package ocaml-base-compiler

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Official release 4.14.2

Install

Dune Dependency

ocaml.org Edit opam file Versions (99)

Authors

Xavier Leroy

Maintainers

Sources

4.14.2.tar.gz

sha256=c2d706432f93ba85bd3383fa451d74543c32a4e84a1afaf3e8ace18f7f097b43

doc/stdlib/Stdlib/Atomic/index.html

Module `Stdlib.Atomic`Source

This module provides a purely sequential implementation of the concurrent atomic references provided by the Multicore OCaml standard library:

https://github.com/ocaml-multicore/ocaml-multicore/blob/parallel_minor_gc/stdlib/atomic.mli

This sequential implementation is provided in the interest of compatibility: when people will start writing code to run on Multicore, it would be nice if their use of Atomic was backward-compatible with older versions of OCaml without having to import additional compatibility layers.

since 4.12

Sourcetype !'a t

An atomic (mutable) reference to a value of type 'a.

Sourceval make : 'a -> 'a t

Create an atomic reference.

Sourceval get : 'a t -> 'a

Get the current value of the atomic reference.

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

Set a new value for the atomic reference.

Sourceval exchange : 'a t -> 'a -> 'a

Set a new value for the atomic reference, and return the current value.

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

compare_and_set r seen v sets the new value of r to v only if its current value is physically equal to seen -- the comparison and the set occur atomically. Returns true if the comparison succeeded (so the set happened) and false otherwise.

Sourceval fetch_and_add : int t -> int -> int

fetch_and_add r n atomically increments the value of r by n, and returns the current value (before the increment).

Sourceval incr : int t -> unit

incr r atomically increments the value of r by 1.

Sourceval decr : int t -> unit

decr r atomically decrements the value of r by 1.