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: H5Pget_fapl_direct_f

       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.