Real time systems design principles for distributed embedded applications by hermann kopetz

REAL-TIME SYSTEMS DESIGN AND ANALYSIS phần 1 potx

... xvii 1. 1 Terminology / 1. 1 .1 Systems Concepts / 1. 1.2 Real-Time Deﬁnitions / 1. 1.3 Events and Determinism / 1. 1.4 CPU Utilization / 10 1. 2 Real-Time System Design Issues / 12 1. 3 Example Real-Time ... Real-Time Systems / 13 1. 4 Common Misconceptions / 15 1. 5 Brief History / 16 1. 5 .1 Theoretical Advances / 17 1. 5.2 Early Systems / 17 1. 5.3 Hardware Developments / 18 1. 5.4 Early Software / 18 1. 5.5 ... Management / 12 9 3.4.9 Replacement Algorithms / 13 1 3.4 .10 Memory Locking / 13 2 3.4 .11 Working Sets / 13 2 3.4 .12 Real-Time Garbage Collection / 13 2 3.4 .13 Contiguous File Systems / 13 3 3.4 .14 Building...

REAL-TIME SYSTEMS DESIGN AND ANALYSIS phần 2 pptx

... avionics systems, and medical systems, and the real-time design issues are the same for them as they are for most other systems 2. 7 a OTHER SPECIAL DEVICES 59 b x1 x2 x3 x4 Figure 2. 24 A typical ... resultant and operandum as the same The 2- address instruction is of the form: op-code operandam, operandum As a mathematical function, the 2- address would be expressed as: operandum = op-code(operandam, ... Web research 2. 9 EXERCISES 71 2. 6 What special problems pipelined architectures pose for real-time system designers? Are they any different for non -real-time systems? 2. 7 Compare and contrast...

REAL-TIME SYSTEMS DESIGN AND ANALYSIS phần 3 docx

... 24 26 28 30 32 t2 Figure 3. 10 EDF task schedule for task set in Table 3. 4 Table 3. 4 Task set for example of EDF scheduling τi ei pi τ1 τ2 34 36 98 REAL-TIME OPERATING SYSTEMS Table 3. 5 Task set ... execution at t6 and lets 3 execute to completion at t7 Task 3 is then allowed to lock S1 , and subsequently S2 , and completes at t8 122 REAL-TIME OPERATING SYSTEMS 3. 3.10 .3 Basic Results ... priorities, and τ1 and 3 share some data or resource that requires 118 REAL-TIME OPERATING SYSTEMS Normal Execution Blocked t1 t2 t3 t0 t1 t2 t3 t4 t5 t6 t7 t8 Time Critical Section Figure 3. 16 A...

real time systems design and analysis phần 4 ppt

... 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, ... high-resolution interval timer structure: struct itimerspec{ struct timespec it_value, it_interval; }; int timer_settime (timer_t timerid, int flag, struct itimerspec *value, struct itimerspec *oldvalue); ... 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 (design approach for real- time systems) ...

REAL-TIME SYSTEMS DESIGN AND ANALYSIS phần 5 doc

... Event All Trafﬁc Standards/Display of Commanded Phase All Trafﬁc Standards/Display of Commanded Phase All Trafﬁc Standards/Display of Phase All Trafﬁc Standards/Display of commanded phase Intersection ... 2003 Real-Time Systems Design and Analysis, By Phillip A Laplante ISBN 0-471-22 855 -9  2004 Institute of Electrical and Electronics Engineers 2 25 226 SOFTWARE SYSTEM DESIGN While it is helpful to ... Wrong Way Figure 5. 5 Coupling and cohesion The right way: low coupling and high cohesion The wrong way: high coupling and low cohesion 5. 2 BASIC SOFTWARE ENGINEERING PRINCIPLES 2 35 desirable properties...

REAL-TIME SYSTEMS DESIGN AND ANALYSIS phần 6 docx

... Structured Analysis and Structured Design in Real-Time Applications There are several apparent problems in using structured analysis and structured design (SASD) to model the real-time systems, ... domain layer of design from concepts in domain model Design Model Design Figure 5.17 The UML and its role in speciﬁcation and design (Adapted from [Larman02]) 252 SOFTWARE SYSTEM DESIGN 5.5.3.1 ... suitable then SD for the embedded real-time systems and the inertial measure unit in particular SD and object-oriented design are often compared and contrasted, and, indeed, they are similar in...

REAL-TIME SYSTEMS DESIGN AND ANALYSIS phần 7 potx

... oriented and procedural Real-Time Systems Design and Analysis, By Phillip A Laplante ISBN 0- 471 -22855-9  2004 Institute of Electrical and Electronics Engineers 321 322 PROGRAMMING LANGUAGES AND THE ... divide-by-zero, and user-deﬁned ones The ability to deﬁne and handle exceptional conditions in the high-level language aids in the construction of interrupt handlers and other code used for real-time ... for real-time systems C# and the NET platform may not be appropriate for hard real-time systems for several reasons, including the unbounded execution of its garbage collected environment and...

REAL-TIME SYSTEMS DESIGN AND ANALYSIS phần 8 doc

... Raton, FL, 2003 Real-Time Systems Design and Analysis, By Phillip A Laplante ISBN 0-471-2 285 5-9  2004 Institute of Electrical and Electronics Engineers 351 352 PERFORMANCE ANALYSIS AND OPTIMIZATION ... m = 4, λ = 380 , and µ = 16.5; then p= ( 380 /16.5)4 /4! + ( 380 /16.5) + ( 380 /16.5)2 /2 + ( 380 /16.5)3 /3! + ( 380 /16.5)4 /4! = 0 .83 4 This means there is a potential for time overloading 83 .4% of the ... 0.174 0. 985 1.396 0.174 0. 985 8. 3 78 −0.500 0 .86 6 2.094 −0.500 0 .86 6 9.076 −0.940 0.342 2.793 −0.940 0.342 9.774 −0.940 −0.342 3.491 −0.940 −0.342 10.472 −0.500 −0 .86 6 4. 189 −0.500 −0 .86 6 11.170...

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 445 446 GLOSSARY ... where preliminary and ﬁnal documents are required and where additional documentation such as a hardware integration plan and software integration plan may be required Many software systems that interact ... in comments or documentation indicates a traceability conﬂict, which hints at other problems This is a primary lesson in using real-time systems design to understand the basis and nature of the...

REAL-TIME SYSTEMS DESIGN AND ANALYSIS phần 10 potx

... 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 ... Small computer systems interface (SCSI) Self-modifying code, 439 Self-testing, 84 Semaphores: binary, 106 109 counting, 107 109 deadlock situation, 112 deﬁned, 105 mailboxes and, 106 107 POSIX case ... Real-Time Systems Design and Analysis: An Engineer’s Handbook, Second Edition IEEE Press, New York, 1997 [Laplante96a] Laplante, P., Stoyenko, A., and Sinha, D Image Processing Methods: Real-Time...

The concise handbook of linux for embedded real time systems

... The Concise Handbook Of Linux for Embedded Real- Time Systems TimeSys Corporation Version 1.1 1-888-432 -TIME ©2002 TimeSys Corporation Pittsburgh, PA www.timesys.com Embedded Real- Time Systems ... • TimeSys Corporation About TimeSys Linux TimeSys Linux : an Embedded Real- Time OS Based on Linux TimeSys Linux is a Linux- based real- time operating system designed primarily for embedded systems ... 50,000 About TimeSys Linux • 15 TimeSys Linux in Embedded Systems TimeSys Linux was designed with the requirements of embedded systems in mind The small footprint and reliability of TimeSys Linux make...

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