RealTime Software Engineering

1
Real-Time Software Engineering

• Brian Glaz
• CSC 34001 / Programming in the Large
• 5/01/07
• Instructor Dr. Pulimood

2
What is Real-Time Software Engineering?

• Dependent upon time constraints
• System fails if deadlines are not met
• Real-Time VS Non Real-Time
• Soft Hard Systems
• Live audio visual feed
• Braking system in a car

3
Characteristic of a Real-Time System

• Portability
• Considers target hardware
• Timeliness
• Service Time
• Latency
• Dynamic Structure

4
Comparison to OOP

• Basic concepts of OOP still apply
• Added dimension of time
• More extensive testing
• Stronger emphasis on test cases
• Shared data records
• Harder to duplicate errors

5
Real-Time Design Methods

• ROOM
• Real-Time Object-Oriented Modeling
• MASCOT
• Modular Approach to Software Construction
  Operation and Test
• Used by Britains ministry of defense
• HOOD
• Hierarchical Object Oriented Design
• Designed for European Space Agency

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Challenges of Real-Time Engineering

• Dynamic Scheduling Memory Allocation
• Priorities and Multiprogramming
• Interrupts
• Queues and Overloading
• Multiprocessing
• Organization and Data Storage

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Necessity for High Reliability

• Less human interaction
• Harder to detect errors
• Typical applications of real-time systems
• Nuclear power plants
• Monitoring train tracks

8
Personal Commentary

• High Responsibility unknowingly given to
  real-time systems
• Significance of coding errors