REAL-TIME SYSTEMS DESIGN AND ANALYSIS phần 10 potx

... communication: buffering data, 99 critical regions, 104 105 , 114, 118 kernels, functions in, 73 mailboxes, 102 104 queues, 104 ring buffers, 101 102 , 104 , 126 semaphores, 73, 105 –111, 119, 120–121, 143–145 significance ... Real-Time Systems Design and Analysis: An Engineer’s Handbook, Second Edition. IEEE Press, New York, 1997. [Laplante96a] Laplante, P., Stoyenko, A., an...

Ngày tải lên: 13/08/2014, 08:20

... the systems. This is a primary maxim of real-time systems design – to understand the basis and nature of the timing constraints, so that they can be relaxed if necessary. Many real-time systems ... 364 7.2.3 Analysis of Coroutines / 364 7.2.4 Analysis of Round-Robin Systems / 364 7.2.5 Response-Time Analysis for Fixed-Period Systems / 367 7.2.6 Response-Time Analysis:...

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... against object-oriented programming languages for real-time systems, however, are that they can lead to unpredictable and inefficient systems and that they are hard to optimize. The unpredictability ... object-oriented and procedural languages, and can be used either way, depending on the skill and preferences of the pro- grammer. Applicative languages such as LISP and Prolog...

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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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... 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 ... request table Task ID # Resource Status 100 Printer Has it 102 Mailbox 1 Has it 104 Mailbox 1 Pending 82 3 REAL-TIME OPERATING SYSTEMS void int3(void) /* int...

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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 1980s to account for system dynamics and use if for the specification of real-time systems. These approaches include Gomaa’s DARTS...

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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 ... made concerning responsibility fulfillment and assignment, system architecture and deployment, separation of concerns, and layering and modularization. Successful design is ac...

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... 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 messages as between m_PedestrianDetector[0] and ... Controller :IntersectionController m_Approach[0] :Approach m_Approach[1] :Approach m_Approach[2] :Approach m_Approach[3] :Approach m_PedestrianDetector[0] :OnOffSensor m...

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... dt + 10, 000  1.6 1 [(2 − t) − 1/4t] dt = 10, 000(3/4)  1 0 tdt+  1.6 1 dt − 10, 000(5/4)  1.6 1 tdt = 10, 000(3/8)t 2    1 0 + 10, 000(2)t    1.6 1 − 10, 000(5/8)t 2    1.6 1 = 10, 000(3/8) ... easier to read and understand and likely more reusable and maintainable. There are many different standards for coding that are language independent, or language specific. Cod...

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... in question. Routines 3 The sequences of bit patterns: 00000001, 00000 010, 0000 0100 , and 11111 110, 1111 1101 , 1111 1100 , 8.4 SYSTEMS INTEGRATION 427 Display Memory Bus Buffers Control Clock Logic SUT Figure ... information systems and therefore are not particularly applicable to many other systems, such as real-time, embedded, communications, and process control software....

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