Eliminating Concurrency Bugs in Multithreaded Software: An Approach Based on Control of Petri Nets
نویسندگان
چکیده
We describe the Gadara project, a research effort whose goal is to eliminate certain classes of concurrency bugs in multithreaded software by controlling the execution of programs at run-time. The Gadara process involves three stages: modeling of the source code at compile time in the form of a Petri net, feedback control synthesis, and control logic implementation into the source code. The feedback control logic is synthesized using techniques from supervisory control of discrete event systems, where the specification captures the avoidance of certain types of concurrency bugs, such as deadlocks. We focus on the case of circularwait deadlocks in multithreaded programs employing mutual exclusion locks for shared data. The application of the Gadara methodology to other classes of concurrency bugs is briefly discussed.
منابع مشابه
Concurrency bugs in multithreaded software: modeling and analysis using Petri nets
In this paper, we apply discrete-event system techniques to model and analyze the execution of concurrent software. The problem of interest is deadlock avoidance in shared-memory multithreaded programs. We employ Petri nets to systematically model multithreaded programs with lock acquisition and release operations. We define a new class of Petri nets, called Gadara nets, that arises from this m...
متن کاملA rule-based evaluation of ladder logic diagram and timed petri nets for programmable logic controllers
This paper describes an evaluation through a case study by measuring a rule-based approach, which proposed for ladder logic diagrams and Petri nets. In the beginning, programmable logic controllers were widely designed by ladder logic diagrams. When complexity and functionality of manufacturing systems increases, developing their software is becoming more difficult. Thus, Petri nets as a high l...
متن کاملA Unified Approach to Eliminating Concurrency Bugs via Control Synthesis
Concurrency bugs threaten the safety of shared-memory multithreaded programs. The automated fixing techniques add new synchronization constructs; existing techniques may add too many synchronization constructs, sacrifice too much concurrency, or introduce deadlocks. The underlying problem is that existing techniques cannot simultaneously fix different bugs, especially different types of bugs, w...
متن کاملTime Management Approach on a Discrete Event Manufacturing System Modeled by Petri Net
Discrete event system, Supervisory control, Petri Net, Constraint This paper presents a method to manage the time in a manufacturing system for obtaining an optimized model. The system in this paper is modeled by the timed Petri net and the optimization is performed based on the structural properties of Petri nets. In a system there are some states which are called forbidden states an...
متن کاملFormal approach on modeling and predicting of software system security: Stochastic petri net
To evaluate and predict component-based software security, a two-dimensional model of software security is proposed by Stochastic Petri Net in this paper. In this approach, the software security is modeled by graphical presentation ability of Petri nets, and the quantitative prediction is provided by the evaluation capability of Stochastic Petri Net and the computing power of Markov chain. Each...
متن کامل