Cleaning up thread locals when counters/stacks hit zero

runtime/src/org/aspectj/runtime/internal/CFlowCounter.java

@@ -39,6 +39,9 @@ public class CFlowCounter {
 
     public void dec() {
     	flowHeightHandler.dec();
+    	if (!flowHeightHandler.isNotZero()) {
+    		flowHeightHandler.removeThreadCounter();
+    	}
     }
     
     public boolean isValid() {

runtime/src/org/aspectj/runtime/internal/CFlowStack.java

@@ -81,7 +81,11 @@ public class CFlowStack {
     }
 
     public void pop() {
-        getThreadStack().pop();
+        Stack s = getThreadStack();
+        s.pop();
+        if (s.isEmpty()) {
+        	stackProxy.removeThreadStack();
+        }
     }
 
     public Object peek() {

runtime/src/org/aspectj/runtime/internal/cflowstack/ThreadCounter.java

@@ -18,4 +18,5 @@ public interface ThreadCounter {
 	  public void          inc();
 	  public void          dec();
 	  public boolean isNotZero();
+	  public void removeThreadCounter();
 }

runtime/src/org/aspectj/runtime/internal/cflowstack/ThreadCounterImpl11.java

@@ -71,4 +71,8 @@ public class ThreadCounterImpl11 implements ThreadCounter {
 		return getThreadCounter().value!=0;
 	}
 
+	public void removeThreadCounter() {
+		// TODO 
+	}
+
 }

runtime/src/org/aspectj/runtime/internal/cflowstack/ThreadStack.java

@@ -18,5 +18,6 @@ import java.util.Stack;
 public interface ThreadStack {
 
 	public Stack getThreadStack();
+	public void removeThreadStack();
 
 }

runtime/src/org/aspectj/runtime/internal/cflowstack/ThreadStackFactoryImpl.java

@@ -23,6 +23,9 @@ public class ThreadStackFactoryImpl implements ThreadStackFactory {
 		public Stack getThreadStack() {
 			return (Stack)get();
 		}
+		public void removeThreadStack() {
+			this.remove();
+		}
 	}
 
 	public ThreadStack getNewThreadStack() {
@@ -38,6 +41,10 @@ public class ThreadStackFactoryImpl implements ThreadStackFactory {
 			return (Counter)get();
 		}
 		
+		public void removeThreadCounter() {
+			this.remove();
+		}
+		
 		public void inc() { getThreadCounter().value++; }
 		public void dec() { getThreadCounter().value--; }
 		public boolean isNotZero() { return getThreadCounter().value!= 0; }

runtime/src/org/aspectj/runtime/internal/cflowstack/ThreadStackImpl11.java

@@ -52,4 +52,8 @@ public class ThreadStackImpl11 implements ThreadStack {
 		return cached_stack;
 	}
 
+	public void removeThreadStack() {
+		// TODO
+	}
+
 }