Task parallelism is ubiquitous in modern applications for event-based, distributed, or reactive systems. In this type of programming, the ability to cancel a running task arises as a critical feature. Although there are a variety of cancellation techniques, a comprehensive account of their characteristics is missing. This paper provides a classification of task cancellation patterns, as well as...

We present early findings of two ongoing case studies in which we automatically extract reports about concurrency defects from the MySQL and Apache bug repositories. To mine the unstructured reports, we apply keyword search and machine learning, using linear and non-linear classifiers. We analyze the results in detail and suggest some improvements for this mining task. Automated Bug Report Clas...

Asynchronous Many-Task (AMT) runtime systems take advantage of multi-core architectures with light-weight threads, asynchronous executions, and smart scheduling. In this paper, we present the comparison AMT Charm++ HPX main stream MPI, OpenMP, MPI+OpenMP libraries using Task Bench benchmarks. is a parallel programming language based on C++, supporting stackless tasks as well threads asynchronou...

A version control mechanism is proposed that enhances the modularity and extensibility of multiversion concurrency control algorithms. We decouple the multiversion algorithms into two components: version control and concurrency control. This permits modular development of multiversion protocols, and simplifies the task of proving the correctness of these protocols. A set of procedures for versi...

Concurrency control is one of the important problems in operation systems. Various studies have been reported to present different algorithms to address this problem, although a few attempts have been made to represent an overall view of the characteristics of these algorithms and comparison of their capabilities to each other. This paper presents a survey of the current methods for controlling...

Time-critical scheduling in real-time database systems has two components: real-time transaction scheduling, which is related to task scheduling in realtime operating systems, and concurrency control, which can be considered as operation level scheduling. Most current research in this area only focuses on the transaction scheduling aspact while the concurrency control part remains untouched. In...