Actual source code: fieldClassMapCreate.c

  1: #ifdef PETSC_RCS_HEADER
  2: static char vcid[] = "$Id: fieldClassMapCreate.c,v 1.3 2000/01/10 03:54:17 knepley Exp $";
  3: #endif

 5:  #include src/grid/gridimpl.h

  7: /*@ 
  8:   FieldClassMapCreate - This function creates an empty field class map.

 10:   Collective on MPI_Comm

 12:   Input Parameter:
 13: . comm - The communicator for the object

 15:   Output Parameter:
 16: . map  - The map

 18:   Level: beginner

 20: .keywords: class, field class, class map, create
 21: .seealso: FieldClassMapSetType()
 22: @*/
 23: int FieldClassMapCreate(MPI_Comm comm, FieldClassMap *map)
 24: {
 25:   FieldClassMap cm;
 26:   int           ierr;

 30:   *map = PETSC_NULL;
 31: #ifndef PETSC_USE_DYNAMIC_LIBRARIES
 32:   GridInitializePackage(PETSC_NULL);
 33: #endif

 35:   PetscHeaderCreate(cm, _FieldClassMap, FieldClassMapOps, CLASS_MAP_COOKIE, -1, "FieldClassMap", comm,
 36:                     FieldClassMapDestroy, FieldClassMapView);
 37:   PetscLogObjectCreate(cm);
 38:   PetscLogObjectMemory(cm, sizeof(struct _FieldClassMap));
 39:   PetscMemzero(cm->ops, sizeof(FieldClassMapOps));
 40:   cm->bops->publish  = PETSC_NULL /* FieldClassMapPublish_Petsc */;
 41:   cm->type_name      = PETSC_NULL;
 42:   cm->serialize_name = PETSC_NULL;
 43:   cm->data           = PETSC_NULL;

 45:   /* Initialize fields */
 46:   cm->numFields          = 0;
 47:   cm->fields             = PETSC_NULL;
 48:   cm->numNodes           = 0;
 49:   cm->numGhostNodes      = 0;
 50:   cm->numOverlapNodes    = 0;
 51:   cm->numClasses         = 0;
 52:   cm->fieldClasses       = PETSC_NULL;
 53:   cm->classes            = PETSC_NULL;
 54:   cm->classSizes         = PETSC_NULL;
 55:   cm->isReduced          = PETSC_FALSE;
 56:   cm->reduceFieldClasses = PETSC_NULL;
 57:   cm->isConstrained      = PETSC_FALSE;
 58:   cm->isClassConstrained = PETSC_NULL;
 59:   cm->classSizeDiffs     = PETSC_NULL;
 60:   cm->mapSize            = 0;
 61:   cm->numOldClasses      = 0;
 62:   cm->classMap           = PETSC_NULL;

 64:   *map = cm;
 65:   return(0);
 66: }

 68: /*@ 
 69:   FieldClassMapSerialize - This function stores or recreates a field class map using a viewer for a binary file.

 71:   Collective on MPI_Comm

 73:   Input Parameters:
 74: + comm   - The communicator for the object
 75: . viewer - The viewer context
 76: - store  - This flag is PETSC_TRUE is data is being written, otherwise it will be read

 78:   Output Parameter:
 79: . map    - The map

 81:   Level: beginner

 83: .keywords: class, field class, class map, serialize
 84: .seealso: MeshSerialize(), GridSerialize()
 85: @*/
 86: int FieldClassMapSerialize(MPI_Comm comm, FieldClassMap *map, PetscViewer viewer, PetscTruth store)
 87: {
 88:   int      (*serialize)(MPI_Comm, FieldClassMap *, PetscViewer, PetscTruth);
 89:   int        fd, len;
 90:   char      *name;
 91:   PetscTruth match;
 92:   int        ierr;


 98:   PetscTypeCompare((PetscObject) viewer, PETSC_VIEWER_BINARY, &match);
 99:   if (match == PETSC_FALSE) SETERRQ(PETSC_ERR_ARG_WRONG, "Must be binary viewer");
100:   PetscViewerBinaryGetDescriptor(viewer, &fd);

102:   if (store) {
104:     PetscStrlen((*map)->class_name, &len);
105:     PetscBinaryWrite(fd, &len,                    1,   PETSC_INT,  0);
106:     PetscBinaryWrite(fd,  (*map)->class_name,     len, PETSC_CHAR, 0);
107:     PetscStrlen((*map)->serialize_name, &len);
108:     PetscBinaryWrite(fd, &len,                    1,   PETSC_INT,  0);
109:     PetscBinaryWrite(fd,  (*map)->serialize_name, len, PETSC_CHAR, 0);
110:     PetscFListFind(comm, FieldClassMapSerializeList, (*map)->serialize_name, (void (**)(void)) &serialize);
111:     if (!serialize) SETERRQ(PETSC_ERR_ARG_WRONG, "Type cannot be serialized");
112:     (*serialize)(comm, map, viewer, store);
113:   } else {
114:     PetscBinaryRead(fd, &len,    1,   PETSC_INT);
115:     PetscMalloc((len+1) * sizeof(char), &name);
116:     name[len] = 0;
117:     PetscBinaryRead(fd,  name,   len, PETSC_CHAR);
118:     PetscStrcmp(name, "FieldClassMap", &match);
119:     PetscFree(name);
120:     if (match == PETSC_FALSE) SETERRQ(PETSC_ERR_ARG_WRONG, "Non-fieldClassMap object");
121:     /* Dispatch to the correct routine */
122:     if (!FieldClassMapSerializeRegisterAllCalled) {
123:       FieldClassMapSerializeRegisterAll(PETSC_NULL);
124:     }
125:     if (!FieldClassMapSerializeList) SETERRQ(PETSC_ERR_ARG_CORRUPT, "Could not find table of methods");
126:     PetscBinaryRead(fd, &len,    1,   PETSC_INT);
127:     PetscMalloc((len+1) * sizeof(char), &name);
128:     name[len] = 0;
129:     PetscBinaryRead(fd,  name,   len, PETSC_CHAR);
130:     PetscFListFind(comm, FieldClassMapSerializeList, name, (void (**)(void)) &serialize);
131:     if (!serialize) SETERRQ(PETSC_ERR_ARG_WRONG, "Type cannot be serialized");
132:     (*serialize)(comm, map, viewer, store);
133:     PetscStrfree((*map)->serialize_name);
134:     (*map)->serialize_name = name;
135:   }

137:   return(0);
138: }