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 Async_kernel.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 Async_kernel.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 Async_kernel.Deferred.t ->
?message:string ->
?close_on_exec:bool ->
?unlink_on_exit:bool ->
string ->
unit Async_kernel.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 Async_kernel.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.