incrementAndFetch

Atomically increments the current value of this AtomicInt by one and returns the new value.

@ExperimentalAtomicApifun AtomicInt.incrementAndFetch(): Int(source)

import kotlin.concurrent.atomics.AtomicInt
import kotlin.concurrent.atomics.experimental.ExperimentalAtomicApi

@OptIn(ExperimentalAtomicApi::class)
fun main() {
    val counter = AtomicInt(0)
    println("Initial value: ${counter.value}")   // 0

    val newValue = counter.incrementAndFetch()
    println("After increment: $newValue")         // 1
}

Source