18.2.394. MPI_Type_get_attr
MPI_Type_get_attr - Returns the attribute associated with a data type.
18.2.394.1. SYNTAX
18.2.394.1.1. C Syntax
#include <mpi.h>
int MPI_Type_get_attr(MPI_Datatype type, int type_keyval, void *attribute_val, int *flag)
18.2.394.1.2. Fortran Syntax (see FORTRAN 77 NOTES)
USE MPI
! or the older form: INCLUDE 'mpif.h'
MPI_TYPE_GET_ATTR(TYPE, TYPE_KEYVAL, ATTRIBUTE_VAL, FLAG, IERROR)
INTEGER TYPE, TYPE_KEYVAL, IERROR
INTEGER(KIND=MPI_ADDRESS_KIND) ATTRIBUTE_VAL
LOGICAL FLAG
18.2.394.1.3. Fortran 2008 Syntax
USE mpi_f08
MPI_Type_get_attr(datatype, type_keyval, attribute_val, flag, ierror)
TYPE(MPI_Datatype), INTENT(IN) :: datatype
INTEGER, INTENT(IN) :: type_keyval
INTEGER(KIND=MPI_ADDRESS_KIND), INTENT(OUT) :: attribute_val
LOGICAL, INTENT(OUT) :: flag
INTEGER, OPTIONAL, INTENT(OUT) :: ierror
18.2.394.2. INPUT PARAMETERS
type
: Data type to which the attribute is attached (handle).type_keyval
: Key value (integer).
18.2.394.3. OUTPUT PARAMETERS
attribute_val
: Attribute value, unless flag = falseflag
: “false” if no attribute is associated with the key (logical).IERROR
: Fortran only: Error status (integer).
18.2.394.4. DESCRIPTION
For the given data type, MPI_Type_get_attr returns an attribute value that corresponds to the specified key value.
18.2.394.5. FORTRAN 77 NOTES
The MPI standard prescribes portable Fortran syntax for the ATTRIBUTE_VAL argument only for Fortran 90. Sun FORTRAN 77 users may use the non-portable syntax
INTEGER*MPI_ADDRESS_KIND ATTRIBUTE_VAL
where MPI_ADDRESS_KIND is a constant defined in mpif.h and gives the length of the declared integer in bytes.
18.2.394.6. ERRORS
Almost all MPI routines return an error value; C routines as the value of the function and Fortran routines in the last argument.
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.
See also