* @param access access permissions
     */
    public RdmaMemoryRegion(ByteBuffer buffer, EnumSet<RdmaAccess> access) {
        this.buffer = buffer;
        this.accessFlags = access;
        this.localKey = generateLocalKey();
        this.remoteKey = generateRemoteKey();
        this.address = getBufferAddress(buffer);
        this.valid = true;
    }

    /**
     * Get the underlying buffer
     *

        super(buffer, access);
    }

    @Override
    public void invalidate() {
        // No real invalidation needed for TCP
        valid = false;
    }

    @Override
    protected int generateLocalKey() {
        return keyGenerator.getAndIncrement();
    }

    @Override
    protected int generateRemoteKey() {
        return keyGenerator.getAndIncrement();
    }

    @Override

            } finally {
                memoryRegister = null;
                valid = false;
            }
        }
    }

    @Override
    protected int generateLocalKey() {
        // In real implementation, this would get the local key from DiSNI:
        // return memoryRegister.getLkey();
        return keyGenerator.getAndIncrement();
    }

    @Override

    protected volatile boolean valid;
    
    public RdmaMemoryRegion(ByteBuffer buffer, EnumSet<RdmaAccess> access) {
        this.buffer = buffer;
        this.accessFlags = access;
        this.localKey = generateLocalKey();
        this.remoteKey = generateRemoteKey();
        this.address = getBufferAddress(buffer);
        this.valid = true;
    }
    
    public ByteBuffer getBuffer() {