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

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

  9:       type tuple
 10:          PetscReal:: x1,x2
 11:       end type tuple

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

 26:       module ex5f90Bag_interface_module
 27:       use ex5f90module

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

 39:       program ex5f90
 40:       use ex5f90Bag_interface_module
 41:       use petsc
 42:       implicit none

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

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

 66: !   compute size of the data
 67: !
 68:       sizeofbag = size(transfer(dummydata,dummychar))

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

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

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

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

111:       PetscCallA(PetscBagSetFromOptions(bag,ierr))
112:       PetscCallA(PetscBagView(bag,PETSC_VIEWER_STDOUT_WORLD,ierr))
113:       PetscCallA(PetscBagDestroy(bag,ierr))

115:       PetscCallA(PetscFinalize(ierr))
116:       end program ex5f90

118: !
119: !/*TEST
120: !
121: !   build:
122: !      requires: defined(PETSC_USING_F2003) defined(PETSC_USING_F90FREEFORM)
123: !
124: !   test:
125: !      args: -pbag_rarray 4,5,88
126: !
127: !TEST*/