refactor: rename little blocking queue

src/bb_queue.mli

@@ -1,4 +1,4 @@
-(** Simple blocking queue *)
+(** Basic Blocking Queue *)
 
 type 'a t
 

src/d_pool_.ml

@@ -2,19 +2,19 @@ type domain = Domain_.t
 
 let work_ _i q : unit =
   while true do
-    let f = S_queue.pop q in
+    let f = Bb_queue.pop q in
     try f () with _ -> ()
   done
 
 (* A domain level worker. It should not do too much except for starting
     new threads for pools. *)
-type worker = { q: (unit -> unit) S_queue.t } [@@unboxed]
+type worker = { q: (unit -> unit) Bb_queue.t } [@@unboxed]
 
 let domains_ : worker array lazy_t =
   lazy
     (let n = Domain_.recommended_number () in
      Array.init n (fun i ->
-         let q = S_queue.create () in
+         let q = Bb_queue.create () in
          let _domain : domain = Domain_.spawn (fun () -> work_ i q) in
          { q }))
 
@@ -23,11 +23,11 @@ let[@inline] n_domains () : int = Array.length (Lazy.force domains_)
 let run_on (i : int) (f : unit -> unit) : unit =
   let (lazy arr) = domains_ in
   assert (i < Array.length arr);
-  S_queue.push arr.(i).q f
+  Bb_queue.push arr.(i).q f
 
 let run_on_and_wait (i : int) (f : unit -> 'a) : 'a =
-  let q = S_queue.create () in
+  let q = Bb_queue.create () in
   run_on i (fun () ->
       let x = f () in
-      S_queue.push q x);
-  S_queue.pop q
+      Bb_queue.push q x);
+  Bb_queue.pop q

src/fut.ml

@@ -290,9 +290,9 @@ let wait_block (self : 'a t) : 'a or_error =
   | Waiting _ ->
     let real_block () =
       (* use queue only once *)
-      let q = S_queue.create () in
-      on_result self (fun r -> S_queue.push q r);
-      S_queue.pop q
+      let q = Bb_queue.create () in
+      on_result self (fun r -> Bb_queue.push q r);
+      Bb_queue.pop q
     in
 
     (* a bit of spinlock *)

src/pool.ml

@@ -5,7 +5,7 @@ module A = Atomic_
 type t = {
   active: bool A.t;
   threads: Thread.t array;
-  q: (unit -> unit) S_queue.t;
+  q: (unit -> unit) Bb_queue.t;
 }
 
 type thread_loop_wrapper =
@@ -24,14 +24,14 @@ let add_global_thread_loop_wrapper f : unit =
 exception Shutdown
 
 let[@inline] run self f : unit =
-  try S_queue.push self.q f with S_queue.Closed -> raise Shutdown
+  try Bb_queue.push self.q f with Bb_queue.Closed -> raise Shutdown
 
 let size self = Array.length self.threads
 
-let worker_thread_ ~on_exn (active : bool A.t) (q : _ S_queue.t) : unit =
+let worker_thread_ ~on_exn (active : bool A.t) (q : _ Bb_queue.t) : unit =
   while A.get active do
-    match S_queue.pop q with
-    | exception S_queue.Closed -> ()
+    match Bb_queue.pop q with
+    | exception Bb_queue.Closed -> ()
     | task ->
       (try task ()
        with e ->
@@ -54,7 +54,7 @@ let create ?(on_init_thread = default_thread_init_exit_)
   let offset = Random.int n_domains in
 
   let active = A.make true in
-  let q = S_queue.create () in
+  let q = Bb_queue.create () in
 
   let pool =
     let dummy = Thread.self () in
@@ -63,7 +63,7 @@ let create ?(on_init_thread = default_thread_init_exit_)
 
   (* temporary queue used to obtain thread handles from domains
      on which the thread are started. *)
-  let receive_threads = S_queue.create () in
+  let receive_threads = Bb_queue.create () in
 
   (* start the thread with index [i] *)
   let start_thread_with_idx i =
@@ -96,7 +96,7 @@ let create ?(on_init_thread = default_thread_init_exit_)
     let create_thread_in_domain () =
       let thread = Thread.create main_thread_fun () in
       (* send the thread from the domain back to us *)
-      S_queue.push receive_threads (i, thread)
+      Bb_queue.push receive_threads (i, thread)
     in
 
     D_pool_.run_on dom_idx create_thread_in_domain
@@ -110,7 +110,7 @@ let create ?(on_init_thread = default_thread_init_exit_)
 
   (* receive the newly created threads back from domains *)
   for _j = 1 to n do
-    let i, th = S_queue.pop receive_threads in
+    let i, th = Bb_queue.pop receive_threads in
     pool.threads.(i) <- th
   done;
   pool
@@ -119,5 +119,5 @@ let shutdown (self : t) : unit =
   let was_active = A.exchange self.active false in
   (* close the job queue, which will fail future calls to [run],
      and wake up the subset of [self.threads] that are waiting on it. *)
-  if was_active then S_queue.close self.q;
+  if was_active then Bb_queue.close self.q;
   Array.iter Thread.join self.threads