Mutex

Available since v0.4.0

Lock Concurrent Operations

local mutex = require "mutex"

mutex()

The mutex package provides a single function, mutex(), that will create a new mutex-based lock. The returned function can be called with a function argument to synchronize concurrent operations on a shared resource.

local mutex = require "mutex"
local lock = mutex()

local res = lock(function()
  -- Critical section
  -- This code will be concurrency-safe
  return do_thing_with_resource() -- Result will be returned to the outer scope `res`
end)

NOTE: Beware of recursive locking (calling lock() again inside the lock's critical section). The code will deadlock.