RCU

What is RCU? Read-Copy-Update(RCU) is way of implementing wait-free synchronization between multiple processes/threads (alternative to lock mechanism). It works well in multiple reader and writer scenarios (especially ready heavy scenario). The key idea in RCU is doing a write/update operation in 2 steps namely ‘removal’ and ‘reclaim’.In step 1 (removal step), we have to remove references to […]