Specifying and checking semantic atomicity for multithreaded programs

12 years 8 months ago

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In practice, it is quite difﬁcult to write correct multithreaded programs due to the potential for unintended and nondeterministic interference between parallel threads. A fundamental correctness property for such programs is atomicity—a block of code in a program is atomic if, for any parallel execution of the program, there is an execution with the same overall program behavior in which the block is executed serially. We propose semantic atomicity, a generalization of atomicity with respect to a programmer-deﬁned notion of equivalent behavior. We propose an assertion framework in which a programmer can use bridge predicates to specify noninterference properties at l of abstraction of their application. Further, we propose a novel algorithm for systematically testing atomicity speciﬁcations on parallel executions with a bounded number of interruptions— i.e. atomic blocks whose execution is interleaved with that of other threads. We further propose a set of sound heuristics ...

Jacob Burnim, George C. Necula, Koushik Sen

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