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Advantages of Implementing the IMultithreaded* Interfaces
Reduces calls to class.instanceOf()
IMultithreaded* allows the running portal to minimize the number of calls to class.newInstance(), because this call happens once per channel class name and then, for IMultithreadeds, the instantiated class instance is stored in a static Map so that from then on it can be looked up by String class name. Map lookup, wrapper instantiation, and channel state object instantation do not add up to quite as much performance cost as does the class.instanceOf() excecution. However, the performance difference is negligible, may be outweighed by the additional runtime costs of IMultihreaded in channel state map synchronization and access costs, and all of this will be drowned out by the other costly operations involved in running the portal (executing transforms, database access, serializing the output, doing whatever valuable thing your channel does, etc.)
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