diff options
Diffstat (limited to 'src/H5Sall.c')
| -rw-r--r-- | src/H5Sall.c | 148 |
1 files changed, 74 insertions, 74 deletions
diff --git a/src/H5Sall.c b/src/H5Sall.c index 76181d1..0aa2f05 100644 --- a/src/H5Sall.c +++ b/src/H5Sall.c @@ -362,6 +362,80 @@ H5S__all_iter_next_block(H5S_sel_iter_t H5_ATTR_UNUSED *iter) /*-------------------------------------------------------------------------- NAME + H5S__all_get_seq_list + PURPOSE + Create a list of offsets & lengths for a selection + USAGE + herr_t H5S__all_get_seq_list(space,flags,iter,maxseq,maxelem,nseq,nelem,off,len) + H5S_t *space; IN: Dataspace containing selection to use. + unsigned flags; IN: Flags for extra information about operation + H5S_sel_iter_t *iter; IN/OUT: Selection iterator describing last + position of interest in selection. + size_t maxseq; IN: Maximum number of sequences to generate + size_t maxelem; IN: Maximum number of elements to include in the + generated sequences + size_t *nseq; OUT: Actual number of sequences generated + size_t *nelem; OUT: Actual number of elements in sequences generated + hsize_t *off; OUT: Array of offsets + size_t *len; OUT: Array of lengths + RETURNS + Non-negative on success/Negative on failure. + DESCRIPTION + Use the selection in the dataspace to generate a list of byte offsets and + lengths for the region(s) selected. Start/Restart from the position in the + ITER parameter. The number of sequences generated is limited by the MAXSEQ + parameter and the number of sequences actually generated is stored in the + NSEQ parameter. + GLOBAL VARIABLES + COMMENTS, BUGS, ASSUMPTIONS + EXAMPLES + REVISION LOG +--------------------------------------------------------------------------*/ +static herr_t +H5S__all_get_seq_list(const H5S_t H5_ATTR_UNUSED *space, unsigned H5_ATTR_UNUSED flags, H5S_sel_iter_t *iter, + size_t H5_ATTR_UNUSED maxseq, size_t maxelem, size_t *nseq, size_t *nelem, + hsize_t *off, size_t *len) +{ + size_t elem_used; /* The number of elements used */ + + FUNC_ENTER_STATIC_NOERR + + /* Check args */ + HDassert(space); + HDassert(iter); + HDassert(maxseq > 0); + HDassert(maxelem > 0); + HDassert(nseq); + HDassert(nelem); + HDassert(off); + HDassert(len); + + /* Determine the actual number of elements to use */ + H5_CHECK_OVERFLOW(iter->elmt_left, hsize_t, size_t); + elem_used = MIN(maxelem, (size_t)iter->elmt_left); + HDassert(elem_used > 0); + + /* Compute the offset in the dataset */ + off[0] = iter->u.all.byte_offset; + len[0] = elem_used * iter->elmt_size; + + /* Should only need one sequence for 'all' selections */ + *nseq = 1; + + /* Set the number of elements used */ + *nelem = elem_used; + + /* Update the iterator */ + iter->elmt_left -= elem_used; + iter->u.all.elmt_offset += elem_used; + iter->u.all.byte_offset += len[0]; + + FUNC_LEAVE_NOAPI(SUCCEED) +} /* end H5S__all_get_seq_list() */ + + +/*-------------------------------------------------------------------------- + NAME H5S__all_iter_release PURPOSE Release "all" selection iterator information for a dataspace @@ -993,77 +1067,3 @@ done: FUNC_LEAVE_API(ret_value) } /* end H5Sselect_all() */ - -/*-------------------------------------------------------------------------- - NAME - H5S__all_get_seq_list - PURPOSE - Create a list of offsets & lengths for a selection - USAGE - herr_t H5S__all_get_seq_list(space,flags,iter,maxseq,maxelem,nseq,nelem,off,len) - H5S_t *space; IN: Dataspace containing selection to use. - unsigned flags; IN: Flags for extra information about operation - H5S_sel_iter_t *iter; IN/OUT: Selection iterator describing last - position of interest in selection. - size_t maxseq; IN: Maximum number of sequences to generate - size_t maxelem; IN: Maximum number of elements to include in the - generated sequences - size_t *nseq; OUT: Actual number of sequences generated - size_t *nelem; OUT: Actual number of elements in sequences generated - hsize_t *off; OUT: Array of offsets - size_t *len; OUT: Array of lengths - RETURNS - Non-negative on success/Negative on failure. - DESCRIPTION - Use the selection in the dataspace to generate a list of byte offsets and - lengths for the region(s) selected. Start/Restart from the position in the - ITER parameter. The number of sequences generated is limited by the MAXSEQ - parameter and the number of sequences actually generated is stored in the - NSEQ parameter. - GLOBAL VARIABLES - COMMENTS, BUGS, ASSUMPTIONS - EXAMPLES - REVISION LOG ---------------------------------------------------------------------------*/ -static herr_t -H5S__all_get_seq_list(const H5S_t H5_ATTR_UNUSED *space, unsigned H5_ATTR_UNUSED flags, H5S_sel_iter_t *iter, - size_t H5_ATTR_UNUSED maxseq, size_t maxelem, size_t *nseq, size_t *nelem, - hsize_t *off, size_t *len) -{ - size_t elem_used; /* The number of elements used */ - - FUNC_ENTER_STATIC_NOERR - - /* Check args */ - HDassert(space); - HDassert(iter); - HDassert(maxseq > 0); - HDassert(maxelem > 0); - HDassert(nseq); - HDassert(nelem); - HDassert(off); - HDassert(len); - - /* Determine the actual number of elements to use */ - H5_CHECK_OVERFLOW(iter->elmt_left, hsize_t, size_t); - elem_used = MIN(maxelem, (size_t)iter->elmt_left); - HDassert(elem_used > 0); - - /* Compute the offset in the dataset */ - off[0] = iter->u.all.byte_offset; - len[0] = elem_used * iter->elmt_size; - - /* Should only need one sequence for 'all' selections */ - *nseq = 1; - - /* Set the number of elements used */ - *nelem = elem_used; - - /* Update the iterator */ - iter->elmt_left -= elem_used; - iter->u.all.elmt_offset += elem_used; - iter->u.all.byte_offset += len[0]; - - FUNC_LEAVE_NOAPI(SUCCEED) -} /* end H5S__all_get_seq_list() */ - |