Rewrite of the GHC Garbage Collector

[azhenley]

https://gitlab.haskell.org/ghc/ghc/commit/7f72b540288bbdb32a6750dd64b9d366501ed10c

[campfireveteran]

Even though it uses an unique memory model, I'm surprised ORCA hasn't been extracted from Pony because it supposedly beats C4 and Erlang's.

[rurban → campfireveteran]

Completely unrelated. ORCA is an actor protocol, Pony uses rust-like compile-time ensured ownership attributes and extends that to refs and copies as method arguments.

GHC uses a slow and traditional non-moving mark & sweep collector, and extended that to be fully concurrent. That's still a long way to a good compacting collector.

[ggm]

Stop-the-world costs: Love to see some discussion of consequences stemming from this.