| Commit message (Collapse) | Author | Age | Files | Lines |
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Code cleanup & minor optimization
Description:
Re-work the way interface initialization routines are specified in the
library to avoid the overhead of checking for them in routines where there is
no interface initialization routine. This cleans up warnings with gcc 3.4,
reduces the library binary size a bit (about 2-3%) and should speedup the
library's execution slightly.
Platforms tested:
FreeBSD 4.10 (sleipnir) w/gcc34
h5committest
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allow users to register IDs and ID types at runtime.
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Description: After I added H5S_NULL dataspace dumper test, the output didn't
match XML schema for attribute data.
Solution: changed.
Platforms tested: RH 8(fuss), only dumper is involved, minor change.
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Code optimization
Description:
Use 'size_t' instead of 'hsize_t' to track the number of elements in
memory buffers, especially for type conversion.
Platforms tested:
Solaris 2.7 (arabica)
FreeBSD 4.10 (sleipnir) w/parallel
Too minor to require h5committest
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Description: I put H5T_lock in H5T_open in last checkin but found it's
unnacessary.
Solution: Took it out.
Platforms tested: RH 8(fuss). Simple change.
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Description: For opaque datatype, if tag isn't defined, some operations will
have trouble because the tag string is null.
Solution: Initialize the tag string to empty string after the opaque type is created.
Platforms tested: h5committest
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Code optimization
Description:
Eliminate many redundant lookups to check for no-op type conversion by
remembering that a type conversion path is the no-op path.
Also, don't allow non-no-op conversions which happen to be no-ops on a
particular machine (such as int<->long conversions on machines where int and
long are the same size and format, etc.) to replace the default no-op
conversion.
Platforms tested:
Solaris 2.7 (arabica)
FreeBSD 4.9 (sleipnir) w/parallel
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Bug fix (sorta)
Description:
Add hack to allow the MS Visual Studio 6 compiler to build the library.
It cannot cast unsigned long long values to float or double values. So, add
another configuration macro to disable this conversion in the library. Just
the "hardware" conversion is disabled, so the library will still correctly
convert unsigned long long to float and double values, it will just happen
more slowly with the "software" conversion routine.
Platforms tested:
FreeBSD 4.9 (sleipnir) with "Windows" setting faked
inappropriate for h5committest
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Optimization
Description:
Speed up various parts of the library by setting a global variable for the
endianness of the machine at library startup and use that variable instead of
repeatedly querying the endianness of the native int datatype.
Platforms tested:
IBM p690 (copper)
too minor to require h5committest
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Code cleanup
Description:
Clean up compiler warnings, especially the 'FUNC' variable not used which
comes out in production mode.
Solution:
Had to add a new FUNC_ENTER_NOAPI_NOINIT_NOFUNC macro for those non-API
functions which don't need the 'FUNC' variable defined. (This will be _so_
much easier when C99 is standard on all our supposed platforms, since it has a
__FUNC__ macro... )
Platforms tested:
FreeBSD 4.9 (sleipnir)
too minor for h5committest (although there were lots of files changed, the
change was minor in each one)
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Omnibus floating-point bug fix changes
Description:
There are a number of problems in the floating-point conversion code that
were exposed by Ray's recent int<->float checkin:
- The 'my_isnan' code in test/dtypes.c was broken and would always return
true. The meant that the actual values in the float<->float conversion
tests were _never_ checked, hiding the other bugs included in this
checkin.
- A recent change I made to the type conversion code used "FLT_MIN" instead
of "-FLT_MAX" for the most negative 'float' value for the double->float
conversion, which meant that any the negative number that was converted
from a double to a float would have been mapped to zero, essentially.
- A change that Robb appeared to have made ~2.5 years ago to the "generic"
float->float conversion routine appears to be incorrect and I've backed
it out.
- Floating-point conversions on SGI's which converted denormalized values
would be mapped to zero instead of being propertly preserved in the new
type. This was addressed by an SGI-specific system call to prevent the
behavior.
Solution:
Described above, generally.
Platforms tested:
FreeBSD 4.9 (sleipnir)
h5committest
Misc. update:
release_docs/RELEASE update forthcoming...
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Description: data type conversion between integers and float numbers.
(Cover your ears. It's going to explode.:)
Solution: covers all native type conversion. Mainly uses hardware
conversion but handles overflow more gracefully.
Platforms tested: h5committest
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Bug fix
Description:
Remove the [duplicated] native C9x datatype initializatin code from H5T.c
and let the automatically generated code in H5Tinit.c handle initializing them,
if they are allowed by the compiler.
Platforms tested:
FreeBSD 4.9 (sleipnir)
Linux 2.4 (verbena, eirene)
probably should be h5committested, but it's late and I'm fairly certain
this will fix the problem... :-/
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Bug fix
Description:
Avoid "OPAQUE" symbol in template macro invocation, since it's already
defined as a macro on Windows.
Solution:
OPAQUE -> OPAQ
Platforms tested:
FreeBSD 4.9 (sleipnir)
Windows ? (Pedro's machine :-)
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Tweak comments.
Testing:
Not necessary..
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Refactor code
Description:
Use "template macro" technique to eliminate a huge amount of repeated code
in type initialization code (almost 1000 lines, between this change and the
changes to the H5Tconv.c file earlier).
This centralizes the common parts of the code and makes the different parts
of the code more obvious.
Platforms tested:
FreeBSD 4.9 (sleipnir)
too minor to require h5committest
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Code cleanup
Description:
Change field member count and indices for compound and enumerated types from
'int' to 'unsigned' to better reflect actual use.
Cleaned up a few other minor compiler warnings, etc.
Platforms tested:
FreeBSD 4.9 (sleipnir)
Linux 2.4 (verbena)
too minor to require h5committest
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Code cleanup, etc.
Description:
Generalize Ray's datatype fixes to handle packing compound datatypes which
are the base type of an array or variable-length type, etc.
Also track "packedness" of a compound datatype from it's creation, instead
of only setting the 'packed' flag after the datatype was explicitly packed.
Updated docs to reflect that a compound datatype is allowed to grow (but
not shrink).
Platforms tested:
FreeBSD 4.9 (sleipnir)
h5committest
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Description: H5Tpack fails if called twice or datatype is locked. Compound
datatype wasn't expandable.
Platforms tested: h5committest
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Code cleanup
Description:
More de-linting...
Platforms tested:
FreeBSD 4.9 (sleipnir)
too small to need h5committest
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Bug Fix and code cleanup
Description:
Correct error in H5T_detect_class that was causing nested compound datatypes
with to not detect the datatype class of fields correctly, which caused errors
with fill-values, variable-length datatypes and chunks later on.
Return the rank of the array datatype from H5Tget_array_dims(), like
H5Sget_dims().
Lots of cleanups to datatype code, to make the handling of arrays, compound
types, variable-length strings and sequences and enumerated types more
consistent and robust.
Platforms tested:
FreeBSD 4.9 (sleipnir)
h5committest
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Bug fix
Description:
Object references were not getting written out correctly to the file, with
recent changes to their memory structure.
Solution:
Convert the object references correctly.
Platforms tested:
h5committested
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Code cleanup
Description:
Changed lines like:
H5E_clear(H5E_get_my_stack());
to:
H5E_clear(NULL);
which performs the same operation.
Platforms tested:
h5committested
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Update code
Description:
Move "PABLO_MASK" definition above header file inclusion to avoid problems
with inline functions in header files.
Platforms tested:
FreeBSD 4.8 (sleipnir)
h5committest
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Code cleanup
Description:
Tweak internal iterator over IDs to not require constant "operator" data.
Platforms tested:
FreeBSD 4.8 (sleipnir)
h5committest
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Code cleanup.
Description:
Move many package or internal function prototypes and macro definitions
into tighter scope according to their current use.
Added more comments where appropriate.
Eliminate ancient, unused functions.
Added a couple "accessor" functions to get parts of data structures which
were moved out of scope.
Platforms tested:
h5committested
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Code cleanup.
Description:
Cleaned up an unusued variable and some commented out code.
Platforms tested:
FreeBSD 4.8 (sleipnir)
Triple check not needed.
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Description: H5T_XXX_init_interface calls H5T_init_interface causing
datatype not closed after file is closed.
Solution: changed H5T_init_interface to H5T_init
Platforms tested: h5committest
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Code cleanup
Description:
Clean up miscellaneous warnings which have crept into the code.
Fix "_POSIX_C_SOURCE not defined" warning on FreeBSD.
Adjust gcc compiler flags to be more concise for production mode.
Refactor the H5O code so that there is a stronger boundary between code
in the H5O package and code in the library which just calls H5O routines.
Platforms tested:
Tested h5committest {arabica (fortran), eirene (fortran, C++)
modi4 (parallel, fortran)}
FreeBSD 4.7 (sleipnir) serial & parallel and gcc 2.95.4 & gcc 3.2.2
Misc. update:
Update MANIFEST if you add or remove any file.
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Code cleanup.
Description:
Break up the ~9350 line H5T.c module into smaller pieces, which contain
code for a particular feature or support for a datatype class.
This should make the "main" H5T code (still in H5T.c) easier to support,
as well as removing some of the "minor" routines from the user applications
which don't use them (my rough estimates show about 4% reduction (~30K on
a FreeBSD machine) in optimized, staticly-linked binaries for very simple
programs)
Platforms tested:
Tested h5committest {arabica (fortran), eirene (fortran, C++)
modi4 (parallel, fortran)}
FreeBSD 4.7 (sleipnir)
Misc. update:
Update MANIFEST
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Update feature
Description:
Relax collective constraint for API functions which only read metadata
from a file.
Platforms tested:
Tested h5committest {arabica (fortran), eirene (fortran, C++)
modi4 (parallel, fortran)}
FreeBSD 4.7 w/parallel
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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
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Code cleanup/new feature.
Description:
Split FUNC_LEAVE into API and non-API specific versions. This allows a
solution to compiling this branch with C++, as well as reducing the size
of the binaries produced.
Platforms tested:
FreeBSD 4.7 (sleipnir) w/serial, parallel (including MPE) & thread-safe
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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
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Purpose:
Cleanup H5Tget_native_type code
Description:
improve code cosmetics.
Solution:
Platforms tested:
modi4, eirene, arabica
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Fix Windows portability bug
Description:
"long long" is not defined on Windows.
Solution:
Use our internal definition of "long_long" instead.
Platforms tested:
eyeballed.
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Code Cleanup
Description:
A function was returning "NULL" instead of "FAIL" for an error
condition. Renamed the variable "class" to "h5_class" since class is
a keyword in C++ and might mess up with a C++ compiler...
Platforms tested:
Eirene pp (too small a change for 3 tests)
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Code cleanup
Description:
Cleaned up some error values that were incorrect, added some assertions
and refactored the integer & floating-point native conversions some.
Platforms tested:
FreeBSD 4.7 (sleipnir), too small for h5committest
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Purpose:
Add new functions
Description:
add H5Tget_native_type and H5Tis_variable_str.
Platforms tested:
arabica, eirene, modi4
Misc. update:
MANIFEST and release_docs/RELEASE updated.
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Code cleanup/Bug Fix
Description:
Re-do the ID->name code again, taking into account many more weird and
wonderful special cases stumbled across during the last set of test
writing.
Platforms tested:
FreeBSD 4.6 (sleipnir) w and w/o parallel
Linux 2.2.x (eirene) w/FORTRAN & C++
Solaris 2.7 (arabica) w/FORTRAN
IRIX64 6.5 (modi4) w/FORTRAN & parallel
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Code cleanup
Description:
Clean up ID->name code:
- Reformat to better match library coding standard
- Changed several algorithms to be more efficient
- Integrated into library more smoothly
Platforms tested:
eirene w/FORTRAN & C++
arabica w/FORTRAN
modi4 w/FORTRAN & parallel
sleipnir
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Purpose:
bug fix
[ i s this a bug fix? feature? ...]
Description:
the copy of a symbol table entry was done with a shallow copy, in H5T_copy
this was causing an exception on the free call of the ID to name buffer
replaced a shallow copy of a symbo l a edescribe the bug, or describe the new feature, etc]
Solution:
[details about the changes, algorithm, etc...]
[Please as detail as you can since your own explanation is
better than others guessing it from the code.]
Platforms tested:
windows 2000
solaris with cpp, fortran
irix64, with fortran, parallel i r
[machines you have tested the changed version. This is absolute
important. Test it out on at least two or three different platforms
such as Big-endian-32bit (SUN/IRIX), little-endian-32(LINUX) and
64-bit (IRIX64/UNICOS/DEC-ALPHA) would be good.]
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Purpose:
bug fix
Description:
memory leak regarding the ID to name buffer
Solution:
added a new function H5G_free_ent_name that is called on several places of the library
Platforms tested:
windows 2000
linux, with cpp
solaris, with fortran, cpp
irix64, with parallel, fortran
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Purpose:
bug fix in 'ID to name' function
Description:
the function replace_name was only checking for immutable datatypes
Solution:
added a new function H5T_is_named, that checks for named datatypes
Platforms tested:
windows 2000, linux, solaris with Fortran
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Purpose:
Added 'ID to name' support
Description:
There is a new API function H5Iget_name
Most of the changes are on H5G.c , regarding the symbol table entry struct H5G_entry_t
which has 2 new fields 'name' and 'old_name'
A new private function was introduced H5G_ent_copy, that does a deep copy
between 2 symbol table entries
The test file is getname.c
Platforms tested:
windows 2000, Linux, Solaris
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