Is there a Kotlin equivalent for a Swift `DispatchQue`? I have a `MutableMap<T,T>` and I want ...

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[dewildte]

Is there a Kotlin equivalent for a Swift DispatchQue?
I have a MutableMap<T,T> 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?

[Marc Knaup]

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

[dewildte]

@Marc Knaup 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?

[Marc Knaup]

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

[nanodeath]

if you want to go that route, I'd just use synchronizedMap, but the locking is pretty coarse-grained. if you need decent throughput, use a ConcurrentHashMap like Marc suggested

[dewildte]

The map is not going to be accessed often.

[dewildte]

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

[dewildte]

Its for a Multiton pattern.

[dewildte]

If that's makes it's usage more clear.