REAL-TIME SYSTEMS DESIGN AND ANALYSIS phần 9 doc

... (editor-in-chief), CRC Press, Boca Raton, FL, 2001. Real-Time Systems Design and Analysis, By Phillip A. Laplante ISBN 0-471-22855 -9  2004 Institute of Electrical and Electronics Engineers 445 420 8 ENGINEERING ... information systems and therefore are not particularly applicable to many other systems, such as real-time, embedded, communications, and process control sof...

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... preemptive-priority, or combination systems, although it is generally 130 3 REAL-TIME OPERATING SYSTEMS internal and external fragmentation hamper efficient memory usage and ulti- mately degrade real-time performance ... at t 6 and lets τ 3 execute to completion at t 7 .Taskτ 3 is then allowed to lock S 1 , and subsequently S 2 ,and completes at t 8 . 3.1 REAL-TIME KERNELS 8...

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... outstanding commercial software. Real-time engineers know that their systems are frequently subject to changes in hardware, algorithms, and even application. Therefore these systems must be designed ... illustrated in Figure 7 and Figure 8 below. 4′ Vmax Vmax Vmax 2′ 8′ Vmax = 65 mph 1′ NOT PRESENT PRESENT D = 9 ft V max = 65 mph = 95 .3 ft/s T present = D / V max = (9 ft)/ (95...

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... through Figure 9. 264 5 SOFTWARE SYSTEM DESIGN Same messages as between m_VehicleTrafficStandard[0] and m_Approach[0]. Same messages as between m_PedestrianTrafficStandard[0] and m_Approach[0]. Same ... Controller :IntersectionController m_Approach[0] :Approach m_Approach[1] :Approach m_Approach[2] :Approach m_Approach[3] :Approach m_PedestrianDetector[0] :OnOffSensor m_PedestrianDete...

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... 0.05 399 1. Recalculation of the buffer size now yields B(0.05 399 1) =  0.05 399 1 0 [p(t) − c(t)] dt = 10,000  0.05 399 1 0 [t −1/4t] dt = 10,000(3/4)  0.05 399 1 0 tdt = 10,000(3/8)t 2    0.05 399 1 0 = ... of 98 % and the rate-monotonic theorem, this seems reasonable. 396 7 PERFORMANCE ANALYSIS AND OPTIMIZATION a=2.0*a*4; b=d sqrt(a); } } 7. 19 What unique challenges are pr...

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... Fragmentation / 393 7 .9 Exercises / 393 8 Engineering Considerations 397 8.1 Metrics / 397 8.1.1 Lines of Code / 397 8.1.2 McCabe’s Metric / 398 8.1.3 Halstead’s Metrics / 399 8.1.4 Function ... Techniques / 3 89 7.6.18 Combination Effects / 390 7.6. 19 Speculative Execution / 391 7.7 Analysis of Memory Requirements / 391 7.8 Reducing Memory Utilization / 392 7.8.1 Variable S...

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... applications, including image processing, avionics systems, and medical systems, and the real-time design issues are the same for them as they are for most other systems. 44 2 HARDWARE CONSIDERATIONS FFFFFFFF FFFFFF00 FFFFFE00 FFC00000 DMA Memory-mapped ... (opcode) field and zero or more operand fields. The opcode is typically the starting address of a lower-level pro- gram store...

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... complex diagrams. 4.5 STRUCTURED ANALYSIS AND DESIGN Methods for structured analysis and structured design (SASD) have evolved over almost 30 years and are widely used in real-time applications, probably ... structured analysis emerged in the 198 0s to account for system dynamics and use if for the specification of real-time systems. These approaches include Gomaa’s DART...

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... LANGUAGES AND THE SOFTWARE PRODUCTION PROCESS including various dialects of C, C++, C#, Java, Fortran, Pascal, Ada 95 , assembly language, and even Visual BASIC, and Basic. Of this list C++, Java, and ... Ada 95 has elements of both object-oriented and procedural languages, and can be used either way, depending on the skill and preferences of the pro- grammer. Applicative lang...

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... 199 9 Embedded Systems Conference,San Jose, CA, September 199 9. [Stimler 69] Stimler, S. Real-Time Data-Processing Systems. McGraw-Hill, New York, 196 9. [Stoyenko96] Stoyenko, A., Marlowe, T., and ... 79, Number 9, September 199 1, pp. 1 293 –1304. [Bowen95] Bowen, J. P. and Hinchey, M. G. “Ten Commandments of Formal Methods.” IEEE Computer, Volume 28, Number 4, April 199 5, pp. 5...

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