[svn-r19005] Purpose:

    Commit metadata tagging framework.

Description:

    This check-in contains a new framework whose goal is to apply
    a tag value to each new entry in the metadata cache as it is created. 
    This tag value is such that it relates each piece of metadata to the 
    HDF5 object that it belongs to (dataset, group, et cetera).

    This changeset includes the framework that applies the tags as 
    well as a suite of tests to verify correct tag application, though does
    not yet make use of the tag values to flush/evict individual objects.

    Please refer to the "flush/evict individual objects" RFC for further
    discussion of these changes.

Tested:

    jam, amani, linew (h5committest)
    liberty, abe, blue print

1 files changed, 7 insertions, 0 deletions

diff --git a/src/H5Gnode.c b/src/H5Gnode.c
index 793034a..ef38380 100644
--- a/src/H5Gnode.c
+++ b/src/H5Gnode.c
@@ -1306,10 +1306,17 @@ H5G_node_copy(H5F_t *f, hid_t dxpl_id, const void UNUSED *_lt_key, haddr_t addr,
         name = (const char *)H5HL_offset_into(heap, src_ent->name_off);
 	HDassert(name);
 
+        /* Set copied metadata tag */
+        H5_BEGIN_TAG(dxpl_id, H5AC__COPIED_TAG, H5_ITER_ERROR);
+
         /* Insert the new object in the destination file's group */
         /* (Don't increment the link count - that's already done above for hard links) */
         if(H5G_stab_insert_real(udata->dst_file, udata->dst_stab, name, &lnk, dxpl_id) < 0)
             HGOTO_ERROR(H5E_DATATYPE, H5E_CANTINIT, H5_ITER_ERROR, "unable to insert the name")
+
+        /* Reset metadata tag */
+        H5_END_TAG(H5_ITER_ERROR);
+
     } /* end of for (i=0; i<sn->nsyms; i++) */
 
 done: