Search results
Results from the WOW.Com Content Network
A linked list in an inconsistent state, caused by application of the naive lock-free deletion algorithm. Dotted lines are links that exist in intermediate states; solid lines represent the final state. Deletion of the node holding a has executed simultaneously with insertion of b after a, causing the insertion to be undone.
Skip lists are also used in distributed applications (where the nodes represent physical computers, and pointers represent network connections) and for implementing highly scalable concurrent priority queues with less lock contention, [17] or even without locking, [18] [19] [20] as well as lock-free concurrent dictionaries. [21]
Mike Kleinik, Executive Director of the Chicago Laborers District Council-LMCC and co-chair of the Transportation for Illinois Coalition; Against [1] Organizations.
Any lock-free data structure that uses the compare-and-swap primitive must deal with the ABA problem. For example, in a lock-free stack represented as an intrusively linked list, one thread may be attempting to pop an item from the front of the stack (A → B → C).
The Chicago "L" used skip-stop service, wherein certain trains would stop only at certain designated stations on a route, from 1948 to 1995. It was implemented as a way to speed up travel within a route, and was one of the Chicago Transit Authority's first reforms upon its assumption of the "L" 's operations.
Discover the latest breaking news in the U.S. and around the world — politics, weather, entertainment, lifestyle, finance, sports and much more.
Main page; Contents; Current events; Random article; About Wikipedia; Contact us; Donate
The Chicago "L" (short for "elevated") [4] is the rapid transit system serving the city of Chicago and some of its surrounding suburbs in the U.S. state of Illinois.Operated by the Chicago Transit Authority (CTA), it is the fourth-largest rapid transit system in the United States in terms of total route length, at 102.8 miles (165.4 km) long as of 2014, [1] [note 1] and the third-busiest rapid ...