[svn-r6942] Purpose:

    Performance improment

Description:
    Speed up chunked dataset I/O.  This breaks down into several areas:
        - Compute chunk selections in the file by using hyperslab operations
            instead of iterating over each element in the selection.
        - If the file and memory selections are the same shape, use the file
            chunk selections to compute the memory chunk selections.

    This required several additional dataspace, dataspace selection and
        hyperslab routines.

Platforms tested:
    h5committestted (although Fortran tests failed for some reason)

1 files changed, 11 insertions, 2 deletions

diff --git a/src/H5Sprivate.h b/src/H5Sprivate.h
index 5792e67..4e6eda7 100644
--- a/src/H5Sprivate.h
+++ b/src/H5Sprivate.h
@@ -168,6 +168,7 @@ H5_DLL herr_t H5S_append(H5F_t *f, hid_t dxpl_id, struct H5O_t *oh, const H5S_t
 H5_DLL H5S_t *H5S_read(struct H5G_entry_t *ent, hid_t dxpl_id);
 H5_DLL int H5S_extend(H5S_t *space, const hsize_t *size);
 H5_DLL int H5S_set_extent(H5S_t *space, const hsize_t *size);
+H5_DLL herr_t H5S_set_extent_real(H5S_t *space, const hsize_t *size);
 H5_DLL H5S_t *H5S_create_simple(unsigned rank, const hsize_t dims[/*rank*/],
 		  const hsize_t maxdims[/*rank*/]);
 H5_DLL herr_t H5S_debug(H5F_t *f, hid_t dxpl_id, const void *_mesg, FILE *stream,
@@ -204,14 +205,22 @@ H5_DLL herr_t H5S_select_write(H5F_t *f, struct H5O_layout_t *layout,
         const void *buf/*out*/);
 H5_DLL htri_t H5S_select_valid(const H5S_t *space);
 H5_DLL hssize_t H5S_get_select_npoints(const H5S_t *space);
+H5_DLL herr_t H5S_get_select_bounds(const H5S_t *space, hsize_t *start, hsize_t *end);
+H5_DLL herr_t H5S_select_offset(H5S_t *space, const hssize_t *offset);
+H5_DLL herr_t H5S_select_release(H5S_t *ds);
 H5_DLL herr_t H5S_select_all(H5S_t *space, unsigned rel_prev);
 H5_DLL herr_t H5S_select_none(H5S_t *space);
 H5_DLL herr_t H5S_select_hyperslab (H5S_t *space, H5S_seloper_t op, const hssize_t start[],
-                const hsize_t *stride, const hsize_t count[],
-                const hsize_t *block);
+    const hsize_t *stride, const hsize_t count[], const hsize_t *block);
+H5_DLL herr_t H5S_get_select_hyper_blocklist(H5S_t *space, hsize_t startblock,
+    hsize_t numblocks, hsize_t *buf);
 H5_DLL herr_t H5S_hyper_add_span_element(H5S_t *space, unsigned rank,
     hssize_t *coords);
 H5_DLL herr_t H5S_hyper_reset_scratch(H5S_t *space);
+H5_DLL herr_t H5S_hyper_convert(H5S_t *space);
+H5_DLL htri_t H5S_hyper_intersect (H5S_t *space1, H5S_t *space2);
+H5_DLL herr_t H5S_hyper_adjust(H5S_t *space, const hssize_t *offset);
+H5_DLL herr_t H5S_hyper_move(H5S_t *space, const hssize_t *offset);
 
 /* Operations on selection iterators */
 H5_DLL herr_t H5S_select_iter_init(H5S_sel_iter_t *iter, const H5S_t *space, size_t elmt_size);