jvmTest.guide.example-channel-06.kt Maven / Gradle / Ivy

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Coroutines support libraries for Kotlin

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/*
 * 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 channels.md by Knit tool. Do not edit.
package kotlinx.coroutines.guide.exampleChannel06

import kotlinx.coroutines.*
import kotlinx.coroutines.channels.*

fun main() = runBlocking {
    val producer = produceNumbers()
    repeat(5) { launchProcessor(it, producer) }
    delay(950)
    producer.cancel() // cancel producer coroutine and thus kill them all
}

fun CoroutineScope.produceNumbers() = produce {
    var x = 1 // start from 1
    while (true) {
        send(x++) // produce next
        delay(100) // wait 0.1s
    }
}

fun CoroutineScope.launchProcessor(id: Int, channel: ReceiveChannel) = launch {
    for (msg in channel) {
        println("Processor #$id received $msg")
    }    
}