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kotlinlang

Is there a Kotlin equivalent for a Swift `DispatchQue`?
I have a `MutableMap&lt;T,T&gt;` and I want to make operations done to it thread safe.
So far I just wrap accesses to it in:
```val lock = Any()
synchronised(lock) { map.doTheThing() }```
Is this fine?

Locking like that is fine. But you’ll also have to lock the reads.

For dispatch-like programming check out <https://kotlinlang.org/docs/reference/coroutines-overview.html>

<@U1UQX3JCC> Thanks, I am doing that too.
So far I am just putting things in and getting things out. I wrap both operations with `synchronized` and the same static lock. Is that fine?

Yes that’s fine as long as your code is okay to be blocking.

Also in case you can use Java classes and only do simple reads/writes check out <https://docs.oracle.com/javase/8/docs/api/java/util/concurrent/ConcurrentHashMap.html>

if you want to go that route, I'd just use <https://docs.oracle.com/javase/8/docs/api/java/util/Collections.html#synchronizedMap-java.util.Map-|synchronizedMap>, but the locking is pretty coarse-grained. if you need decent throughput, use a ConcurrentHashMap like Marc suggested

The map is not going to be accessed often.

Mostly during init of the application and a few times later.