Commit Graph

95 Commits

Author SHA1 Message Date
Vailin Choi
f08b8fa10e Enhancement to the tool h5clear (HDFFV-10360) 2018-03-12 09:02:15 -05:00
Vailin Choi
37318f109a Changes made based on code reviews. 2018-01-12 14:36:03 -06:00
Vailin Choi
fe70476a22 Initial checkin for library version bounds
Code changes to provide versioning support when adding to the enumerated defines for H5F_libver_t.
2017-10-03 14:57:36 -05:00
Larry Knox
89fbe00dec Merge pull request #426 in HDFFV/hdf5 from ~LRKNOX/hdf5_lrk:hdf5_1_10 to hdf5_1_10
* commit '54957d37f5aa73912763dbb6e308555e863c43f4':
  Commit copyright header change for src/H5PLpkg.c which was added after running script to make changes.
  Add new files in release_docs to MANIFEST. Cimmit changes to Makefile.in(s) and H5PL.c that resulted from running autogen.sh.
  Merge pull request #407 in HDFFV/hdf5 from ~LRKNOX/hdf5_lrk:hdf5_1_10_1 to hdf5_1_10_1
  Change copyright headers to replace url referring to file to be removed and replace it with new url for COPYING file.
2017-04-25 16:05:36 -05:00
Quincey Koziol
9c606c3d90 Revert "Switch h5clear for cache images to use existing H5Pget_cache_image_config()"
This reverts commit dd5105fc9912c77f6d6074700d83e5e8282e86c9.
2017-03-22 09:58:40 -07:00
Quincey Koziol
0313cbb91d Final merge of page buffering branch to develop 2017-03-13 21:30:37 -07:00
Quincey Koziol
1949d5756d Cache image feature and testing 2017-01-28 23:19:37 -08:00
Quincey Koziol
64a339183f Bring SWMR support in to the main development branch. (Finally!) More tests
and the tool and API wrappers will be coming in over the weekend.
2016-12-02 08:07:04 -08:00
Quincey Koziol
3b0c2b24da Bring over support for retrying metadata cache entry loads, along with all the
supporting metadata cache callback changes, etc.
2016-11-20 04:24:57 -08:00
Quincey Koziol
ed452ce690 Add cache logging property and file pieces. 2016-11-03 23:06:17 -07:00
Quincey Koziol
18ad868b23 [svn-r29924] Description:
Bring h5format_convert tool from revise_chunks branch to trunk.

Tested on:
    MacoSX/64 10.11.4 (amazon) w/serial, parallel & production
    (h5committest forthcoming)
2016-05-12 15:47:03 -05:00
Quincey Koziol
a6ce3d4e45 [svn-r29850] Description:
Bring H5DOappend(), H5P[s|g]et_object_flush_cb, and H5P[s|g]et_append_flush
from revise_chunks branch to trunk.  Brings along updated metadata cache
entry tagging, and the internal object flush routine.

Tested on:
    MacOSX/64 10.11.4 (amazon) w/serial, parallel & production
    (h5committest forthcoming)
2016-05-01 05:24:56 -05:00
Dana Robinson
0024745638 [svn-r29620] Merge of r29619 from revise_chunks. Minor H5Fpublic.h comment update.
Tested on: 64-bit Ubuntu 15.10 (build only, no code changes)
2016-04-04 16:01:45 -05:00
Quincey Koziol
bd44db8a3c [svn-r28894] Description:
Normalize against changes on phdf5_metadata_opt branch to trunk

Tested on:
    MacoSX/64 10.11.2 (amazon) w/serial & parallel
    (h5committest forthcoming)
2016-01-13 23:29:58 -05:00
Dana Robinson
bfa5786184 [svn-r26986] Removed H5F_ACC_DEBUG and H5FD_DEBUG functionality.
The H5F_ACC_DEBUG symbol remains but has been defined to zero and
has been listed as deprecated.

Fixes: HDFFV-1074

Tested on:
    h5committest
    32-bit Linux w/ C++ and Fortran and multi VFD
    32-bit Linux w/ C++ and Fortran and multi VFD (no deprec symbols)
2015-04-30 14:32:25 -05:00
Quincey Koziol
c2a9dcb897 [svn-r22219] Description:
Merge "file image" changes from feature branch back to trunk.

Tested on:
    Mac OSX/64 10.7.3 (amazon) w/debug
    (h5committest upcoming)
2012-03-31 03:49:35 -05:00
Mohamad Chaarawi
dd1b2c3208 [svn-r22115] Add 2 new API routines to set/unset file atomicity for files opened with the MPI-IO VFD
Add test cases for these two routines
Jira issue HDFFV-7961
2012-03-21 16:00:48 -05:00
Dana Robinson
db8ff8e4ec [svn-r20707] Added comments to the H5F_mem_t enumeration in H5Fpublic.h and the corresponding flavors[] array in the log VFD code. 2011-05-02 15:44:00 -05:00
Neil Fortner
ce35ebecfb [svn-r20491] Rename H5Frelease_file_cache to H5Fclear_elink_file_cache.
Tested: Fedora (too minor for full committest)
2011-04-13 16:03:30 -05:00
Neil Fortner
0863d30372 [svn-r20064] Purpose: Implement external file cache
Description:
Implements a cache of files opened through external links.  Adds the public
functions H5Pset_elink_file_cache_size(), H5Pget_elink_file_cache_size(), and
H5Frelease_file_cache().

Tested: jam, amani, heiwa (h5committest), fedora 64.
2011-02-08 12:32:56 -05:00
Quincey Koziol
9f90e06bd0 [svn-r18917] Description:
Bring r18911 (plus some adaptions to match the code on the trunk)
from the metadata journaling "merging" branch to the trunk:

	More general changes to align trunk with eventual changes from
metadata journaling branch.

Tested on:
        FreeBSD/32 6.3 (duty) in debug mode
        FreeBSD/64 6.3 (liberty) w/C++ & FORTRAN, in debug mode
        Linux/32 2.6 (jam) w/PGI compilers, w/default API=1.8.x,
                w/C++ & FORTRAN, w/threadsafe, in debug mode
        Linux/64-amd64 2.6 (amani) w/Intel compilers, w/default API=1.6.x,
                w/C++ & FORTRAN, in production mode
        Solaris/32 2.10 (linew) w/deprecated symbols disabled, w/C++ & FORTRAN,
                w/szip filter, in production mode
        Linux/64-ia64 2.6 (cobalt) w/Intel compilers, w/C++ & FORTRAN,
                in production mode
        Linux/64-amd64 2.6 (abe) w/parallel, w/FORTRAN, in debug mode
        Mac OS X/32 10.6.3 (amazon) in debug mode
        Mac OS X/32 10.6.3 (amazon) w/C++ & FORTRAN, w/threadsafe,
                in production mode
2010-05-27 15:27:13 -05:00
Quincey Koziol
1bc07c6aae [svn-r18031] Description:
Bring r18030 from merge_metadata_journaling branch to trunk:

	Bring "brush clearing" changes (whitespace & style issues, mostly) from
metadata_journaling branch to the "merging" branch, to converge the trunk and
the metadata_journaling branch.

	Also, some other minor cleanups along the way.

Tested on:
        FreeBSD/32 6.3 (duty) in debug mode
        FreeBSD/64 6.3 (liberty) w/C++ & FORTRAN, in debug mode
        Linux/32 2.6 (jam) w/PGI compilers, w/default API=1.8.x,
                w/C++ & FORTRAN, w/threadsafe, in debug mode
        Linux/64-amd64 2.6 (smirom) w/Intel compilers, w/default API=1.6.x,
                w/C++ & FORTRAN, in production mode
        Solaris/32 2.10 (linew) w/deprecated symbols disabled, w/C++ & FORTRAN,
                w/szip filter, in production mode
        Linux/64-ia64 2.6 (cobalt) w/Intel compilers, w/C++ & FORTRAN,
                in production mode
        Linux/64-ia64 2.4 (tg-login3) w/parallel, w/FORTRAN, in debug mode
        Linux/64-amd64 2.6 (abe) w/parallel, w/FORTRAN, in production mode
        Mac OS X/32 10.6.2 (amazon) in debug mode
        Mac OS X/32 10.6.2 (amazon) w/C++ & FORTRAN, w/threadsafe,
                in production mode
2009-12-17 17:21:08 -05:00
Quincey Koziol
77038a8175 [svn-r18030] Description:
Bring "brush clearing" changes (whitespace & style issues, mostly) from
metadata_journaling branch to the "merging" branch, to converge the trunk and
the metadata_journaling branch.

Tested on:
        FreeBSD/32 6.3 (duty) in debug mode
        FreeBSD/64 6.3 (liberty) w/C++ & FORTRAN, in debug mode
        Linux/32 2.6 (jam) w/PGI compilers, w/default API=1.8.x,
                w/C++ & FORTRAN, w/threadsafe, in debug mode
        Linux/64-amd64 2.6 (smirom) w/Intel compilers, w/default API=1.6.x,
                w/C++ & FORTRAN, in production mode
        Solaris/32 2.10 (linew) w/deprecated symbols disabled, w/C++ & FORTRAN,
                w/szip filter, in production mode
        Linux/64-ia64 2.6 (cobalt) w/Intel compilers, w/C++ & FORTRAN,
                in production mode
        Linux/64-ia64 2.4 (tg-login3) w/parallel, w/FORTRAN, in debug mode
        Linux/64-amd64 2.6 (abe) w/parallel, w/FORTRAN, in production mode
        Mac OS X/32 10.6.2 (amazon) in debug mode
        Mac OS X/32 10.6.2 (amazon) w/C++ & FORTRAN, w/threadsafe,
                in production mode
2009-12-17 10:07:35 -05:00
Quincey Koziol
37ec6dc75e [svn-r17582] Description:
Bring changes from file free space branch back to the trunk.  *yay!*

Tested on:
        FreeBSD/32 6.3 (duty) in debug mode
        FreeBSD/64 6.3 (liberty) w/C++ & FORTRAN, in debug mode
        Linux/32 2.6 (jam) w/PGI compilers, w/default API=1.8.x,
                w/C++ & FORTRAN, w/threadsafe, in debug mode
        Linux/64-amd64 2.6 (smirom) w/Intel compilers, w/default API=1.6.x,
                w/C++ & FORTRAN, in production mode
        Solaris/32 2.10 (linew) w/deprecated symbols disabled, w/C++ & FORTRAN,
                w/szip filter, in production mode
        Linux/64-ia64 2.6 (cobalt) w/Intel compilers, w/C++ & FORTRAN,
                in production mode
        Linux/64-ia64 2.4 (tg-login3) w/parallel, w/FORTRAN, in debug mode
        Linux/64-amd64 2.6 (abe) w/parallel, w/FORTRAN, in production mode
        Mac OS X/32 10.5.8 (amazon) in debug mode
        Mac OS X/32 10.5.8 (amazon) w/C++ & FORTRAN, w/threadsafe,
                in production mode
2009-10-01 21:08:59 -05:00
Quincey Koziol
e3f4e81b5f [svn-r17413] Description:
Remove vestigial intermediate routine for flushing file and move it
into API routine.  Also, remove private, unused (now) 'H5F_FLUSH_DOWN' symbol
from public header file.

Tested on:
        FreeBSD/32 6.3 (duty) in debug mode
        FreeBSD/64 6.3 (liberty) w/C++ & FORTRAN, in debug mode
        Linux/32 2.6 (kagiso) w/PGI compilers, w/C++ & FORTRAN, w/threadsafe,
                                in debug mode
        Linux/64-amd64 2.6 (smirom) w/Intel compilers w/default API=1.6.x,
                                w/C++ & FORTRAN, in production mode
        Solaris/32 2.10 (linew) w/deprecated symbols disabled, w/C++ & FORTRAN,
                                w/szip filter, in production mode
        Linux/64-ia64 2.6 (cobalt) w/Intel compilers, w/C++ & FORTRAN,
                                in production mode
        Linux/64-ia64 2.4 (tg-login3) w/parallel, w/FORTRAN, in production mode
        Linux/64-amd64 2.6 (abe) w/parallel, w/FORTRAN, in production mode
        Mac OS X/32 10.5.8 (amazon) in debug mode
        Mac OS X/32 10.5.8 (amazon) w/C++ & FORTRAN, w/threadsafe,
                                in production mode
2009-08-24 10:07:17 -05:00
Quincey Koziol
9d27b9765a [svn-r17313] Description:
Bring back various minor code cleanups from the file free space branch

Tested on:
        FreeBSD/32 6.3 (duty) in debug mode
        FreeBSD/64 6.3 (liberty) w/C++ & FORTRAN, in debug mode
        Linux/32 2.6 (kagiso) w/PGI compilers, w/C++ & FORTRAN, w/threadsafe,
                                in debug mode
        Linux/64-amd64 2.6 (smirom) w/Intel compilers w/default API=1.6.x,
                                w/C++ & FORTRAN, in production mode
        Solaris/32 2.10 (linew) w/deprecated symbols disabled, w/C++ & FORTRAN,
                                w/szip filter, in production mode
        Linux/64-ia64 2.6 (cobalt) w/Intel compilers, w/C++ & FORTRAN,
                                in production mode
        Linux/64-ia64 2.4 (tg-login3) w/parallel, w/FORTRAN, in production mode
        Linux/64-amd64 2.6 (abe) w/parallel, w/FORTRAN, in production mode
        Mac OS X/32 10.5.8 (amazon) in debug mode
        Mac OS X/32 10.5.8 (amazon) w/C++ & FORTRAN, w/threadsafe,
                                in production mode
2009-08-10 12:08:27 -05:00
Neil Fortner
d6da56adb7 [svn-r16281] Purpose: Add functions to allow more flexible traversal of external links.
Description: Added H5Pset/get_elink_cb to allow the user to specify a callback
function to be called whenever an external link is traversed.  Added
H5Pset/get_elink_acc_flags to allow the user to specify the file access flags
to use to open the target file of an external link.  All these properties are set on a LAPL.

Tested: jam, linew, smirom (h5committest)
2009-01-08 13:16:31 -05:00
Raymond Lu
6f5d0e22f3 [svn-r15704] I changed the return values of H5Fget_obj_ids and H5Fget_obj_count to ssize_t and modified
C++ and Fortran API functions.  This is for bug #1245. 

Tested on smirom, linew, and kagiso.
2008-09-26 13:55:32 -05:00
Quincey Koziol
7fc10c0ea7 [svn-r14413] Description:
Change H5P[gs]et_format_bounds() => H5P[gs]et_libver_bounds() and also
enumerated values H5F_FORMAT_{EARLIEST, LATEST} => H5F_LIBVER_{EARLIEST, LATEST}

Tested on:
        FreeBSD/32 6.2 (duty) in debug mode
        FreeBSD/64 6.2 (liberty) w/C++ & FORTRAN, in debug mode
        Linux/32 2.6 (kagiso) w/PGI compilers, w/C++ & FORTRAN, w/threadsafe,
                                in debug mode
        Linux/64-amd64 2.6 (smirom) w/default API=1.6.x, w/C++ & FORTRAN,
                                in production mode
        Linux/64-ia64 2.6 (cobalt) w/Intel compilers, w/C++ & FORTRAN,
                                in production mode
        Solaris/32 2.10 (linew) w/deprecated symbols disabled, w/C++ & FORTRAN,
                                w/szip filter, in production mode
        Mac OS X/32 10.4.10 (amazon) in debug mode
        Linux/64-ia64 2.4 (tg-login3) w/parallel, w/FORTRAN, in production mode
2008-01-14 18:49:12 -05:00
Quincey Koziol
35694d44ae [svn-r14362] Description:
Switched from "H5P[gs]et_latest_format" to "H5P[gs]et_format_bounds".

Tested on:
        FreeBSD/32 6.2 (duty) in debug mode
        FreeBSD/64 6.2 (liberty) w/C++ & FORTRAN, in debug mode
        Linux/32 2.6 (kagiso) w/PGI compilers, w/C++ & FORTRAN, w/threadsafe,
                                in debug mode
        Linux/64-amd64 2.6 (smirom) w/default API=1.6.x, w/C++ & FORTRAN,
                                in production mode
        Linux/64-ia64 2.6 (cobalt) w/Intel compilers, w/C++ & FORTRAN,
                                in production mode
        Solaris/32 2.10 (linew) w/deprecated symbols disabled, w/C++ & FORTRAN,
                                w/szip filter, in production mode
        Mac OS X/32 10.4.10 (amazon) in debug mode
        Linux/64-ia64 2.4 (tg-login3) w/parallel, w/FORTRAN, in production mode
2008-01-03 08:55:39 -05:00
Quincey Koziol
4be636f4f0 [svn-r13984] Description:
Various code cleanups and refactor recent changes for h5stat to fit
into the existing library data structures better.

Tested on:
	Mac OS X/32 10.4.10 (amazon)
	FreeBSD/32 6.2 (duty)
	Linux/32 2.6 (chicago)
	Linux/64 2.6 (chicago2)
2007-07-17 14:35:09 -05:00
Vailin Choi
d44b27ddcc [svn-r13978] purpose:
New feature.

Description:
Added routines to report on the amount of storage for:
1) 1.6 btree and heap storage info for groups
2) 1.8 btree, fractal heap storage info for groups, attributes and SOHM table
3) btree storage for chunked datasets
4) 1.8 superblock extension size.

Platform tested:
h5committested.
2007-07-13 16:12:25 -05:00
Quincey Koziol
1603adeaee [svn-r13291] Description:
Clean up comments

Tested on:
    Linux/32 2.6 (chicago)
    Linux/64 2.6 (chicago2)
2007-02-13 17:19:14 -05:00
Albert Cheng
ed7d456e51 [svn-r13253] Updated all C and C++ style source code files with the THG copyright notice.
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.
2007-02-07 09:56:24 -05:00
Quincey Koziol
2b635fee4d [svn-r12866] Description:
Clean up initialization of H5F & H5L APIs.

Tested on:
    Linux/64 2.6 (chicago2)
2006-11-06 12:47:02 -05:00
James Laird
9edac8a668 [svn-r12623] Added H5Fget_intent() function to get the "intent" of a file (read/write or
read-only).
Added this to external links, so that external files are opened with the
same intent as the source file.
Added tests.
2006-08-23 19:52:21 -05:00
Quincey Koziol
56e3f667d6 [svn-r11886] Purpose:
Code cleanup

Description:
    Check in some of the code cleanups from working on the external link
support.  (This doesn't include any of the external link features)

Platforms tested:
    FreeBSD 4.11 (sleipnir)
    Mac OSX.4 (amazon)
    Linux 2.4
2006-01-23 15:46:34 -05:00
Quincey Koziol
6b45f5172c [svn-r11245] Purpose:
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
2005-08-13 15:53:35 -05:00
Quincey Koziol
45bbf45250 [svn-r10837] Purpose:
Bug fix/new feature

Description:
    Setting "SEMI" or "STRONG" file close degrees causes problems when multiple
file IDs exist for the same file on disk.

Solution:
    Make the "SEMI" and "STRONG" settings only apply to the file ID that is
being closed.

    Also, add an "H5F_OBJ_LOCAL" flag for the H5Fget_obj_count() &
H5Fget_obj_ids() calls, so that applications can query about objects opened
with a particular file ID instead of all the objects opened in the file on
disk.

Platforms tested:
    FreeBSD 4.11 (sleipnir)
    h5committest
2005-06-01 16:20:10 -05:00
Raymond Lu
9cf358dbb8 [svn-r10776] Purpose: Bug fix
Description: See details from Bug #213.  Family member file size wasn't saved
anywhere in file.  When family file is opened, the first member size determine
the member size.

Solution:  This is the first step of fixing this bug.  Member size and name
template(unused at this stage) are saved in file superblock.  When file is reopened,
the size passed in through H5Pset_fapl_family is checked against the size saved
in superblock.  A different size will trigger a failure with an error message
indicating the right size.  Wrong driver to open family file will cause a failure,
too.

The second step will change multi driver that wrong driver will cause a failure.

Platforms tested: fuss and h5committest
2005-05-20 13:24:26 -05:00
John Mainzer
724cbc5615 [svn-r10717] Purpose:
Remove C99 types from new metadata cache related API calls
(take 2 -- missed one in the previous check in)


Description:

Windows (and perhaps others) don't like int32_t and int64_t.  While
we have dealt with the issue internally, it is more of a problem
in API calls.


Solution:

Convert int32_t to int and int64_t to long int in the new metadata
cache related API calls.


Platforms tested:

heping


Misc. update:
2005-05-02 16:36:43 -05:00
John Mainzer
a9ba92287d [svn-r10688] Purpose:
Add API calls allowing user control of the metadata cache.


Description:

Prior to this update, the metadata cache was not configurable
from outside the library.


Solution:

Add API calls allowing the user to configure the metadata cache
either at file open time, or for any open file.  Also added calls
permitting the user to monitor cache size and hit rate.  These
latter facilities are needed for "manual" cache size control


Platforms tested:

h5committested


Misc. update:
2005-04-28 11:40:07 -05:00
Quincey Koziol
427ff7da28 [svn-r9727] Purpose:
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:
2004-12-29 09:26:20 -05:00
Raymond Lu
c949e7c391 [svn-r8818]
Purpose:  Potential bug fix

Description:  In H5Fget_filesize, file size was returned as haddr_t.  Change it to hsize_t
and return it as parameter to make fortran interface easier.


Platforms tested:  fuss(simple change).
2004-07-07 12:03:02 -05:00
Raymond Lu
358b8545dd [svn-r8765] Purpose: New feature and its test.
Description:  Added new API H5Fget_name and new test program called filename.c.  This function
returns the name of the file by object ID(file, group, dataset, named datatype, and attribute)
which belongs to the file.


Platforms tested:  h5committest and fuss.

Misc. update:  MANIFEST and RELEASE.txt
2004-06-30 08:45:07 -05:00
Raymond Lu
a89057a2cd [svn-r8741] *** empty log message *** 2004-06-24 17:20:08 -05:00
Quincey Koziol
f766b32d07 [svn-r7559] Purpose:
Add feature

Description:
    Add H5Fget_freespace() routine, to check the amount of free space in a
    file.  This information is only valid until the file is closed currently,
    however (until we start recording the free space information in the file
    itself).

Platforms tested:
    FreeBSD 4.9 (sleipnir)
    h5committest
2003-10-07 08:32:32 -05:00
Quincey Koziol
d0d6ef4a90 [svn-r7057] Purpose:
Bug fix, refactored code

Description:
    Fixed closing objects for "strong" file degree, which previously would
sometime attempt to close the same object twice (when a named datatype and
a dataset which used it were both left open before the file was closed).

    Stopped datatype iteration from querying for the group entry of non-named
datatypes.

    Added attributes to the list of objects that can be queried by
H5Fget_obj_count and H5Fget_obj_ids, since they can hold open a file also.

    Took a suggestion from Robb to return the number of open objects
in the return values of H5Fget_obj_count and H5Fget_obj_ids.

    Also, added a "max_objs" parameter to the H5Fget_obj_ids function, so that
it can work well with staticly allocated arrays.


Platforms tested:
    FreeBSD 4.8 (sleipnir)
    h5committest
2003-06-18 15:50:22 -05:00
Bill Wendling
b5d7fa02a9 [svn-r6546] Purpose:
Update

Description:
    Updated copyright statement in files which hadn't been updated yet.

Platforms tested:
    Linux (Only comment change)

Misc. update:
2003-03-31 13:30:57 -05:00
Quincey Koziol
9a433b99a5 [svn-r6252] Purpose:
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
2003-01-09 12:20:03 -05:00