1 #ifdef PETSC_RCS_HEADER 2 static char vcid[] = "$Id: matreg.c,v 1.18 2001/07/20 21:19:21 bsmith Exp $"; 3 #endif 4 /* 5 Mechanism for register PETSc matrix types 6 */ 7 #include "src/mat/matimpl.h" /*I "petscmat.h" I*/ 8 #include "petscsys.h" 9 10 PetscTruth MatRegisterAllCalled = PETSC_FALSE; 11 12 /* 13 Contains the list of registered Mat routines 14 */ 15 PetscFList MatList = 0; 16 17 #undef __FUNCT__ 18 #define __FUNCT__ "MatSetType" 19 /*@C 20 MatSetType - Builds matrix object for a particular matrix type 21 22 Collective on Mat 23 24 Input Parameters: 25 + mat - the matrix object 26 - matype - matrix type 27 28 Options Database Key: 29 . -mat_type <method> - Sets the type; use -help for a list 30 of available methods (for instance, seqaij) 31 32 Notes: 33 See "${PETSC_DIR}/include/petscmat.h" for available methods 34 35 Level: intermediate 36 37 .keywords: Mat, set, method 38 39 .seealso: PCSetType(), VecSetType(), MatCreate(), MatType, Mat 40 @*/ 41 int MatSetType(Mat mat,MatType matype) 42 { 43 int ierr,(*r)(Mat); 44 PetscTruth sametype; 45 46 PetscFunctionBegin; 47 PetscValidHeaderSpecific(mat,MAT_COOKIE); 48 49 ierr = PetscTypeCompare((PetscObject)mat,matype,&sametype);CHKERRQ(ierr); 50 if (!sametype) { 51 MatPreallocated(mat); 52 /* Get the function pointers for the matrix requested */ 53 if (!MatRegisterAllCalled) {ierr = MatRegisterAll(PETSC_NULL);CHKERRQ(ierr);} 54 ierr = PetscFListFind(mat->comm,MatList,matype,(void(**)(void))&r);CHKERRQ(ierr); 55 if (!r) SETERRQ1(1,"Unknown Mat type given: %s",matype); 56 57 /* free the old data structure if it existed */ 58 if (mat->ops->destroy) { 59 ierr = (*mat->ops->destroy)(mat);CHKERRQ(ierr); 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, 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(char *sname,char *path,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