Stdlib.Mutex(3)

NAME
Stdlib.Mutex - no description

Module
Module Stdlib.Mutex

Documentation

Module Mutex
 : (module Stdlib__Mutex)

type t

The type of mutexes.

val create : unit -> t

Return a new mutex.

val lock : t -> unit

Lock the given mutex. Only one thread can have the mutex locked at any time. A thread that attempts to lock a mutex already locked by another thread will suspend until the other thread unlocks the mutex.

Before4.12 Sys_error was not raised for recursive locking (platform-dependent behaviour)

Raises Sys_error if the mutex is already locked by the thread calling Mutex.lock .

val try_lock : t -> bool

Same as Mutex.lock , but does not suspend the calling thread if the mutex is already locked: just return false immediately in that case. If the mutex is unlocked, lock it and return true .

val unlock : t -> unit

Unlock the given mutex. Other threads suspended trying to lock the mutex will restart. The mutex must have been previously locked by the thread that calls Mutex.unlock .

Before4.12 Sys_error was not raised when unlocking an unlocked mutex or when unlocking a mutex from a different thread.

Raises Sys_error if the mutex is unlocked or was locked by another thread.