// Copy the ThreadContainer tree structure down into the underlying Threadable objects
// (Make the Threadable tree look like the ThreadContainer tree)
void flush() {
if (parent != null && threadable == null)
throw new RuntimeException("no threadable in " + this.toString());
parent = null;
if (threadable != null) threadable.setChild(child == null ? null : child.threadable);
if (child != null) {
child.flush();
child = null;
}
if (threadable != null) threadable.setNext(next == null ? null : next.threadable);
if (next != null) {
next.flush();
next = null;
}
threadable = null;
}
