Code cleanup (sorta)
Description:
When the first versions of the HDF5 library were designed, I remembered
vividly the difficulties of porting code from a 32-bit platform to a 16-bit
platform and asked that people use intn & uintn instead of int & unsigned
int, respectively. However, in hindsight, this was overkill and
unnecessary since we weren't going to be porting the HDF5 library to
16-bit architectures.
Currently, the extra uintn & intn typedefs are causing problems for users
who'd like to include both the HDF5 and HDF4 header files in one source
module (like Kent's h4toh5 library).
Solution:
Changed the uintn & intn's to unsigned and int's respectively.
Platforms tested:
FreeBSD 4.4 (hawkwind)
New Features!
Description:
Start migrating the internal use of property lists in the library from the
older implementation to the new generic property lists.
Currently, only the dataset transfer property lists are migrated to the
new architecture, all the rest of the property list types are still using
the older architecture.
Also, the backward compatibility features are not implemented yet, so
applications which use dataset transfer properties may need to make the
following changes:
H5Pcreate(H5P_DATASET_XFER) -> H5Pcreate_list(H5P_DATASET_XFER_NEW)
and
H5Pclose(<a dataset transfer property list>) -> H5Pclose_list(id)
This still may have some bugs in it, especially with Fortran, but I should
be wrapping up those later today.
Platforms tested:
FreeBSD 4.4 (hawkwind)
Update
Description:
Changed
#include <hdf_file.h>
construct to
#include "hdf_file.h"
so that the GNU compiler can more easily pick up the dependencies
which it places in the .depend and Dependencies files. Also
regenerated the Dependencies to go along with this.
Platforms tested:
Linux
Bug fix (sort of)
Description:
The RCSID string in H5public.h was causing the C++ code problem as it
was included multiple times and C++ did not like multiple definitions
of the same static variable.
Solution:
Since we don't really make use of the RCSID strings as we have not
installed it in all source files, we decided to remove it.
Platforms tested:
eirene (linux), modi4 (IRIX64-64) both serial and parallel modes.
Code cleanup.
Description:
Fixed _lots_ (I mean _tons_) of warnings spit out by the gcc with the
extra warnings. Including a few show-stoppers for compression on IRIX
machines.
Solution:
Changed lots of variables' types to more sensible and consistent types,
more range-checking, more variable typecasts, etc.
Platforms tested:
FreeBSD 4.2 (hawkwind), IRIX64-64 (modi4)
Bug fixes
Description:
Fix two bugs:
- Datasets with vlen datatype which were created but not written to
were not being read back in correctly from the file.
- If an existing space conversion path was found for a conversion, it
was possible that the optimized read/write routines would be used
inappropriately.
Solution:
Patched vlen datatype conversion code to correctly handle zero-length
sequences.
Added a check to the space conversion code to make certain that the
optimized conversion routines are still appropriate when an existing
path is found.
Platforms tested:
FreeBSD 4.2 (hawkwind)
New Feature
Description:
Added array datatype to library. See documentation at:
http://hdf.ncsa.uiuc.edu/HDF5/planning/DP/ArrayType.html
for complete details on the impact to the library.
Solution:
Changes to the base library include removing the ability of compound
datatype fields to be an array (they can use an array type for the field,
to duplicate the functionality) and adding in the new array datatype
everywhere appropriate. (I hope :-)
Platforms tested:
FreeBSD 4.1.1 (hawkwind)
Maintainance & performance enhancements
Description:
Re-arranged header files to protect private symbols better.
Changed optimized regular hyperslab I/O to compute the offsets more
efficiently from previous method of using matrix operations.
Added sequential I/O operations at a more abstract level (at the same level
as H5F_arr_read/write), to support the optimized hyperslab I/O.
Platforms tested:
Solaris 2.6 (baldric) & FreeBSD 4.1.1 (hawkwind)
but I fixed lots of misc. compiler warnings in other code and also tracked down
the memory overwrite bug that was causing the development branch to core dump
on most machines.
final parameter (so that VL datatypes have a way to pass in the custom memory
allocation routines).
Fixed a conversion bug when VL fields were part of a compound datatype that
was causing the no-op conversion routine to be used instead of the vlen routine.
Added the H5Pset_vlen_mem_manager and H5Pget_vlen_mem_manager routines to
allow users to provide their own custom memory allocation routines for VL data
read in from the file and reclaimed with H5Dvlen_reclaim.
Finished coding on H5Dvlen_reclaim so it works now.
accessed with H5Tvlen_create, but I need to start writing tests now. Also the
more esoteric API calls (such as H5Tget_vlen_buf_size and the memory management
calls) aren't implemented yet.
