what could be a Kotlin MP counterpart of the Java

Vector

(essentially a thread safe

ArrayList

)?

I'm not sure if there is something useful for your situation in https://github.com/Kotlin/kotlinx-atomicfu. I haven't used it directly yet. I've only seen it as transitive dependency in my projects so far. But that's more like

java.util.concurrent.atomic.Atomic*Array

and not the same as Vector.

thanks for the head up, I'll give it a look

Maybe in the long run it would be better to have a look at https://github.com/Kotlin/kotlinx.collections.immutable instead.

I don't think atomicfu has collections, just locks and atomics, although I could be wrong. We implemented a very basic set of concurrently collection here: https://github.com/touchlab/Stately/, module

stately-concurrent-collections

. I assume something more comprehensive will be released at some point by somebody, but haven't heard of anything yet.