1 #define PETSC_DLL 2 3 #include "petscsys.h" /*I "petscsys.h" I*/ 4 5 #undef __FUNCT__ 6 #define __FUNCT__ "PetscObjectSetName" 7 /*@C 8 PetscObjectSetName - Sets a string name associated with a PETSc object. 9 10 Not Collective 11 12 Input Parameters: 13 + obj - the Petsc variable 14 Thus must be cast with a (PetscObject), for example, 15 PetscObjectSetName((PetscObject)mat,name); 16 - name - the name to give obj 17 18 Level: advanced 19 20 Concepts: object name^setting 21 22 .seealso: PetscObjectGetName() 23 @*/ 24 PetscErrorCode PetscObjectSetName(PetscObject obj,const char name[]) 25 { 26 PetscErrorCode ierr; 27 28 PetscFunctionBegin; 29 PetscValidHeader(obj,1); 30 ierr = PetscFree(obj->name);CHKERRQ(ierr); 31 ierr = PetscStrallocpy(name,&obj->name);CHKERRQ(ierr); 32 PetscFunctionReturn(0); 33 } 34 35 #undef __FUNCT__ 36 #define __FUNCT__ "PetscObjectPrintClassNamePrefixType" 37 /*@C 38 PetscObjectPrintTypeNamePrefix - used in the XXXView() methods to display information about the class, name, prefix and type of an object 39 40 Input Parameters: 41 + obj - the PETSc object 42 . viewer - ASCII viewer where the information is printed 43 - string - for example "Matrix Object" 44 45 Level: developer 46 47 .seealso: PetscObjectSetName(), PetscObjectName() 48 49 @*/ 50 PetscErrorCode PetscObjectPrintClassNamePrefixType(PetscObject obj,PetscViewer viewer,const char string[]) 51 { 52 PetscErrorCode ierr; 53 MPI_Comm comm; 54 PetscMPIInt size; 55 56 PetscFunctionBegin; 57 ierr = PetscViewerASCIIPrintf(viewer,"%s:",string);CHKERRQ(ierr); 58 if (obj->name) { 59 ierr = PetscViewerASCIIPrintf(viewer,"%s",obj->name);CHKERRQ(ierr); 60 } 61 if (obj->prefix) { 62 ierr = PetscViewerASCIIPrintf(viewer,"(%s)",obj->prefix);CHKERRQ(ierr); 63 } 64 ierr = PetscObjectGetComm(obj,&comm);CHKERRQ(ierr); 65 ierr = MPI_Comm_size(comm,&size);CHKERRQ(ierr); 66 ierr = PetscViewerASCIIPrintf(viewer," %d MPI processes",size);CHKERRQ(ierr); 67 ierr = PetscViewerASCIIPrintf(viewer,"\n");CHKERRQ(ierr); 68 if (obj->type_name) { 69 ierr = PetscViewerASCIIPrintf(viewer," type: %s\n",obj->type_name);CHKERRQ(ierr); 70 } else { 71 ierr = PetscViewerASCIIPrintf(viewer," type not yet set\n");CHKERRQ(ierr); 72 } 73 PetscFunctionReturn(0); 74 } 75 76 #undef __FUNCT__ 77 #define __FUNCT__ "PetscObjectName" 78 /*@C 79 PetscObjectName - Gives an object a name if it does not have one 80 81 Not Collective 82 83 Input Parameters: 84 . obj - the Petsc variable 85 Thus must be cast with a (PetscObject), for example, 86 PetscObjectName((PetscObject)mat,name); 87 88 Level: developer 89 90 Concepts: object name^setting default 91 92 Notes: This is used in a small number of places when an object NEEDS a name, for example when it is saved to MATLAB with that variable name. 93 Use PetscObjectSetName() to set the name of an object to what you want. The AMS viewer requires that no two published objects 94 share the same name. 95 96 Developer Note: this needs to generate the exact same string on all ranks that share the object. The current algorithm may not always work. 97 98 99 100 .seealso: PetscObjectGetName(), PetscObjectSetName() 101 @*/ 102 PetscErrorCode PetscObjectName(PetscObject obj) 103 { 104 PetscErrorCode ierr; 105 PetscCommCounter *counter; 106 PetscMPIInt flg; 107 char name[64]; 108 109 PetscFunctionBegin; 110 PetscValidHeader(obj,1); 111 if (!obj->name) { 112 void *commp = 0; 113 ierr = MPI_Attr_get(obj->comm,Petsc_Counter_keyval,(void*)&counter,&flg);CHKERRQ(ierr); 114 if (!flg) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_ARG_CORRUPT,"Bad MPI communicator supplied; must be a PETSc communicator"); 115 ierr = PetscMemcpy(&commp,&obj->comm,PetscMin(sizeof(commp),sizeof(obj->comm)));CHKERRQ(ierr); 116 ierr = MPI_Bcast(&commp,1,MPIU_SIZE_T,0,obj->comm);CHKERRQ(ierr); 117 ierr = PetscSNPrintf(name,64,"%s_%p_%D",obj->class_name,commp,counter->namecount++);CHKERRQ(ierr); 118 ierr = PetscStrallocpy(name,&obj->name);CHKERRQ(ierr); 119 } 120 PetscFunctionReturn(0); 121 } 122 123 124 125 #undef __FUNCT__ 126 #define __FUNCT__ "PetscObjectChangeTypeName" 127 PetscErrorCode PetscObjectChangeTypeName(PetscObject obj,const char type_name[]) 128 { 129 PetscErrorCode ierr; 130 131 PetscFunctionBegin; 132 PetscValidHeader(obj,1); 133 ierr = PetscObjectTakeAccess(obj);CHKERRQ(ierr); 134 ierr = PetscFree(obj->type_name);CHKERRQ(ierr); 135 ierr = PetscStrallocpy(type_name,&obj->type_name);CHKERRQ(ierr); 136 ierr = PetscObjectGrantAccess(obj);CHKERRQ(ierr); 137 PetscFunctionReturn(0); 138 } 139 140