[svn-r14307] Description:

    - Extracted common code from H5D_select_read/H5D_select_write into single
        routine (H5D_select_io) and made H5D_select_read/H5D_select_write
        "gateway" routines, passing I/O buffer to operate on in "op" struct.
    - Create optimized pathway in H5D_select_io for I/O operations on single
        elements.
    - Make "get linear offset of first element" callback for each type of
        selection (used in "optimized pathway", above)

Tested on:
        FreeBSD/32 6.2 (duty) in debug mode
        FreeBSD/64 6.2 (liberty) w/C++ & FORTRAN, in debug mode
        Linux/32 2.6 (kagiso) w/PGI compilers, w/C++ & FORTRAN, w/threadsafe,
                                in debug mode
        Linux/64-amd64 2.6 (smirom) w/default API=1.6.x, w/C++ & FORTRAN,
                                in production mode
        Linux/64-ia64 2.6 (cobalt) w/Intel compilers, w/C++ & FORTRAN,
                                in production mode
        Solaris/32 2.10 (linew) w/deprecated symbols disabled, w/C++ & FORTRAN,
                                w/szip filter, in production mode
        Mac OS X/32 10.4.10 (amazon) in debug mode
        Linux/64-ia64 2.4 (tg-login3) w/parallel, w/FORTRAN, in production mode

1 files changed, 4 insertions, 1 deletions

diff --git a/src/H5Spkg.h b/src/H5Spkg.h
index 71cc43b..3fe2ac3 100644
--- a/src/H5Spkg.h
+++ b/src/H5Spkg.h
@@ -133,8 +133,10 @@ typedef hssize_t (*H5S_sel_serial_size_func_t)(const H5S_t *space);
 typedef herr_t (*H5S_sel_serialize_func_t)(const H5S_t *space, uint8_t *buf);
 /* Method to store create selection from "serialized" form (a byte sequence suitable for storing on disk) */
 typedef herr_t (*H5S_sel_deserialize_func_t)(H5S_t *space, const uint8_t *buf);
-/* Method to determine to smallest n-D bounding box containing the current selection */
+/* Method to determine smallest n-D bounding box containing the current selection */
 typedef herr_t (*H5S_sel_bounds_func_t)(const H5S_t *space, hsize_t *start, hsize_t *end);
+/* Method to determine linear offset of initial element in selection within dataspace */
+typedef herr_t (*H5S_sel_offset_func_t)(const H5S_t *space, hsize_t *offset);
 /* Method to determine if current selection is contiguous */
 typedef htri_t (*H5S_sel_is_contiguous_func_t)(const H5S_t *space);
 /* Method to determine if current selection is a single block */
@@ -159,6 +161,7 @@ typedef struct {
     H5S_sel_serialize_func_t serialize;         /* Method to store current selection in "serialized" form (a byte sequence suitable for storing on disk) */
     H5S_sel_deserialize_func_t deserialize;     /* Method to store create selection from "serialized" form (a byte sequence suitable for storing on disk) */
     H5S_sel_bounds_func_t bounds;               /* Method to determine to smallest n-D bounding box containing the current selection */
+    H5S_sel_offset_func_t offset;               /* Method to determine linear offset of initial element in selection within dataspace */
     H5S_sel_is_contiguous_func_t is_contiguous; /* Method to determine if current selection is contiguous */
     H5S_sel_is_single_func_t is_single;         /* Method to determine if current selection is a single block */
     H5S_sel_is_regular_func_t is_regular;       /* Method to determine if current selection is "regular" */