public void setCell(long address, T data);
public long size();
+
+ /**
+ * Registers an observer to be notified when a memory cell is modified
+ */
+ public void registerObserver(MemoryObserver ob);
+
+ public void deregisterObserver(MemoryObserver ob);
+
+ public void notifyObservers(long address);
}
--- /dev/null
+package net.mograsim.machine;
+
+public interface MemoryObserver
+{
+ public void update(long address);
+}
import java.math.BigInteger;
import java.util.Arrays;
import java.util.HashMap;
+import java.util.HashSet;
+import java.util.Set;
import net.mograsim.logic.core.types.Bit;
import net.mograsim.logic.core.types.BitVector;
import net.mograsim.machine.MainMemory;
import net.mograsim.machine.MainMemoryDefinition;
+import net.mograsim.machine.MemoryObserver;
public class WordAddressableMemory implements MainMemory
{
private final long minimalAddress, maximalAddress;
private final MainMemoryDefinition definition;
private final int pageSize = 64;
+ private Set<MemoryObserver> observers = new HashSet<>();
private HashMap<Long, Page> pages;
if (p == null)
pages.put(page, p = new Page());
p.setCell(offset, b);
+ notifyObservers(address);
}
@Override
if (p == null)
pages.put(page, p = new Page());
p.setCellAsBigInteger(offset, word);
+ notifyObservers(address);
}
private class Page
{
return definition;
}
+
+ @Override
+ public void registerObserver(MemoryObserver ob)
+ {
+ observers.add(ob);
+ }
+
+ @Override
+ public void deregisterObserver(MemoryObserver ob)
+ {
+ observers.remove(ob);
+ }
+
+ @Override
+ public void notifyObservers(long address)
+ {
+ observers.forEach(ob -> ob.update(address));
+ }
}
import org.eclipse.jface.viewers.ILazyContentProvider;
import org.eclipse.jface.viewers.TableViewer;
import org.eclipse.jface.viewers.Viewer;
+import org.eclipse.swt.widgets.Display;
import net.mograsim.machine.MainMemory;
+import net.mograsim.machine.MemoryObserver;
-public class MemoryTableContentProvider implements ILazyContentProvider
+public class MemoryTableContentProvider implements ILazyContentProvider, MemoryObserver
{
private long lower;
private TableViewer viewer;
{
this.viewer = (TableViewer) viewer;
this.memory = (MainMemory) newInput;
+ if (oldInput != null)
+ ((MainMemory) oldInput).deregisterObserver(this);
+ if (memory != null)
+ memory.registerObserver(this);
setLowerBound(0L);
}
+
+ @Override
+ public void update(long address)
+ {
+ Display.getDefault().asyncExec(() -> updateElement((int) (address - lower)));
+ }
}
{
// Nothing to do here
}
-// fromText.setText(AsmNumberUtil.toString(BigInteger.valueOf(provider.getLowerBound()), NumberType.HEXADECIMAL));
});
Label amountLabel = new Label(parent, SWT.NONE);
{
// Nothing to do here
}
-// amountText.setText(Integer.toString(provider.getAmount()));
});
setupRadixSelector(parent);