问题
I have done some experiments and to my knowledge, an app can create several instances of ART (AndroidRunTime) that can execute code concurrently. Each of these instances are called by the same PID than the app. Each of these ART instances can create several threads and these threads have the app PID. But is it possible for an app to have several PID simultaneously? If it is the case could you provide an example?
来源：https://stackoverflow.com/questions/41898846/is-it-possible-for-an-app-to-have-several-pid-at-the-same-time