Use Procnames as schedule units in the RestartScheduler

Summary:
The restart scheduler will now have two phases:
  1. Analyze all the procs obtained from the sources.
  2. Run the FileScheduler on the sources.
The second step aims to analyze only the File level analyzers
requirements.

Reviewed By: ngorogiannis

Differential Revision: D19430244

fbshipit-source-id: b4f9ee69b

infer/src/backend/RestartScheduler.ml

@@ -18,15 +18,21 @@ let of_list (lst : 'a list) : 'a ProcessPool.TaskGenerator.t =
 
 (** This behaves exactly the same as the FileScheduler so far. The goal is that it will use a work
     queue and proc locking to avoid repeating work and hopefully get some in process cache hits. *)
-let make sources =
+let make_with_procs_from sources =
   let gen =
-    List.rev_map sources ~f:(fun sf -> SchedulerTypes.File sf)
+    List.map sources ~f:SourceFiles.proc_names_of_source
+    |> List.concat
+    |> List.rev_map ~f:(fun procname -> SchedulerTypes.Procname procname)
     |> List.permute ~random_state:(Random.State.make (Array.create ~len:1 0))
     |> of_list
   in
   let next x =
     let res = gen.next x in
-    (* see defn of gen above to see why res should never match Some (Procname _) *)
+    (* see defn of gen above to see why res should never match Some (File _) *)
-    match res with None -> None | Some (Procname _) -> assert false | Some (File _) as v -> v
+    match res with None -> None | Some (File _) -> assert false | Some (Procname _) as v -> v
   in
   {gen with next}
+
+
+let make sources =
+  ProcessPool.TaskGenerator.chain (make_with_procs_from sources) (FileScheduler.make sources)