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example-context-07.kt
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example-context-07.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: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.context.example07
import kotlinx.coroutines.experimental.*
fun main(args: Array<String>) = runBlocking<Unit> {
// start a coroutine to process some kind of incoming request
val request = launch(coroutineContext) { // use the context of `runBlocking`
// spawns CPU-intensive child job in CommonPool !!!
val job = launch(coroutineContext + CommonPool) {
println("job: I am a child of the request coroutine, but with a different dispatcher")
delay(1000)
println("job: I will not execute this line if my parent request is cancelled")
}
job.join() // request completes when its sub-job completes
}
delay(500)
request.cancel() // cancel processing of the request
delay(1000) // delay a second to see what happens
println("main: Who has survived request cancellation?")
}