PPT-Hazard Pointers: Safe Memory Reclamation of Lock-Free Objec

Author : liane-varnes | Published Date : 2016-06-19

Maged M Michael The Problem Lockfree algorithms assume that threads can operate on any object at any time Freeing memory could break this assumption How can we free

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Hazard Pointers: Safe Memory Reclamation of Lock-Free Objec: Transcript

Maged M Michael The Problem Lockfree algorithms assume that threads can operate on any object at any time Freeing memory could break this assumption How can we free memory of deleted nodes in a safe and lockfree manner. Michael Abstract Lockfree objects offer significant performance and reliability advantages over conventional lockbased objects However the lack of an efficient portable lockfree method for the reclamation of the memory occupied by dynamic nodes remo On the Interplay of Hardware Transactional Memory and Lock-free Indexing. Justin . Levandoski. Microsoft Research Redmond. Ryan Stutsman. Microsoft Research Redmond. Darko. . Makreshanski. Department of Computer Science. How Hardware Transactional Memory can Improve . Legacy Data Structures. Maurice Herlihy and Eli Wald. Brown University. Transactional Memory. 2. Concurrent Data Structure = State Machine. 3. atomic. step. CSE 2451. Rong. Shi. Language comparison. C has pointers. Java has references. C++ has pointers . and . references. Pointers. Values of variables are stored in memory, at a particular location. A location is identified and referenced with an address. COP3275 – Programming using c. Diego J. Rivera-Gutierrez. Administrative stuff. Reminder: No class on Friday. . Celebrate the US Independence. Dress in Stripes and stars.... Yell “ ‘. merica. ” at everyone and have fun, but be safe. . Copies from SEE C++ programming course and from . Starting . Out with C++: Early Objects, . 8/E . by Tony . Gaddis, . Judy Walters and Godfrey . Muganda. Simple Pointer Operations. int. main(). {. Allocation. Slides credit: Presentation based on slides by Dave . O’halloran. /CSAPP. Dynamic memory allocation. Where is this important?. Heap. Kernel heap. Physical memory allocator. Problems are similar, but specific sometimes force different solutions. C. ++ . Memory Ordering Issues. Maged Michael. Facebook NY. Dagstuhl. , 21-25 November 2016. Maged . Michael. , Hazard Pointers: Safe Memory Reclamation for Lock-Free . Objects.. . IEEE Transactions on Parallel and Distributed Systems. On the Interplay of Hardware Transactional Memory and Lock-free Indexing. Justin . Levandoski. Microsoft Research Redmond. Ryan Stutsman. Microsoft Research Redmond. Darko. . Makreshanski. Department of Computer Science. Advanced Concepts. 15-213 / 18-213: Introduction to Computer Systems . 19. th. Lecture, . Oct 31. , 2013. Instructors:. . Randy Bryant, Dave . O’Hallaron, . and . Greg . Kesden. Today. Explicit free lists . Pooja. . Aggarwal . (IBM Research, . bangalore. ). Smruti. . R. . Sarangi. . (IIT Delhi). 1. Concurrent Object. Concurrent Object. Threads. Each thread executes a method on the object. method. request. Memory Allocation III CSE 351 Winter 2019 https://xkcd.com/835/ Instructors: Max Willsey Luis Ceze Teaching Assistants: Britt Henderson Lukas Joswiak Josie Lee Wei Lin Daniel Snitkovsky Luis Vega Terminos. . españoles. de . ingeneria. de . computacion. .. Nuestros. . Objetivos. Traer . galletas. . para. los . estudiantes. Enseñar. los . estudiantes. . español. Confundir. los . estudiantes. There has to be a Better Way. Trevor Brown. University of Toronto. Intern, Oracle Labs. Lifecycle of a record. Allocate. Free. Insert. Remove. Reuse. ???. Reclamation with and without locks. Easy with locks: a retired record can be freed if it, and all records pointing to it, are locked.

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