Simultaneous Object Calls

Question

If I have shared an object between 2 threads (by passing in a void pointer to the object) what happens if they both try to call (different) methods at the same time? I'm not worried about the member variables themselves, there's a mutex in place for other reasons that luckily covers that already. The main function are calling disjoint methods so there's no possibility of overlap that way, but I wasn't sure what the behavior would be if main calls thing.a() while thread calls thing.b() at the same time (or even if they just overlap for that matter).

Answer 1

没什么特别的事情，每个线程都有自己的堆栈，并且每个调用（即使是对同一个函数的调用）也将具有自己的调用框架以及自己的参数和局部变量集。