PPT-CS 140 Lecture Notes: Concurrency
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Slide 1 Too Much Milk Roomate A 300 Arrive home no milk 305 Leave for store 310 Arrive at store 315 Leave store 320 Arrive home put milk away CS 140 Lecture Notes
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CS 140 Lecture Notes: Concurrency: Transcript
Slide 1 Too Much Milk Roomate A 300 Arrive home no milk 305 Leave for store 310 Arrive at store 315 Leave store 320 Arrive home put milk away CS 140 Lecture Notes Concurrency. Slide . 1. Too Much Milk. . Roommate . A. 3:00. Arrive home: no milk. 3:05. Leave for store. 3:10. Arrive at store. 3:15. Leave store. 3:20. Arrive home, put milk away. CS 140 Lecture Notes: Concurrency. Slide . 1. Too Much Milk With Locks. Both threads:. struct. lock l;. .... l. ock_acquire. (&l);. if (milk == 0) . {. . . buy_milk. ();. }. lock_release. (&. l);. CS 140 Lecture Notes: Locks. Seminar: Transaction Processing (Bachelor). SS 2009. Dennis . Stratmann. Outline. Goal and Overview. Examine Three Approaches to CC on RD:. 1. Predicate-Oriented Concurrency Control. 2. Relational Update Transactions. \r \t \t\b\n\n Prof. O. Nierstrasz. Selected material © Magee and Kramer. © Oscar Nierstrasz. 2. Roadmap. Modelling Concurrency. Finite State Processes . Labelled Transition Systems. Java Threads. Thread creation. \n\r\r\b\r\n\b\n\n\b\n\r\n \r Slide . 1. Memory Layout for Process. Code. 0. ∞. Data. Stack. CS 140 Lecture Notes: Linkers. Slide . 2. Creating a Process. Code. 0. ∞. Data. Stack. 101010101010101010101010101010101010101010101010. \f Database Concurrency Control. 1 Purpose of Concurrency Control. To enforce Isolation (through mutual exclusion) among conflicting transactions. . To preserve database consistency through consistency preserving execution of transactions.. Sadhna Kumari. OUTLINE. ACID Properties. 2-Phase Commit Protocol. TPS. Serializability. Concurrency Control Protocols. Current Research. Future. References. ACID PROPERTIES. Atomicity: . A . transaction is . Software & the Concurrency Revolution by Sutter & Larus ACM Queue Magazine, Sept. 2005 For CMPS 5433 - Halverson 1 In a Nutshell “The concurrency revolution is primarily a software revolution Slide . 1. Too Much Milk With Locks. Both threads:. struct. lock l;. .... l. ock_acquire. (&l);. if (milk == 0) . {. . . buyMilk. ();. }. lock_release. (&. l);. CS 140 Lecture Notes: Locks. -. Bhavya. . Kilari. Dr. . Yanqing. Zhang, . CSc. 8320. PREVIEW. P. ART. I. : . I. NTRODUCTION. Transaction Processing System [. R. Chow & T. Johnson, 1997. Slide . 1. free. File Allocation Table. A: 6. B: 1. .... 6. 4. 3. 0. 1. File A:. File B:. Directory (5). 2. end. 2. 3. end. 3. 4. 5. end. 4. 6. 7. free. …. 1. 2. Disk Scheduling. CS 140 Lecture Notes: Disk Scheduling.
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