package async_kernel

  1. Overview
  2. Docs
package async_kernel
Legend:
Library
Module
Module type
Parameter
Class
Class type

A Bvar is a synchronization point that allows one to broadcast a value to clients waiting on the broadcast. With a Bvar, one can efficiently notify multiple clients of edge-triggered conditions, repeating as each edge trigger occurs.

Bvar is like an ivar/deferred, except that it is always "empty" and can be repeatedly "filled" (via broadcast).

Another way to view Bvar is as a restriction of Condition that supports only broadcast, not signaling a single waiter. Dropping signal simplifies the implementation significantly.

The 'permissions parameter is used for read/write permissions. Also see Perms.

type ('a, -'permissions) t
include sig ... end
val sexp_of_t : ('a -> Ppx_sexp_conv_lib.Sexp.t) -> ('permissions -> Ppx_sexp_conv_lib.Sexp.t) -> ('a, 'permissions) t -> Ppx_sexp_conv_lib.Sexp.t
include Core_kernel.Invariant.S2 with type ('a, 'permissions) t := ('a, 'permissions) t
val invariant : 'a Base__.Invariant_intf.inv -> 'b Base__.Invariant_intf.inv -> ('a, 'b) t Base__.Invariant_intf.inv
val create : unit -> ('a, Core_kernel.read_write) t
val wait : ('a, [> Core_kernel.read ]) t -> 'a Async_kernel__.Types.Deferred.t

wait t becomes determined by the next call to broadcast t a.

val broadcast : ('a, [> Core_kernel.write ]) t -> 'a -> unit
val has_any_waiters : ('a, _) t -> bool

has_any_waiters t returns true iff there has been a call to wait t since the most recent call to broadcast t.

OCaml

Innovation. Community. Security.

GitHub Discord Twitter Peertube RSS
About
Changelog Releases Industrial Users Academic Users Why OCaml
Ecosystem
Packages Community Events OCaml Planet Jobs
Resources
Install OCaml Get Started Platform Tools Language Manual Standard Library API Books Exercises Papers OCaml Playground Logo
Policies
Carbon Footprint Governance Privacy Code of Conduct