How many threads are used by default in Dispatchers.Unconfined when working with coroutines?

Dispatchers.Unconfined in Kotlin Coroutines does not use a fixed number of threads by default.

It starts a coroutine in the current thread until the first suspension, and after resumption, it continues execution in the thread available at the moment of resumption. That is, it is not limited to a specific thread pool.

This means that the number of threads depends on the context in which the coroutine resumes and can vary.

Example:

launch(Dispatchers.Unconfined) {
    println("Running in thread: ${Thread.currentThread().name}")
    delay(1000)
    println("Resumed in thread: ${Thread.currentThread().name}")
}

The output may show different threads before and after suspension.