A concurrent temporal programming model with atomic blocks

  • Authors:

  • Xiaoxiao Yang;Yu Zhang;Ming Fu;Xinyu Feng

  • Affiliations:

  • State Key Laboratory of Computer Science, Institute of Software, Chinese Academy of Sciences, Beijing, China;State Key Laboratory of Computer Science, Institute of Software, Chinese Academy of Sciences, Beijing, China;University of Science and Technology of China, Hefei, China;University of Science and Technology of China, Hefei, China

  • Venue:
  • ICFEM'12 Proceedings of the 14th international conference on Formal Engineering Methods: formal methods and software engineering
  • Year:
  • 2012

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Abstract

Atomic blocks, a high-level language construct that allows programmers to explicitly specify the atomicity of operations without worrying about the implementations, are a promising approach that simplifies concurrent programming. On the other hand, temporal logic is a successful model in logic programming and concurrency verification, but none of existing temporal programming models supports concurrent programming with atomic blocks yet. In this paper, we propose a temporal programming model (αPTL) which extends the projection temporal logic (PTL) to support concurrent programming with atomic blocks. The novel construct that formulates atomic execution of code blocks, which we call atomic interval formulas, is always interpreted over two consecutive states, with the internal states of the block being abstracted away. We show that the framing mechanism in interval temporal logic also works in the new model, which consequently supports our development of an executive language. The language supports concurrency by introducing a loose interleaving semantics which tracks only the mutual exclusion between atomic blocks. We demonstrate the usage of αPTL by modeling practical concurrent programs.