package eio

  1. Overview
  2. Docs
Effect-based direct-style IO API for OCaml

Install 

dune-project
 Dependency

github.com Edit opam file Versions (20)

Authors

  1. A
    Anil Madhavapeddy
  2. T
    Thomas Leonard

Maintainers

  1. A
    anil@recoil.org

Sources

eio-1.4.tbz
sha256=ba11ad486f492130dbb486f2b3bdc4905643f10016806ddf86e9a34e4346aaa5
sha512=57ef2c137ccdc26d8029e636b6a4ee92da7c6b2f35954946bd56ca595d6947a8ec42f6f83f8552f73d6719e6ce2314cae2e2fad1686a387522935e6f90e9a8d9

doc/src/eio.utils/dla.ml.html

Source file dla.ml

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
let prepare_for_await () =
  let state = Atomic.make `Init in
  let release () =
    if Atomic.get state != `Released then
      match Atomic.exchange state `Released with
      | `Awaiting enqueue -> enqueue (Ok ())
      | _ -> ()
  and await () =
    if Atomic.get state != `Released then
      Eio.Private.Suspend.enter "domain-local-await" @@ fun ctx enqueue ->
      let awaiting = `Awaiting enqueue in
      if Atomic.compare_and_set state `Init awaiting then (
        Eio.Private.Fiber_context.set_cancel_fn ctx (fun ex ->
            if Atomic.compare_and_set state awaiting `Released then (
              enqueue (Error ex)
            )
          )
      ) else (
        enqueue (Ok ())
      )
  in
  Domain_local_await.{ release; await }