1  Version History
2  ---------------
3
4
5  -v2.4.6 (September 10 2009)
6	* Fixed a bug in the realloc func (discovered by the rockbox
7  	  project: www.rockbox.org).
8
9
10  -v2.4.5 (November 24 2008)
11	* Working on OSX/FreeBSD (may be for OpenBSD/NetBSD too).
12	  Reported by Younès HAFRI.
13          printf (and stdio.h include) is now optional.
14	  Reported by Masaki Muranaka
15
16  -v2.4.4 (October 13 2008)
17	* Corrected minor syntactic bug on statistic gathering code.
18 	  Reported by Tim Cussins and P. Mantegazza.
19
20  -v2.4.3 (July 30 2008)
21	* Minor fixes to compile with the greenhills compiler.
22	  Reported by "Kaya, Sinan SEA" <sinan.kaya@siemens.com>
23	* Small change in the license in order to include TLSF in the RTEMS
24	  project.
25
26  -v2.4.2 (May 16 2008) (Herman ten Brugge)
27	* Memory usage statistics added again, with cleaner and more compacted
28	  code.
29
30  -v2.4.1 (April 30 2008)
31	* Fixed a bug in the tlsf_realloc function: init the pool automatically
32	  on the first call.
33	  Reported by: Alejandro Mery <amery@geeks.cl>
34
35  -v2.4  (Feb 19 2008)
36	* "rtl_*" functions renamed to "tlsf_*".
37	* Added the add_new_area function to insert new memory areas to an
38  	  existing memory pool.
39	* A single TLSF pool can manage non-contiguous memory areas.
40	* Support for mmap and sbrk added.
41	* The init_memory_pool is not longer needed when used on a system
42	  with mmap or sbrk.
43	* Removed the get_used_size counting.The same functionality can be
44	implemented outside the TLSF code.
45
46  -v2.3.2 (Sep 27 2007)
47  	* Minor cosmetic code improvements.
48
49  -v2.3.1 (Jul 30 2007)
50        * Fixed some minor bugs in the version 2.3. Herman ten Brugge
51	     <hermantenbrugge@home.nl>
52
53  -v2.3 (Jul 28 2007) Released a new version with all the contributions
54        received from Herman ten Brugge <hermantenbrugge@home.nl>
55        (This is his summary of changes in the TLSF's code):
56        * Add 64 bit support. It now runs on x86_64 and solaris64.
57        * I also tested this on vxworks/32 and solaris/32 and i386/32
58          processors.
59        * Remove assembly code. I could not measure any performance difference
60          on my core2 processor. This also makes the code more portable.
61        * Moved defines/typedefs from tlsf.h to tlsf.c
62        * Changed MIN_BLOCK_SIZE to sizeof (free_ptr_t) and BHDR_OVERHEAD to
63         (sizeof (bhdr_t) - MIN_BLOCK_SIZE). This does not change the fact
64         that the minumum size is still sizeof (bhdr_t).
65        * Changed all C++ comment style to C style. (// -> /* ... *./)
66        * Used ls_bit instead of ffs and ms_bit instead of fls. I did this to
67          avoid confusion with the standard ffs function which returns
68          different values.
69        * Created set_bit/clear_bit fuctions because they are not present
70          on x86_64.
71        * Added locking support + extra file target.h to show how to use it.
72        * Added get_used_size function
73        * Added rtl_realloc and rtl_calloc function
74        * Implemented realloc clever support.
75        * Added some test code in the example directory.
76
77	-- Thank you very much for your help Herman!
78
79  -v2.2.1 (Oct 23 2006)
80        * Support for ARMv5 implemented by Adam Scislowicz
81	  <proteuskor@gmail.com>. Thank you for your contribution.
82
83  - v2.2.0 (Jun 30 2006) Miguel Masmano & Ismael Ripoll.
84
85	* Blocks smaller than 128 bytes are stored on a single
86	  segregated list. The already existing bits maps and data
87	  structures are used.
88	* Minor code speed-up improvements.
89	* Worst case response time both on malloc and free improved.
90	* External fragmantation also improved!.
91	* Segragared lists are AGAIN sorted by LIFO order. Version
92	  2.1b was proven to be no better than 2.1.
93
94  - v2.1b: Allocation policy has been always a LIFO Good-Fit, that
95	   is, between several free blocks in the same range, TLSF will
96	   always allocate the most recently released. In this version of
97	   TLSF, we have implemented a FIFO Good-Fit. However,
98	   fragmentation doesn't seems to be altered so is it worth it?.
99
100  - v2.1:  Realloc and calloc included again in TLSF 2.0.
101
102  - v2.0:  In this version,  TLSF has been programmed  from scratch.
103	   Now the allocator is provided as an unique file. Realloc and
104           calloc are not longer implemented.
105
106
107  - v1.4:  Created  the   section  "Version  History".   Studied  real
108           behaviour of actual applications (regular applications tend
109           to require small memory blocks (less than 16 bytes) whereas
110           TLSF is  optimised to  be used with  blocks larger  than 16
111           bytes: Added special lists to deal with blocks smaller than
112           16 bytes.
113
114
115  - v1.3: Change  of concept, now  the main TLSF structure  is created
116          inside of  the beginning  of the block  instead of  being an
117          static  structure, allowing  multiple TLSFs  working  at the
118          same time.  Now, TLSF uses specific processor instructions to
119          deal with bitmaps.  TLSF sanity functions added to find TLSF
120          overflows.  The  TLSF code will not  be RTLinux-oriented any
121          more.
122
123  - v1.1 ...  v1.2: Many little  bugs fixed, code cleaned and splitted
124                    in several files because of cosmetic requirements.
125                    Starting     from    TLSF    v1.1,     MaRTE    OS
126                    (http://marte.unican.es)  uses the  TLSF allocator
127		    as its default memory allocator.
128
129  - v0.1 ... v1.0: First  implementations were created for testing and
130		   research purposes.  Basically TLSF is implemented to
131                   be used by  RTLinux-GPL  (www.rtlinux-gpl.org),  so
132                   it  is RTLinux-oriented.
133