Method put

src/com/sun/jna/WeakMemoryHolder.java:44–48

(Object o, Memory m)

    IdentityHashMap<Reference<Object>, Memory> backingMap = new IdentityHashMap<>();

    public synchronized void put(Object o, Memory m) {
        clean();
        Reference<Object> reference = new WeakReference<>(o, referenceQueue);
        backingMap.put(reference, m);
    }

    public synchronized void clean() {
        for(Reference ref = referenceQueue.poll(); ref != null; ref = referenceQueue.poll()) {