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example-sync-06.kt
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example-sync-06.kt
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/*
* 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
*
* https://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.example06
import kotlinx.coroutines.experimental.*
import kotlin.coroutines.experimental.CoroutineContext
import kotlin.system.measureTimeMillis
import kotlinx.coroutines.experimental.sync.Mutex
import kotlinx.coroutines.experimental.sync.withLock
suspend fun massiveRun(context: CoroutineContext, action: suspend () -> Unit) {
val n = 1000 // number of coroutines to launch
val k = 1000 // times an action is repeated by each coroutine
val time = measureTimeMillis {
val jobs = List(n) {
launch(context) {
repeat(k) { action() }
}
}
jobs.forEach { it.join() }
}
println("Completed ${n * k} actions in $time ms")
}
val mutex = Mutex()
var counter = 0
fun main(args: Array<String>) = runBlocking<Unit> {
massiveRun(CommonPool) {
mutex.withLock {
counter++
}
}
println("Counter = $counter")
}