Date: 2025-03-29T05:58:46+00:00

Actual source code: ex5f90.F90

      1: #include <petsc/finclude/petscsys.h>
      2: #include <petsc/finclude/petscbag.h>
      3: #include <petsc/finclude/petscviewer.h>

      5:       module ex5f90module
      6:       use petscsys
      7:       use petscbag
      8: !     Data structure used to contain information about the problem
      9: !     You can add physical values etc here

     11:       type tuple
     12:          PetscReal:: x1,x2
     13:       end type tuple

     15:       type bag_data_type
     16:          PetscScalar :: x
     17:          PetscReal :: y
     18:          PetscInt  :: nxc
     19:          PetscReal :: rarray(3)
     20:          PetscBool  :: t
     21:          PetscBool  :: tarray(3)
     22:          PetscEnum :: enum
     23:          character*(80) :: c
     24:          type(tuple) :: pos
     25:       end type bag_data_type
     26:       end module ex5f90module

     28:       module ex5f90Bag_interface_module
     29:       use ex5f90module

     31:       interface PetscBagGetData
     32:          subroutine PetscBagGetData(bag,data,ierr)
     33:            use ex5f90module
     34:            PetscBag bag
     35:            type(bag_data_type),pointer :: data
     36:            PetscErrorCode ierr
     37:          end subroutine PetscBagGetData
     38:       end interface
     39:       end module ex5f90Bag_interface_module

     41:       program ex5f90
     42:       use ex5f90Bag_interface_module
     43:       use petsc
     44:       implicit none

     46:       PetscBag bag
     47:       PetscErrorCode ierr
     48:       type(bag_data_type), pointer :: data
     49:       type(bag_data_type)          :: dummydata
     50:       character(len=1),pointer     :: dummychar(:)
     51:       PetscViewer viewer
     52:       PetscSizeT sizeofbag
     53:       Character(len=99) list(6)
     54:       PetscInt three,int56
     55:       PetscReal value
     56:       PetscScalar svalue

     58:       PetscCallA(PetscInitialize(ierr))
     59:       list(1) = 'a123'
     60:       list(2) = 'b456'
     61:       list(3) = 'c789'
     62:       list(4) = 'list'
     63:       list(5) = 'prefix_'
     64:       list(6) = ''
     65: !     cannot just pass a 3 to PetscBagRegisterXXXArray() because it is expecting a PetscInt
     66:       three   = 3

     68: !   compute size of the data
     69: !
     70:       sizeofbag = size(transfer(dummydata,dummychar))

     72: ! create the bag
     73:       PetscCallA(PetscBagCreate(PETSC_COMM_WORLD,sizeofbag,bag,ierr))
     74:       PetscCallA(PetscBagGetData(bag,data,ierr))
     75:       PetscCallA(PetscBagSetName(bag,'demo parameters','super secret demo parameters in a bag',ierr))
     76:       PetscCallA(PetscBagSetOptionsPrefix(bag, 'pbag_', ierr))

     78: ! register the data within the bag, grabbing values from the options database
     79: !     Need to put the value into a variable for 64-bit indices
     80:       int56 = 56
     81:       PetscCallA(PetscBagRegisterInt(bag,data%nxc ,int56,'nxc','nxc_variable help message',ierr))
     82:       PetscCallA(PetscBagRegisterRealArray(bag,data%rarray,three,'rarray','rarray help message',ierr))
     83: !     Need to put the value into a variable to pass correctly for 128 bit quad precision numbers
     84:       svalue = 103.20
     85:       PetscCallA(PetscBagRegisterScalar(bag,data%x ,svalue,'x','x variable help message',ierr))
     86:       PetscCallA(PetscBagRegisterBool(bag,data%t ,PETSC_TRUE,'t','t boolean help message',ierr))
     87:       PetscCallA(PetscBagRegisterBoolArray(bag,data%tarray,three,'tarray','tarray help message',ierr))
     88:       PetscCallA(PetscBagRegisterString(bag,data%c,'hello','c','string help message',ierr))
     89:       value = -11.00
     90:       PetscCallA(PetscBagRegisterReal(bag,data%y ,value,'y','y variable help message',ierr))
     91:       value = 1.00
     92:       PetscCallA(PetscBagRegisterReal(bag,data%pos%x1 ,value,'pos_x1','tuple value 1 help message',ierr))
     93:       value = 2.00
     94:       PetscCallA(PetscBagRegisterReal(bag,data%pos%x2 ,value,'pos_x2','tuple value 2 help message',ierr))
     95:       PetscCallA(PetscBagRegisterEnum(bag,data%enum ,list,1,'enum','tuple value 2 help message',ierr))
     96:       PetscCallA(PetscBagView(bag,PETSC_VIEWER_STDOUT_WORLD,ierr))

     98:       data%nxc = 23
     99:       data%rarray(1) = -1.0
    100:       data%rarray(2) = -2.0
    101:       data%rarray(3) = -3.0
    102:       data%x   = 155.4
    103:       data%c   = 'a whole new string'
    104:       data%t   = PETSC_TRUE
    105:       data%tarray   = (/PETSC_TRUE,PETSC_FALSE,PETSC_TRUE/)
    106:       PetscCallA(PetscBagView(bag,PETSC_VIEWER_BINARY_WORLD,ierr))

    108:       PetscCallA(PetscViewerBinaryOpen(PETSC_COMM_WORLD,'binaryoutput',FILE_MODE_READ,viewer,ierr))
    109:       PetscCallA(PetscBagLoad(viewer,bag,ierr))
    110:       PetscCallA(PetscViewerDestroy(viewer,ierr))
    111:       PetscCallA(PetscBagView(bag,PETSC_VIEWER_STDOUT_WORLD,ierr))

    113:       PetscCallA(PetscBagSetFromOptions(bag,ierr))
    114:       PetscCallA(PetscBagView(bag,PETSC_VIEWER_STDOUT_WORLD,ierr))
    115:       PetscCallA(PetscBagDestroy(bag,ierr))

    117:       PetscCallA(PetscFinalize(ierr))
    118:       end program ex5f90

    120: !
    121: !/*TEST
    122: !
    123: !   build:
    124: !      requires: defined(PETSC_USING_F2003) defined(PETSC_USING_F90FREEFORM)
    125: !
    126: !   test:
    127: !      args: -pbag_rarray 4,5,88
    128: !
    129: !TEST*/