Description:
In some situations it was possible for the fill value to not be written to parts
of a chunked dataset, particularly when extending and/or shrinking. Prior to
the fix for the chunk cache (1015) these bugs would have been exceedingly rare.
Tested: jam, smirom, linew (h5committest)
Description:
The meaning of the "nbytes" field in H5D_rdcc_t was not clear, and some places
assumed it was the maximum size of the chunk cache, while some assumed it was
the current size of the chunk cache. The end result was that only 1 chunk could
be held in cache at a time. This field has been replaced by "nbytes_max" and
"nbytes_used". Performance of cached I/O should improve greatly.
Tested: jam, smirom (h5committest)
file handles.
Description:
An attribute's "oloc" field which specifies the file it resides in was located
in the attribute's "shared" structure. So when an attribute was opened multiple
times all of the handles for that attribute pointed to the same file id, even if
different file id's were used to open the different handles for the attribute.
The "oloc" has been moved to the top level H5A_t struct.
Tested: jam, smirom (h5committest)
Description:
Since the new object header format, it has been possible for a situation to be
created where none of the messages are large enough to hold a continuation
message and there are no null messages to merge with. This makes it impossible
to add a new object header chunk. This case will now be handled by moving every
message in the last chunk to the newly allocated one, except for null messages
which are deleted.
Tested: jam, smirom (h5committest)
Description:
When an attribute was created with a datatype or dataspace that was shared in
the same object header that the attribute was in, the attribute could not be
deleted. Changes made to ensure that the attribute can be deleted both when the
attribute is in the object header and when it is shared in the heap. Object
header message decode routines now take an "open_oh" parameter to enable them to
avoid opening the same object header twice.
Tested: jam, smirom (h5committest)
Description:
Attribute object copy routines have been moved from H5Oattr.c to H5Aint.c.
These routines are now shared between compact and densely stored attributes.
New routines written to support the copying of dense attributes. This patch wasmostly written by Peter Cao.
Tested: jam, smirom (h5committest)
Description: When attempting to copy an object with a message shared in its own
object header, the library attempts to protect the same object header twice.
Previously, it was possible for the object header to be protected with write
access in one or both of these protects, which would be illegal. The library
should now always protect with read only access in this case. The conditions
for fixing incorrect datatype versions have been made weaker to support this
change. The version will only be corrected if the object header the datatype
is in is modified.
Tested: jam, smirom (h5committest)
Description: H5Tset_order will now properly reject H5T_ORDER_NONE for most
datatypes. Previously this could cause major problems as the file could not be
flushed.
Tested: jam, smirom (h5committest)
Description:
If a compound type was packed except for some extra space at the end, H5Tpack
would not modify the type and the extra space would remain. Changed
H5T_is_packed to fix this behaviour.
Tested: jam, smirom (h5committest - linew down)
svn merge
Description:
merging revision 16290 from trunk to 1.8
(revision 16290 contains the code that maintains a min_clean_fraction
of the metadata cache in serial).
Tested:
smirom, jam
chunk size as the same size of the size of the hyperslab used to read the chunks.
The size of the hyperslabs are defined as the size of each dimension or a
predefined constant, whatever is smaller. This assures that the chunk
read fits in the chunk cache. (PVN - 2008/11/21)
- H5Dset_extent: when shrinking dimensions, some chunks were not deleted.
(PVN - 2009/01/8)
Description: Added H5Pset/get_elink_cb to allow the user to specify a callback
function to be called whenever an external link is traversed. Added
H5Pset/get_elink_acc_flags to allow the user to specify the file access flags
to use to open the target file of an external link. All these properties are set on a LAPL.
Tested: jam (trunk version tested with h5committest)
Bug Fix
Description:
Resolved issues with broken sanity checks that were failing when the 'b2'
debugging package was enabled (v2 b-tree debugging):
- Fixed outdated assertions that would not compile. They now compile
and function correctly.
- Removed too far outdated assertions that would require too much
unnecessary refactoring of code in order to satisfy their
initial purpose.
- Re-enabled b2 debugging package when "--enable-debug=all" is
specified on the configure line.
Tested:
jam, smirom, linew
Description: Fixes a problem in H5F_close_mounts where it wouldn't correctly
reshape the "child" array when unmounting files. Test added for this case.
Also fixed a potential bug in H5F_unmount where that routine reshapes the child
array. (Port to 1.8)
Tested: kagiso linew smirom (h5committest)
Description: H5Ovisit and H5Ovisit by name will now check for a positive return
value from the first callback. Test added for this case.
Tested: kagiso
