline PetscErrorCode DMGetLocalOffset_Private(DM dm, PetscInt point, PetscInt *start, PetscInt *end)
414: {
415: PetscFunctionBeginHot;
416: #if defined(PETSC_USE_DEBUG)
417: {
418: PetscInt dof;
420: *start = *end = 0; /* Silence overzealous compiler warning */
421: PetscCheck(dm->localSection, PetscObjectComm((PetscObject)dm), PETSC_ERR_ARG_WRONG, "DM must have a local section, see DMSetLocalSection()");
422: PetscCall(PetscSectionGetOffset(dm->localSection, point, start));
423: PetscCall(PetscSectionGetDof(dm->localSection, point, &dof));
424: *end = *start + dof;
425: }
426: #else
427: {
428: const PetscSection s = dm->localSection;
429: *start = s->atlasOff[point - s->pStart];
430: *end = *start + s->atlasDof[point - s->pStart];
431: }
432: #endif
433: PetscFunctionReturn(PETSC_SUCCESS);
434: }
436: static inline PetscErrorCode DMGetLocalFieldOffset_Private(DM dm, PetscInt point, PetscInt field, PetscInt *start, PetscInt *end)
437: {
438: PetscFunctionBegin;
439: #if defined(PETSC_USE_DEBUG)
440: {
441: PetscInt dof;
442: *start = *end = 0; /* Silence overzealous compiler warning */
443: PetscCheck(dm->localSection, PetscObjectComm((PetscObject)dm), PETSC_ERR_ARG_WRONG, "DM must have a local section, see DMSetLocalSection()");
444: PetscCall(PetscSectionGetFieldOffset(dm->localSection, point, field, start));
445: PetscCall(PetscSectionGetFieldDof(dm->localSection, point, field, &dof));
446: *end = *start + dof;
447: }
448: #else
449: {
450: const PetscSection s = dm->localSection->field[field];
451: *start = s->atlasOff[point - s->pStart];
452: *end = *start + s->atlasDof[point - s->pStart];
453: }
454: #endif
455: PetscFunctionReturn(PETSC_SUCCESS);
456: }
458: static inline PetscErrorCode DMGetGlobalOffset_Private(DM dm, PetscInt point, PetscInt *start, PetscInt *end)
459: {
460: PetscFunctionBegin;
461: #if defined(PETSC_USE_DEBUG)
462: {
463: PetscInt dof, cdof;
464: *start = *end = 0; /* Silence overzealous compiler warning */
465: PetscCheck(dm->localSection, PetscObjectComm((PetscObject)dm), PETSC_ERR_ARG_WRONG, "DM must have a local section, see DMSetLocalSection()");
466: PetscCheck(dm->globalSection, PetscObjectComm((PetscObject)dm), PETSC_ERR_ARG_WRONG, "DM must have a global section. It will be created automatically by DMGetGlobalSection()");
467: PetscCall(PetscSectionGetOffset(dm->globalSection, point, start));
468: PetscCall(PetscSectionGetDof(dm->globalSection, point, &dof));
469: PetscCall(PetscSectionGetConstraintDof(dm->globalSection, point, &cdof));
470: *end = *start + dof - cdof + (dof < 0 ? 1 : 0);
471: }
472: #else
473: {
474: const PetscSection s = dm->globalSection;
475: const PetscInt dof = s->atlasDof[point - s->pStart];
476: const PetscInt cdof = s->bc ? s->bc->atlasDof[point - s->bc->pStart] : 0;
477: *start = s->atlasOff[point - s->pStart];
478: *end = *start + dof - cdof + (dof < 0 ? 1 : 0);
479: }
480: #endif
481: PetscFunctionReturn(PETSC_SUCCESS);
482: }
484: static inline PetscErrorCode DMGetGlobalFieldOffset_Private(DM dm, PetscInt point, PetscInt field, PetscInt *start, PetscInt *end)
485: {
486: PetscFunctionBegin;
487: #if defined(PETSC_USE_DEBUG)
488: {
489: PetscInt loff, lfoff, fdof, fcdof, ffcdof, f;
490: *start = *end = 0; /* Silence overzealous compiler warning */
491: PetscCheck(dm->localSection, PetscObjectComm((PetscObject)dm), PETSC_ERR_ARG_WRONG, "DM must have a local section, see DMSetLocalSection()");
492: PetscCheck(dm->globalSection, PetscObjectComm((PetscObject)dm), PETSC_ERR_ARG_WRONG, "DM must have a global section. It will be created automatically by DMGetGlobalSection()");
493: PetscCall(PetscSectionGetOffset(dm->globalSection, point, start));
494: PetscCall(PetscSectionGetOffset(dm->localSection, point, &loff));
495: PetscCall(PetscSectionGetFieldOffset(dm->localSection, point, field, &lfoff));
496: PetscCall(PetscSectionGetFieldDof(dm->localSection, point, field, &fdof));
497: PetscCall(PetscSectionGetFieldConstraintDof(dm->localSection, point, field, &fcdof));
498: *start = *start < 0 ? *start - (lfoff - loff) : *start + lfoff - loff;
499: for (f = 0; f < field; ++f) {
500: PetscCall(PetscSectionGetFieldConstraintDof(dm->localSection, point, f, &ffcdof));
501: *start = *start < 0 ? *start + ffcdof : *start - ffcdof;
502: }
503: *end = *start < 0 ? *start - (fdof - fcdof) : *start + fdof - fcdof;
504: }
505: #else
506: {
507: const PetscSection s = dm->localSection;
508: const PetscSection fs = dm->localSection->field[field];
509: const PetscSection gs = dm->globalSection;
510: const PetscInt loff = s->atlasOff[point - s->pStart];
511: const PetscInt goff = gs->atlasOff[point - s->pStart];
512: const PetscInt lfoff = fs->atlasOff[point - s->pStart];
513: const PetscInt fdof = fs->atlasDof[point - s->pStart];
514: const PetscInt fcdof = fs->bc ? fs->bc->atlasDof[point - fs->bc->pStart] : 0;
515: PetscInt ffcdof = 0, f;
517: for (f = 0; f < field; ++f) {
518: const PetscSection ffs = dm->localSection->field[f];
519: ffcdof += ffs->bc ? ffs->bc->atlasDof[point - ffs->bc->pStart] : 0;
520: }
521: *start = goff + (goff < 0 ? loff - lfoff + ffcdof : lfoff - loff - ffcdof);
522: *end = *start < 0 ? *start - (fdof - fcdof) : *start + fdof - fcdof;
523: }
524: #endif
525: PetscFunctionReturn(PETSC_SUCCESS);
526: }
528: PETSC_EXTERN PetscErrorCode DMGetBasisTransformDM_Internal(DM, DM *);
529: PETSC_EXTERN PetscErrorCode DMGetBasisTransformVec_Internal(DM, Vec *);
530: PETSC_INTERN PetscErrorCode DMConstructBasisTransform_Internal(DM);
532: PETSC_INTERN PetscErrorCode DMGetLocalBoundingIndices_DMDA(DM, PetscReal[], PetscReal[]);
533: PETSC_INTERN PetscErrorCode DMSetField_Internal(DM, PetscInt, DMLabel, PetscObject);
535: PETSC_INTERN PetscErrorCode DMSetLabelValue_Fast(DM, DMLabel *, const char[], PetscInt, PetscInt);
537: PETSC_INTERN PetscErrorCode DMCompleteBCLabels_Internal(DM dm);
538: PETSC_EXTERN PetscErrorCode DMUniversalLabelCreate(DM, DMUniversalLabel *);
539: PETSC_EXTERN PetscErrorCode DMUniversalLabelDestroy(DMUniversalLabel *);
540: PETSC_EXTERN PetscErrorCode DMUniversalLabelGetLabel(DMUniversalLabel, DMLabel *);
541: PETSC_EXTERN PetscErrorCode DMUniversalLabelCreateLabels(DMUniversalLabel, PetscBool, DM);
542: PETSC_EXTERN PetscErrorCode DMUniversalLabelSetLabelValue(DMUniversalLabel, DM, PetscBool, PetscInt, PetscInt);
543: PETSC_INTERN PetscInt PetscGCD(PetscInt a, PetscInt b);