4 research outputs found
Modular termination verification for non-blocking concurrency
© Springer-Verlag Berlin Heidelberg 2016.We present Total-TaDA, a program logic for verifying the total correctness of concurrent programs: that such programs both terminate and produce the correct result. With Total-TaDA, we can specify constraints on a thread’s concurrent environment that are necessary to guarantee termination. This allows us to verify total correctness for nonblocking algorithms, e.g. a counter and a stack. Our specifications can express lock- and wait-freedom. More generally, they can express that one operation cannot impede the progress of another, a new non-blocking property we call non-impedance. Moreover, our approach is modular. We can verify the operations of a module independently, and build up modules on top of each other
Modular termination veri cation for non-blocking concurrency (extended version)
We present Total-TaDA, a program logic for verifying the total correctness of concurrent programs: that such programs both terminate and produce the correct result. With Total-TaDA, we can specify constraints on a thread's concurrent environment that are necessary to guarantee termination. This allows us to verify total correctness for nonblocking algorithms, e.g. a counter and a stack. Our speci cations can express lock- and wait-freedom. More generally, they can express that one operation cannot impede the progress of another, a new non-blocking property we call non-impedance. Moreover, our approach is modular. We can verify the operations of a module independently, and build up modules on top of each other
TaDA Live: Compositional Reasoning for Termination of Fine-grained Concurrent Programs
We introduce TaDA Live, a separation logic for reasoning compositionally
about the termination of blocking fine-grained concurrent programs. The logic
contributes several innovations to obtain modular rely/guarantee style
reasoning for liveness properties and to blend them with logical atomicity. We
illustrate the subtlety of our specifications and reasoning on some
paradigmatic examples.Comment: 24 pages, 97 pages including appendi