SBCL Fibers: Lightweight Cooperative Threads

A draft design document describing lightweight userland cooperative threads for SBCL.

March 1, 2026 · Anthony Green

Bending the CLOS MOP for Java-Style Single Dispatch

How I customized the CLOS Meta-Object Protocol in OpenLDK to replace PCL’s multi-dispatch machinery with a fast hash-table cache, taking Clojure bootstrap from 2h45m to 2 minutes 40 seconds.

February 22, 2026 · Anthony Green