سیستم عامل با پشتیبانی از جایگزینی پویا و امن در سیستم های زمان واقعی

In the last decades solutions have been provided for the real- time component-based systems development as a base to increase productivity and reliability of their development as well as their maintenance. Solutions are increasingly appearing that allow controlled flexibility in these systems, aiming to support dynamic execution through the component replacement at run-time. So, component models are adapted trying to minimize conflicts integrating real-time and dynamic behaviors, and achieving components replacements in a bounded time. One of the main challenges for this is to calculate the required times by the different operations needed in a component replacement. The other issue is to know the operating times of the component in the system when their implementations change along the life of the system. In this work the implementation of a component framework implementation is described providing a partial solution for these problems. A component model is provided together with the corresponding algorithms to assure that components can be loaded and replaced at run-time without interfering in their execution deadlines. The model is designed to avoid failures during component replacements. Finally a validation of the presented concepts is provided.