نتایج جستجو برای: lock
تعداد نتایج: 14013 فیلتر نتایج به سال:
We present a new algorithm for concurrent access to array-based priority queue heaps. Deletions proceed top-down as they do in a previous algorithm due to Rao and Kumar 6], but insertions proceed bottom-up, and consecutive insertions use a bit-reversal technique to scatter accesses across the fringe of the tree, to reduce contention. Because insertions do not have to traverse the entire height ...
BACKGROUND The most appropriate lock solution for central venous access devices is still to be defined. GAVeCeLT - the Italian group for venous access devices - has developed a consensus on the evidence-based criteria for the choice and the clinical use of the most appropriate lock solution for central venous catheters (excluding dialysis catheters). METHOD After the constitution of a panel o...
OBJECTIVES The use of an antibiotic lock (AB-lock) for the treatment of catheter-related bloodstream infection (CRBSI) has been suggested, but randomized trials have never been performed. METHODS A randomized, blinded, multicentre trial was set up to compare an AB-lock-containing vancomycin for Gram-positive or ceftazidime for Gram-negative bacteria-with placebo, in addition to parenteral AB ...
Transactional updates to groups of keys are common to a wide class of distributed systems, spanning MapReduce-based workloads, distributed key-value stores and conventional distributed object databases. Such updates are typically implemented using nested transactions/ locks. The cost of such updates is critically dependent on the nesting depth, the contention on any one lock, and the coherence ...
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