Here's a simple lock mechanism, implemented via closure
const createLock = () => {
let lockStatus = false
const release = () => {
lockStatus = false
}
const acuire = () => {
if (lockStatus == true)
return false
lockStatus = true
return true
}
return {
lockStatus: lockStatus,
acuire: acuire,
release: release,
}
}
lock = createLock() // create a lock
lock.acuire() // acuired a lock
if (lock.acuire()){
console.log("Was able to acuire");
} else {
console.log("Was not to acuire"); // This will execute
}
lock.release() // now the lock is released
if(lock.acuire()){
console.log("Was able to acuire"); // This will execute
} else {
console.log("Was not to acuire");
}
lock.release() // Hey don't forget to release