Ocsigen

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Module Lwt_mutex


module Lwt_mutex: sig .. end
locked mutex returns whether mutex is currently locked
type t 
val create : unit -> t
val lock : t -> unit Lwt.t
val unlock : t -> unit
val is_locked : t -> bool
locked mutex returns whether mutex is currently locked
val is_empty : t -> bool
is_empty mutex returns true if they are no thread waiting on the mutex, and false otherwise
val with_lock : t -> (unit -> 'a Lwt.t) -> 'a Lwt.t
with_lock lock f is used to lock a mutex within a block scope. The function f () is called with the mutex locked, and its result is returned from the call to . If an exception is raised from f, the mutex is also unlocked before the scope of is exited.