4:  #include <petscsys.h>

  6: /*S
  7:      PetscBag - PETSc object that manages a collection of user data including parameters.
  8:            A bag is essentially a C struct with serialization (you can save it and load it from files).

 10:    Level: beginner

 12:     Sample Usage:
 13: $      typedef struct {
 14: $         PetscInt     height;
 15: $         PetscScalar  root;
 16: $         PetscReal    byebye;
 17: $      } MyParameters;
 18: $
 19: $      PetscBag     bag;
 20: $      MyParameters *params;
 21: $
 22: $      PetscBagCreate(PETSC_COMM_WORLD,sizeof(MyParameters),&bag);
 23: $      PetscBagGetData(bag,(void **)&params);
 24: $      PetscBagSetName(bag,"MyParameters");
 25: $      PetscBagRegisterInt(bag,&params.height,22,"height","Height of the water tower");
 26: $

 28: .seealso:  PetscBagSetName(), PetscBagGetName(), PetscBagView(), PetscBagLoad(), PetscBagGetData()
 29:            PetscBagRegisterReal(), PetscBagRegisterInt(), PetscBagRegisterBool(), PetscBagRegisterScalar()
 30:            PetscBagSetFromOptions(), PetscBagRegisterVec(), PetscBagCreate(), PetscBagDestroy(), PetscBagRegisterEnum()
 31: S*/
 32: typedef struct _n_PetscBag*     PetscBag;
 33: typedef struct _n_PetscBagItem* PetscBagItem;

 35: PETSC_EXTERN PetscErrorCode PetscBagCreate(MPI_Comm,size_t,PetscBag*);
 36: PETSC_EXTERN PetscErrorCode PetscBagDestroy(PetscBag*);
 37: PETSC_EXTERN PetscErrorCode PetscBagGetData(PetscBag,void **);
 38: PETSC_EXTERN PetscErrorCode PetscBagRegisterReal(PetscBag,void*,PetscReal, const char*, const char*);
 39: PETSC_EXTERN PetscErrorCode PetscBagRegisterRealArray(PetscBag,void*,PetscInt, const char*, const char*);
 40: PETSC_EXTERN PetscErrorCode PetscBagRegisterString(PetscBag,void*,PetscInt,const char*, const char*, const char*);
 41: PETSC_EXTERN PetscErrorCode PetscBagRegisterScalar(PetscBag,void*,PetscScalar,const  char*,const  char*);
 42: PETSC_EXTERN PetscErrorCode PetscBagRegisterInt(PetscBag,void*,PetscInt,const  char*,const  char*);
 43: PETSC_EXTERN PetscErrorCode PetscBagRegisterInt64(PetscBag,void*,PetscInt64,const  char*,const  char*);
 44: PETSC_EXTERN PetscErrorCode PetscBagRegisterIntArray(PetscBag,void*,PetscInt,const  char*,const  char*);
 45: PETSC_EXTERN PetscErrorCode PetscBagRegisterEnum(PetscBag,void*,const char*const*,PetscEnum,const char*,const  char*);
 46: PETSC_EXTERN PetscErrorCode PetscBagRegisterBool(PetscBag,void*,PetscBool ,const  char*,const  char*);
 47: PETSC_EXTERN PetscErrorCode PetscBagRegisterBoolArray(PetscBag,void*,PetscInt,const  char*,const  char*);
 48: PETSC_EXTERN PetscErrorCode PetscBagGetNames(PetscBag, const char *[]);

 50: PETSC_EXTERN PetscErrorCode PetscBagSetFromOptions(PetscBag);
 51: PETSC_EXTERN PetscErrorCode PetscBagGetName(PetscBag, char **);
 52: PETSC_EXTERN PetscErrorCode PetscBagSetName(PetscBag, const char *, const char *);
 53: PETSC_EXTERN PetscErrorCode PetscBagSetOptionsPrefix(PetscBag, const char *);

 55: PETSC_EXTERN PetscErrorCode PetscBagView(PetscBag,PetscViewer);
 56: PETSC_EXTERN PetscErrorCode PetscBagLoad(PetscViewer,PetscBag);

 58: PETSC_EXTERN PetscErrorCode PetscBagSetViewer(PetscBag,PetscErrorCode (*)(PetscBag,PetscViewer));
 59: PETSC_EXTERN PetscErrorCode PetscBagSetLoader(PetscBag,PetscErrorCode (*)(PetscBag,PetscViewer));
 60: PETSC_EXTERN PetscErrorCode PetscBagSetDestroy(PetscBag,PetscErrorCode (*)(PetscBag));

 62: #define PETSC_BAG_FILE_CLASSID 1211219

 64: #endif