Abstract
Based on the analysis of the limitations of existing Real Time Specification for Java(RTSJ) and developing models,we designed a CER-Java developing model,which can be used to develop embedded high-reliability real-time systems.The model adopted a three-layer developing architecture,including Creation Layer,Execution Layer and Recycle Layer.The Creation Layer created and started various groups of threads and objects.The Execution Layer executed threads that had been started.The Recycle Layer recovered the memory that was no longer in use.The practice shows that the mechanisms,such as the three-layer developing architecture,creating various groups of threads and the periodic garbage collection,etc,not only guarantee the predictability of a system,but also reduce memory usage and simplify the complexity of model.
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