Also, if you never use suspending functions, then ...

# coroutines

[elizarov]

Also, if you never use suspending functions, then there is no reason to use runAsync2. However, runAsync1 is not the best solution, either. For never-suspending code I’d recommend:

val pool = Executors.newFixedThreadPool(myOwnConcurrentLevelThatICanTune) // use pool = ForkJoinPool.commonPool() if you don’t really care about tuning

fun runAsync0(task: () -> Unit) {
  pool.execute {
    try { task() }
    catch (e: Exception) { e.printStackTrace() }
  }
}