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- /*
- ** 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://www.gii.upv.es/tlsf/main/docs
- **
- ** 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 copyright holder 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.
- */
- #pragma once
- #include <assert.h>
- #include <limits.h>
- #include <stddef.h>
- #include <stdio.h>
- #include <stdlib.h>
- #include <string.h>
- #include <stddef.h>
- #include "heap_tlsf_config.h"
- #if defined(__cplusplus)
- extern "C" {
- #endif
- /*
- ** Cast and min/max macros.
- */
- #define tlsf_cast(t, exp) ((t) (exp))
- #define tlsf_min(a, b) ((a) < (b) ? (a) : (b))
- #define tlsf_max(a, b) ((a) > (b) ? (a) : (b))
- /* A type used for casting when doing pointer arithmetic. */
- typedef ptrdiff_t tlsfptr_t;
- typedef struct block_header_t
- {
- /* Points to the previous physical block. */
- struct block_header_t* prev_phys_block;
- /* The size of this block, excluding the block header. */
- size_t size;
- /* Next and previous free blocks. */
- struct block_header_t* next_free;
- struct block_header_t* prev_free;
- } block_header_t;
- #include "heap_tlsf_block_functions.h"
- /* 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, size_t max_bytes);
- tlsf_t tlsf_create_with_pool(void* mem, size_t pool_bytes, size_t max_bytes);
- 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 size);
- void* tlsf_memalign(tlsf_t tlsf, size_t align, size_t size);
- void* tlsf_memalign_offs(tlsf_t tlsf, size_t align, size_t size, size_t offset);
- 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(tlsf_t tlsf);
- size_t tlsf_align_size(void);
- size_t tlsf_block_size_min(void);
- size_t tlsf_block_size_max(tlsf_t tlsf);
- size_t tlsf_pool_overhead(void);
- size_t tlsf_alloc_overhead(void);
- size_t tlsf_fit_size(tlsf_t tlsf, size_t size);
- /* 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
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