Are there any guarantees for atomicity in threaded OCaml code? Or must I always
use a mutex? For example:

module StringMap = Map.Make (String)

let mapref = ref StringMap.empty

thread 1:

    mapref := StringMap.add key value !mapref

thread 2 through thread N:

    let value = StringMap.find key !mapref

Assume only thread 1 can update the reference. Is this code safe?



		
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