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 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 70 /* create the new data structure */ 71 ierr = (*r)(mat);CHKERRQ(ierr); 72 73 ierr = PetscObjectChangeTypeName((PetscObject)mat,matype);CHKERRQ(ierr); 74 } 75 ierr = PetscPublishAll(mat);CHKERRQ(ierr); 76 PetscFunctionReturn(0); 77 } 78 79 80 #undef __FUNCT__ 81 #define __FUNCT__ "MatRegisterDestroy" 82 /*@C 83 MatRegisterDestroy - Frees the list of matrix types that were 84 registered by MatRegister()/MatRegisterDynamic(). 85 86 Not Collective 87 88 Level: advanced 89 90 .keywords: Mat, register, destroy 91 92 .seealso: MatRegister(), MatRegisterAll(), MatRegisterDynamic() 93 @*/ 94 int MatRegisterDestroy(void) 95 { 96 int ierr; 97 98 PetscFunctionBegin; 99 if (MatList) { 100 ierr = PetscFListDestroy(&MatList);CHKERRQ(ierr); 101 MatList = 0; 102 } 103 MatRegisterAllCalled = PETSC_FALSE; 104 PetscFunctionReturn(0); 105 } 106 107 #undef __FUNCT__ 108 #define __FUNCT__ "MatGetType" 109 /*@C 110 MatGetType - Gets the matrix type as a string from the matrix object. 111 112 Not Collective 113 114 Input Parameter: 115 . mat - the matrix 116 117 Output Parameter: 118 . name - name of matrix type 119 120 Level: intermediate 121 122 .keywords: Mat, get, method, name 123 124 .seealso: MatSetType() 125 @*/ 126 int MatGetType(Mat mat,MatType *type) 127 { 128 PetscFunctionBegin; 129 *type = mat->type_name; 130 PetscFunctionReturn(0); 131 } 132 133 134 #undef __FUNCT__ 135 #define __FUNCT__ "MatRegister" 136 /*@C 137 MatRegister - See MatRegisterDynamic() 138 139 Level: advanced 140 @*/ 141 int MatRegister(char *sname,char *path,char *name,int (*function)(Mat)) 142 { 143 int ierr; 144 char fullname[PETSC_MAX_PATH_LEN]; 145 146 PetscFunctionBegin; 147 ierr = PetscFListConcat(path,name,fullname);CHKERRQ(ierr); 148 ierr = PetscFListAdd(&MatList,sname,fullname,(void (*)(void))function);CHKERRQ(ierr); 149 PetscFunctionReturn(0); 150 } 151 152 153 154 155 156 157 158 159 160 161