Async.Lock_file is a wrapper that provides Async equivalents for
Core.Lock_file.
val create : ?message:string ‑> ?close_on_exec:bool ‑> ?unlink_on_exit:bool ‑> string ‑> bool Import.Deferred.tcreate ?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 Import.Deferred.tcreate_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 Import.Deferred.t ‑> ?message:string ‑> ?close_on_exec:bool ‑> ?unlink_on_exit:bool ‑> string ‑> unit Import.Deferred.twaiting_create path repeatedly tries to lock path, becoming determined when path
is locked or raising when abort becomes determined. Similar to
Core.Lock_file.blocking_create.
val is_locked : string ‑> bool Import.Deferred.tis_locked path returns true when the file at path exists and is locked, false
otherwise.
module Nfs : sig ... endNfs has analogs of functions in Core.Lock_file.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.