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Source file caches.ml

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module Il = Lang.Il
module VCache = Runtime.Dynamic.Caches.ValueCache
module MCache = Domain.Caches.MixopCache

(* Cache instance *)

type cache = {
  mutable enabled : bool;
  boot_mixop : Il.value MCache.t;
  boot_value : Il.value VCache.t;
  boot_value_pingpong : Il.value VCache.t;
  unboot_mixop : Il.mixop VCache.t;
  unboot_typ : Il.typ VCache.t;
  unboot_value : Il.value VCache.t;
  unboot_value_pingpong : Il.value VCache.t;
}

(* Boot caches *)

let find_boot_mixop_cache : (Il.mixop -> Il.value option) ref =
  ref (fun _ -> None)

let add_boot_mixop_cache : (Il.mixop -> Il.value -> unit) ref =
  ref (fun _ _ -> ())

let find_boot_value_cache : (Il.value -> Il.value option) ref =
  ref (fun _ -> None)

let add_boot_value_cache : (Il.value -> Il.value -> unit) ref =
  ref (fun _ _ -> ())

let find_boot_value_pingpong_cache : (Il.value -> Il.value option) ref =
  ref (fun _ -> None)

let add_boot_value_pingpong_cache : (Il.value -> Il.value -> unit) ref =
  ref (fun _ _ -> ())

(* Unboot caches *)

let find_unboot_mixop_cache : (Il.value -> Il.mixop option) ref =
  ref (fun _ -> None)

let add_unboot_mixop_cache : (Il.value -> Il.mixop -> unit) ref =
  ref (fun _ _ -> ())

let find_unboot_typ_cache : (Il.value -> Il.typ option) ref =
  ref (fun _ -> None)

let add_unboot_typ_cache : (Il.value -> Il.typ -> unit) ref =
  ref (fun _ _ -> ())

let find_unboot_value_cache : (Il.value -> Il.value option) ref =
  ref (fun _ -> None)

let add_unboot_value_cache : (Il.value -> Il.value -> unit) ref =
  ref (fun _ _ -> ())

let find_unboot_value_pingpong_cache : (Il.value -> Il.value option) ref =
  ref (fun _ -> None)

let add_unboot_value_pingpong_cache : (Il.value -> Il.value -> unit) ref =
  ref (fun _ _ -> ())

(* Setter and unsetter *)

let make_cache () : cache =
  {
    enabled = true;
    boot_mixop = MCache.create ~size:4096;
    boot_value = VCache.create ~size:4096;
    boot_value_pingpong = VCache.create ~size:(256 * 1024);
    unboot_mixop = VCache.create ~size:4096;
    unboot_typ = VCache.create ~size:4096;
    unboot_value = VCache.create ~size:4096;
    unboot_value_pingpong = VCache.create ~size:(256 * 1024);
  }

let cache_enable (cache : cache) : unit = cache.enabled <- true

let cache_disable_reset (cache : cache) : unit =
  cache.enabled <- false;
  MCache.empty cache.boot_mixop;
  VCache.empty cache.boot_value;
  VCache.empty cache.boot_value_pingpong;
  VCache.empty cache.unboot_mixop;
  VCache.empty cache.unboot_typ;
  VCache.empty cache.unboot_value;
  VCache.empty cache.unboot_value_pingpong

let cache_clear (cache : cache) : unit =
  MCache.empty cache.boot_mixop;
  VCache.empty cache.boot_value;
  VCache.empty cache.boot_value_pingpong;
  VCache.empty cache.unboot_mixop;
  VCache.empty cache.unboot_typ;
  VCache.empty cache.unboot_value;
  VCache.empty cache.unboot_value_pingpong

(* Stack of caches, where the stack is pushed along calls that climb tower levels,
   and popped along call returns that descend tower levels *)

let stack : cache option list ref = ref []
let curr : cache option ref = ref None

let install_none () : unit =
  (find_boot_mixop_cache := fun _ -> None);
  (add_boot_mixop_cache := fun _ _ -> ());
  (find_boot_value_cache := fun _ -> None);
  (add_boot_value_cache := fun _ _ -> ());
  (find_boot_value_pingpong_cache := fun _ -> None);
  (add_boot_value_pingpong_cache := fun _ _ -> ());
  (find_unboot_mixop_cache := fun _ -> None);
  (add_unboot_mixop_cache := fun _ _ -> ());
  (find_unboot_typ_cache := fun _ -> None);
  (add_unboot_typ_cache := fun _ _ -> ());
  (find_unboot_value_cache := fun _ -> None);
  (add_unboot_value_cache := fun _ _ -> ());
  (find_unboot_value_pingpong_cache := fun _ -> None);
  add_unboot_value_pingpong_cache := fun _ _ -> ()

let install_some (cache : cache) : unit =
  (find_boot_mixop_cache := fun mixop -> MCache.find cache.boot_mixop mixop);
  (add_boot_mixop_cache :=
     fun mixop value -> MCache.add cache.boot_mixop mixop value);
  (find_boot_value_cache := fun value -> VCache.find cache.boot_value value);
  (add_boot_value_cache :=
     fun value result -> VCache.add cache.boot_value value result);
  (find_boot_value_pingpong_cache :=
     fun value -> VCache.find cache.boot_value_pingpong value);
  (add_boot_value_pingpong_cache :=
     fun value result -> VCache.add cache.boot_value_pingpong value result);
  (find_unboot_mixop_cache :=
     fun value_mixop -> VCache.find cache.unboot_mixop value_mixop);
  (add_unboot_mixop_cache :=
     fun value_mixop mixop -> VCache.add cache.unboot_mixop value_mixop mixop);
  (find_unboot_typ_cache :=
     fun value_typ -> VCache.find cache.unboot_typ value_typ);
  (add_unboot_typ_cache :=
     fun value_typ typ -> VCache.add cache.unboot_typ value_typ typ);
  (find_unboot_value_cache :=
     fun value_value -> VCache.find cache.unboot_value value_value);
  (add_unboot_value_cache :=
     fun value_value value -> VCache.add cache.unboot_value value_value value);
  (find_unboot_value_pingpong_cache :=
     fun value_value -> VCache.find cache.unboot_value_pingpong value_value);
  add_unboot_value_pingpong_cache :=
    fun value_value value ->
      VCache.add cache.unboot_value_pingpong value_value value

let install (cache_opt : cache option) : unit =
  match cache_opt with
  | None -> install_none ()
  | Some cache -> install_some cache

let push_cache (cache : cache) : unit =
  stack := !curr :: !stack;
  let next = if cache.enabled then Some cache else None in
  curr := next;
  install next

let pop_cache () : unit =
  let prev =
    match !stack with
    | [] -> None
    | prev :: rest ->
        stack := rest;
        prev
  in
  curr := prev;
  install prev