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#ifndef MEM_FRAMER_H
#define MEM_FRAMER_H
#include <rt.h>
#include "allocator.h"
/* Represents a free frame as part of the freelist, this is done
in order to avoid having to do annoying casts */
typedef struct mem_framer_freed {
struct mem_framer_freed *next;
} MemFramerFreed;
/* Allocator for frames: aligned regions of memory of same size */
typedef struct mem_framer {
MemAllocator allocator;
/* The next frame to be given off to the caller
in case the freelist is empty */
usize next;
/* The end of the region covered by the memory allocator */
usize end;
/* The address of the last frame that has been added in
the freelist
NOTE: the freelist is a singly-linked list comprising
all frames that have been previously allocated
and then freed */
MemFramerFreed *free;
/* The size of a frame. This value also defines the alignment
that the frames must respect */
uint blksz;
} MemFramer;
MemFramer *mem_framer_install(void *addr, usize end, uint blksz);
void *mem_framer_alloc(MemAllocator *self, usize n);
void mem_framer_free(MemAllocator *self, void *ptr);
#endif
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