| /* |
| * Copyright 2016-2020 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license. |
| */ |
| |
| // This file was automatically generated from cancellation-and-timeouts.md by Knit tool. Do not edit. |
| package kotlinx.coroutines.guide.exampleCancel09 |
| |
| import kotlinx.coroutines.* |
| |
| var acquired = 0 |
| |
| class Resource { |
| init { acquired++ } // Acquire the resource |
| fun close() { acquired-- } // Release the resource |
| } |
| |
| fun main() { |
| runBlocking { |
| repeat(100_000) { // Launch 100K coroutines |
| launch { |
| var resource: Resource? = null // Not acquired yet |
| try { |
| withTimeout(60) { // Timeout of 60 ms |
| delay(50) // Delay for 50 ms |
| resource = Resource() // Store a resource to the variable if acquired |
| } |
| // We can do something else with the resource here |
| } finally { |
| resource?.close() // Release the resource if it was acquired |
| } |
| } |
| } |
| } |
| // Outside of runBlocking all coroutines have completed |
| println(acquired) // Print the number of resources still acquired |
| } |