Martin Thompson
Lock-free algorithms Jump to navigationJump to search Herlihy, Luchangco and Moir's 2003 paper, "Obstruction-Free Synchronization: Double-Ended Queues as an Example" pretty much revolutionized the field and is mandatory reading. Techniques likespeculative lock elision(SLE) can abrogate much of the ...
There are two types ofnon-blocking thread synchronizationalgorithms - lock-free, and wait-free. Their meaning is often confused. In lock-free systems, while any particular computation may be blocked for some period of time, all CPUs are able to continue performing other computations. To put it...
all the lock-free algorithms which I have encountered require the use of special atomic processor instructions such as CAS (compare and swap) or LL/SC (load linked/store conditional). Furthermore, the correct implementation of these algorithms also requires an understanding of the ...
Lock-free algorithms are carefully designed data-structures and functions to allow for multiple threads to attempt to make progress independently of one-another. This means that you do not try to acquire a lock before performing your critical region. Instead, you independently update a local copy ...
** Algorithms" ** ** Author: Jingcheng Li <jcli.china@gmail.com> ** **/#define__GNU_SOURCE#include<stdlib.h>#include<stdint.h>#defineCAS __sync_bool_compare_and_swaptypedefintdata_type; typedefstructqueue_t queue_t; typedefstructpointer_t pointer_t; ...
allows individual threads to starve but guarantees system-wide throughput. An algorithm is lock-free if, when the program threads are run for a sufficiently long time, at least one of the threads makes progress (for some sensible definition of progress). All wait-free algorithms are lock-free...
ofLock-FreeAlgorithms (InvitedPaper) GerhardSchellhorn,SimonB¨aumler InstituteforSoftwareandSystemsEngineering UniversityofAugsburg Germany {schellhorn,baeumler}@informatik.uni-augsburg.de Abstract Thecurrenttrendtowardsmulti-coreprocessorshasre- newedtheinterestinthedevelopmentandcorrectnessof concurrentalgorithms....
Maged M. Michaelat TJ Watson (also at URCS)andMichael L. Scotthave developed a number of lock-free algorithms including one of the most well known lock-free queue algorithms. Maged Michael also wroteSafe Memory Reclamation for Dynamic Lock-Free Objects Using Atomic Reads and Writes ...
While attending the session a couple of things occurred to me. Firstly, I thought it was about time I reviewed the current status of Java lock implementations. Secondly, that although StampedLock looks like a good addition to the JDK, it seems to miss the fact that lock-free algorithms are...