A modern programming language that makes developers happier.

kotlinlang

Is it possible to get the parallelism of a `CoroutineDispatcher`? I'm trying to create a mapping to <https://developer.apple.com/documentation/dispatch/dispatch_queue_t?language=objc|dispatch_queue_t> on iOS, similar to <https://kotlinlang.org/api/kotlinx.coroutines/kotlinx-coroutines-core/kotlinx.coroutines/as-executor.html|asExecutor> on the JVM. Since `dispatch_queue_t` is an opaque type, it's not possible to implement something like <https://github.com/Kotlin/kotlinx.coroutines/blob/master/kotlinx-coroutines-core/jvm/src/Executors.kt#L110-L117|DispatcherExecutor>. While it would be possible to wrap a `dispatch_queue_t` as a `CoroutineDispatcher`, I need to support the reverse, where a user provides a `CoroutineDispatcher` in common Kotlin code and I use that dispatcher as a `dispatch_queue_t` calling a native API in iOS platform code.

The best I've been able to figure is always use `dispatch_queue_create` to create a `dispatch_queue_serial_t`, assuming the dispatcher has a parallelism of 1, since I can't differentiate between serial and concurrent dispatchers definitively.

`Dispatchers.Main` should use `dispatch_get_main_queue` of course.