Kotlin SelectClause0

Posted 2022-09-12 安果移不动

    @Test
    fun `test SelectClause0`() = runBlocking<Unit> 
        val job1 = GlobalScope.launch 
            delay(100)
            println("Job 1")
        

        val job2 = GlobalScope.launch 
            delay(10)
            println("Job 2")
        
        select<Unit> 
            job1.onJoin  println("Job  1 on Job") 
            job2.onJoin  println("Job  2 on Job") 
        

        delay(1000)

    

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onJoin 方法

 

    @Test
    fun `test SelectClause2`() = runBlocking<Unit> 
        val channels = listOf(Channel<Int>(), Channel<Int>())
        println(channels)
        launch(Dispatchers.IO) 
            select<Unit> 
                launch 
                    delay(10)
                    channels[1].onSend(200)  sendChannel ->
                        println("sent on $sendChannel")
                    
                
                launch 
                    delay(100)
                    channels[0].onSend(100)  sendChannel ->
                        println("sent on $sendChannel")
                    
                
            
        

        GlobalScope.launch 
            println(channels[0].receive())
        
        GlobalScope.launch 
            println(channels[1].receive())
        
        delay(100)