Check in "unique, but sharable" optimization to ISOHM code, which
allows object header messages that are only used in one object to remain in
the sole user's header, but migrates messages that are used in more than one
header into the ISOHM heap.
Tested on:
Mac OS X/32 10.4.9 (amazon)
FreeBSD/32 6.2 (duty)
Linux/32 2.6 (chicago)
Linux/64 2.6 (chicago2)
Check in changes from Elena and I to get pgcc compiler working again.
Primarily (all?) changes to move from using 'hsize_t' as array index to using
something else ('size_t') mostly.
Tested on:
Linux/32 2.4 kagiso w/pgcc
Move attribute tracking information out of object header prefix and
make it into a message that is inserted only when attributes are present on
the object.
Tested on:
FreeBSD/32 6.2 (duty)
The main purpose of this checkin was to eliminate the
space used for tracking creation time indices when there is no way they
can be used (i.e. attributes can't be shared in the file and the user hasn't
turned on attribute creation tracking), however there were some other minor
changes which crept in:
- Fix a cache locking deadlock when a shared attribute and one of its
components end up in the same fractal heap direct block.
(This is fixed the "slow" way for right now, until John has time
to add support for readers/writer locking to the cache.
- Optimize attribute copying when a copy will be kept during a v2 B-tree
search.
- When freeing a block on disk, attempt to merge it with the metadata
and "small data" aggregators.
Tested on:
Mac OS X/32 10.4.8 (amazon)
FreeBSD/32 6.2 (duty)
External links test in tsohm.c tries to open a target file the second time.
Therefore it fails for VMS.
Solution:
Commented out this test for VMS system.
Platforms tested:
VMS server and kagiso
sol's been having. When Express Testing (level 2 or 3) is enabled, the
test will no longer repeatedly close and re-open a file, which should work
better under AFS.
Tested on kagiso (extremely minor change, no new code introduced).
Tested platform:
Kagiso only since it is only a comment block change. If it works in one
machine, it should work in all, I hope. Still need to check the parallel
build on copper.
shared message rather than the full size of the unshared message, which
confused some shared message code.
Added a test that should make sure that some messages are too small to be
written to the deletion test in tsohm.c.
Also added a small optimization so that hash values don't need to be
calculated on deletes in list indexes.
Tested on Windows, smirom, and kagiso.
Move dataspace messages into new shared header message method calling
scheme.
Minor other cleanups, etc.
Tested on:
Linux/32 2.6 (chicago)
Linux/64 2.6 (chicago2)
Add "old" fill value messages to "new" fill value message sharing (and keep
them both in the same shared message index).
Tested on:
Linux/32 2.6 (chicago)
Linux/64 2.6 (chicago2)
Move fill value messages into new shared message method calling scheme.
Only update an opened dataset's fill value property if it's different from
the default fill value settings.
Tested on:
Linux/32 2.6 (chicago)
Linux/64 2.6 (chicago2)
Added can_share callback for OH messages. This determines whether the
message is allowed to be shared in the heap (committed and immutable datatypes
can't be).
Fixed a bug in the dense attribute storage that tried to open the shared message
heap when it hadn't been created yet.
Made the test to extend shared dataspace messages a bit more robust.
Refactored the code the searches a shared message list index to be a little
more efficient.
A few other minor changes.
Tested on smirom, kagiso, Windows, and juniper.
Moved SOHM table version out of table encoding and completely into superblock.
This is a file format change.
Added test that extends shared dataspaces. Dynamically allocate arrays in
shared message cache code. Clean up comments.
Tested on windows, kagiso, smirom.
Creating shared messages and then deleting them should return the file to its
original state.
Added a test for this.
Tested on Windows, smirom, and kagiso.
as complete as it could be, so I may add to it later.
Fixed a bug in reference counting messages that are referenced by shared
messages (attribute datatypes and dataspaces).
Tested on mir, smirom, and Windows.
VMS maintenance: updated command file with the new source files;
sohm test was failing on VMS due to upper case/lower case letters in
constant and variable names (i.e. FILENAME vs. filename); modified the test
to avoid confusion.
Platforms tested:
VMS server, kagiso
Take out separate memory type in the file for SOHM objects and create
aliases for existing memory types for SOHM use.
Tested on:
FreeBSD/32 4.11 (sleipnir)
to make the test pass.
These changes involve changes to the file format of SOHMs, but that's okay
because nobody should have been using SOHMs yet anyway.
Tested on Windows, kagiso, copper, and heping
Add src/H5Oalloc.c file forgotten in previous object header checkin
Break out more object header routines into separate file (debugging routines
this time).
Fix "//" style comment in recent ISOHM source changes.
Fix 'size_t' vs. 'unsigned' problem (visible in 64-bit testing) in recent
ISOHM test changes.
Tested on:
FreeBSD/32 4.11 (sleipnir)
Linux/32 2.4 (heping)
Linux/64 2.4 (mir)
version and size information into the superblock to eliminate a read when
loading it.
This is a file format change, and hopefully the last one (knock on wood).
Tested on kagiso and Windows (mostly just a SOHM change).
