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