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 PetscErrorCode MatSetType(Mat mat,const MatType matype) 39 { 40 PetscErrorCode 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(PETSC_ERR_ARG_UNKNOWN_TYPE,"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 /* create the new data structure */ 70 ierr = (*r)(mat);CHKERRQ(ierr); 71 ierr = PetscObjectChangeTypeName((PetscObject)mat,matype);CHKERRQ(ierr); 72 } 73 ierr = PetscPublishAll(mat);CHKERRQ(ierr); 74 PetscFunctionReturn(0); 75 } 76 77 78 #undef __FUNCT__ 79 #define __FUNCT__ "MatRegisterDestroy" 80 /*@C 81 MatRegisterDestroy - Frees the list of matrix types that were 82 registered by MatRegister()/MatRegisterDynamic(). 83 84 Not Collective 85 86 Level: advanced 87 88 .keywords: Mat, register, destroy 89 90 .seealso: MatRegister(), MatRegisterAll(), MatRegisterDynamic() 91 @*/ 92 PetscErrorCode MatRegisterDestroy(void) 93 { 94 PetscErrorCode ierr; 95 96 PetscFunctionBegin; 97 if (MatList) { 98 ierr = PetscFListDestroy(&MatList);CHKERRQ(ierr); 99 MatList = 0; 100 } 101 MatRegisterAllCalled = PETSC_FALSE; 102 PetscFunctionReturn(0); 103 } 104 105 #undef __FUNCT__ 106 #define __FUNCT__ "MatGetType" 107 /*@C 108 MatGetType - Gets the matrix type as a string from the matrix object. 109 110 Not Collective 111 112 Input Parameter: 113 . mat - the matrix 114 115 Output Parameter: 116 . name - name of matrix type 117 118 Level: intermediate 119 120 .keywords: Mat, MatType, get, method, name 121 122 .seealso: MatSetType() 123 @*/ 124 PetscErrorCode MatGetType(Mat mat,MatType *type) 125 { 126 PetscFunctionBegin; 127 *type = mat->type_name; 128 PetscFunctionReturn(0); 129 } 130 131 132 #undef __FUNCT__ 133 #define __FUNCT__ "MatRegister" 134 /*@C 135 MatRegister - See MatRegisterDynamic() 136 137 Level: advanced 138 @*/ 139 PetscErrorCode MatRegister(const char sname[],const char path[],const char name[],PetscErrorCode (*function)(Mat)) 140 { 141 PetscErrorCode ierr; 142 char fullname[PETSC_MAX_PATH_LEN]; 143 144 PetscFunctionBegin; 145 ierr = PetscFListConcat(path,name,fullname);CHKERRQ(ierr); 146 ierr = PetscFListAdd(&MatList,sname,fullname,(void (*)(void))function);CHKERRQ(ierr); 147 PetscFunctionReturn(0); 148 } 149 150 151 152 153 154 155 156 157 158 159