package async

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Monadic concurrency library

Install

Dune Dependency

github.com Readme Changelog MIT License Edit opam file Versions (6)

Authors

J

Jane Street Group, LLC

Maintainers

J

Jane Street developers

Sources

async-v0.14.0.tar.gz

sha256=74f2b7b01ce3b92289cc7a68cd3ae53885c763cedd320d27949d585e5c13dc64

md5=9f80cfb72e3defcc9fca50f67e23e93c

doc/async.lock_file_async/Lock_file_async/index.html

Module `Lock_file_async`

Lock_file_async is a wrapper that provides Async equivalents for Lock_file_blocking.

val create : 
  ?message:string ->
  ?close_on_exec:bool ->
  ?unlink_on_exit:bool ->
  string ->
  bool Async.Deferred.t

create ?message path tries to create a file at path containing the text message, pid if none provided. It returns true on success, false on failure. Note: there is no way to release the lock or the fd created inside! It will only be released when the process dies.

val create_exn : 
  ?message:string ->
  ?close_on_exec:bool ->
  ?unlink_on_exit:bool ->
  string ->
  unit Async.Deferred.t

create_exn ?message path is like create except that it throws an exception on failure instead of returning a boolean value.

val waiting_create : 
  ?abort:unit Async.Deferred.t ->
  ?message:string ->
  ?close_on_exec:bool ->
  ?unlink_on_exit:bool ->
  string ->
  unit Async.Deferred.t

waiting_create path repeatedly tries to lock path, becoming determined when path is locked or raising when abort becomes determined. Similar to Lock_file_blocking.create.

val is_locked : string -> bool Async.Deferred.t

is_locked path returns true when the file at path exists and is locked, false otherwise.

module Nfs : sig ... end

Nfs has analogs of functions in Lock_file_blocking.Nfs; see there for documentation. In addition to adding Deferred's, blocking_create was renamed waiting_create to avoid the impression that it blocks Async.

module Flock : sig ... end

module Symlink : sig ... end