dmmlib/LeaHeader.h

#ifndef RA_LEAHEADER_H
#define RA_LEAHEADER_H

#include <stddef.h>

struct LeaHeader {
	size_t size;
	size_t prevSize;
};

typedef struct LeaHeader  leaHdr;
typedef struct LeaHeader* leaHdr_ptr;

//const unsigned int HDR_SIZE = sizeof(leaHdr);
#define HDR_SIZE sizeof(leaHdr)


//returns a pointer to the header of the block	
leaHdr * getHeader(const char * ptr);

void *getNext(void *ptr);

size_t getSize(void *ptr);

size_t getPrevSize (void *ptr);

void setSize(void *ptr, size_t sz);

void setPrevSize (void *ptr, size_t sz);

void markPrevFree (char * ptr);

void markPrevInUse (char * ptr);

size_t isPrevFree (char * ptr);

void markInUse (char * ptr);

void markFree (char * ptr);

size_t isFree (char * ptr);

#endif /*RA_LEAHEADER_H*/