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-rw-r--r--src/H5Sselect.c130
1 files changed, 113 insertions, 17 deletions
diff --git a/src/H5Sselect.c b/src/H5Sselect.c
index 65a66cb..97d2c32 100644
--- a/src/H5Sselect.c
+++ b/src/H5Sselect.c
@@ -2559,7 +2559,12 @@ H5S_select_project_intersection(const H5S_t *src_space, const H5S_t *dst_space,
const H5S_t *src_intersect_space, H5S_t **new_space_ptr,
hbool_t share_selection)
{
- H5S_t *new_space = NULL; /* New dataspace constructed */
+ H5S_t *new_space = NULL; /* New dataspace constructed */
+ H5S_t *tmp_src_intersect_space = NULL; /* Temporary SIS converted from points->hyperslabs */
+ H5S_sel_iter_t ss_iter; /* Selection iterator for src_space */
+ hbool_t ss_iter_init = FALSE; /* Whether ss_iter has been initialized */
+ H5S_sel_iter_t ds_iter; /* Selection iterator for dst_space */
+ hbool_t ds_iter_init = FALSE; /* Whether ds_iter has been initialized */
herr_t ret_value = SUCCEED; /* Return value */
FUNC_ENTER_NOAPI(FAIL)
@@ -2569,6 +2574,7 @@ H5S_select_project_intersection(const H5S_t *src_space, const H5S_t *dst_space,
HDassert(dst_space);
HDassert(src_intersect_space);
HDassert(new_space_ptr);
+ HDassert(H5S_GET_SELECT_NPOINTS(src_space) == H5S_GET_SELECT_NPOINTS(dst_space));
/* Create new space, using dst extent. Start with "all" selection. */
if(NULL == (new_space = H5S_create(H5S_SIMPLE)))
@@ -2578,7 +2584,7 @@ H5S_select_project_intersection(const H5S_t *src_space, const H5S_t *dst_space,
/* If the intersecting space is "all", the intersection must be equal to the
* source space and the projection must be equal to the destination space */
- if(src_intersect_space->select.type->type == H5S_SEL_ALL) {
+ if(H5S_GET_SELECT_TYPE(src_intersect_space) == H5S_SEL_ALL) {
/* Copy the destination selection. */
if(H5S_select_copy(new_space, dst_space, FALSE) < 0)
HGOTO_ERROR(H5E_DATASPACE, H5E_CANTCOPY, FAIL, "can't copy destination space selection")
@@ -2592,20 +2598,99 @@ H5S_select_project_intersection(const H5S_t *src_space, const H5S_t *dst_space,
if(H5S_select_none(new_space) < 0)
HGOTO_ERROR(H5E_DATASPACE, H5E_CANTDELETE, FAIL, "can't change selection")
} /* end if */
- /* If any of the spaces use point selection, fall back to general algorithm */
- else if((src_intersect_space->select.type->type == H5S_SEL_POINTS)
- || (src_space->select.type->type == H5S_SEL_POINTS)
- || (dst_space->select.type->type == H5S_SEL_POINTS))
- HGOTO_ERROR(H5E_DATASPACE, H5E_UNSUPPORTED, FAIL, "point selections not currently supported")
else {
- HDassert(src_intersect_space->select.type->type == H5S_SEL_HYPERSLABS);
- HDassert(src_space->select.type->type != H5S_SEL_NONE);
- HDassert(dst_space->select.type->type != H5S_SEL_NONE);
-
- /* Intersecting space is hyperslab selection. Call the hyperslab
- * routine to project to another hyperslab selection. */
- if(H5S__hyper_project_intersection(src_space, dst_space, src_intersect_space, new_space, share_selection) < 0)
- HGOTO_ERROR(H5E_DATASPACE, H5E_CANTCLIP, FAIL, "can't project hyperslab onto destination selection")
+ /* If the source intersect space is a point selection, convert it to a
+ * hyperslab (discarding ordering). We can get away with this because
+ * the order does not matter for the source intersect space */
+ /* Maybe we should just leave it as a point selection for the point by
+ * point algorithm? The search through the selection in
+ * H5S_SELECT_INTERSECT_BLOCK will likely be O(N) either way. -NAF */
+ if(H5S_GET_SELECT_TYPE(src_intersect_space) == H5S_SEL_POINTS) {
+ H5S_pnt_node_t *curr_pnt = src_intersect_space->select.sel_info.pnt_lst->head;
+
+ /* Create dataspace and copy extent */
+ if(NULL == (tmp_src_intersect_space = H5S_create(H5S_SIMPLE)))
+ HGOTO_ERROR(H5E_DATASPACE, H5E_CANTCREATE, FAIL, "unable to create temporary source intersect dataspace")
+ if(H5S__extent_copy_real(&tmp_src_intersect_space->extent, &src_intersect_space->extent, FALSE) < 0)
+ HGOTO_ERROR(H5E_DATASPACE, H5E_CANTCOPY, FAIL, "unable to copy source intersect space extent")
+
+ /* Iterate over points */
+ for(curr_pnt = src_intersect_space->select.sel_info.pnt_lst->head; curr_pnt; curr_pnt = curr_pnt->next)
+ /* Add point to hyperslab selection */
+ if(H5S_hyper_add_span_element(tmp_src_intersect_space, src_intersect_space->extent.rank, curr_pnt->pnt) < 0)
+ HGOTO_ERROR(H5E_DATASPACE, H5E_CANTSELECT, FAIL, "can't add point to temporary dataspace selection")
+
+ /* Redirect local src_intersect_space pointer (will not affect
+ * calling function) */
+ src_intersect_space = tmp_src_intersect_space;
+ } /* end for */
+
+ /* By this point, src_intersect_space must be a hyperslab selection */
+ HDassert(H5S_GET_SELECT_TYPE(src_intersect_space) == H5S_SEL_HYPERSLABS);
+
+ /* If either the source space or the destination space is a point
+ * selection, iterate element by element */
+ if((H5S_GET_SELECT_TYPE(src_space) == H5S_SEL_POINTS)
+ || (H5S_GET_SELECT_TYPE(dst_space) == H5S_SEL_POINTS)) {
+ hsize_t coords[H5S_MAX_RANK];
+ htri_t intersect;
+
+ /* Start with "none" selection */
+ if(H5S_select_none(new_space) < 0)
+ HGOTO_ERROR(H5E_DATASPACE, H5E_CANTDELETE, FAIL, "can't change selection")
+
+ /* Initialize iterators */
+ if(H5S_select_iter_init(&ss_iter, src_space, 1, H5S_SEL_ITER_SHARE_WITH_DATASPACE) < 0)
+ HGOTO_ERROR(H5E_DATASPACE, H5E_CANTINIT, FAIL, "can't initialize source space selection iterator")
+ ss_iter_init = TRUE;
+ if(H5S_select_iter_init(&ds_iter, dst_space, 1, H5S_SEL_ITER_SHARE_WITH_DATASPACE) < 0)
+ HGOTO_ERROR(H5E_DATASPACE, H5E_CANTINIT, FAIL, "can't initialize destination space selection iterator")
+ ds_iter_init = TRUE;
+
+ /* Iterate over points */
+ do {
+ HDassert(ss_iter.elmt_left > 0);
+ HDassert(ss_iter.elmt_left > 0);
+
+ /* Get SS coords */
+ if(H5S_SELECT_ITER_COORDS(&ss_iter, coords) < 0)
+ HGOTO_ERROR(H5E_DATASPACE, H5E_CANTGET, FAIL, "can't get source selection coordinates")
+
+ /* Check for intersection */
+ if((intersect = H5S_SELECT_INTERSECT_BLOCK(src_intersect_space, coords, coords)) < 0)
+ HGOTO_ERROR(H5E_DATASPACE, H5E_CANTCOMPARE, FAIL, "can't check for intersection")
+
+ /* Add point if it intersects */
+ if(intersect) {
+ /* Get DS coords */
+ if(H5S_SELECT_ITER_COORDS(&ds_iter, coords) < 0)
+ HGOTO_ERROR(H5E_DATASPACE, H5E_CANTGET, FAIL, "can't get destination selection coordinates")
+
+ /* Add point to new_space */
+ if(H5S_select_elements(new_space, H5S_SELECT_APPEND, 1, coords) < 0)
+ HGOTO_ERROR(H5E_DATASPACE, H5E_CANTSELECT, FAIL, "can't add point to new selection")
+ } /* end if */
+
+ /* Advance iterators */
+ if(H5S_SELECT_ITER_NEXT(&ss_iter, 1) < 0)
+ HGOTO_ERROR(H5E_DATASPACE, H5E_CANTNEXT, FAIL, "can't advacne source selection iterator")
+ ss_iter.elmt_left--;
+ if(H5S_SELECT_ITER_NEXT(&ds_iter, 1) < 0)
+ HGOTO_ERROR(H5E_DATASPACE, H5E_CANTNEXT, FAIL, "can't advacne destination selection iterator")
+ ds_iter.elmt_left--;
+ } while(ss_iter.elmt_left > 0);
+ HDassert(H5S_SELECT_ITER_NELMTS(&ds_iter) == 0);
+ } /* end if */
+ else {
+ HDassert(H5S_GET_SELECT_TYPE(src_space) != H5S_SEL_NONE);
+ HDassert(H5S_GET_SELECT_TYPE(dst_space) != H5S_SEL_NONE);
+
+ /* Source and destination selections are all or hyperslab,
+ * intersecting selection is hyperslab. Call the hyperslab routine
+ * to project to another hyperslab selection. */
+ if(H5S__hyper_project_intersection(src_space, dst_space, src_intersect_space, new_space, share_selection) < 0)
+ HGOTO_ERROR(H5E_DATASPACE, H5E_CANTCLIP, FAIL, "can't project hyperslab onto destination selection")
+ } /* end else */
} /* end else */
/* load the address of the new space into *new_space_ptr */
@@ -2617,6 +2702,14 @@ done:
if(new_space && H5S_close(new_space) < 0)
HDONE_ERROR(H5E_DATASPACE, H5E_CANTRELEASE, FAIL, "unable to release dataspace")
+ /* General cleanup */
+ if(tmp_src_intersect_space && H5S_close(tmp_src_intersect_space) < 0)
+ HDONE_ERROR(H5E_DATASPACE, H5E_CANTRELEASE, FAIL, "unable to release temporary dataspace")
+ if(ss_iter_init && H5S_SELECT_ITER_RELEASE(&ss_iter) < 0)
+ HDONE_ERROR(H5E_DATASPACE, H5E_CANTRELEASE, FAIL, "unable to release source selection iterator")
+ if(ds_iter_init && H5S_SELECT_ITER_RELEASE(&ds_iter) < 0)
+ HDONE_ERROR(H5E_DATASPACE, H5E_CANTRELEASE, FAIL, "unable to release destination selection iterator")
+
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5S_select_project_intersection() */
@@ -2628,8 +2721,7 @@ done:
PURPOSE
Projects the intersection of of the selections of src_space_id and
src_intersect_space_id within the selection of src_space_id as a
- selection within the selection of dst_space_id. Currently does not
- support point selections.
+ selection within the selection of dst_space_id.
USAGE
hid_t H5Sselect_project_intersection(src_space_id,dst_space_d,src_intersect_space_id)
@@ -2672,6 +2764,10 @@ H5Sselect_project_intersection(hid_t src_space_id, hid_t dst_space_id,
if(NULL == (src_intersect_space = (H5S_t *)H5I_object_verify(src_intersect_space_id, H5I_DATASPACE)))
HGOTO_ERROR(H5E_DATASPACE, H5E_BADTYPE, FAIL, "not a dataspace")
+ /* Check numbbers of points selected matches in source and destination */
+ if(H5S_GET_SELECT_NPOINTS(src_space) != H5S_GET_SELECT_NPOINTS(dst_space))
+ HGOTO_ERROR(H5E_DATASPACE, H5E_BADVALUE, FAIL, "number of points selected in source space does not match that in destination space")
+
/* Perform operation */
if(H5S_select_project_intersection(src_space, dst_space,
src_intersect_space, &proj_space, FALSE) < 0)