#ifndef BUDDY_H
#define BUDDY_H

#include <stddef.h>
#include <stdint.h>

extern uintptr_t heap_start;
extern uintptr_t heap_end;

extern char __heap_start;
extern char __heap_end;

void  buddy_init(uintptr_t start, uintptr_t end);
void *buddy_alloc(size_t size);
int   buddy_free(void *ptr);

/* Returns total heap memory managed by buddy allocator in bytes */
static inline size_t buddy_total_bytes(void) {
    return (uintptr_t)&__heap_end - (uintptr_t)&__heap_start;
}

#endif // BUDDY_H