17.2.444. MPI_Win_get_attr
MPI_Win_get_attr - Obtains the value of a window attribute.
17.2.444.1. SYNTAX
17.2.444.1.1. C Syntax
#include <mpi.h>
int MPI_Win_get_attr(MPI_Win win, int win_keyval,
void *attribute_val, int *flag)
17.2.444.1.2. Fortran Syntax (see FORTRAN 77 NOTES)
USE MPI
! or the older form: INCLUDE 'mpif.h'
MPI_WIN_GET_ATTR(WIN, WIN_KEYVAL, ATTRIBUTE_VAL, FLAG, IERROR)
INTEGER WIN, WIN_KEYVAL, IERROR
INTEGER(KIND=MPI_ADDRESS_KIND) ATTRIBUTE_VAL
LOGICAL FLAG
17.2.444.1.3. Fortran 2008 Syntax
USE mpi_f08
MPI_Win_get_attr(win, win_keyval, attribute_val, flag, ierror)
TYPE(MPI_Win), INTENT(IN) :: win
INTEGER, INTENT(IN) :: win_keyval
INTEGER(KIND=MPI_ADDRESS_KIND), INTENT(OUT) :: attribute_val
LOGICAL, INTENT(OUT) :: flag
INTEGER, OPTIONAL, INTENT(OUT) :: ierror
17.2.444.2. INPUT PARAMETERS
win
: Window to which the attribute is attached (handle).win_keyval
: Key value (integer).
17.2.444.3. OUTPUT PARAMETERS
attribute_val
: Attribute value, unless ag = falseflag
: False if no attribute is associated with the key (logical).IERROR
: Fortran only: Error status (integer).
17.2.444.4. DESCRIPTION
Obtains the value of a window attribute.
17.2.444.5. FORTRAN 77 NOTES
The MPI standard prescribes portable Fortran syntax for the ATTRIBUTE_VAL argument only for Fortran 90. 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.
17.2.444.6. 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.