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Add tlsf.h, tlsf.c, version 3.1.
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matthew conte
2016-04-10 15:02:17 -07:00
parent 265a6c3798
commit 8b7c441ecf
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#ifndef INCLUDED_tlsf
#define INCLUDED_tlsf
/*
** Two Level Segregated Fit memory allocator, version 3.1.
** Written by Matthew Conte
** http://tlsf.baisoku.org
**
** Based on the original documentation by Miguel Masmano:
** http://rtportal.upv.es/rtmalloc/allocators/tlsf/index.shtml
**
** This implementation was written to the specification
** of the document, therefore no GPL restrictions apply.
**
** Copyright (c) 2006-2016, Matthew Conte
** All rights reserved.
**
** Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions are met:
** * Redistributions of source code must retain the above copyright
** notice, this list of conditions and the following disclaimer.
** * Redistributions in binary form must reproduce the above copyright
** notice, this list of conditions and the following disclaimer in the
** documentation and/or other materials provided with the distribution.
** * Neither the name of the <organization> nor the
** names of its contributors may be used to endorse or promote products
** derived from this software without specific prior written permission.
**
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
** ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
** WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
** DISCLAIMED. IN NO EVENT SHALL MATTHEW CONTE BE LIABLE FOR ANY
** DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
** (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
** LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
** ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
** SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <stddef.h>
#if defined(__cplusplus)
extern "C" {
#endif
/* tlsf_t: a TLSF structure. Can contain 1 to N pools. */
/* pool_t: a block of memory that TLSF can manage. */
typedef void* tlsf_t;
typedef void* pool_t;
/* Create/destroy a memory pool. */
tlsf_t tlsf_create(void* mem);
tlsf_t tlsf_create_with_pool(void* mem, size_t bytes);
void tlsf_destroy(tlsf_t tlsf);
pool_t tlsf_get_pool(tlsf_t tlsf);
/* Add/remove memory pools. */
pool_t tlsf_add_pool(tlsf_t tlsf, void* mem, size_t bytes);
void tlsf_remove_pool(tlsf_t tlsf, pool_t pool);
/* malloc/memalign/realloc/free replacements. */
void* tlsf_malloc(tlsf_t tlsf, size_t bytes);
void* tlsf_memalign(tlsf_t tlsf, size_t align, size_t bytes);
void* tlsf_realloc(tlsf_t tlsf, void* ptr, size_t size);
void tlsf_free(tlsf_t tlsf, void* ptr);
/* Returns internal block size, not original request size */
size_t tlsf_block_size(void* ptr);
/* Overheads/limits of internal structures. */
size_t tlsf_size();
size_t tlsf_align_size();
size_t tlsf_block_size_min();
size_t tlsf_block_size_max();
size_t tlsf_pool_overhead();
size_t tlsf_alloc_overhead();
/* Debugging. */
typedef void (*tlsf_walker)(void* ptr, size_t size, int used, void* user);
void tlsf_walk_pool(pool_t pool, tlsf_walker walker, void* user);
/* Returns nonzero if any internal consistency check fails. */
int tlsf_check(tlsf_t tlsf);
int tlsf_check_pool(pool_t pool);
#if defined(__cplusplus)
};
#endif
#endif