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* [svn-r6387] Purpose:Quincey Koziol2003-02-101-5/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | Bug Fix Description: Metadata cache in parallel I/O can cause hangs in applications which perform independent I/O on chunked datasets, because the metadata cache can attempt to flush out dirty metadata from only a single process, instead of collectively from all processes. Solution: Pass a dataset transfer property list down from every API function which could possibly trigger metadata I/O. Then, split the metadata cache into two sets of entries to allow dirty metadata to be set aside when a hash table collision occurs during independent I/O. Platforms tested: Tested h5committest {arabica (fortran), eirene (fortran, C++) modi4 (parallel, fortran)} FreeBSD 4.7 (sleipnir) serial & parallel Misc. update: Updated release_docs/RELEASE
* [svn-r6375] Raymond Lu2003-02-041-0/+8
| | | | | | | | | | | Purpose: New feature Description: Added Adler32 checksum as a filter in pipeline Platforms tested: arabica (fortran), eirene (, C++), modi4 (parallel, fortran) Misc. update: Update release_docs/RELEASE.
* [svn-r6252] Purpose:Quincey Koziol2003-01-091-28/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Lots of performance improvements & a couple new internal API interfaces. Description: Performance Improvements: - Cached file offset & length sizes in shared file struct, to avoid constantly looking them up in the FCPL. - Generic property improvements: - Added "revision" number to generic property classes to speed up comparisons. - Changed method of storing properties from using a hash-table to the TBBT routines in the library. - Share the propery names between classes and the lists derived from them. - Removed redundant 'def_value' buffer from each property. - Switching code to use a "copy on write" strategy for properties in each list, where the properties in each list are shared with the properties in the class, until a property's value is changed in a list. - Fixed error in layout code which was allocating too many buffers. - Redefined public macros of the form (H5open()/H5check, <variable>) internally to only be (<variable>), avoiding innumerable useless calls to H5open() and H5check_version(). - Reuse already zeroed buffers in H5F_contig_fill instead of constantly re-zeroing them. - Don't write fill values if writing entire dataset. - Use gettimeofday() system call instead of time() system when checking the modification time of a dataset. - Added reference counted string API and use it for tracking the names of objects opening in a file (for the ID->name code). - Removed redundant H5P_get() calls in B-tree routines. - Redefine H5T datatype macros internally to the library, to avoid calling H5check redundantly. - Keep dataspace information for dataset locally instead of reading from disk each time. Added new module to track open objects in a file, to allow this (which will be useful eventually for some FPH5 metadata caching issues). - Remove H5AC_find macro which was inlining metadata cache lookups, and call function instead. - Remove redundant memset() calls from H5G_namei() routine. - Remove redundant checking of object type when locating objects in metadata cache and rely on the address only. - Create default dataset object to use when default dataset creation property list is used to create datasets, bypassing querying for all the property list values. - Use default I/O vector size when performing raw data with the default dataset transfer property list, instead of querying for I/O vector size. - Remove H5P_DEFAULT internally to the library, replacing it with more specific default property list based on the type of property list needed. - Remove redundant memset() calls in object header message (H5O*) routines. - Remove redunant memset() calls in data I/O routines. - Split free-list allocation routines into malloc() and calloc()- like routines, instead of one combined routine. - Remove lots of indirection in H5O*() routines. - Simplify metadata cache entry comparison routine (used when flushing entire cache out). - Only enable metadata cache statistics when H5AC_DEBUG is turned on, instead of always tracking them. - Simplify address comparison macro (H5F_addr_eq). - Remove redundant metadata cache entry protections during dataset creation by protecting the object header once and making all the modifications necessary for the dataset creation before unprotecting it. - Reduce # of "number of element in extent" computations performed by computing and storing the value during dataspace creation. - Simplify checking for group location's file information, when file has not been involving in file-mounting operations. - Use binary encoding for modification time, instead of ASCII. - Hoist H5HL_peek calls (to get information in a local heap) out of loops in many group routine. - Use static variable for iterators of selections, instead of dynamically allocation them each time. - Lookup & insert new entries in one step, avoiding traversing group's B-tree twice. - Fixed memory leak in H5Gget_objname_idx() routine (tangential to performance improvements, but fixed along the way). - Use free-list for reference counted strings. - Don't bother copying object names into cached group entries, since they are re-created when an object is opened. The benchmark I used to measure these results created several thousand small (2K) datasets in a file and wrote out the data for them. This is Elena's "regular.c" benchmark. These changes resulted in approximately ~4.3x speedup of the development branch when compared to the previous code in the development branch and ~1.4x speedup compared to the release branch. Additionally, these changes reduce the total memory used (code and data) by the development branch by ~800KB, bringing the development branch back into the same ballpark as the release branch. I'll send out a more detailed description of the benchmark results as a followup note. New internal API routines: Added "reference counted strings" API for tracking strings that get used by multiple owners without duplicating the strings. Added "ternary search tree" API for text->object mappings. Platforms tested: Tested h5committest {arabica (fortran), eirene (fortran, C++) modi4 (parallel, fortran)} Other platforms/configurations tested? FreeBSD 4.7 (sleipnir) serial & parallel Solaris 2.6 (baldric) serial
* [svn-r6072] Purpose:Bill Wendling2002-11-111-1/+9
| | | | | | | | | | Code Movement Description: Moved definition of the H5D_t data structure into the H5Dprivate.h header file. With the FPHDF5 stuff, we need access to this data structure. Platforms tested: Eirene...change small, so no need for all three tests.
* [svn-r6062] Raymond Lu2002-11-071-0/+1
| | | | | | | | | | | | Purpose: New function. Description: H5Dget_offset returns the offset of a dataset's data relative to the beginning of a file. Platforms tested: arabica(simple function, one test should be enough.) Misc. update: RELEASE.txt
* [svn-r6057] Purpose:Bill Wendling2002-11-051-0/+9
| | | | | | | | | | | | | | | | | | | | | | | New Feature. Support for new FPHDF5 Feature Description: More support for the FPHDF5 feature. This splits the H5D_create function into separate parts which update the metadata cache. It was necessary to split apart the H5O_create function to do a similar thing since it would allocate real space on the hard disk. I'm checking this up now so that I don't get too far away from what the CVS repository has and so that others may look at the code and retch^H^H^H^H^Hmarvel at it. If there are any comments, send them my way. There is one outstanding issue, though. I need to use non-API functions in the FPHDF5 stuff. I'm using some APIs right now and should migrate to using others. At the moment, I'm putting that on the back burner until I'm more along in the implementation. Platforms tested: Arabica (C++) Eirene (Parallel) Modi4 (Parallel)
* [svn-r5959] Raymond Lu2002-10-041-1/+1
| | | | | | | Purpose: Performance improvement for compact dataset. Platforms tested: Linux 2.2(eirene), Solaris 2.7(arabica), IRIX64 6.5(modi4)
* [svn-r5931] MuQun Yang2002-09-201-23/+23
| | | | | | | | | | | | Purpose: __DLL__ is a keyword in some platforms and __DLL__ is also defined as a macro for windows DLL applications. That causes problems. Description: Solution: Use H5_DLL*** to replace __DLL***__ at all header files. Change the macro defination at H5api_adpt.h. Platforms tested: linux2.2.18smp, irix64, solaris 2.7 and windows 2000
* [svn-r5926] Purpose:Quincey Koziol2002-09-131-3/+3
| | | | | | | | | | | | | API name change Description: Change all "space time" references to "alloc time", including API functions and macro definitions, etc. Platforms tested: FreeBSD 4.6 (sleipnir) w/C++ Solaris 2.7 (arabica) w/FORTRAN IRIX64 6.5 (modi4) w/parallel & FORTRAN
* [svn-r5894] Purpose:Quincey Koziol2002-08-271-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Bug fix/Code cleanup/New Feature Description: Correct problems with writing fill-values to external storage and allocate the data storage at the correct times. Also, mostly straighten out the strange code which allocates and fills raw data storage for datasets. Things are still a bit odd in that the fill-values for chunked datasets are written when the space is allocated, instead of in a separate routine, but there are two reasons for this: it's inefficient (especially in parallel) to iterate through all the chunks twice, and (more importantly) the space needed to store compressed chunks isn't known until we've got a buffer of compressed fill-values ready to write to the chunk. Additionally, add in the H5D_SPACE_ALLOC_INCR and H5D_SPACE_ALLOC_DEFAULT setting for the "space time", which incorporate the previous behavior of the space allocation for chunked datasets. The default settings for the different types of dataset storage are now as follows: Contiguous - Late Chunked - Incremental Compact - Early This checkin also incorporates a change to the behavior of external data storage in two ways - fill-values are _never_ written to external storage (under the assumption that writing fill-values is triggered by allocating space in an HDF5 file, and since space is not allocated in the file, the fill-values should not be written) and external data files are now created if they don't exist when data is written to them. The fill-value will probably need to be revisited at some time in the future, this just seemed like the safer course currently. I think I cleaned up some compiler errors also, before getting bogged down in the fixes for the space allocation and fill-values. Platforms tested: FreeBSD 4.6 (sleipnir) w/serial & parallel. Will be testing on IRIX64 6.5 (modi4) in serial & parallel shortly.
* [svn-r5879] Raymond Lu2002-08-201-1/+2
| | | | | | | | | Purpose: Design for compact dataset Description: Compact dataset is stored in the header message for dataset layout. Platforms tested: arabica, eirene.
* [svn-r5670] Purpose:Quincey Koziol2002-06-191-6/+0
| | | | | | | | | | | Code cleanup Description: Remove "COALESCE_READS" ifdefs, which were brought in by the DPSS VFL driver and are no longer used. Platforms tested: IRIX64 6.5 (modi4) w/parallel
* [svn-r5324] Pedro Vicente Nunes2002-05-021-1/+0
| | | | | | | Purpose: updated some comments regarding Code Warrior , removed other debugging comments Platforms tested: w2000
* [svn-r5170] Raymond Lu2002-04-111-2/+11
| | | | | | | | | | | Purpose: New feature Description: Fill-value's behaviors for contiguous dataset have been redefined. Basicly, dataset won't allocate space until it's necessary. Full details are available at http://hdf.ncsa.uiuc.edu/RFC/Fill_Value, at this moment. Platforms tested: Linux 2.2.
* [svn-r5168] Pedro Vicente Nunes2002-04-111-1/+3
| | | | | | | | | | | | | | | | | | | | | | Purpose: H5Dset_extent API function Description: 1 new public function: H5Dset_extent, that allows shrinking a dataset several private functions that free the previously allocated chunks H5F_istore_prune_by_extent, H5B_prune_by_extent : removes the chunks H5F_istore_initialize_by_extent : initializes them with the fill value H5S_select_fill is used to fill the selection in the memory buffer Platforms tested: Windows 2000 SUN( arabica) LINUX (eirene) IRIX64 (modi4)
* [svn-r4921] Pedro Vicente Nunes2002-02-071-0/+1
| | | | | | | | | | | | | Description: modified the below files to inlude a new public function H5Dset_extend, similar to H5Dextend, but it can lower the dimension this function requires 2 more new private functions: H5D_set_extend H5S_set_extend Platforms tested:
* [svn-r4680] Purpose:Quincey Koziol2001-12-061-4/+2
| | | | | | | | | | | | | Code cleanup Description: Property that H5P(g|s)et_hyper_cache uses is no longer in use inside the library. Solution: Removed H5P(g|s)et_hyper_cache API functions, except when backward compatibility is turned on. When backward compatibility is turned on, the property is defined by the library, but unused internally. Platforms tested: FreeBSD 4.4 (sleipnir)
* [svn-r4643] Purpose:Quincey Koziol2001-11-271-1/+1
| | | | | | | | | | | | | | | | | | | | | | Code cleanup Description: Windows is generating hundreds of warnings from some of the practices in the library. Mostly, they are because size_t is 32-bit and hsize_t is 64-bit on Windows and we were carelessly casting the larger values down to the smaller ones without checking for overflow. Also, some other small code cleanups,etc. Solution: Re-worked some algorithms to eliminate the casts and also added more overflow checking for assignments and function parameters which needed casts. Kent did most of the work, I just went over his changes and fit them into the the library code a bit better. Platforms tested: FreeBSD 4.4 (hawkwind)
* [svn-r4517] Raymond Lu2001-10-031-17/+37
| | | | | | | | Purpose: Changed to the new generic property list for dataset creation property list. Platforms tested: Arabica, modi4 and Hawkwind
* [svn-r4355] Purpose:Quincey Koziol2001-08-141-5/+5
| | | | | | | | | | | | | | | | | | | | | | 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)
* [svn-r4329] Purpose:Quincey Koziol2001-08-121-1/+1
| | | | | | | | | | | | | | Bug Fix Description: The datatype conversion buffer size was only halfway converted from hsize_t to size_t and was causing problems. Also, the H5P_peek_<foo> routines have a bunch of identical code. Solution: Finished converting the datatype conversion buffer size to size_t and cleaned up the implementation of the H5P_peek_<foo> routines to call a common routine instead of reimplementing a bunch of code. Platforms tested: Solaris 2.7 (arabica)
* [svn-r4324] Purpose:Quincey Koziol2001-08-101-20/+72
| | | | | | | | | | | | | | | | | | | | | | | | 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)
* [svn-r4181] Purpose:Quincey Koziol2001-07-101-8/+8
| | | | | | | | | Bug Fix, Code Cleanup, Code Optimization, etc. Description: Fold in the hyperslab speedups, clean up compile warnings and change a few things from using 'unsigned' or 'hsize_t' to use 'size_t' instead. Platforms tested: FreeBSD 4.3 (hawkwind), Solaris 2.7 (arabica), Irix64 6.5 (modi4)
* [svn-r3781] Purpose:Bill Wendling2001-04-051-8/+8
| | | | | | | | | | | | | | | | | | 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
* [svn-r3252] Purpose:Quincey Koziol2001-01-091-5/+5
| | | | | | | | | | | | | 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)
* [svn-r2652] Purpose:Quincey Koziol2000-10-101-0/+24
| | | | | | | | | | | | | | | 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)
* [svn-r2444] Checkpoint the Generic Property implementation. It's not active ↵Quincey Koziol2000-07-251-0/+1
| | | | | | yet, but it's close. This shouldn't interfere with other development work. (I think.. :-)
* [svn-r1576] Added H5Dvlen_get_buf_size function.Quincey Koziol1999-08-191-0/+2
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* [svn-r1568] Changes since 19990730Robb Matzke1999-08-101-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | ---------------------- This extensive change is the virtual file layer implementation. I've ported and tested the sec2, family, and core drivers and only ported the mpio driver (Albert will test it). So if you need MPIO I would recommend sticking with the previous version for a while. You will get a few compile warnings about split and stdio drivers not being implemented and possibly tracing information not inserted in some of the drivers. You can safely ignore them but I plan to fix them. I'm still working on the split driver because I just realized that it needs a part of the VFL that isn't written yet. Documentation is being updated also because there were some minor changes (mostly just name changes). It should be available on my web site later this week. ./MANIFEST ./src/Makefile.in ./src/hdf5.h ./src/H5Flow.c [REMOVED] ./src/H5Fstdio.c [REMOVED] ./src/H5Fsec2.c [REMOVED] ./src/H5Fsplit.c [REMOVED] ./src/H5Fmpio.c [REMOVED] ./src/H5Ffamily.c [REMOVED] ./src/H5Fcore.c [REMOVED] ./src/H5MFpublic.h [REMOVED] ./src/H5FD.c [NEW] ./src/H5FDcore.c [NEW] ./src/H5FDcore.h [NEW] ./src/H5FDfamily.c [NEW] ./src/H5FDfamily.h [NEW] ./src/H5FDmpio.c [NEW] ./src/H5FDmpio.h [NEW] ./src/H5FDprivate.h [NEW] ./src/H5FDpublic.h [NEW] ./src/H5FDsec2.c [NEW] ./src/H5FDsec2.h [NEW] Removed/added files for virtual file layer. ./bin/trace ./src/H5.c Removed unused public datatypes and added new VFL public datatypes. Changed an error message. ./config/BlankForm ./config/dec-flags ./config/gnu-flags ./config/hpux10.20 ./config/hpux9.03 ./config/irix5.x ./config/irix6.x ./config/solaris2.x ./config/unicosmk Removed the H5F_OPT_SEEK and H5F_LOW_DFLT constants from the configuration since they're no longer applicable. The default file driver is always the sec2 driver and it always optimizes calls to lseek() or lseek64(). ./config/depend.in C preprocessor errors generated during automatic dependency building are sent to /dev/null to prevent them from appearing twice in the make output. ./src/H5AC.c ./src/H5B.c ./src/H5D.c ./src/H5F.c ./src/H5G.c ./src/H5Gent.c ./src/H5Gnode.c ./src/H5HG.c ./src/H5HL.c ./src/H5O.c ./src/H5Oattr.c ./src/H5Odtype.c ./src/H5Oefl.c ./src/H5Oshared.c ./src/H5T.c ./src/H5detect.c ./test/ohdr.c Changed H5F_ADDR_UNDEF to HADDR_UNDEF to be more consistent with the `haddr_t' datatype which is now a public type. ./src/H5D.c ./src/H5P.c ./src/H5Ppublic.h ./src/H5Tconv.c ./test/cmpd_dset.c ./test/dsets.c ./test/overhead.c ./test/tselect.c ./test/tvltypes.c The H5P_DATASET_XFER constant was changed to H5P_DATA_XFER because the properties apply to all types of I/O operations, not just datasets. ./src/H5B.c ./src/H5Bprivate.h ./src/H5D.c ./src/H5Dpublic.h ./src/H5F.c ./src/H5Farray.c ./src/H5Fistore.c ./src/H5Fprivate.h ./src/H5Fpublic.h ./src/H5Gnode.c ./src/H5Gpkg.h ./src/H5HG.c ./src/H5HL.c ./src/H5O.c ./src/H5R.c ./src/H5Sall.c ./src/H5Shyper.c ./src/H5Smpio.c ./src/H5Spoint.c ./src/H5Sprivate.h ./test/big.c ./test/h5test.c ./test/istore.c ./testpar/t_dset.c ./testpar/t_file.c ./tools/h5debug.c ./tools/h5ls.c Modified to work with the virtual file layer by calling H5FD_* functions instead of H5F_low_* functions and by passing file access and data transfer properties by object ID instead of pointer. Changed H5D_transfer_t to H5FD_mpio_xfer_t since the COLLECTIVE vs. INDEPENDENT transfer mode is specific to the MPIO file driver. Moved MPIO-specific stuff into the MPIO driver. ./src/H5B.c ./src/H5D.c ./src/H5Fprivate.h The H5F_mpio_* private functions were renamed and placed in the H5FDmpio driver except those which appeared in H5Smpio.c. ./src/H5E.c ./src/H5Epublic.h Added major error number H5E_VFL for virtual file layer related errors. ./src/H5F.c ./src/H5Fprivate.h Changed the logic that controls whether the boot block is written. Instead of assuming that the first call to write the boot block is only to allocate space, I've added a function argument which makes this explicit. Changed the way files are compared so that a driver-defined comparison function can be called. Files which belong to different drivers are always considered different. Removed H5F_driver_t since file drivers are now identified by object ID instead of a special non-user-extendible datatype. Removed all the hard-coded low-level file properties which have been replaced by the various file drivers. ./src/H5I.c ./src/H5Iprivate.h Added the H5I_inc_ref() which was removed a few months ago since we finally have a use for it. ./src/H5Ipublic.h Added the H5I_VFL object ID type to identify file drivers in the virtual file layer. ./src/H5MF.c ./src/H5MFprivate.h Moved all the allocation/deallocation code into the virtual file layer which allows file drivers to override much of it. ./src/H5P.c ./src/H5Ppublic.h Moved file driver-specific code into the various file driver files. The H5Pcopy() and H5Pclose() functions make calls into the virtual file driver to manage the memory for driver-specific file access and data transfer properties. ./src/H5private.h ./src/H5public.h The `haddr_t' type is now public. ./test/tfile.c Added a few more comments.
* [svn-r1418] Modified H5Tconvert to require a dataset transfer property ↵Quincey Koziol1999-07-031-2/+2
| | | | | | | | | | | | | list ID as the 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.
* [svn-r1204] Changes since 19990415Robb Matzke1999-04-231-15/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | ---------------------- ./config/depend.in Fixed automatic dependencies. We were storing dependencies for *.o files instead of *.lo files after shared libraries were added. ./config/gnu-flags ./config/linux-gnulibc1 Moved `-march=pentiumpro -mcpu=pentiumpro -malign-double' from the linux file to this file and caused it to depend on the CPU name. This fixes one of Elena's bugs. ./src/H5B.c ./src/H5Bprivate.h ./src/H5D.c ./src/H5Dprivate.h ./src/H5Dpublic.h ./src/H5F.c ./src/H5Farray.c ./src/H5Fistore.c ./src/H5Fmpio.c ./src/H5Fprivate.h ./src/H5Fpublic.h ./src/H5Gnode.c ./src/H5P.c ./src/H5RA.c ./src/H5Sall.c ./src/H5Shyper.c ./src/H5Smpio.c ./src/H5Spoint.c ./src/H5Sprivate.h ./src/H5Tpublic.h ./test/istore.c Added an H5Dget_storage_size() function that reports the amount of storage allocated for raw data in a dataset. Changed H5D_xfer_* to H5F_xfer_* because these properties are more general than datasets. This also allows some of the lower-level I/O functions to get this information easier. ./src/H5S.c ./src/H5Sall.c Added two new functions H5S_all_read() and H5S_all_write() which are optimizations that copy data directly between file and memory without having to go through the scatter gather step. This knocks quite a bit of time off the I/O and reading/writing entire datasets is a fairly common operation. ./tools/h5ls.c Reports the logical size of data, the allocated size of data, and the percent utilization. ./MANIFEST Removed old pablo files, added new files. Snapshots should now start to work again. ./src/H5D.c ./src/H5Fmpio.c Removed two warnings signed vs. unsigned comparisons and check for overflow.
* [svn-r1087] Changes since 19990218Robb Matzke1999-02-201-13/+13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | ---------------------- ./src/H5F.c ./src/H5private.h ./src/H5Ipublic.h ./src/H5O.c Fixed a rather nasty bug with file closing that caused the file boot block to be updated incorrectly, effectively truncating the file. The bug I fixed was triggered by: 1. Create a file, F 2. Open an object, X 3. Close file F 4. Reopen file F for read/write. 5. Create and close some objects 6. Close file F 7. Close library (exit). Step 3 pended the close because object X is still open, but the file ID was removed from the H5I_FILE ID group. Step 4 created a new file because it didn't see any matching file on the H5I_FILE ID group. Step 5 extends the file. Step 6 writes the new file boot block to disk. Step 7 closes object X and completes the close from step 3, writing the old boot block information to disk. The new behavior is that step 3 moves the file from the H5I_FILE group to the H5I_FILE_CLOSING group. Step 4 searches both groups and finds the file. Step 5 extends the file using the same H5F_file_t struct as step 3. Step 6 closes the H5F_t struct opened in step 3 but not the H5F_file_t struct shared by steps 1 and 3. Step 7 closes object X which closes the H5F_file_t from step 1, flushing the boot block which was shared by all steps. ./src/H5F.c Added some bulletproofing to file reference counting and removed comments which no longer apply. Added H5F_flush_all() and H5F_close_all() which apply to all files. ./src/H5A.c ./src/H5D.c ./src/H5F.c ./src/H5G.c ./src/H5I.c ./src/H5Iprivate.h ./src/H5R.c ./src/H5RA.c ./src/H5S.c ./src/H5T.c Added the new H5I_free_t data type to describe the function type to be passed as the `free_func' argument to H5I_init_group(). ./src/H5I.c Bulletproofed the object removal functions. Removed comments which no longer apply. Changed global variable names so they don't violate the naming scheme. Added H5I_debug() that prints the contents of an ID group. Removed H5I_inc_ref() because it isn't used. Reindented a couple of functions. ./src/H5.c ./src/H5G.c ./src/H5Ipublic.h Changed H5I_MAXID to H5I_NGROUPS to better relect the fact that it's the total number of valid ID groups. ./src/H5Shyper.c Changed hyperslab offset arrays to signed quantities to get rid of warnings on DEC cluster. ./src/H5Flow.c ./src/H5Fprivate.h Changed the objno argument of H5F_addr_pack() to be unsigned to get rid of warnings on DEC cluster.
* [svn-r1078] Changes since 19990215Robb Matzke1999-02-181-6/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | ---------------------- ./src/H5.c Fixed more dependency problems in H5_term_library(). There was a bug in the previous version that could cause the wrong EOF marker to be written to the boot block under certain circumstances. Hopefully this fixes it although I don't ready access to a test case (Mark Miller will test it). ./src/H5F.c ./src/H5Fprivate.h Added an H5F_close_all() that is similar to H5F_term_interface() but which doesn't close the interface. Files that don't have open object headers are closed, others are delayed until all object headers close. All files are flushed. ./src/H5ACprivate.h ./src/H5Bprivate.h ./src/H5Dprivate.h ./src/H5Eprivate.h ./src/H5Fprivate.h ./src/H5Gpkg.h ./src/H5Gprivate.h ./src/H5Gpublic.h ./src/H5HGprivate.h ./src/H5HLprivate.h ./src/H5Iprivate.h ./src/H5MFprivate.h ./src/H5MMprivate.h ./src/H5Oprivate.h ./src/H5Pprivate.h ./src/H5Ppublic.h ./src/H5RAprivate.h ./src/H5Sprivate.h ./src/H5Spublic.h ./src/H5Tpkg.h ./src/H5Tprivate.h ./src/H5Tpublic.h ./src/H5Vprivate.h ./src/H5Zprivate.h ./src/H5private.h ./src/H5public.h Reindented after __DLL__ was added.
* [svn-r1051] changed the HDF5DLL and HDF5GLOBAL to __DLL__ and __DLLVAR__Patrick Lu1999-02-021-14/+14
| | | | also exported all globals and non static functions to the dll
* [svn-r1032] Changes since 19990118Robb Matzke1999-01-211-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | ---------------------- ./tools/h5tools.c Strings are not converted to null-padding before being printed; they are printed with whatever byte values appear in the file. ./tools/h5ls.c Now able to display attribute data type and data. Added a `-f' or `--full' switch which causes the full name of each object to be displayed instead of just the base name. Added a `-r' or `--recursive' switch that recursively prints the contents of groups, avoiding cycles. More bulletproofing for non-printable characters in things like object names, attribute names, and comment strings. We don't want listing a file to send termal escape sequences because it's sometimes possible to execute commands that way. Since h5ls doesn't usually use quotes around object names we must sometimes escape space characters. External files are listed in a table to make the output less confusing. ./tools/h5tools.c ./tools/h5tools.h Changed h5dump() to h5dump_dset() and added h5dump_mem(). Also make h5dump_fixtype() public. ./test/dtypes.c Wrote some data to an attribute to test h5ls attribute printing. ./src/H5ACprivate.h ./src/H5Apublic.h ./src/H5Dprivate.h ./src/H5Dpublic.h ./src/H5Epublic.h ./src/H5Fprivate.h ./src/H5Fpublic.h ./src/H5Gprivate.h ./src/H5HLprivate.h ./src/H5Oprivate.h ./src/H5Ppublic.h ./src/H5RApublic.h ./src/H5Rpublic.h ./src/H5Spublic.h ./src/H5Tpkg.h ./src/H5Tpublic.h ./src/H5Vprivate.h ./src/H5Zpublic.h ./src/H5private.h ./src/H5public.h Reindented function prototypes after `HDF5API' was added. Also rewrapped long lines. ./src/H5Flow.c Added an `#ifdef WIN32' around an unused variable. ./src/H5api_adpt.h Removed extra carriage returns inserted by "broken" operating system. ./src/H5Dprivate.h ./src/H5Oprivate.h ./src/H5Vprivate.h ./src/H5private.h Removed extraneous inclusion of H5api_adpt.h since it's included in H5public.h which is included by everything. ./src/Makefile.in Added H5api_adpt.h to the list of public header files to fix broken `make install'.
* [svn-r1030] added necessary info to export functions to dllPatrick Lu1999-01-211-2/+2
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* [svn-r876] Changes since 19981102Robb Matzke1998-11-051-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | ---------------------- ./bin/snapshot Made same fix as for the release script yesterday. ./src/H5D.c ./src/H5Dprivate.h ./src/H5G.c ./src/H5Gprivate.h ./src/H5Gpublic.h ./src/H5O.c ./src/H5Oprivate.h ./src/H5RA.c ./src/H5RAprivate.h ./src/H5T.c ./src/H5Tprivate.h Improved object type checking. Instead of determining the object type by trying to open each of the possible types, we keep a table of associations between object type number (like H5G_GROUP, H5G_DATASET, H5D_TYPE, and H5D_RAGGED) and an `isa' function that returns true if the object header has the right messages to make the object a particular type. This mechanism also allows specialization of object types by permitting an object to satisfy more than one `isa' function. Added `isa' functions for groups, datasets, ragged arrays, and committed data types. ./src/H5config.h.in Added HAVE_STAT_ST_BLOCKS. I thought this had already been added, but apparently not. ./tools/h5ls.c Removed system include files since they're already included by H5private.h and since I wasn't including them portably anyway. By default, 1-byte integer types are printed as integer values instead of ASCII characters. However, the `-s' or `--string' command-line switch causes the data to be interpretted as ASCII. String data types are always printed as character data. Ragged arrays are now identified as ragged arrays and h5ls doesn't descend into the group automatically. This uses the new object type specialization stuff. ./tools/h5tools.c ./tools/h5tools.h Added the ability to print 1-byte integer types as either ASCII or numeric data instead of always ASCII. The default is to print as numeric data.
* [svn-r791] Internal API tweaks to H5D_open_oidQuincey Koziol1998-10-261-2/+1
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* [svn-r776] Fixed references, object references should be working now.Quincey Koziol1998-10-221-0/+1
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* [svn-r757] Added code for object references.Quincey Koziol1998-10-131-0/+2
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* [svn-r745] Changes since 19981002Robb Matzke1998-10-081-1/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | ---------------------- ./doc/html/H5.format.html ./src/H5HG.c Fixed a bug in the global heap that caused H5HG_read() to write past the end of the buffer in certain cases. ./test/big.c The test is skipped if hdf5 was configured with `--disable-hsizet'. ./src/H5Ofill.c Data type conversions are implemented for the fill value. ./src/H5.c Tracing prints one of H5P_FILE_CREATE, H5P_FILE_ACCESS, H5P_DATASET_CREATE, H5P_DATASET_XFER, or H5P_MOUNT instead of the more cryptic H5I_TEMPLATE_* constants. ./src/H5D.c Removed prototype for H5D_find_name(). ./src/H5I.c The GROUP_MASK and ID_MASK are both calculated from GROUP_BITS instead of being set by hand. We don't use the sign bit of hid_t; all valid hid_t values are positive so we can say things like `if ((file=H5Fopen(...))<0)'. Changed `(int)pow(2.0,x)' to `1<<x' so we don't have to worry about rounding. Fixed H5I_get_type() so it doesn't always fail an assertion. ./src/H5E.c ./src/H5Epublic.h Added minor error H5E_MOUNT ./src/H5F.c ./src/H5Fprivate.h Added H5Fmount() and H5Funmount(). Mounting and unmounting works as documented but some of the other things aren't implemented yet, the biggest being current working groups always acting on the root of the mount tree, and H5Fclose() closing the entire tree. The rest of the stuff will be added shortly... ./src/H5P.c ./src/H5Ppublic.h Added the H5P_MOUNT property list but haven't implemented any particular properties for it yet. ./src/H5Gstab.c Hard links across files return an error instead of failing an assertion.
* [svn-r737] Changed H5I groups to have a H5I_ prefix before them, to better ↵Quincey Koziol1998-10-051-1/+1
| | | | | | align with the library.
* [svn-r733] Robb Matzke1998-10-011-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Changes since 19980930 ---------------------- ./MANIFEST ./doc/html/H5.format.html ./src/H5D.c ./src/H5Dprivate.h ./src/H5Farray.c ./src/H5Fistore.c ./src/H5Fprivate.h ./src/H5O.c ./src/H5Ofill.c [NEW] ./src/H5Oprivate.h ./src/H5P.c ./src/H5Ppublic.h ./src/H5Sall.c ./src/H5Shyper.c ./src/H5Spoint.c ./src/H5Sprivate.h ./src/Makefile.in Added fill values as documented in previous e-mails. They only work for chunked datasets so far. ./src/H5E.c ./src/H5Epublic.h ./src/H5P.c Changed H5E_TEMPLATE to H5E_PLIST. ./src/H5Omtime.c ./src/H5V.c Fixed a typo in a comment. ./src/H5Tconv.c Fixed a bug in compound type conversions that caused an assertion to fail.
* [svn-r730] Changes since 19980928Robb Matzke1998-09-301-2/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | ---------------------- ./MANIFEST Changed freebsd2.2.1 to freebsd2.2.7 to match change in file name. Added a few missing files. Are all of these supposed to be distributed? ./tools/testfiles/h5dumptst.c + ./tools/testfiles/tall-1.ddl + ./tools/testfiles/tall-2.ddl + ./tools/testfiles/tall-3.ddl ./tools/testfiles/tall.ddl ./tools/testfiles/tall.h5 + ./tools/testfiles/tattr-1.ddl + ./tools/testfiles/tattr-2.ddl + ./tools/testfiles/tattr-3.ddl + ./tools/testfiles/tattr-4.ddl ./tools/testfiles/tattr.ddl ./tools/testfiles/tattr.h5 + ./tools/testfiles/tdset-1.ddl + ./tools/testfiles/tdset-2.ddl + ./tools/testfiles/tdset-3.ddl + ./tools/testfiles/tdset-4.ddl ./tools/testfiles/tdset.ddl ./tools/testfiles/tdset.h5 + ./tools/testfiles/tgroup-1.ddl + ./tools/testfiles/tgroup-2.ddl + ./tools/testfiles/tgroup-3.ddl ./tools/testfiles/tgroup.ddl ./tools/testfiles/tgroup.h5 + ./tools/testfiles/tslink-1.ddl + ./tools/testfiles/tslink-2.ddl ./tools/testfiles/tslink.ddl ./tools/testfiles/tslink.h5 ./src/H5B.c ./src/H5Bprivate.h ./src/H5D.c ./src/H5Dprivate.h ./src/H5Farray.c ./src/H5Fistore.c ./src/H5Fprivate.h ./src/H5Gstab.c ./src/H5P.c ./src/H5Ppublic.h ./src/H5Sall.c ./src/H5Shyper.c ./src/H5Spoint.c ./src/H5Sprivate.h ./test/istore.c Implemented split ratios as documented in previous e-mails. Frank, the new API functions are H5Pget_btree_ratios() and H5Pset_btree_ratios(). ./src/H5Sall.c ./src/H5Shyper.c ./src/H5Spoint.c ./src/H5Sprivate.h Added more type checking for the data transfer property list passed to these functions. ./src/H5D.c Added a dataset transfer property list as an argument to H5D_allocate() for the parallel version in order to pass split ratios down to H5F_istore_lock(). Eventually we won't need the split ratios for H5D_allocate() because we'll build a completely full B-tree from the leaves up, but it might be useful to have other transfer properties at that level anyway. I always caled H5D_allocate() with &H5D_dflt_xfer. ./MANIFEST ./test/Makefile.in ./test/overhead.c [NEW] Added an `overhead' test run by `make timings'.
* [svn-r712] Added temporary buffer support to several places in the library ↵Quincey Koziol1998-09-211-0/+2
| | | | | | | which were calling malloc too often. Also, added caching of hyperslab blocks, which improves performance _significantly_ for hyperslab I/O.
* [svn-r633] Changes since 19980828Robb Matzke1998-08-311-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | ---------------------- ./RELEASE Updated with important changes I made since the second beta. ./src/H5A.c ./src/H5D.c ./src/H5Dprivate.h ./src/H5G.c ./src/H5Gprivate.h ./src/H5R.c ./src/H5Rprivate.h ./src/H5T.c ./src/H5Tprivate.h Any API function that used to take an `hid_t loc_id' followed by a `const char *name' can now take any type of object for the loc_id as long as the object is somehow associated with a file. Internally, H5G_loc() was modified to return an H5G_entry_t* instead of an H5G_t* so it's more general. Among other things, this allows one to retrieve information about an object like a named type or dataset without knowing the name of the type or dataset: int get_nlinks (hid_t obj) { H5G_stat_t sb; if (H5Gstat(obj, ".", TRUE, &sb)<0) return -1; return sb.nlink; } ./test/gheap.c ./test/istore.c These files needed a couple of changes because they call some of the internal functions whose H5G_t arguments changed to H5G_entry_t. ./src/H5A.c Got rid of all the switch statements for getting symbol table entries for varous objects and replaced them with a call to H5G_loc() allowing attributes to automatically apply to any type of object that belongs to a file. ./test/Makefile.in Moved the ragged array tests from the normal list of tests to the `make timings' target. ./test/ragged.c Added rewrite tests -- rewrite the rows of a dataset changing the number of rows and the length of each row. ./test/mtime.c Added a test that checks that H5Gstat() can be called with a dataset as the first argument. ./src/H5S.c Added #ifdef HAVE_PARALLEL around code to check for the HDF5_MPI_OPT_TYPES environment variable because the global variable that gets set is #ifdef'd. ./bin/release bzip2 uses .bz2 as the file extension.
* [svn-r620] Changes since 19980825Robb Matzke1998-08-271-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | ---------------------- ./MANIFEST ./src/H5R.c [NEW] ./src/H5Rprivate.h [NEW] ./src/H5Rpublic.h [NEW] ./src/Makefile.in ./src/hdf5.h ./test/ragged.c [NEW] Preliminary support for 2d ragged arrays for Mark Miller and Jim Reus. Not fully implemented yet. The test is not actually part of `make test' because we still have some memory problems. ./src/H5E.c ./src/H5Epublic.h Added H5E_RAGGED as a major error number. ./bin/release Checks the MANIFEST file against `svf ls' on systems that have it. ./bin/trace Fixed a bug that caused arguments of type `void *x[]' to not be handled. ./src/H5.c Removed unused variables and changed a couple types to fix compiler warnings. Added tracing support for ragged array object ID's and arrays of pointers. ./src/H5D.c H5Dcreate() will complain if either of the property lists are invalid (instead of using the default). ./src/H5D.c ./src/H5Dprivate.h Split H5Dget_space() into an API and internal function so it can be called from the new ragged array layer. ./src/H5Fistore.c Fixed warnings about unsigned vs. signed comparisons. ./src/H5Flow.c Fixed a warning about a variable being shadowed in the MPI-IO stuff. ./src/H5Iprivate.h ./src/H5Ipublic.h Added the H5_RAGGED atom group. ./src/H5Shyper.c Fixed some freeing-free-memory errors that resulted when certain arrays were freed but the pointers were left in the data structures. I simply set the pointers to null after they were freed. ./src/H5Sprivate.h ./src/H5Sselect.c Split the H5Sselect_hyperslab() function into an API and a private function so it could be called from the ragged array layer. Added H5S_SEL_ERROR and H5S_SEL_N to the switch statements to get rid or compiler warnings. ./src/H5Tconv.c Removed a misleading comment. ./test/bittests.c Fixed a warning about a printf(). ./test/cmpd_dset.c Fixed warnings about unused variables because of test #11 being commented out. ./bin/trace Shortened the right margin for the output to allow room for the `);' at the end of the TRACE() macros.
* [svn-r569] Changes since 19980731Robb Matzke1998-08-051-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | ---------------------- ./bin/release Added ./Makefile to the distribution again -- it got lost in the changes last week although it isn't all that important a file since it gets clobbered by configure anyway. ./bin/trace ./doc/html/Filters.html ./doc/html/H5.format.html ./doc/html/H5.user.html ./src/H5.c ./src/H5D.c ./src/H5Dprivate.h ./src/H5E.c ./src/H5Epublic.h ./src/H5Farray.c ./src/H5Fistore.c ./src/H5Fprivate.h ./src/H5O.c ./src/H5Ocomp.c ./src/H5Oprivate.h ./src/H5P.c ./src/H5Ppublic.h ./src/H5Sall.c ./src/H5Shyper.c ./src/H5Spoint.c ./src/H5Sprivate.h ./src/H5Ssimp.c ./src/H5Z.c ./src/H5Zprivate.h ./src/H5Zpublic.h ./src/hdf5.h ./test/dsets.c ./tools/h5ls.c Added the data filter pipeline, a generalization of the compression stuff which allows things like checksums, encryption, compression, performance monitoring, etc. See ./doc/html/Filters.html for details -- it replaces the Compression.html doc. ./src/H5T.c Cleaned up debugging output. ./config/linux Added checks for egcs and pgcc and changed optimization flags for the compilers. ./src/H5G.c ./tools/h5dump.c Fixed compiler warnings in these files and others. ./configure.in ./src/H5private.h ./test/mtime.c Added a check for difftime() and defined HDdifftime() to do something else on systems that don't have difftime().
* [svn-r411] Added data-transfer-mode to various function to specify whichAlbert Cheng1998-06-071-2/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | mode to use for data transfer. Currently, INDEPENDENT transfer is the default mode. Collective is supported for files opened via the MPIO driver. Specific changes to individual files follow. H5D.c: Replaced previous kludge of passing xfer_mode via the file access_mode with xfer_mode function parameter all the way to the low level I/O drivers. H5Dprivate.h: The H5D_xfer_t.xfer_mode is now used in serial and parallel modes. Removed the "HAVE_PARALLEL" macro condition to support it. H5Dpublic.h: Added H5D_XFER_DFLT as a new value for H5D_transfer_t and removed the HAVE_PARALLEL condition macro to make the H5D_transfer_t definition available to both serial and parallel version. H5B.c: H5F.c: H5Farray.c: H5Fcore.c: H5Ffamily.c: H5Fistore.c: H5Flow.c: H5Fmpio.c: H5Fsec2.c: H5Fsplit.c: H5Fstdio.c: H5Gnode.c: H5HG.c: H5HL.c: H5O.c: H5Sprivate.h: H5Ssimp.c: debug.c: Added xfer_mode to the argument lists of the following routines to specify data transfer mode. Then updated calls to these routines with appropriate transfer mode. Whenever cases that collective mode is inappropriate (e.g. object header read-write, flush), H5D_XFER_DFLT is used. The H5D_XFER_DFLT mode is currently acting the same as the independent mode. H5F_block_read H5F_block_write H5F_arr_read H5F_arr_write H5F_core_read H5F_core_write H5F_fam_read H5F_fam_write H5F_mpio_read H5F_mpio_write H5F_low_write H5F_low_read H5F_sec2_read H5F_sec2_write H5F_split_read H5F_split_write H5F_stdio_read H5F_stdio_write H5S_simp_fgath H5S_simp_fscat H5S_simp_read H5S_simp_write H5Fprivate.h: H5P.c: Removed access_mode field from struct H5F_access_t type. The access-mode was the initial design to control independent or collective I/O mode. It is now supported by the data transfer mode.
* [svn-r407] ./src/H5A.cRobb Matzke1998-06-041-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | ./src/H5D.c ./src/H5Tconv.c ./src/H5detect.c Updated to work with new internal H5T functions. Fixed some data type memory leaks during error recovery. ./src/H5Dprivate.h Added H5D_typeof() similar to H5D_entof() that returns a pointer directly to the dataset's type. This is used by H5Tcopy() when invoked on a dataset (see below). ./src/H5Epublic.h Fixed typos in H5E_BEGIN_TRY and H5E_END_TRY macros. ./src/H5F.c Closing a file with objects still open reports the file name in the warning message. Removed unnecessary invalidation of shared data types. ./src/H5Gent.c ./src/H5Gpkg.h ./src/H5Gprivate.h Added `const' to some arguments. ./src/H5O.c ./src/H5Oprivate.h ./src/H5Oshared.c An object header message can now be a pointer to a message in some other object header. The pointer is to the first message of the appropriate type in the other object header and hard link counts are maintained automatically to prevent dangling pointers. The old global heap method of message sharing is also supported although nothing actually uses it. ./src/H5Oattr.c ./src/H5Ocomp.c ./src/H5Ocont.c ./src/H5Odtype.c ./src/H5Oefl.c ./src/H5Olayout.c ./src/H5Oname.c ./src/H5Osdspace.c ./src/H5Oshare.c ./src/H5Ostab.c Changed the data type for the shared message info struct to H5O_shared_t and added an extra initializer to the class methods struct for the set_share method. ./src/H5Odtype.c Added the ability to share data type messages by pointing to other object headers. ./src/H5T.c ./src/H5Tpkg.h ./src/H5Tprivate.h ./src/H5Tpublic.h Added named data types and changed the functionality of some API functions as follows: * The term `read-only' means that a type handle cannot be modified with functions like H5Tset_*() or H5Tinsert(). * The term `immutable' means the same as `read-only' with the added restriction that H5Tclose() cannot be called for the type. A transient type is made immutable by calling H5Tlock(). * Handles to named types are always read-only. * Handles to predefined types are immutable. * A transient type can be converted to a named type by calling H5Tcommit(). This function will fail if the type is already named or is immutable. * The API function H5Tcommitted() returns an indication of whether a data type has been commited (or is named). If H5Tcommitted() returns TRUE for a data type obtained by calling H5Dget_type() on a dataset, then the dataset is using a shared data type. * H5Topen() returns a handle to a named type. * H5Tcopy() always returns a handle to a modifiable transient type even when invoked on a named type. Also, when invoked on a dataset it returns a modifiable transient type which is a copy of the dataset's data type. * Using a named data type in the call to H5Dcreate() causes the dataset object header to point to the named data type, but using a transient type causes the type to be copied into the dataset's object header. * The data type returned from H5Dget_type() is a named data type or a read-only transient data type depending on whether the dataset points to a named data type. The old behavior, to return a modifiable transient type, is accomplished by overloading H5Tcopy() to operate on datasets (see above). * H5Tshare(), H5Tunshare(), and H5Tis_shared() have been removed from the API. The following features were *not* implemented because they need more discussion: * A named data type can be opened by applying H5Topen() to a dataset in which case the data type is the data type of the dataset (or the data type to which the dataset points if the dataset has a shared data type). * A named data type can have attributes like groups or datasets. * The members of a compound data type can point to named data types. ./src/h5ls.c Reports `Data type' for named data type objects in the file.
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