import java.lang.reflect.Field;
import jdk.internal.misc.Unsafe;


public class Sink {
    public int a;

    private static final Unsafe unsafe = Unsafe.getUnsafe();

    private static final long offset;
    private static final Sink theSink = new Sink();

    public static final Sink getSink() {
        return theSink;
    }

    static {
        try {
            Field field = Sink.class.getField("a");
            offset = unsafe.objectFieldOffset(field);
        } catch (Throwable t) {
            throw new RuntimeException(t);
        }
    }

    void drain(boolean b) {
        unsafe.putBoolean(this, offset, b);
    }

    void drain(int i) {
        unsafe.putInt(this, offset, i);
    }

    public static void main(String args[]) throws Exception {
        Sink s = Sink.getSink();
        s.drain(2);
        System.out.println(s.a);
        s.drain(true);
        System.out.println(s.a);
    }
}