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ABSTRACT

We introduce a thread colors model as a way to express design intent concerning the relationships between threads, executable code, and shared state. By expressing the model as annotations in code, it is possible to formally link the model with source code and to analyze the consistency of model and code in a composable manner. By using annotations as cut-points, APIs can be annotated and compliance with library threading policies can be evaluated. This is illustrated using case study examples from published code that show how thread coloring models can assist in assuring policy compliance and in identifying concurrency errors.

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INDEX TERMS

Primary Classification:
  D. Software
  D.1 PROGRAMMING TECHNIQUES
      D.1.3 Concurrent Programming

Additional Classification:
  D. Software
  D.2 SOFTWARE ENGINEERING
      D.2.1 Requirements/Specifications
          Subjects: Tools; Methodologies (e.g., object-oriented, structured)
      D.2.5 Testing and Debugging

General Terms:
Design, Reliability

Keywords:
Java, design intent, multi-threaded programming, race conditions