Declare: fix Future management

2 files changed, 5 insertions, 0 deletions

diff --git a/lib/future.ml b/lib/future.ml
index 690255edd..77386a1a9 100644
--- a/lib/future.ml
+++ b/lib/future.ml
@@ -90,6 +90,8 @@ let uuid kx = let id, _, _ = get kx in id
 let from_val ?(fix_exn=id) v = create fix_exn (Val (v, None))
 let from_here ?(fix_exn=id) v = create fix_exn (Val (v, Some (!freeze ())))
 
+let fix_exn_of ck = let _, fix_exn, _ = get ck in fix_exn
+
 let default_force () = raise NotReady
 let assignement ck = fun v ->
   let _, fix_exn, c = get ck in
diff --git a/lib/future.mli b/lib/future.mli
index 09d18ff26..b4eced06a 100644
--- a/lib/future.mli
+++ b/lib/future.mli
@@ -84,6 +84,9 @@ val from_val : ?fix_exn:fix_exn -> 'a -> 'a computation
    the value is not just the 'a but also the global system state *)
 val from_here : ?fix_exn:fix_exn -> 'a -> 'a computation
 
+(* To get the fix_exn of a computation *)
+val fix_exn_of : 'a computation -> fix_exn
+
 (* Run remotely, returns the function to assign.  Optionally tekes a function
    that is called when forced.  The default one is to raise NotReady.
    The assignement function does not change the uuid. *)