Internal to Async -- see Ivar for the public API.
include sig ... endval sexp_of_t : ('a ‑> Base.Sexp.t) ‑> 'a t ‑> Base.Sexp.tinclude Core_kernel.Invariant.S1 with type a t := a tval invariant : 'a Base__.Invariant_intf.inv ‑> 'a t Base__.Invariant_intf.invval create : unit ‑> _ tval create_full : 'a ‑> 'a tval peek : 'a t ‑> 'a optionval value_exn : 'a t ‑> 'aval value : 'a t ‑> if_empty_then_failwith:string ‑> 'aval is_empty : _ t ‑> boolval is_full : _ t ‑> boolval fill : 'a t ‑> 'a ‑> unitmodule Handler : sig ... endval add_handler : 'a t ‑> ('a ‑> unit) ‑> Async_kernel.Execution_context.t ‑> 'a Handler.tval has_handlers : _ t ‑> boolval upon : 'a t ‑> ('a ‑> unit) ‑> unit