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Integrated management of priority inversion in Real-Time Mach

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4 Author(s)
Nakajima, T. ; Japan Adv. Inst. of Sci. & Technol., Japan ; Kitayama, T. ; Arakawa, H. ; Tokuda, H.

Synchronization and communication are two common sources of priority inversion which may make the behavior of systems unpredictable and unanalyzable. In microkernel-based systems, they are heavily used for building operating system servers and decomposing applications into several tasks. The management of priorities in IPC and synchronization should be integrated using a uniform mechanism since priority inversion occurs if such integration is not supported. Also, a highly preemptable server structure should be provided because the execution in a server may take up too much time. We propose an integrated real-time resource management model, and a real-time server model which solve the above problems. We implemented and evaluated the models in Real-Time Mach using a uniform mechanism. Our approach enables us to build operating system servers and to decompose applications into several tasks without incurring priority inversion

Published in:

Real-Time Systems Symposium, 1993., Proceedings.

Date of Conference:

1-3 Dec 1993