typedef struct {
    unsigned int retainCount;
    void       * data;
} MemoryObject;

bool initVM(void)
{
    MemoryObject * o;
    if (o->retainCount == 0) {
        return true;
    } else {
        return false;
    }
}

void *allocate(size_t size)
{
    MemoryObject * o;
    char         * ptr;
    o = (MemoryObject *)calloc(sizeof(MemoryObject) + size, 1);
    ptr = (char *)o;
    ptr += sizeof(MemoryObject);
    o->retainCount = 1;
    o->data = ptr;
    return (void *)ptr;
}

bool release(void* memory)
{
    MemoryObject * o;
    char         * cptr;
    cptr = (char *)memory;
    cptr -= sizeof(MemoryObject);
    o = (MemoryObject *)cptr;
    o->retainCount--;
    if (o->retainCount == 0) {
        free(o);
        return true;
    } else {
        return false;
    }
}

void Retain(void * ptr)
{
    MemoryObject * o;
    char         * cptr;

    cptr = (char *)ptr;
    cptr -= sizeof(MemoryObject);
    o = (MemoryObject *)cptr;

    o->retainCount++;
}