What's the best way to only have a single coroutine execute a piece of code (that works on both Kotl...

# coroutines

[Laxystem]

What's the best way to only have a single coroutine execute a piece of code (that works on both Kotlin/Wasm and Kotlin/JVM)? Currently using a single-threaded coroutine dispatcher with `async`/`await`. Also know of synchronized but afaik it doesn't really work?

[Laxystem]

I have a suspicion my current approach won't work - i.e. if a coroutine on the single-threaded dispatcher is suspended, it'll execute another one.

[Sam]

Can you share some more about the problem you're trying to solve? I'm not sure exactly what you mean by "only have a single coroutine execute a piece of code".

[CLOVIS]

The literal solution would be to use a Mutex , but we would need more information to assess whether it's the correct solution.

[Laxystem]

Specific thing being adding something to a map if it is missing.

[CLOVIS]

That's still too precise, can you describe what you're doing at a higher level? What is the map used for?

[Laxystem]

For providers, objects that take an ID - a URI - and return an object (from the database in this case)

[Laxystem]

Each object uses a common interface to parse the URIs and to create new ones. Thing is some providers need to use other providers, so there's a what the map is for.

[Laxystem]

Ended up just making the thing immutable