Conference PaperC11Tester: A race detector for C/C++ atomicsLuo, Weiyu; Demsky, BriannullWriting correct concurrent code that uses atomics under the C/C++ memory model is extremely difficult. We present C11Tester, a race detector for the C/C++ memory model that can explore executions in a larger fragment of the C/C++ memory model than previous race detector tools. Relative to previous work, C11Tester's larger fragment includes behaviors that are exhibited by ARM processors. C11Tester uses a new constraint-based algorithm to implement modification order that is optimized to allow C11Tester to make decisions in terms of application-visible behaviors. We evaluate C11Tester on several benchmark applications, and compare C11Tester's performance to both tsan11rec, the state of the art tool that controls scheduling for C/C++; and tsan11, the state of the art tool that does not control scheduling.2021-04-1710288002Proceedings of the 26th ACM International Conference on Architectural Support for Programming Languages and Operating Systems630 to 646https://doi.org/10.1145/3445814.34467112006948; 1703598; 1740210National Science Foundation