120 lines
5.2 KiB
Text
120 lines
5.2 KiB
Text
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Version History
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---------------
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-v2.4.4 (October 13 2008)
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* Corrected minor syntactic bug on statistic gathering code.
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Reported by Tim Cussins and P. Mantegazza.
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-v2.4.3 (July 30 2008)
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* Minor fixes to compile with the greenhills compiler.
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Reported by "Kaya, Sinan SEA" <sinan.kaya@siemens.com>
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* Small change in the license in order to include TLSF in the RTEMS
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project.
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-v2.4.2 (May 16 2008) (Herman ten Brugge)
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* Memory usage statistics added again, with cleaner and more compacted
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code.
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-v2.4.1 (April 30 2008)
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* Fixed a bug in the tlsf_realloc function: init the pool automatically
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on the first call.
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Reported by: Alejandro Mery <amery@geeks.cl>
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-v2.4 (Feb 19 2008)
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* "rtl_*" functions renamed to "tlsf_*".
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* Added the add_new_area function to insert new memory areas to an
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existing memory pool.
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* A single TLSF pool can manage non-contiguous memory areas.
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* Support for mmap and sbrk added.
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* The init_memory_pool is not longer needed when used on a system
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with mmap or sbrk.
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* Removed the get_used_size counting.The same functionality can be
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implemented outside the TLSF code.
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-v2.3.2 (Sep 27 2007)
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* Minor cosmetic code improvements.
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-v2.3.1 (Jul 30 2007)
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* Fixed some minor bugs in the version 2.3. Herman ten Brugge
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<hermantenbrugge@home.nl>
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-v2.3 (Jul 28 2007) Released a new version with all the contributions
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received from Herman ten Brugge <hermantenbrugge@home.nl>
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(This is his summary of changes in the TLSF's code):
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* Add 64 bit support. It now runs on x86_64 and solaris64.
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* I also tested this on vxworks/32 and solaris/32 and i386/32
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processors.
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* Remove assembly code. I could not measure any performance difference
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on my core2 processor. This also makes the code more portable.
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* Moved defines/typedefs from tlsf.h to tlsf.c
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* Changed MIN_BLOCK_SIZE to sizeof (free_ptr_t) and BHDR_OVERHEAD to
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(sizeof (bhdr_t) - MIN_BLOCK_SIZE). This does not change the fact
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that the minumum size is still sizeof (bhdr_t).
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* Changed all C++ comment style to C style. (// -> /* ... *./)
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* Used ls_bit instead of ffs and ms_bit instead of fls. I did this to
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avoid confusion with the standard ffs function which returns
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different values.
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* Created set_bit/clear_bit fuctions because they are not present
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on x86_64.
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* Added locking support + extra file target.h to show how to use it.
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* Added get_used_size function
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* Added rtl_realloc and rtl_calloc function
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* Implemented realloc clever support.
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* Added some test code in the example directory.
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-- Thank you very much for your help Herman!
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-v2.2.1 (Oct 23 2006)
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* Support for ARMv5 implemented by Adam Scislowicz
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<proteuskor@gmail.com>. Thank you for your contribution.
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- v2.2.0 (Jun 30 2006) Miguel Masmano & Ismael Ripoll.
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* Blocks smaller than 128 bytes are stored on a single
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segregated list. The already existing bits maps and data
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structures are used.
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* Minor code speed-up improvements.
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* Worst case response time both on malloc and free improved.
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* External fragmantation also improved!.
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* Segragared lists are AGAIN sorted by LIFO order. Version
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2.1b was proven to be no better than 2.1.
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- v2.1b: Allocation policy has been always a LIFO Good-Fit, that
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is, between several free blocks in the same range, TLSF will
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always allocate the most recently released. In this version of
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TLSF, we have implemented a FIFO Good-Fit. However,
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fragmentation doesn't seems to be altered so is it worth it?.
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- v2.1: Realloc and calloc included again in TLSF 2.0.
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- v2.0: In this version, TLSF has been programmed from scratch.
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Now the allocator is provided as an unique file. Realloc and
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calloc are not longer implemented.
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- v1.4: Created the section "Version History". Studied real
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behaviour of actual applications (regular applications tend
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to require small memory blocks (less than 16 bytes) whereas
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TLSF is optimised to be used with blocks larger than 16
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bytes: Added special lists to deal with blocks smaller than
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16 bytes.
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- v1.3: Change of concept, now the main TLSF structure is created
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inside of the beginning of the block instead of being an
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static structure, allowing multiple TLSFs working at the
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same time. Now, TLSF uses specific processor instructions to
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deal with bitmaps. TLSF sanity functions added to find TLSF
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overflows. The TLSF code will not be RTLinux-oriented any
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more.
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- v1.1 ... v1.2: Many little bugs fixed, code cleaned and splitted
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in several files because of cosmetic requirements.
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Starting from TLSF v1.1, MaRTE OS
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(http://marte.unican.es) uses the TLSF allocator
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as its default memory allocator.
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- v0.1 ... v1.0: First implementations were created for testing and
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research purposes. Basically TLSF is implemented to
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be used by RTLinux-GPL (www.rtlinux-gpl.org), so
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it is RTLinux-oriented.
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