Source file module_cache.ml

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open Tezos_scoru_wasm
module Wasmer = Tezos_wasmer
module Lazy_containers = Tezos_lazy_containers

module Kernel_cache = Cache.Make (struct
  module Key = Context_hash

  type value = Wasmer.Module.t

  let delete = Wasmer.Module.delete
end)

let kernel_cache = Kernel_cache.create 2

let load_parse_module store key durable =
  let open Lwt.Syntax in
  let* kernel = Durable.find_value_exn durable key in
  let+ kernel = Lazy_containers.Chunked_byte_vector.to_string kernel in
  Wasmer.Module.(create store Binary kernel)

let load_module store key durable =
  let open Lwt.Syntax in
  let* kernel_hash = Durable.hash_exn ~kind:Value durable key in
  let md = Kernel_cache.find_opt kernel_cache kernel_hash in
  match md with
  | None ->
      let* md = load_parse_module store key durable in
      Kernel_cache.replace kernel_cache kernel_hash md ;
      Lwt.return md
  | Some md -> Lwt.return md

let load_kernel store durable = load_module store Constants.kernel_key durable