1#ifndef INCLUDED_tlsf
2#define INCLUDED_tlsf
3
4/*
5** Two Level Segregated Fit memory allocator, version 3.1.
6** Written by Matthew Conte
7** http://tlsf.baisoku.org
8**
9** Based on the original documentation by Miguel Masmano:
10** http://www.gii.upv.es/tlsf/main/docs
11**
12** This implementation was written to the specification
13** of the document, therefore no GPL restrictions apply.
14**
15** Copyright (c) 2006-2016, Matthew Conte
16** All rights reserved.
17**
18** Redistribution and use in source and binary forms, with or without
19** modification, are permitted provided that the following conditions are met:
20** * Redistributions of source code must retain the above copyright
21** notice, this list of conditions and the following disclaimer.
22** * Redistributions in binary form must reproduce the above copyright
23** notice, this list of conditions and the following disclaimer in the
24** documentation and/or other materials provided with the distribution.
25** * Neither the name of the copyright holder nor the
26** names of its contributors may be used to endorse or promote products
27** derived from this software without specific prior written permission.
28**
29** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
30** ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
31** WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
32** DISCLAIMED. IN NO EVENT SHALL MATTHEW CONTE BE LIABLE FOR ANY
33** DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
34** (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
35** LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
36** ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
37** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
38** SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
39*/
40
41#include <stddef.h>
42
43#include <QtCore/qtconfigmacros.h>
44
45QT_BEGIN_NAMESPACE
46
47namespace QtPrivate {
48
49/* tlsf_t: a TLSF structure. Can contain 1 to N pools. */
50/* pool_t: a block of memory that TLSF can manage. */
51typedef void* tlsf_t;
52typedef void* pool_t;
53
54/* Create/destroy a memory pool. */
55tlsf_t tlsf_create(void* mem);
56tlsf_t tlsf_create_with_pool(void* mem, size_t bytes);
57void tlsf_destroy(tlsf_t tlsf);
58pool_t tlsf_get_pool(tlsf_t tlsf);
59
60/* Add/remove memory pools. */
61pool_t tlsf_add_pool(tlsf_t tlsf, void* mem, size_t bytes);
62void tlsf_remove_pool(tlsf_t tlsf, pool_t pool);
63
64/* malloc/memalign/realloc/free replacements. */
65void* tlsf_malloc(tlsf_t tlsf, size_t bytes);
66void* tlsf_memalign(tlsf_t tlsf, size_t align, size_t bytes);
67void* tlsf_realloc(tlsf_t tlsf, void* ptr, size_t size);
68void tlsf_free(tlsf_t tlsf, void* ptr);
69
70/* Returns internal block size, not original request size */
71size_t tlsf_block_size(void* ptr);
72
73/* Overheads/limits of internal structures. */
74size_t tlsf_size(void);
75size_t tlsf_align_size(void);
76size_t tlsf_block_size_min(void);
77size_t tlsf_block_size_max(void);
78size_t tlsf_pool_overhead(void);
79size_t tlsf_alloc_overhead(void);
80
81/* Debugging. */
82typedef void (*tlsf_walker)(void* ptr, size_t size, int used, void* user);
83void tlsf_walk_pool(pool_t pool, tlsf_walker walker, void* user);
84/* Returns nonzero if any internal consistency check fails. */
85int tlsf_check(tlsf_t tlsf);
86int tlsf_check_pool(pool_t pool);
87
88} // namespace QtPrivate
89
90QT_END_NAMESPACE
91
92#endif
93

source code of qtmultimedia/src/3rdparty/tlsf/tlsf.h