Concepts, Techniques, and Models of Computer Programming - Chapter 8 pdf

... the NewActive function of Section 7 .8. The active object has two internal methods, Unlockall and Trans, and five external methods, newtrans, getlock, savestate, commit,andabort. Figures 8. 22 and 8. 23 show ... requires the read- operation-write sequence to be atomic. • Figure 8. 8 shows a concurrent version of the stateful queue, using a lock to ensure atomicity of the read-op...

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... Algol-60 and structured programming [46, 45, 130], which led to Simula-67 and object-oriented program- ming [137, 152]. 2 This book sticks to the traditional usage of declarative as stateless and ... the operations of the abstract data type. This idea is at the heart of object-oriented programming, a powerful programming style that is elaborated in Chapter 7. The present c...

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... 574 8 Shared-State Concurrency 577 8. 1 Theshared-stateconcurrentmodel 581 8. 2 Programmingwithconcurrency 581 8. 2.1 Overviewofthedifferentapproaches 581 8. 2.2 Usingtheshared-statemodeldirectly 585 8. 2.3 ... Theshared-stateconcurrentmodel 580 8. 2 Differentapproachestoconcurrentprogramming 582 8. 3 Concurrentstack 586 8. 4 Thehierarchyofatomicactions 588 8. 5 Differencesbetweenatom...

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... 81 699 2 388 5 62667 00490 71596 82 643 81 621 4 685 9 296 38 95217 59999 32299 156 08 94146 39761 565 18 286 25 36979 2 082 7 22375 82 511 85 210 91 686 40000 00000 00000 00000 00000 Copyright c  200 1-3 by P. ... 27132 50 388 75 582 923 78 923 78 75 582 50 388 27132 116 28 387 6 969 171 19 1] Is this answer correct? How can you tell? It looks right: it is symmetric (reversing...

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... of many other techniques. This book focuses on three in particu- lar: object-oriented programming, graphical user interface (GUI) design, and component-based programming. In object-oriented programming, ... with single-shot channels. Chapters 4 and 5 show other types of channels (with sequences of messages) and do concurrent composition of processes. Copyright c  200 1-3 b...

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... instead of standard lists: • Flatten of nil is X#X (empty difference list). • Flatten of X|Xr where X is a nested list, is Y1#Y4 where flatten of X is Y1#Y2, flatten of Xr is Y3#Y4 ,and equate Y2 and ... arguments IsDone and Transform are given one-argument functions. Passing functions as arguments to functions is part of a range of programming techniques called higher-order...

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... introduces the lazy concurrent model and gives some of the most important programming techniques, including lazy streams and list compre- hensions. • Soft real-time programming. Section 4.6 explains ... roots of declarative concurrency. Concurrency is also a key part of three other chapters. Chapter 5 extends the eager model of the present chapter with a simple kind of...

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... in the larger context of component-based programming. Because of message-passing concurrency we no longer have the limitations of the synchronous “lock-step” execution of Chapter 4. We first introduce ... called with a list of procedures, each of which adds X to Copyright c  200 1-3 by P. Van Roy and S. Haridi. All rights reserved. 3 58 Message-Passing Concurrency In the m...

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... was much ahead of its time and had little immediate influence. Much more influential in making object-oriented program- ming popular was Smalltalk -8 0 , released in 1 980 as the result of research done ... currently most popular programming languages, Java and C++, are object-oriented [ 186 , 184 ]. The most popular “language-independent” design aids, the Unified Modeling Language (UM...

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... X2]#B#(X1|X2|B)| Copyright c  200 1-3 by P. Van Roy and S. Haridi. All rights reserved. 674 Relational Programming tive proof of this [194, 188 ]. The successful series of conferences on Practical Applications of Prolog ... some other computation models: • Adding concurrency to the declarative model gives the data-driven and demand-driven concurrent models. These models al...

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