Name: H5Pget_fapl_direct
Signature:
herr_t H5Pget_fapl_direct( hid_t fapl_id, size_t *alignment, size_t *block_size, size_t *cbuf_size )

Purpose:
Retrieves direct I/O driver settings.

Description:
H5Pget_fapl_direct retrieves the required memory alignment (alignment), file system block size (block_size), and copy buffer size (cbuf_size) settings for the direct I/O driver, H5FD_DIRECT, from the file access property list fapl_id.

See H5Pset_fapl_direct for discussion of these values, requirements, and important considerations.

Parameters:
hid_t fapl_id IN: File access property list identifier
size_t *alignment OUT: Required memory alignment boundary
size_t *block_size     OUT: File system block size
size_t *cbuf_size OUT: Copy buffer size

Returns:
Returns a non-negative value if successful; otherwise returns a negative value.

Fortran90 Interface:
SUBROUTINE H5Pget_fapl_direct_f(fapl_id, alignment, block_size, cbuf_size, &
                                hdferr)
  IMPLICIT NONE  
  INTEGER(HID_T), INTENT(IN) :: fapl_id ! File access property list identifier
  INTEGER(SIZE_T), INTENT(OUT) :: alignment 	  
                                        ! Required memory alignment boundary!
  INTEGER(SIZE_T), INTENT(OUT) :: block_size     
                                        ! File system block size
  INTEGER(SIZE_T), INTENT(OUT) :: cbuf_size 	  
                                        ! Copy buffer size
  INTEGER, INTENT(OUT) :: hdferr        ! Error code
                                        ! 0 on success and -1 on failure
END SUBROUTINE H5Pget_fapl_direct_f
    

History:
Release     C
1.8.0 Function introduced in this release.