EBK SOFTWARE ENGINEERING
10th Edition
ISBN: 9780133943238
Author: SOMMERVILLE
Publisher: PEARSON CO
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Chapter 21, Problem 21.1E
Explanation of Solution
Real-time systems using concurrent processes:
A real-time system is one where it has to respond within certain time limits.
Real time systems usually have to be implemented using concurrent processes due to the different types of stakeholder concern and the aspects supporting their implementation.
The different types of stakeholder concern and the aspects supporting their implementation are:
- Functional concerns are related to the specific functionality to be included in a system. The base system should implement core functionality and extensions implemented as aspects that can implement secondary functionality.
- Quality of service concern is related to non-functional behaviour of the system and aspects may be used to implement cross-cutting functionality such as cache which helps to meet these requirements.
- Policy concerns are related to overall policies that govern the use of system and by representing cross-cutting concerns as aspects which can be implemented.
- System concerns are related to attributes of the system as a whole and aspects may be used to implement monitoring that checks system attributes.
- Organizational concerns are related to organizational goals and priorities, aspects have limited usefulness in implementing these types of concerns.
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Take into consideration a system that has four resources of the same sort, all of which are shared across three processes, the maximum number of resources that any one process needs being two. Provide evidence that the system does not include any deadlocks.
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- The challenge of multitasking on a single system is challenging. Why not use a real-world scenario and a real-time machine to illustrate the issue?arrow_forwardWhat is the most significant factor to consider while transitioning from a serial processing system to a batch processing system?Your response must be supported by a justification.arrow_forwardExamine the benefits and drawbacks of concurrent programming in great depth. Interaction between processes and scheduling of processes are important considerations.arrow_forward
- 85. In Concurrent Development Model, event generated in process network trigger transitions among the a. phases b. states c. cells d. boundariesarrow_forwardWhat is the single most crucial consideration when managing complex real-time systems?arrow_forwardWhat is the single most important consideration for implementing hard real-time systems?arrow_forward
- How does a real-time system model differ from a general-purpose computing model, and what are the critical considerations in designing real-time systems?arrow_forwardConsider a multiprogramming or time sharing multi user system. Which issues related to the protection of processes need to be dealt with in this system?arrow_forwardGive an explanation as to why it is preferable to make use of the batch processing method rather than the time-sharing processing approach in specific situations.arrow_forward
- Talk about the benefits as well as the cons of using concurrent programming. Think about the dynamic relationship that exists between the processes and the scheduling of them.arrow_forwardIn a multiprogramming or time sharing multi user system. Which issues related to the protection of processes need to be dealt with in this system?arrow_forwardWhen subsystems of large computer processes and programs are divided into smaller units, do they make sense? What are the benefits of this way of system segmentation?arrow_forward
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