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New feature
Description:
Check in baseline for compact group revisions, which radically revises the
source code for managing groups and object headers.
WARNING!!!! WARNING!!!! WARNING!!!! WARNING!!!! WARNING!!!! WARNING!!!!
WARNING!!!! WARNING!!!! WARNING!!!! WARNING!!!! WARNING!!!! WARNING!!!!
This initiates the "unstable" phase of the 1.7.x branch, leading up
to the 1.8.0 release. Please test this code, but do _NOT_ keep files created
with it - the format will change again before the release and you will not
be able to read your old files!!!
WARNING!!!! WARNING!!!! WARNING!!!! WARNING!!!! WARNING!!!! WARNING!!!!
WARNING!!!! WARNING!!!! WARNING!!!! WARNING!!!! WARNING!!!! WARNING!!!!
Solution:
There's too many changes to really describe them all, but some of them
include:
- Stop abusing the H5G_entry_t structure and split it into two separate
structures for non-symbol table node use within the library: H5O_loc_t
for object locations in a file and H5G_name_t to store the path to
an opened object. H5G_entry_t is now only used for storing symbol
table entries on disk.
- Retire H5G_namei() in favor of a more general mechanism for traversing
group paths and issuing callbacks on objects located. This gets us out
of the business of hacking H5G_namei() for new features, generally.
- Revised H5O* routines to take a H5O_loc_t instead of H5G_entry_t
- Lots more...
Platforms tested:
h5committested and maybe another dozen configurations.... :-)
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Code cleanup
Description:
Trim trailing whitespace, which is making 'diff'ing the two branches
difficult.
Solution:
Ran this script in each directory:
foreach f (*.[ch] *.cpp)
sed 's/[[:blank:]]*$//' $f > sed.out && mv sed.out $f
end
Platforms tested:
FreeBSD 4.11 (sleipnir)
Too minor to require h5committest
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Code cleanup
Description:
Clean up various warnings reported by the Windows team.
Platforms tested:
FreeBSD 4.11 (sleipnir)
Too minor to require h5committest
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Code optimization
Description:
Add "base" size to array free list code, to accomodate skip list nodes.
Platforms tested:
FreeBSD 4.11 (sleipnir)
Solaris 2.9 (shanti)
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Add comments
Description:
Add note to investigate "deterministic skip lists", in case I forget...
Platforms tested:
FreeBSD 4.11 (sleipnir)
Solaris 2.9 (shanti)
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Description: Removed PABLO from the source
Solution:
Platforms tested: arabica with 64-bit, copper with parallel,
heping with GNU C and C++ and PGI fortran (but
I disabled hl, there is some weird problem only
on heping: F9XMODFLAG is not
propagated to the Makefile files
Misc. update:
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New feature
Description:
Add some additional features to the skip list code that was needed to
fully support all the features that the threaded, balanced binary tree code
has.
Also, updated the property list code to take advantage of a few of the
new features.
Platforms tested:
FreeBSD 4.10 (sleipnir)
Too minor to require h5committest
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Code cleanup
Description:
Convert chunk iteration code to use skip lists instead of threaded, balanced
binary trees.
Platforms tested:
FreeBSD 4.10 (sleipnir) w/parallel & szip
Too minor to require h5committest
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Code cleanup (sorta)
Description:
Transition the generic property list code from using the threaded, balanced
binary tree code (H5TB<foo>() routines) to use skip lists (H5SL<foo>() routines)
for internal management of properties, etc.
Platforms tested:
FreeBSD 4.10 (sleipnir)
Too minor to require h5committest
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Bug Fix/Code Cleanup/Doc Cleanup/Optimization/Branch Sync :-)
Description:
Generally speaking, this is the "signed->unsigned" change to selections.
However, in the process of merging code back, things got stickier and stickier
until I ended up doing a big "sync the two branches up" operation. So... I
brought back all the "infrastructure" fixes from the development branch to the
release branch (which I think were actually making some improvement in
performance) as well as fixed several bugs which had been fixed in one branch,
but not the other.
I've also tagged the repository before making this checkin with the label
"before_signed_unsigned_changes".
Platforms tested:
FreeBSD 4.10 (sleipnir) w/parallel & fphdf5
FreeBSD 4.10 (sleipnir) w/threadsafe
FreeBSD 4.10 (sleipnir) w/backward compatibility
Solaris 2.7 (arabica) w/"purify options"
Solaris 2.8 (sol) w/FORTRAN & C++
AIX 5.x (copper) w/parallel & FORTRAN
IRIX64 6.5 (modi4) w/FORTRAN
Linux 2.4 (heping) w/FORTRAN & C++
Misc. update:
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New feature
Description:
Add callback iteration routine to skip lists.
Platforms tested:
FreeBSD 4.10 (sleipnir) w/parallel
Too minor to require h5committest
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New feature
Description:
Allow skip list keys to be strings (needed for property list support)
Platforms tested:
FreeBSD 4.10 (sleipnir)
Too minor to require h5committest
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New internal feature
Description:
Add a "release" routine to the skip lists, which releases all the nodes
in the skip list, but keeps the skip list active.
Platforms tested:
FreeBSD 4.10 (sleipnir)
Linux 2.4 (verbena)
Too minor to require h5committest
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Code optimization
Description:
Retarget metadata cache code from using TBBT routines to using new skiplist
routines, for a reasonable speedup (when dealing with dirty metadata)
Platforms tested:
FreeBSD 4.10 (sleipnir) w/parallel
Solaris 2.7 (arabica)
Too minor to require h5committest
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Bug fix
Description:
Re-work array of 'forward' pointers in a way that makes the PGI compiler
more happy.
Solution:
Change from 'H5SL_node_t *forward[1]' to 'H5SL_node_t **forward' and
change how array of forward pointers is dealt with.
Platforms tested:
Linux 2.4 (verbena) w/PGI
FreeBSD 4.10 (sleipnir)
Configuration not tested w/h5committest
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Bug fix
Description:
Correct off-by-on error which could cause invalid # of levels to be used
for a skip list node, in rare circumstances.
Change from srandom()/random() to more portable srand()/rand() routines
for random # generation.
Pre-compute the probability factor for computing the level of new nodes,
for a minor speedup.
Platforms tested:
FreeBSD 4.10 (sleipnir)
IRIX64 6.5 (modi4)
Solaris 2.8 (sol)
AIX 5.1(?) (copper)
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Add new internal data structure
Description:
Add an implementation of skip lists to the library (see comment in
src/H5SL.c for references to the papers describing them) as a potential
replacement for our current threaded, balanced binary tree container.
Skip lists are much simpler to implement and should be faster to use.
Also, added new error codes to release branch, so bump the minor version
number to indicate that the library is no longer perfectly compatible with
the 1.6.3 release.
Platforms tested:
FreeBSD 4.10 (sleipnir) w/parallel
Solaris 2.7 (arabica)
Too minor to require further testing (the skip lists aren't actually
used by any library code yet)
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