How to make a code thread safe in scala?

Question

I have a code in scala that, for various reasons, have few lines of code that cannot be accessed by more threads at the same time.

How to easily make it thread-safe?

Answer 1

I think that the most simple solution would be to use synchronized for critical sections (just like in Java). Here is Scala syntax for it:

someObj.synchronized {
    // tread-safe part
}

It's easy to use, but it blocks and can easily cause deadlocks, so I encourage you to look at java.util.concurrent or Akka for, probably, more complicated, but better/non-blocking solutions.