Synthesis of fault-tolerant concurrent programs

Abstract

Methods for mechanically synthesizing concurrent programs from temporal logic specifications obviate the need to manually construct a program and compose a proof of its correctness [EC82, MW84, PR89, PR89b, AM94]. A serious drawback of extant synthesis methods, however, is that they produce concurrent programs for models of computation that are often unrealistic. In particular, these methods assume completely fault-free operation, i.e., the programs they produce are fault-intolerant. In this paper, we show how to mechanically synthesize fault-tolerant concurrent programs for various fault classes. We illustrate our method by synthesizing fault-tolerant solutions to the mutual exclusion and barrier synchronization problems.