1 /*
2  * Copyright 2016-2020 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license.
3  */
4 
5 // This file was automatically generated from shared-mutable-state-and-concurrency.md by Knit tool. Do not edit.
6 package kotlinx.coroutines.guide.exampleSync03
7 
8 import kotlinx.coroutines.*
9 import java.util.concurrent.atomic.*
10 import kotlin.system.*
11 
massiveRunnull12 suspend fun massiveRun(action: suspend () -> Unit) {
13     val n = 100  // number of coroutines to launch
14     val k = 1000 // times an action is repeated by each coroutine
15     val time = measureTimeMillis {
16         coroutineScope { // scope for coroutines
17             repeat(n) {
18                 launch {
19                     repeat(k) { action() }
20                 }
21             }
22         }
23     }
24     println("Completed ${n * k} actions in $time ms")
25 }
26 
27 val counter = AtomicInteger()
28 
<lambda>null29 fun main() = runBlocking {
30     withContext(Dispatchers.Default) {
31         massiveRun {
32             counter.incrementAndGet()
33         }
34     }
35     println("Counter = $counter")
36 }
37