package containers

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A modular, clean and powerful extension of the OCaml standard library

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dune-project
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github.com Readme Changelog Edit opam file Versions (23)

Authors

  1. S
    Simon Cruanes

Maintainers

  1. S
    simon.cruanes.2007@m4x.org

Sources

v2.8.tar.gz
md5=03b80e963186e91ddac62ef645bf7fb2
sha512=c8f434808be540c16926bf03d89f394d33fc2d092f963a7b6d412481229e0a96290f1ad7c7d522415115d35426b7aa0b3fda4b991ddc321dad279d402c9a0c0b

doc/containers.thread/CCLock/index.html

Module CCLockSource

Utils around Mutex

A value wrapped into a Mutex, for more safety.

  • since 0.8
Sourcetype 'a t

A value surrounded with a lock

Sourceval create : 'a -> 'a t

Create a new protected value.

Sourceval with_lock : 'a t -> ('a -> 'b) -> 'b

with_lock l f runs f x where x is the value protected with the lock l, in a critical section. If f x fails, with_lock l f fails too but the lock is released.

Sourceval try_with_lock : 'a t -> ('a -> 'b) -> 'b option

try_with_lock l f runs f x in a critical section if l is not locked. x is the value protected by the lock l. If f x fails, try_with_lock l f fails too but the lock is released.

  • since 0.22
Sourcemodule LockRef : sig ... end

Type allowing to manipulate the lock as a reference.

Sourceval with_lock_as_ref : 'a t -> f:('a LockRef.t -> 'b) -> 'b

with_lock_as_ref l f calls f with a reference-like object that allows to manipulate the value of l safely. The object passed to f must not escape the function call.

  • since 0.13
Sourceval update : 'a t -> ('a -> 'a) -> unit

update l f replaces the content x of l with f x, atomically.

Sourceval update_map : 'a t -> ('a -> 'a * 'b) -> 'b

update_map l f computes x', y = f (get l), then puts x' in l and returns y.

  • since 0.16
Sourceval mutex : _ t -> Mutex.t

Underlying mutex.

Sourceval get : 'a t -> 'a

Atomically get the value in the lock. The value that is returned isn't protected!

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

Atomically set the value.

  • since 0.13
Sourceval incr : int t -> unit

Atomically increment the value.

  • since 0.13
Sourceval decr : int t -> unit

Atomically decrement the value.

  • since 0.13
Sourceval incr_then_get : int t -> int

incr_then_get x increments x, and returns its new value.

  • since 0.16
Sourceval get_then_incr : int t -> int

get_then_incr x increments x, and returns its previous value.

  • since 0.16
Sourceval decr_then_get : int t -> int

decr_then_get x decrements x, and returns its new value.

  • since 0.16
Sourceval get_then_decr : int t -> int

get_then_decr x decrements x, and returns its previous value.

  • since 0.16
Sourceval get_then_set : bool t -> bool

get_then_set b sets b to true, and returns the old value.

  • since 0.16
Sourceval get_then_clear : bool t -> bool

get_then_clear b sets b to false, and returns the old value.

  • since 0.16