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2005
IEEE

Fast Component Interaction for Real-Time Systems

10 years 5 months ago
Fast Component Interaction for Real-Time Systems
Open real-time systems provide for co-hosting hard-, soft- and non-real-time applications. Microkernel-based designs in addition allow for these applications to be mutually protected. Thus, trusted servers can coexist next to untrusted applications. These systems place a heavy burden on the performance of the message-passing mechanism, especially when based on microkernel-like inter-process communication. In this paper we introduce capacity-reserve donation (in short Credo), a mechanism for the fast interaction of interdependent components, which is applicable to common real-time resource-access models. We implemented Credo by extending L4’s message-passing mechanism to provide proper resource accounting and time-donation control, thereby preserving desired real-time properties. We were able to achieve priority inheritance and stackbased priority-ceiling resource sharing with virtually no overhead added to L4’s message-passing implementation. By providing a mechanism that does not...
Udo Steinberg, Jean Wolter, Hermann Härtig
Added 24 Jun 2010
Updated 24 Jun 2010
Type Conference
Year 2005
Where ECRTS
Authors Udo Steinberg, Jean Wolter, Hermann Härtig
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