#include <string.h>
#include <stdlib.h>

struct heap_node
{
	struct heap_node *next;
	size_t size;
};

struct heap_head
{
	struct heap_node *first;
	size_t total_bytes;
	size_t ready_bytes;
};

void *malloc(size_t size)
{
	(void)size;
	return nullptr;
}

void *calloc(size_t count, size_t size)
{
	void *block = malloc(count * size);

	if (block != nullptr)
	{
		memset(block, 0, count * size);
	}

	return block;
}

void free(void *block)
{
	(void)block;
}