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Alternative for thread pools in K/N? Or depend on C-libs probably? How does multithreaded-threaded coroutines K/N manages it?

Not 100% sure about coroutines, but Reaktive has its own implementation of thread pools. <https://github.com/badoo/Reaktive/tree/master/reaktive/src/nativeCommonMain/kotlin/com/badoo/reaktive/looperthread|https://github.com/badoo/Reaktive/tree/master/reaktive/src/nativeCommonMain/kotlin/com/badoo/reaktive/looperthread>

kotlinx.coroutines does not use thread pools on native, as far as I know.

what does Dispatchers.Default use on native?

I believe it's a single background thread

Now, it's been a while since I've dug into that, so I could be wrong

Looks like single thread dispatcher: <https://github.com/Kotlin/kotlinx.coroutines/blob/native-mt/kotlinx-coroutines-core/native/src/Dispatchers.native.kt#L20>

Btw, as per the <https://github.com/Kotlin/kotlinx.coroutines/blob/native-mt/kotlin-native-sharing.md#threads-and-dispatchers|doc>

CoroutineWorker uses a thread pool <https://github.com/Autodesk/coroutineworker/tree/master/src/nativeMain/kotlin/com/autodesk/coroutineworker|https://github.com/Autodesk/coroutineworker/tree/master/src/nativeMain/kotlin/com/autodesk/coroutineworker>