package mvar

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Module `Mvar`Source

Sourcetype 'a t

Sourceval create_empty : unit -> 'a t

Create an empty mvar.

Sourceval create : 'a -> 'a t

Create an mvar containing a value.

Sourceval take : 'a t -> 'a

Wait until mvar holds a value, then return it and leave the mvar empty.

Sourceval try_take : 'a t -> 'a option

Non-blocking take - if the mvar holds no value, return None.

Sourceval put : 'a t -> 'a -> unit

Wait until the mvar is empty, then put the supplied value in the mvar.

Sourceval try_put : 'a t -> 'a -> bool

Non-blocking put - if the mvar is empty the put the supplied value in the mvar, otherwise return false.

Sourceval is_empty : 'a t -> bool

Test whether the mvar is empty.

Sourceval swap : 'a t -> 'a -> 'a

Wait until the mvar is populated, then put the supplied value in the mvar and return the previous value.

Sourceval modify : 'a t -> ('a -> 'a) -> unit

Wait until the mvar is populated, then use the supplied function to modify its value.