forked from Kotlin/kotlinx.coroutines
/
example-channel-09.kt
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/
example-channel-09.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
*
* 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.channel.example09
import kotlinx.coroutines.experimental.*
import kotlinx.coroutines.experimental.channels.*
data class Ball(var hits: Int)
fun main(args: Array<String>) = runBlocking<Unit> {
val table = Channel<Ball>() // a shared table
launch(coroutineContext) { player("ping", table) }
launch(coroutineContext) { player("pong", table) }
table.send(Ball(0)) // serve the ball
delay(1000) // delay 1 second
coroutineContext.cancelChildren() // game over, cancel them
}
suspend fun player(name: String, table: Channel<Ball>) {
for (ball in table) { // receive the ball in a loop
ball.hits++
println("$name $ball")
delay(300) // wait a bit
table.send(ball) // send the ball back
}
}