Copenhagen Programming Language Seminar
Read-copy-update (in short, RCU) is a variant of reader/writer lock
that allows a very efficient implementation of readers. In RCU, readers
are allowed to access a shared
data structure even when a writer is modifying the data structure.
Furthermore, readers do not invoke any synchronization primitives,
incurring almost zero synchronization overhead. Because of this benefit,
RCU has gained popularity among Linux kernel developers.
For instance, it is used in the System V IPC implementation,
the lock-free IPv4 route cache and the lock-free lookup of directory
entries in the dcache subsystem.
Scientific host:Lars Birkedal Administrative host:
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