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6.1. Evaluation Criteria
Concurrent Programming Concepts benefit from the OMOP To demonstrate
the benefits of the OMOP, this chapter argues that it simplifies the
implementation of supported concurrent programming concepts by solving
the problems implementers face when they use common ad hoc approaches.
This discussion relies on the problems identified in Sec. 3.3. For each of the
problems, it illustrates how it is solved using the OMOP and shows the improvements
over existing ad hoc solutions. This comparison shows the benefits
of the OMOP by showing that it solved the implementation challenges
language implementers are facing when they target today’s VMs.
The evaluation discusses how the OMOP addresses these problems as part
of three case studies in Sec. 6.2. These case studies are the implementation
of Clojure agents, an STM system, and event-loop actors. They are chosen
to cover all of the identified problems and all mechanisms provided by the
OMOP. Furthermore, the characteristics of the three implemented concurrent
programming concepts are sufficiently different from each other to discuss
the OMOP and the problems it addresses from different angles. Therefore,
the case studies provide the necessary foundation to fully evaluate the OMOP
and its benefits.
Fulfillment of Requirements Sec. 3.4 identified concrete requirements as a
foundation for the design of the OMOP. This evaluation discusses these requirements
as part of the three case studies in Sec. 6.2. For each case study
the section evaluates which mechanisms the case study requires and how it
maps onto the OMOP. Furthermore, to demonstrate the fulfillment of the requirements
the discussion includes the evaluation criteria Sec. 3.4 stated for
each of the requirements.
To complete the discussion of how the OMOP fulfills its requirements,
Sec. 6.3 discusses the concepts from which the requirements were initially
derived. For each of these concepts, it evaluates the degree to which it is supported
by the OMOP. The evaluation differentiates between concepts where
the main aspects are covered and concepts where only some aspects are supported
by the OMOP to assess the extent to which the concepts benefit. Even if
only some of the concept’s aspects are supported, the benefits are substantial,
since the OMOP addresses common implementation challenges.
Applicability Sec. 6.4 assesses the applicability of the OMOP by showing
that its use does not increase the implementation size for the supported concurrent
programming concepts.
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