SYNTAX
C Syntax
#include <mpi.h> int MPI_Type_delete_attr(MPI_Datatype type, int type_keyval)
Fortran Syntax
INCLUDE 'mpif.h'
MPI_TYPE_DELETE_ATTR(TYPE, TYPE_KEYVAL, IERROR)
INTEGER TYPE, TYPE_KEYVAL, IERROR
C++ Syntax
#include <mpi.h> void MPI::Datatype::Delete_attr(int type_keyval)
INPUT/OUTPUT PARAMETER
- type
-
Data type from which the attribute is deleted (handle).n
INPUT PARAMETER
- type_keyval
-
Key value (integer).
OUTPUT PARAMETER
- IERROR
-
Fortran only: Error status (integer).
DESCRIPTION
MPI_Type_delete_attr deletes a datatype-caching attribute value associated with a key. This routines partially replaces MPI_Attr_delete, which is now deprecated.
NOTES
Note that it is not defined by the MPI standard what happens if the delete_fn callback invokes other MPI functions. In Open MPI, it is not valid for delete_fn callbacks (or any of their children) to add or delete attributes on the same object on which the delete_fn callback is being invoked.
ERRORS
Almost all MPI routines return an error value; C routines as the value of the function and Fortran routines in the last argument. C++ functions do not return errors. If the default error handler is set to MPI::ERRORS_THROW_EXCEPTIONS, then on error the C++ exception mechanism will be used to throw an MPI::Exception object.Before the error value is returned, the current MPI error handler is called. By default, this error handler aborts the MPI job, except for I/O function errors. The error handler may be changed with MPI_Comm_set_errhandler; the predefined error handler MPI_ERRORS_RETURN may be used to cause error values to be returned. Note that MPI does not guarantee that an MPI program can continue past an error.