2: #ifndef PETSCBAG_H
  3: #define PETSCBAG_H

  5: #include <petscsys.h>

  7: /* SUBMANSEC = Sys */

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

 13:    Level: beginner

 15:     Sample Usage:
 16: .vb
 17:       typedef struct {
 18:          PetscInt     height;
 19:          PetscScalar  root;
 20:          PetscReal    byebye;
 21:       } MyParameters;

 23:       PetscBag     bag;
 24:       MyParameters *params;

 26:       PetscCall(PetscBagCreate(PETSC_COMM_WORLD,sizeof(MyParameters),&bag));
 27:       PetscCall(PetscBagGetData(bag,(void **)&params));
 28:       PetscCall(PetscBagSetName(bag,"MyParameters"));
 29:       PetscCall(PetscBagRegisterInt(bag,&params.height,22,"height","Height of the water tower"));
 30: .ve

 32: .seealso: `PetscBagSetName()`, `PetscBagGetName()`, `PetscBagView()`, `PetscBagLoad()`, `PetscBagGetData()`
 33:           `PetscBagRegisterReal()`, `PetscBagRegisterInt()`, `PetscBagRegisterBool()`, `PetscBagRegisterScalar()`
 34:           `PetscBagSetFromOptions()`, `PetscBagRegisterVec()`, `PetscBagCreate()`, `PetscBagDestroy()`, `PetscBagRegisterEnum()`
 35: S*/
 36: typedef struct _n_PetscBag     *PetscBag;
 37: typedef struct _n_PetscBagItem *PetscBagItem;

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

 54: PETSC_EXTERN PetscErrorCode PetscBagSetFromOptions(PetscBag);
 55: PETSC_EXTERN PetscErrorCode PetscBagGetName(PetscBag, char **);
 56: PETSC_EXTERN PetscErrorCode PetscBagSetName(PetscBag, const char *, const char *);
 57: PETSC_EXTERN PetscErrorCode PetscBagSetOptionsPrefix(PetscBag, const char *);

 59: PETSC_EXTERN PetscErrorCode PetscBagView(PetscBag, PetscViewer);
 60: PETSC_EXTERN PetscErrorCode PetscBagLoad(PetscViewer, PetscBag);
 61: PETSC_EXTERN PetscErrorCode PetscBagViewFromOptions(PetscBag, PetscObject, const char[]);

 63: PETSC_EXTERN PetscErrorCode PetscBagSetViewer(PetscBag, PetscErrorCode (*)(PetscBag, PetscViewer));
 64: PETSC_EXTERN PetscErrorCode PetscBagSetLoader(PetscBag, PetscErrorCode (*)(PetscBag, PetscViewer));
 65: PETSC_EXTERN PetscErrorCode PetscBagSetDestroy(PetscBag, PetscErrorCode (*)(PetscBag));

 67: #define PETSC_BAG_FILE_CLASSID 1211219

 69: #endif