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BuddyAllocator.h
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BuddyAllocator.h
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/*
* Copyright (C) 2012, the Simple Object Kernel project.
*
* BuddyAllocator.h: Small memory allocator based on buddy system algorithm.
* by Damien Dejean <djod4556@yahoo.fr>
*/
#ifndef _BUDDY_ALLOCATOR_H_
#define _BUDDY_ALLOCATOR_H_
#include <stdint.h>
#include <stddef.h>
/* Free block: self contained link to the next one ! */
struct freeblock {
struct freeblock *next;
};
class BuddyAllocator {
private:
/* Free area management */
struct freeblock *_freeAreas;
uint32_t _capacities;
/* Memory heap */
char *_heap;
uint32_t _heapSize;
/* Find the address of my buddy chunk */
void *myBuddyAddress(void *me, size_t mySize);
public:
BuddyAllocator(struct freeblock *freeAreas, /* Free area table */
uint32_t capacities, /* Number of free area sizes */
char *heap,
uint32_t heapSize);
/* Allocator implementation */
void *alloc(size_t size);
void free(void *chunk, size_t size);
/* Convenience */
uint32_t heapSize(void);
};
#endif /*_BUDDY_ALLOCATOR_H_ */