Prioritized access arbitration to shared resources on integrated software systems in multicore environments

Abstract

In the past few decades the extent of automotive software based functionalities has grown continuously. More recently this has applied in particular to automotive infotainment systems, which are available for all classifications of cars nowadays. A change in that process of growth is not foreseeable. Concurrently, formerly distributed functionalities are now integrated into a common hardware platform. The demand for the computational power of future infotainment systems will be countered with multicore hardware platforms. These allow the parallel computation of a rising number of independently developed software components. This constitutes both new opportunities and challenges. One of the latter is to integrate software components with different temporal requirements on a common hardware platform, which compete for shared system resources. In the following an approach is presented, that supports the development and integration process by use of static priorities to manage the access to shared resources from in-parallel executed components. The applicability is demonstrated through the use of a prototypical implementation.