1 | #ifndef INCLUDED_tlsf
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2 | #define INCLUDED_tlsf
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3 |
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4 | /*
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5 | ** Two Level Segregated Fit memory allocator, version 3.0.
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6 | ** Written by Matthew Conte, and placed in the Public Domain.
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7 | ** http://tlsf.baisoku.org
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8 | **
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9 | ** Based on the original documentation by Miguel Masmano:
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10 | ** http://rtportal.upv.es/rtmalloc/allocators/tlsf/index.shtml
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11 | **
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12 | ** Please see the accompanying Readme.txt for implementation
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13 | ** notes and caveats.
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14 | **
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15 | ** This implementation was written to the specification
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16 | ** of the document, therefore no GPL restrictions apply.
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17 | */
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18 |
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19 | #include <t_stddef.h>
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20 |
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21 | #if defined(__cplusplus)
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22 | extern "C" {
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23 | #endif
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24 |
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25 | /* tlsf_t: a TLSF structure. Can contain 1 to N pools. */
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26 | /* pool_t: a block of memory that TLSF can manage. */
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27 | typedef void* tlsf_t;
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28 | typedef void* pool_t;
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29 |
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30 | /* Create/destroy a memory pool. */
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31 | tlsf_t tlsf_create(void* mem);
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32 | tlsf_t tlsf_create_with_pool(void* mem, size_t bytes);
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33 | void tlsf_destroy(tlsf_t tlsf);
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34 | pool_t tlsf_get_pool(tlsf_t tlsf);
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35 |
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36 | /* Add/remove memory pools. */
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37 | pool_t tlsf_add_pool(tlsf_t tlsf, void* mem, size_t bytes);
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38 | void tlsf_remove_pool(tlsf_t tlsf, pool_t pool);
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39 |
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40 | /* malloc/memalign/realloc/free replacements. */
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41 | void* tlsf_malloc(tlsf_t tlsf, size_t bytes);
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42 | void* tlsf_memalign(tlsf_t tlsf, size_t align, size_t bytes);
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43 | void* tlsf_realloc(tlsf_t tlsf, void* ptr, size_t size);
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44 | void tlsf_free(tlsf_t tlsf, void* ptr);
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45 |
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46 | /* Returns internal block size, not original request size */
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47 | size_t tlsf_block_size(void* ptr);
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48 |
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49 | /* Overheads/limits of internal structures. */
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50 | size_t tlsf_size();
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51 | size_t tlsf_align_size();
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52 | size_t tlsf_block_size_min();
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53 | size_t tlsf_block_size_max();
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54 | size_t tlsf_pool_overhead();
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55 | size_t tlsf_alloc_overhead();
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56 |
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57 | /* Debugging. */
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58 | typedef void (*tlsf_walker)(void* ptr, size_t size, int used, void* user);
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59 | void tlsf_walk_pool(pool_t pool, tlsf_walker walker, void* user);
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60 | /* Returns nonzero if any internal consistency check fails. */
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61 | int tlsf_check(tlsf_t tlsf);
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62 | int tlsf_check_pool(pool_t pool);
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63 |
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64 | #if defined(__cplusplus)
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65 | };
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66 | #endif
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67 |
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68 | #endif
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