Comparing coroutine vs suspend function

Launching 2 coroutines one after another

• Observe that both functions are running concurrently.

Output

Coroutine-No:1 Working at index 0
Coroutine-No:2 Working at index 0
Coroutine-No:1 Working at index 1
Coroutine-No:2 Working at index 1
Coroutine-No:2 Working at index 2
Coroutine-No:1 Working at index 2
Coroutine-No:2 Working at index 3
Coroutine-No:1 Working at index 3
Coroutine-No:2 Working at index 4
Coroutine-No:1 Working at index 4
Coroutine-No:2 Working at index 5
Coroutine-No:1 Working at index 5
Coroutine-No:2 Working at index 6
Coroutine-No:1 Working at index 6
Coroutine-No:2 Working at index 7
Coroutine-No:1 Working at index 7
Coroutine-No:2 Working at index 8
Coroutine-No:1 Working at index 8
Coroutine-No:2 Working at index 9
Coroutine-No:2 completed
Coroutine-No:1 Working at index 9
Coroutine-No:1 completed

Launching 2 suspend functions one after another

• Observe that both functions are running synchronously one after another.

Output

Coroutine-No:1 Working at index 0
Coroutine-No:1 Working at index 1
Coroutine-No:1 Working at index 2
Coroutine-No:1 Working at index 3
Coroutine-No:1 Working at index 4
Coroutine-No:1 Working at index 5
Coroutine-No:1 Working at index 6
Coroutine-No:1 Working at index 7
Coroutine-No:1 Working at index 8
Coroutine-No:1 Working at index 9
Coroutine-No:1 completed
Coroutine-No:2 Working at index 0
Coroutine-No:2 Working at index 1
Coroutine-No:2 Working at index 2
Coroutine-No:2 Working at index 3
Coroutine-No:2 Working at index 4
Coroutine-No:2 Working at index 5
Coroutine-No:2 Working at index 6
Coroutine-No:2 Working at index 7
Coroutine-No:2 Working at index 8
Coroutine-No:2 Working at index 9
Coroutine-No:2 completed

Code

class NonCancellableDemoVm @Inject constructor() : ViewModel() {

    private var job: Job? = null


    fun startTwoCoroutines() {

        // Start a root coroutine
        job = CoroutineScope(Dispatchers.IO).launch {
            // Start a coroutine-1
            launch {
                coRoutineOne(1)
            }
            // Start a coroutine-2
            launch {
                coRoutineOne(2)
            }
        }
    }

    fun startTwoSuspendFunctions() {

        // Start a coroutine
        job = CoroutineScope(Dispatchers.IO).launch {
            // Start a suspend function-1
            coRoutineOne(1)
            // Start a suspend function-2
            coRoutineOne(2)
        }
    }

    private suspend fun coRoutineOne(coroutineNo: Int) {
        try {
            repeat(10) { index ->
                
                delay(500)

                // Check if the coroutine has been canceled
                if (!coroutineContext.isActive) {
                    println("Coroutine-No:$coroutineNo canceled at index $index")
                } else {
                    // Continue with the main logic
                    println("Coroutine-No:$coroutineNo Working at index $index")
                }
            }
            // Additional logic after the loop
            println("Coroutine-No:$coroutineNo completed")
        } catch (e: CancellationException) {
            // Handle cancellation-specific tasks
            println("Coroutine-No:$coroutineNo canceled")
        }
    }

    fun cancel() {
        job?.cancel()
    }


}