IDEA（Android Studio） 调试协程

打印

每一个协程上下文，都有一个CoroutineName元素，代表此协程的名称，用于调试。要打印协程名，需求加一个JVM参数：-Dkotlinx.coroutines.debug，然后打印线程名，此时会自动带上协程名。

添加-Dkotlinx.coroutines.debug参数的方式：

举个🌰：

批量创建20个协程，并在这些协程中打印线程名

fun main() = runBlocking {
  repeat(20) {
    launch(Dispatchers.Default) {
      delay(1500)
      println("job on [${Thread.currentThread().name}]")
    }
  }
}

不加-Dkotlinx.coroutines.debug参数时，运行结果：

job on [DefaultDispatcher-worker-3]
job on [DefaultDispatcher-worker-2]
job on [DefaultDispatcher-worker-4]
job on [DefaultDispatcher-worker-6]
job on [DefaultDispatcher-worker-8]
job on [DefaultDispatcher-worker-5]
job on [DefaultDispatcher-worker-8]
job on [DefaultDispatcher-worker-7]
job on [DefaultDispatcher-worker-1]
job on [DefaultDispatcher-worker-8]
job on [DefaultDispatcher-worker-7]
job on [DefaultDispatcher-worker-5]
job on [DefaultDispatcher-worker-3]
job on [DefaultDispatcher-worker-5]
job on [DefaultDispatcher-worker-6]
job on [DefaultDispatcher-worker-4]
job on [DefaultDispatcher-worker-2]
job on [DefaultDispatcher-worker-7]
job on [DefaultDispatcher-worker-8]
job on [DefaultDispatcher-worker-1]

加-Dkotlinx.coroutines.debug参数后，运行结果：

job on  [DefaultDispatcher-worker-2 @coroutine#6]
job on  [DefaultDispatcher-worker-7 @coroutine#9]
job on  [DefaultDispatcher-worker-1 @coroutine#8]
job on  [DefaultDispatcher-worker-4 @coroutine#3]
job on  [DefaultDispatcher-worker-7 @coroutine#10]
job on  [DefaultDispatcher-worker-6 @coroutine#5]
job on  [DefaultDispatcher-worker-3 @coroutine#4]
job on  [DefaultDispatcher-worker-8 @coroutine#2]
job on  [DefaultDispatcher-worker-3 @coroutine#14]
job on  [DefaultDispatcher-worker-5 @coroutine#7]
job on  [DefaultDispatcher-worker-3 @coroutine#17]
job on  [DefaultDispatcher-worker-6 @coroutine#16]
job on  [DefaultDispatcher-worker-3 @coroutine#18]
job on  [DefaultDispatcher-worker-5 @coroutine#19]
job on  [DefaultDispatcher-worker-7 @coroutine#15]
job on  [DefaultDispatcher-worker-6 @coroutine#20]
job on  [DefaultDispatcher-worker-4 @coroutine#11]
job on  [DefaultDispatcher-worker-1 @coroutine#13]
job on  [DefaultDispatcher-worker-2 @coroutine#12]
job on  [DefaultDispatcher-worker-8 @coroutine#21]

断点

新版本的协程库，在断点的时候，可以在Debug视图中查看协程相关信息。

界面截图不贴了。