如何在 kotlin 协程中显示“@coroutine#2”、“@coroutine#3”、“@coroutine#1”？答案

【问题标题】：How to show "@coroutine#2","@coroutine#3","@coroutine#1" in kotlin coroutine?如何在 kotlin 协程中显示“@coroutine#2”、“@coroutine#3”、“@coroutine#1”？
【发布时间】：2020-09-05 08:51:07
【问题描述】：

import kotlinx.coroutines.*

fun log(msg: String) = println("[${Thread.currentThread().name}] $msg")

fun main() = runBlocking<Unit> {
    val a = async {
        log("I'm computing a piece of the answer")
        6
    }
    val b = async {
        log("I'm computing another piece of the answer")
        7
    }
    log("The answer is ${a.await() * b.await()}")    
}

kotlin 的文档

[main @coroutine#2] 我正在计算一个答案 [main @coroutine#3] 我正在计算另一个答案 [main @coroutine#1] 答案是 42

我的 Intellij IDEA 和 Android IDE

[main] 我正在计算一部分答案 [main] 我正在计算另一个答案 [main] 答案是 42

如何显示"@coroutine#2","@coroutine#3","@coroutine#1"????

【问题讨论】：

标签： android-studio kotlin intellij-idea kotlin-coroutines

【解决方案1】：

打开运行/调试配置窗口并将-Dkotlinx.coroutines.debug添加到VM选项：

完成之后你会得到这个输出：

[main @coroutine#2] I'm computing a piece of the answer
[main @coroutine#3] I'm computing another piece of the answer
[main @coroutine#1] : The answer is 42

【讨论】：