1 /* 2 Mechanism for register PETSc matrix types 3 */ 4 #include "src/mat/matimpl.h" /*I "petscmat.h" I*/ 5 #include "petscsys.h" 6 7 PetscTruth MatRegisterAllCalled = PETSC_FALSE; 8 9 /* 10 Contains the list of registered Mat routines 11 */ 12 PetscFList MatList = 0; 13 14 #undef __FUNCT__ 15 #define __FUNCT__ "MatSetType" 16 /*@C 17 MatSetType - Builds matrix object for a particular matrix type 18 19 Collective on Mat 20 21 Input Parameters: 22 + mat - the matrix object 23 - matype - matrix type 24 25 Options Database Key: 26 . -mat_type <method> - Sets the type; use -help for a list 27 of available methods (for instance, seqaij) 28 29 Notes: 30 See "${PETSC_DIR}/include/petscmat.h" for available methods 31 32 Level: intermediate 33 34 .keywords: Mat, MatType, set, method 35 36 .seealso: PCSetType(), VecSetType(), MatCreate(), MatType, Mat 37 @*/ 38 int MatSetType(Mat mat,const MatType matype) 39 { 40 int ierr,(*r)(Mat); 41 PetscTruth sametype; 42 43 PetscFunctionBegin; 44 PetscValidHeaderSpecific(mat,MAT_COOKIE,1); 45 46 ierr = PetscTypeCompare((PetscObject)mat,matype,&sametype);CHKERRQ(ierr); 47 if (!sametype) { 48 /* Get the function pointers for the matrix requested */ 49 if (!MatRegisterAllCalled) {ierr = MatRegisterAll(PETSC_NULL);CHKERRQ(ierr);} 50 ierr = PetscFListFind(mat->comm,MatList,matype,(void(**)(void))&r);CHKERRQ(ierr); 51 if (!r) SETERRQ1(1,"Unknown Mat type given: %s",matype); 52 53 /* free the old data structure if it existed */ 54 if (mat->ops->destroy) { 55 MatPreallocated(mat); 56 ierr = (*mat->ops->destroy)(mat);CHKERRQ(ierr); 57 mat->ops->destroy = PETSC_NULL; 58 mat->preallocated = PETSC_FALSE; 59 } 60 61 if (mat->rmap) { 62 ierr = PetscMapDestroy(mat->rmap);CHKERRQ(ierr); 63 mat->rmap = 0; 64 } 65 if (mat->cmap) { 66 ierr = PetscMapDestroy(mat->cmap);CHKERRQ(ierr); 67 mat->cmap = 0; 68 } 69 if (mat->qlist) { 70 ierr = PetscFListDestroy(&mat->qlist);CHKERRQ(ierr); 71 mat->qlist = 0; 72 } 73 if (mat->olist) { 74 ierr = PetscOListDestroy(&mat->olist);CHKERRQ(ierr); 75 mat->olist = 0; 76 } 77 /* create the new data structure */ 78 ierr = (*r)(mat);CHKERRQ(ierr); 79 80 ierr = PetscObjectChangeTypeName((PetscObject)mat,matype);CHKERRQ(ierr); 81 } 82 ierr = PetscPublishAll(mat);CHKERRQ(ierr); 83 PetscFunctionReturn(0); 84 } 85 86 87 #undef __FUNCT__ 88 #define __FUNCT__ "MatRegisterDestroy" 89 /*@C 90 MatRegisterDestroy - Frees the list of matrix types that were 91 registered by MatRegister()/MatRegisterDynamic(). 92 93 Not Collective 94 95 Level: advanced 96 97 .keywords: Mat, register, destroy 98 99 .seealso: MatRegister(), MatRegisterAll(), MatRegisterDynamic() 100 @*/ 101 int MatRegisterDestroy(void) 102 { 103 int ierr; 104 105 PetscFunctionBegin; 106 if (MatList) { 107 ierr = PetscFListDestroy(&MatList);CHKERRQ(ierr); 108 MatList = 0; 109 } 110 MatRegisterAllCalled = PETSC_FALSE; 111 PetscFunctionReturn(0); 112 } 113 114 #undef __FUNCT__ 115 #define __FUNCT__ "MatGetType" 116 /*@C 117 MatGetType - Gets the matrix type as a string from the matrix object. 118 119 Not Collective 120 121 Input Parameter: 122 . mat - the matrix 123 124 Output Parameter: 125 . name - name of matrix type 126 127 Level: intermediate 128 129 .keywords: Mat, MatType, get, method, name 130 131 .seealso: MatSetType() 132 @*/ 133 int MatGetType(Mat mat,MatType *type) 134 { 135 PetscFunctionBegin; 136 *type = mat->type_name; 137 PetscFunctionReturn(0); 138 } 139 140 141 #undef __FUNCT__ 142 #define __FUNCT__ "MatRegister" 143 /*@C 144 MatRegister - See MatRegisterDynamic() 145 146 Level: advanced 147 @*/ 148 int MatRegister(const char sname[],const char path[],const char name[],int (*function)(Mat)) 149 { 150 int ierr; 151 char fullname[PETSC_MAX_PATH_LEN]; 152 153 PetscFunctionBegin; 154 ierr = PetscFListConcat(path,name,fullname);CHKERRQ(ierr); 155 ierr = PetscFListAdd(&MatList,sname,fullname,(void (*)(void))function);CHKERRQ(ierr); 156 PetscFunctionReturn(0); 157 } 158 159 160 161 162 163 164 165 166 167 168