3 -v2.4.4 (October 13 2008)
4 * Corrected minor syntactic bug on statistic gathering code.
5 Reported by Tim Cussins and P. Mantegazza.
8 * Minor fixes to compile with the greenhills compiler.
9 Reported by "Kaya, Sinan SEA" <sinan.kaya@siemens.com>
10 * Small change in the license in order to include TLSF in the RTEMS
13 -v2.4.2 (May 16 2008) (Herman ten Brugge)
14 * Memory usage statistics added again, with cleaner and more compacted
17 -v2.4.1 (April 30 2008)
18 * Fixed a bug in the tlsf_realloc function: init the pool automatically
20 Reported by: Alejandro Mery <amery@geeks.cl>
23 * "rtl_*" functions renamed to "tlsf_*".
24 * Added the add_new_area function to insert new memory areas to an
26 * A single TLSF pool can manage non-contiguous memory areas.
27 * Support for mmap and sbrk added.
28 * The init_memory_pool is not longer needed when used on a system
30 * Removed the get_used_size counting.The same functionality can be
31 implemented outside the TLSF code.
34 * Minor cosmetic code improvements.
37 * Fixed some minor bugs in the version 2.3. Herman ten Brugge
38 <hermantenbrugge@home.nl>
40 -v2.3 (Jul 28 2007) Released a new version with all the contributions
41 received from Herman ten Brugge <hermantenbrugge@home.nl>
42 (This is his summary of changes in the TLSF's code):
43 * Add 64 bit support. It now runs on x86_64 and solaris64.
44 * I also tested this on vxworks/32 and solaris/32 and i386/32
46 * Remove assembly code. I could not measure any performance difference
47 on my core2 processor. This also makes the code more portable.
48 * Moved defines/typedefs from tlsf.h to tlsf.c
49 * Changed MIN_BLOCK_SIZE to sizeof (free_ptr_t) and BHDR_OVERHEAD to
50 (sizeof (bhdr_t) - MIN_BLOCK_SIZE). This does not change the fact
51 that the minumum size is still sizeof (bhdr_t).
52 * Changed all C++ comment style to C style. (// -> /* ... *./)
53 * Used ls_bit instead of ffs and ms_bit instead of fls. I did this to
54 avoid confusion with the standard ffs function which returns
56 * Created set_bit/clear_bit fuctions because they are not present
58 * Added locking support + extra file target.h to show how to use it.
59 * Added get_used_size function
60 * Added rtl_realloc and rtl_calloc function
61 * Implemented realloc clever support.
62 * Added some test code in the example directory.
64 -- Thank you very much for your help Herman!
67 * Support for ARMv5 implemented by Adam Scislowicz
68 <proteuskor@gmail.com>. Thank you for your contribution.
70 - v2.2.0 (Jun 30 2006) Miguel Masmano & Ismael Ripoll.
72 * Blocks smaller than 128 bytes are stored on a single
73 segregated list. The already existing bits maps and data
75 * Minor code speed-up improvements.
76 * Worst case response time both on malloc and free improved.
77 * External fragmantation also improved!.
78 * Segragared lists are AGAIN sorted by LIFO order. Version
79 2.1b was proven to be no better than 2.1.
81 - v2.1b: Allocation policy has been always a LIFO Good-Fit, that
82 is, between several free blocks in the same range, TLSF will
83 always allocate the most recently released. In this version of
84 TLSF, we have implemented a FIFO Good-Fit. However,
85 fragmentation doesn't seems to be altered so is it worth it?.
87 - v2.1: Realloc and calloc included again in TLSF 2.0.
89 - v2.0: In this version, TLSF has been programmed from scratch.
90 Now the allocator is provided as an unique file. Realloc and
91 calloc are not longer implemented.
94 - v1.4: Created the section "Version History". Studied real
95 behaviour of actual applications (regular applications tend
96 to require small memory blocks (less than 16 bytes) whereas
97 TLSF is optimised to be used with blocks larger than 16
98 bytes: Added special lists to deal with blocks smaller than
102 - v1.3: Change of concept, now the main TLSF structure is created
103 inside of the beginning of the block instead of being an
104 static structure, allowing multiple TLSFs working at the
105 same time. Now, TLSF uses specific processor instructions to
106 deal with bitmaps. TLSF sanity functions added to find TLSF
107 overflows. The TLSF code will not be RTLinux-oriented any
110 - v1.1 ... v1.2: Many little bugs fixed, code cleaned and splitted
111 in several files because of cosmetic requirements.
112 Starting from TLSF v1.1, MaRTE OS
113 (http://marte.unican.es) uses the TLSF allocator
114 as its default memory allocator.
116 - v0.1 ... v1.0: First implementations were created for testing and
117 research purposes. Basically TLSF is implemented to
118 be used by RTLinux-GPL (www.rtlinux-gpl.org), so
119 it is RTLinux-oriented.