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Concurrency: State Models and Java Programs

Name: Concurrency: State Models and Java Programs
ISBN: 9780470093559

by Jeff Magee, Jeff Kramer

July 2006

Intermediate to advanced

434 pages

9h 24m

English

Wiley

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Copyright
Preface
What Can Readers Expect from this Book?Intended ReadershipAdditional ResourcesSecond Edition
Acknowledgments
1. Introduction
1.1. Concurrent Programs1.2. The Modeling Approach1.3. Practice1.4. Content Overview1.5. Summary1.6. Notes and Further Reading
2. Processes and Threads
2.1. Modeling Processes2.1.1. Action Prefix2.1.2. Choice2.1.2.1. Non-Deterministic Choice2.1.3. Indexed Processes and Actions2.1.4. Process Parameters2.1.5. Guarded Actions2.1.6. Process Alphabets2.2. Implementing Processes2.2.1. Operating System Processes2.2.2. Threads in Java2.2.3. Thread Life Cycle2.2.4. Countdown Timer Example2.3. Summary2.4. Notes and Further Reading2.5. Exercises
3. Concurrent Execution
3.1. Modeling Concurrency3.1.1. Parallel Composition3.1.2. Shared Actions3.1.3. Process Labeling3.1.4. Relabeling3.1.5. Hiding3.1.6. Structure Diagrams3.2. Multi-Threaded Programs3.2.1. ThreadDemo Example – Model3.2.2. ThreadDemo Example – Implementation3.3. Summary3.4. Notes and Further Reading3.5. Exercises
4. Shared Objects and Mutual Exclusion
4.1. Interference4.1.1. Ornamental Garden Problem4.1.2. Ornamental Garden Model4.2. Mutual Exclusion in Java4.3. Modeling Mutual Exclusion4.4. Summary4.5. Notes and Further Reading4.6. Exercises
5. Monitors and Condition Synchronization
5.1. Condition Synchronization5.1.1. Car Park Model5.1.2. Car Park Program5.1.3. Condition Synchronization in Java5.2. Semaphores5.2.1. Modeling Semaphores5.2.2. Semaphores in Java5.3. Bounded Buffers5.3.1. Bounded Buffer Model5.3.2. Bounded Buffer Program5.4. Nested Monitors5.5. Monitor Invariants5.6. Summary5.7. Notes and Further Reading5.8. Exercises
6. Deadlock
6.1. Deadlock Analysis6.2. Dining Philosophers Problem6.2.1. Dining Philosophers Implementation6.2.2. Deadlock-Free Philosophers6.3. Summary6.4. Notes and Further Reading6.5. Exercises
7. Safety and Liveness Properties
7.1. Safety7.1.1. Safety Properties7.1.2. Safety Property for Mutual Exclusion7.2. Single-Lane Bridge Problem7.2.1. Single-Lane Bridge Model7.2.2. Single-Lane Bridge Implementation7.3. Liveness7.3.1. Progress Properties7.3.2. Progress Analysis7.3.3. Action Priority7.3.3.1. High Priority Operator ("≪")7.3.3.2. Low Priority Operator ("≫")7.4. Liveness of the Single-Lane Bridge7.4.1. Revised Single-Lane Bridge Model7.4.2. Revised Single-Lane Bridge Implementation7.5. Readers–Writers Problem7.5.1. Readers–Writers Model7.5.1.1. Safety Property7.5.1.2. Progress Property7.5.2. Readers–Writers Implementation7.5.3. Revised Readers–Writers Model and Implementation7.6. Summary7.7. Notes and Further Reading7.8. Exercises

8. Model-Based Design
8.1. From Requirements to Models8.1.1. A Cruise Control System8.1.2. Structure of the Model8.1.3. Model Elaboration8.1.4. Safety Properties8.1.5. Revising the Model8.1.6. Progress Properties8.2. From Models to Implementations8.3. Summary8.4. Notes and Further Reading8.5. Exercises
9. Dynamic Systems
9.1. Golf Club Program9.2. Golf Club Model9.3. Fair Allocation9.4. Revised Golf Ball Allocator9.5. Bounded Overtaking9.6. Bounded Overtaking Golf Ball Allocator9.7. Master–Slave Program9.8. Master–Slave Model9.9. Summary9.10. Notes and Further Reading9.11. Exercises
10. Message Passing
10.1. Synchronous Message Passing10.1.1. Selective Receive10.1.2. Synchronous Message Passing in Java10.1.3. Modeling Synchronous Message Passing10.1.4. Modeling and Implementing Selective Receive10.2. Asynchronous Message Passing10.2.1. Asynchronous Message Passing in Java10.2.2. Modeling Asynchronous Message Passing10.3. Rendezvous10.3.1. Rendezvous in Java10.3.2. Modeling Rendezvous10.3.3. Rendezvous and Monitor Method Invocation10.4. Summary10.5. Notes and Further Reading10.6. Exercises
11. Concurrent Architectures
11.1. Filter Pipeline11.1.1. Primes Sieve Model11.1.1.1. Unbuffered Pipes11.1.1.2. Abstracting from Application Detail11.1.1.3. Architectural Property Analysis11.1.2. Primes Sieve Implementation11.1.2.1. Why Use Buffering?11.2. Supervisor–Worker11.2.1. Linda Tuple Space11.2.1.1. Tuple Space Model11.2.1.2. Tuple Space Implementation11.2.2. Supervisor–Worker Model11.2.2.1. Analysis11.2.3. Supervisor–Worker Implementation11.2.3.1. Speedup and Efficiency11.3. Announcer–Listener11.3.1. Announcer–Listener Model11.3.1.1. Analysis11.3.2. Announcer – Listener Implementation11.4. Summary11.5. Notes and Further Reading11.6. Exercises
12. Timed Systems
12.1. Modeling Timed Systems12.1.1. Timing Consistency12.1.2. Maximal Progress12.1.3. Modeling Techniques12.1.3.1. Output in an Interval12.1.3.2. Jitter12.1.3.3. Timeout12.2. Implementing Timed Systems12.2.1. Timed Objects12.2.1.1. CountDown Timer12.2.1.2. Timed Producer–Consumer12.2.1.3. The Two-Phase Clock12.2.2. Time Manager12.3. Parcel Router Problem12.3.1. Parcel Router Model12.3.1.1. GEN12.3.1.2. BIN12.3.1.3. STAGE12.3.1.4. CHUTE12.3.1.5. SENSORCONTROLLER12.3.1.6. SWITCH12.3.1.7. Analysis12.3.2. Parcel Router Implementation12.4. Space Invaders12.4.1. Space Invaders Model12.4.1.1. Sprite12.4.1.2. Alien12.4.1.3. Missile12.4.1.4. Spaceship12.4.1.5. Collision Detection12.4.1.6. Space Invaders12.4.1.7. Analysis12.4.2. Space Invaders Implementation12.4.2.1. Sprite and SpriteCanvas12.4.2.2. CollisionDetector12.4.2.3. SpaceInvaders12.5. Summary12.6. Notes and Further Reading12.7. Exercises
13. Program Verification
13.1. Sequential Processes13.1.1. Local Process END13.1.2. Sequential Composition;13.1.3. Parallel Composition and Sequential Processes13.1.4. Sequential Processes and Analysis13.2. Modeling Condition Synchronization13.2.1. Wait, Notify and NotifyAll13.3. Modeling Variables and Synchronized Methods13.3.1. Variables13.3.2. Monitor Exit and Entry13.3.3. Synchronized Methods13.4. Bounded Buffer Example13.4.1. put() and get() Methods13.4.2. Producer and Consumer Threads13.4.3. Analysis13.5. Readers–Writers Example13.5.1. ReadWritePriority Methods13.5.1.1. READER and WRITER Processes13.5.2. Analysis13.5.2.1. Progress Analysis13.6. Summary13.7. Notes and Further Reading13.8. Exercises
14. Logical Properties
14.1. Fluent Propositions14.1.1. Fluents14.1.1.1. Action Fluents14.1.2. Fluent Expressions14.2. Temporal Propositions14.2.1. Safety Properties14.2.1.1. Single-Lane Bridge Safety Property14.2.2. Liveness Properties14.2.2.1. Response Properties14.3. Fluent Linear Temporal Logic (FLTL)14.3.1. Until14.3.2. Weak Until14.3.2.1. Definitions14.3.3. Next Time14.4. Database Ring Problem14.4.1. Database Ring Model14.4.2. Database Ring Properties14.4.2.1. Witness Executions14.4.2.2. Finite Executions14.5. Summary14.6. Notes and Further Reading14.7. Exercises
A. FSP Quick Reference
A.1. ProcessesA.1.1. ExampleA.2. Composite ProcessesA.2.1. ExampleA.3. Common OperatorsA.4. PropertiesA.5. Fluent Linear Temporal Logic (FLTL)
B. FSP Language Specification
B.1. FSP DescriptionB.2. IdentifiersB.3. Action LabelsB.3.1. ExamplesB.3.2. ExamplesB.3.3. ExamplesB.4. const, range, setB.4.1. ExamplesB.5. Process DefinitionB.5.1. ExamplesB.5.2. ExampleB.5.3. ExamplesB.6. Composite ProcessB.6.1. ExamplesB.6.2. ExampleB.7. ParametersB.7.1. ExampleB.8. Re-Labeling and HidingB.8.1. ExamplesB.8.2. Prefix MatchingB.9. property, progress and menuB.9.1. ExampleB.10. ExpressionB.11. Basic FSPB.12. fluent and assertB.12.1. Example
C. FSP Semantics
C.1. Labeled Transition System (LTS)C.2. ProcessesC.3. Composite ProcessesC.3.1. LTS CompositionC.3.2. LTS PriorityC.3.3. FSP Composition and PriorityC.4. Common OperatorsC.4.1. Re-LabelingC.4.2. HidingC.4.3. FSP Re-Labeling, Hiding and InterfaceC.5. Safety PropertiesC.6. Semantic EquivalencesC.6.1. Strong EquivalenceC.6.2. Weak EquivalenceC.7. Fluent Linear Temporal Logic (FLTL)C.7.1. Linear Temporal LogicC.7.2. Fluents
D. UML Class Diagrams
Bibliography

Content preview from Concurrency: State Models and Java Programs

Chapter 4. Shared Objects and Mutual Exclusion

In the last chapter, we discussed the execution of multiple processes on one or more processors, modeling concurrent execution by interleaving and executing multiple concurrent threads in a Java program. We explained how process interaction is modeled using shared atomic actions, but not how real processes or threads interact. In this chapter, we turn to the issues involved in constructing concurrent programs in which threads interact to communicate and cooperate.

The simplest way for two or more threads in a Java program to interact is via an object whose methods can be invoked by the set of threads. This shared object's state can of course be observed and modified by its methods. Consequently, two threads can communicate by one thread writing the state of the shared object and the other thread reading that state. Similarly, a set of threads may cooperate to update some information encapsulated in a shared object. Unfortunately, as we will explain, this simple scheme of interaction does not work.

Interference

We have seen that the execution of the instructions from a set of threads can be interleaved in an arbitrary fashion. This interleaving can result in incorrect updates to the state of a shared object. The phenomenon is known as interference. The problem of interference, and how to deal with it, is the main topic of this chapter.

Ornamental Garden Problem

To focus on the issues of thread interaction, we use an example known as the problem ...

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