17.1. Deprecated since MPI-2.0

• The following function is deprecated and is superseded by MPI_COMM_CREATE_KEYVAL in MPI-2.0. The language independent definition of the deprecated function is the same as that of the new function, except for the function name and a different behavior in the C/Fortran language interoperability, see Section Attributes. The language bindings are modified.

  MPI_KEYVAL_CREATE(copy_fn, delete_fn, keyval, extra_state)
  IN copy_fn	Copy callback function for keyval
  IN delete_fn	Delete callback function for keyval
  OUT keyval	key value for future access (integer)
  IN extra_state	Extra state for callback functions

  int MPI_Keyval_create(MPI_Copy_function *copy_fn, MPI_Delete_function *delete_fn, int *keyval, void *extra_state)
  For this routine, an interface within the mpi_f08 module was never defined.
  Fortran binding
  MPI_KEYVAL_CREATE(COPY_FN, DELETE_FN, KEYVAL, EXTRA_STATE, IERROR)
  
  EXTERNAL COPY_FN, DELETE_FN
  INTEGER KEYVAL, EXTRA_STATE, IERROR
  

  The copy_fn function is invoked when a communicator is duplicated by MPI_COMM_DUP. copy_fn should be of type MPI_Copy_function, which is defined as follows:

  typedef int MPI_Copy_function(MPI_Comm oldcomm, int keyval, void *extra_state, void *attribute_val_in, void *attribute_val_out, int *flag);
  

  A Fortran declaration for such a function is as follows:

  For this routine, an interface within the mpi_f08 module was never defined.
  

  SUBROUTINE COPY_FUNCTION(OLDCOMM, KEYVAL, EXTRA_STATE, ATTRIBUTE_VAL_IN, ATTRIBUTE_VAL_OUT, FLAG, IERR)
  
  INTEGER OLDCOMM, KEYVAL, EXTRA_STATE, ATTRIBUTE_VAL_IN, ATTRIBUTE_VAL_OUT, IERR
  LOGICAL FLAG
  

  copy_fn may be specified as MPI_NULL_COPY_FN or MPI_DUP_FN from either C or Fortran; MPI_NULL_COPY_FN is a function that does nothing other than return flag = 0 and MPI_SUCCESS. MPI_DUP_FN is a simple-minded copy function that sets flag = 1, returns the value of attribute_val_in in attribute_val_out, and returns MPI_SUCCESS. Note that MPI_NULL_COPY_FN and MPI_DUP_FN are also deprecated.

  Analogous to copy_fn is a callback deletion function, defined as follows. The delete_fn function is invoked when a communicator is deleted by MPI_COMM_FREE or when a call is made explicitly to MPI_ATTR_DELETE. delete_fn should be of type MPI_Delete_function, which is defined as follows:

  typedef int MPI_Delete_function(MPI_Comm comm, int keyval, void *attribute_val, void *extra_state);
  

  A Fortran declaration for such a function is as follows:

  For this routine, an interface within the mpi_f08 module was never defined.
  

  SUBROUTINE DELETE_FUNCTION(COMM, KEYVAL, ATTRIBUTE_VAL, EXTRA_STATE, IERR)
  
  INTEGER COMM, KEYVAL, ATTRIBUTE_VAL, EXTRA_STATE, IERR
  

  delete_fn may be specified as MPI_NULL_DELETE_FN from either C or Fortran; MPI_NULL_DELETE_FN is a function that does nothing other than return MPI_SUCCESS. Note that MPI_NULL_DELETE_FN is also deprecated.

• The following function is deprecated and is superseded by MPI_COMM_FREE_KEYVAL in MPI-2.0. The language independent definition of the deprecated function is the same as the new function, except for the function name. The language bindings are modified.

  MPI_KEYVAL_FREE(keyval)
  INOUT keyval	Frees the integer key value (integer)

  C binding
  int MPI_Keyval_free(int *keyval)
  For this routine, an interface within the mpi_f08 module was never defined.
  Fortran binding
  MPI_KEYVAL_FREE(KEYVAL, IERROR)
  
  INTEGER KEYVAL, IERROR
  

• The following function is deprecated and is superseded by MPI_COMM_SET_ATTR in MPI-2.0. The language independent definition of the deprecated function is the same as the new function, except for the function name. The language bindings are modified.

  MPI_ATTR_PUT(comm, keyval, attribute_val)
  INOUT comm	communicator to which attribute will be attached (handle)
  IN keyval	key value, as returned by MPI_KEYVAL_CREATE (integer)
  IN attribute_val	attribute value

  C binding
  int MPI_Attr_put(MPI_Comm comm, int keyval, void *attribute_val)
  For this routine, an interface within the mpi_f08 module was never defined.
  Fortran binding
  MPI_ATTR_PUT(COMM, KEYVAL, ATTRIBUTE_VAL, IERROR)
  
  INTEGER COMM, KEYVAL, ATTRIBUTE_VAL, IERROR
  

• The following function is deprecated and is superseded by MPI_COMM_GET_ATTR in MPI-2.0. The language independent definition of the deprecated function is the same as the new function, except for the function name. The language bindings are modified.

  MPI_ATTR_GET(comm, keyval, attribute_val, flag)
  IN comm	communicator to which attribute is attached (handle)
  IN keyval	key value (integer)
  OUT attribute_val	attribute value, unless flag = false
  OUT flag	true if an attribute value was extracted; false if no attribute is associated with the key

  C binding
  int MPI_Attr_get(MPI_Comm comm, int keyval, void *attribute_val, int *flag)
  For this routine, an interface within the mpi_f08 module was never defined.
  Fortran binding
  MPI_ATTR_GET(COMM, KEYVAL, ATTRIBUTE_VAL, FLAG, IERROR)
  
  INTEGER COMM, KEYVAL, ATTRIBUTE_VAL, IERROR
  LOGICAL FLAG
  

• The following function is deprecated and is superseded by MPI_COMM_DELETE_ATTR in MPI-2.0. The language independent definition of the deprecated function is the same as the new function, except for the function name. The language bindings are modified.

  MPI_ATTR_DELETE(comm, keyval)
  INOUT comm	communicator to which attribute is attached (handle)
  IN keyval	The key value of the deleted attribute (integer)

  C binding
  int MPI_Attr_delete(MPI_Comm comm, int keyval)
  For this routine, an interface within the mpi_f08 module was never defined.
  Fortran binding
  MPI_ATTR_DELETE(COMM, KEYVAL, IERROR)
  
  INTEGER COMM, KEYVAL, IERROR