Hands-On Design Patterns with Kotlin

Coroutine starvation

We'll call both the greedyLongCoroutine() and shortCoroutine() methods 10 times each and wait until they finish:

val latch = CountDownLatch(10 * 2)fun main(args: Array<String>) {    for (i in 1..10) {        CoroutineFactory.greedyLongCoroutine(i)    }    for (i in 1..10) {        CoroutineFactory.shortCoroutine(i)    }    latch.await(10, TimeUnit.SECONDS)}

It's obvious that since coroutines are asynchronous, we'll see first 10 lines of the short coroutine then 10 lines of the long coroutine:

Done greedyLongCoroutine 2Done greedyLongCoroutine 4Done greedyLongCoroutine 3Done greedyLongCoroutine 5Done shortCoroutine 1! <= You should have finished long ago!Done shortCoroutine 2!Done shortCoroutine 3!Done shortCoroutine 4!Done shortCoroutine 5!Done shortCoroutine ...