c++, protocol

1.common class to keep reference count
2.common class to stackup or organize similar objects
3.common class that helps to minimize operations, and demux all operations through a single interface
4.contexts to define an operations ... the operation parameters will be symmetrical across but the context determines what is done

1.context contains src,sink and signature routine that is overloaded and takes a event pointer or void args
2.it moves the data in units , minimal transition in a system
3.All layers are contexts,has a default signature functions
4.a layer has a chain of contexts each having the signature function
5.when the source to signature function is null the signature function may be in a demux context