| /* |
| * Copyright 2016-2017 JetBrains s.r.o. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| // This file was automatically generated from coroutines-guide.md by Knit tool. Do not edit. |
| package guide.sync.example04 |
| |
| import kotlinx.coroutines.experimental.* |
| import kotlin.system.measureTimeMillis |
| import kotlinx.coroutines.experimental.sync.Mutex |
| |
| suspend fun massiveRun(action: suspend () -> Unit) { |
| val n = 100_000 |
| val time = measureTimeMillis { |
| val jobs = List(n) { |
| launch(CommonPool) { |
| action() |
| } |
| } |
| jobs.forEach { it.join() } |
| } |
| println("Completed in $time ms") |
| } |
| |
| val mutex = Mutex() |
| var counter = 0 |
| |
| fun main(args: Array<String>) = runBlocking<Unit> { |
| massiveRun { |
| mutex.lock() |
| try { counter++ } |
| finally { mutex.unlock() } |
| } |
| println("Counter = $counter") |
| } |