Solution: Understanding context propagation
suspend fun log(msg: String) {
val name = coroutineContext[CoroutineName]?.name
println("[$name] $msg")
}
fun CoroutineScope.slog(msg: String) {
val name = coroutineContext[CoroutineName]?.name
println("[$name] $msg")
}
suspend fun main(): Unit = withContext(CoroutineName("Outer")) {
log("Starting") // [Outer] Starting
launch(CoroutineName("Inner")) {
slog("A") // [Inner] A
launch {
log("B") // [Inner] B
}
}
launch {
slog("C") // [Outer] C
}
GlobalScope.launch {
log("D") // [null] D
}
slog("Ending") // [Outer] Ending
}
