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* [svn-r8946] Purpose:Quincey Koziol2004-07-261-2/+2
| | | | | | | | | | | | | | | | | | Code cleanup, sorta Description: Added ifdef sections for "H5_USING_PURIFY" in various places in the code, which are designed to reduce the spurious "uninitialized memory read" warnings from purify which are actually OK. Note that this macro will have to be turned on by adding it to the CFLAGS for the build - I didn't think it was important enough to add a configure flag for. Also, the changes in H5HG.c optimize the walks through the objects in a heap to only look at the 'used' entries instead of all the 'allocated' entries. Platforms tested: Solaris 2.7 (arabica) w/purify Not tested by h5committest
* [svn-r8922] Purpose: Restore the original codeRaymond Lu2004-07-211-1/+1
| | | | | | | | Description: Line 38, "#define H5_NO_FREE_LISTS" were commented out during debugging Solution: put back in. Platforms tested: No test needed
* [svn-r8921] Purpose: new featureRaymond Lu2004-07-211-1/+1
| | | | | | | | | | | | | | Description: This is the second step of checkin for encoding and decoding objects. H5Tencode and H5Tdecode have been committed in the previous step. H5Sencode and H5Sdecode are checked in this time. Solution: Given object ID, these functions encode and decode object information into and from binary buffer and return new object ID. They take advantage of the existing codes of object header message and encode in the same format. Platforms tested: fuss and h5committest. Misc. update: RELEASE.txt
* [svn-r8301] Purpose:Quincey Koziol2004-04-061-14/+73
| | | | | | | | | | | | | Code optimization Description: Move handling for free list arrays that have no maximum size to separate set of routines and optimize computations for free list arrays with maximum size to avoid re-computing sizes all the time. Platforms tested: h5committest Solaris 2.7 (arabica)
* [svn-r7988] Purpose:Quincey Koziol2003-12-291-1/+1
| | | | | | | | | | | Bug fixes & code cleanup Description: Back out some of the debugging that was inadvertently checked in recently. Platforms tested: FreeBSD 4.9 (sleipnir) too minor to require h5committest
* [svn-r7984] Purpose: bug fixRaymond Lu2003-12-291-1/+1
| | | | | | | Description: VL datatype fails in certain way(hard to describe) Platforms tested: h5committest
* [svn-r6936] Purpose:Quincey Koziol2003-05-311-3/+3
| | | | | | | | | | | | | | | Bug fix Description: When free lists where disabled, the macros for array free list operations could possibly expand in ways that allowed incorrect numbers of objects to be operated on. Solution: Put parentheses around macro arguments when performing operations with them. Platforms tested: h5committestted (although Fortran tests failed for some reason)
* [svn-r6546] Purpose:Bill Wendling2003-03-311-4/+14
| | | | | | | | | | | | Update Description: Updated copyright statement in files which hadn't been updated yet. Platforms tested: Linux (Only comment change) Misc. update:
* [svn-r6278] Purpose:Quincey Koziol2003-01-141-30/+51
| | | | | | | | | | | | Code cleanup Description: Add 'H5_DLL' macro to H5FL macros, in order to allow Windows builds to work. Platforms tested: FreeBSD 4.7 (sleipnir) Visual Studio 6.0
* [svn-r6252] Purpose:Quincey Koziol2003-01-091-9/+29
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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-r5959] Raymond Lu2002-10-041-0/+1
| | | | | | | Purpose: Performance improvement for compact dataset. Platforms tested: Linux 2.2(eirene), Solaris 2.7(arabica), IRIX64 6.5(modi4)
* [svn-r5931] MuQun Yang2002-09-201-11/+11
| | | | | | | | | | | | 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-r5787] Purpose:Quincey Koziol2002-07-121-1/+1
| | | | | | | | | | Update code Description: Re-enable free-lists, which were accidentally disabled from last checkin. Platforms tested: FreeBSD 4.6 (sleipnir)
* [svn-r5785] Purpose:Quincey Koziol2002-07-121-0/+37
| | | | | | | | | | Code update Description: Re-arrange to disable free-list code in a more transparent way. Platforms tested: FreeBSD 4.6 (sleipnir)
* [svn-r4978] Purpose:Quincey Koziol2002-02-171-1/+1
| | | | | | | | Code cleanup Description: Cleanup compiler warnings found by the SGI compiler and gcc 3.0 Platforms tested: FreeBSD 4.5 w/gcc 3.0 (hack) && IRIX64 (modi4)
* [svn-r4842] Purpose:Quincey Koziol2002-01-171-20/+9
| | | | | | | | | | | | Feature improvement Description: Re-write how the free-list headers were used, to reduce the amount of space added to each malloc request. Reduced header for array and block free list items from 24 bytes to 8 bytes and eliminated the header for fixed-size free list items entirely. This should reduce the amount of memory that the library uses. Platforms tested: FreeBSD 4.5 (sleipnir) & IRIX64 6.5 (modi4)
* [svn-r4355] Purpose:Quincey Koziol2001-08-141-15/+15
| | | | | | | | | | | | | | | | | | | | | | 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-r4038] Purpose:Quincey Koziol2001-06-211-11/+11
| | | | | | | | | | | | | Code clean/bug fix Description: H5FL (free-list manager) code currently is taking an hsize_t as the size of a memory block to allocate. On many machines, the size of an hsize_t is greater than the size of a size_t, potentially leading to incorrect memory allocations in rare circumstances. Solution: Changed hsize_t parameters and variables to size_t. Platforms tested: FreeBSD 4.3 (hawkwind)
* [svn-r3781] Purpose:Bill Wendling2001-04-051-3/+3
| | | | | | | | | | | | | | | | | | 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 Koziol2001-01-091-7/+7
| | | | | | | | | | | | | 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-r3236] Purpose:Quincey Koziol2001-01-041-4/+4
| | | | | | | | Clean up code. Description: Cleaned up various compiler warnings. Platforms tested: FreeBSD 4.2 (hawkwind)
* [svn-r2711] Purpose:Quincey Koziol2000-10-201-1/+1
| | | | | | | | | | | | Bug fix. Description: When the maximum number of elements in a fixed size, free-list managed array was allocated, the free-list code was writing off the end of the array. Solution: Changed definition of free-list managed arrays to allocate correct space for the array. Platforms tested: Solaris 2.5 (baldric) w/Purify
* [svn-r2470] Changed parameter type from uintn to size_t to clear up some ↵Quincey Koziol2000-08-081-2/+2
| | | | warnings.
* [svn-r2459] Added public API function (H5set_free_list_limits) to allow ↵Quincey Koziol2000-08-041-0/+2
| | | | | | | | limits to be placed on how much memory is used by the free lists before they are garbage collected. The default is to have no limit, with garbage collection only occurring when they cannot allocate memory.
* [svn-r2453] Made free-list code garbage collect if it runs out memory during ↵Quincey Koziol2000-08-011-12/+12
| | | | | | | a memory allocation & attempt to allocate the memory once more. Also re-named a bunch of private functions & structures to align with other function names.
* [svn-r2446] Some small performance improvements to various allocations and ↵Quincey Koziol2000-07-281-1/+2
| | | | calculations.
* [svn-r2445] Check in initial coding effort for automatically garbage ↵Quincey Koziol2000-07-271-4/+6
| | | | | | | | collecting the free lists. Each kind of list one has hard-coded limits on when to garbage collect, which will be replaced with user-controllable knobs (through property list settings, I think) once I finish debugging some related performance problems.
* [svn-r2165] Fixed last batch of problems when using free-lists on the SGI ↵Quincey Koziol2000-04-201-3/+12
| | | | | | machines. They should (hopefully) work on all platforms again now.
* [svn-r2073] Added free-list code to the library and took out the older ↵Quincey Koziol2000-04-041-0/+173
"temporary buffer" code, since the functionality was superceded. See the followup document for details on the free-list code.
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