This only scratches the surface of the topic. Here's a fine article that talks about implementing a crash handler for JNI that goes into some of the more complex issues of multiple stacks, signal handling, stack unwinding, and calling across languages:

http://blog.httrack.com/blog/2013/08/23/catching-posix-signa...

Aside: it's interesting how complex things which I learned in my younger years have become. From understanding how a car operates and being able to perform maintenance on it (compare rebuilding a carburetor or adjusting the timing to fuel injection and computer controlled distributorless electronic ignition, etc), to this topic, computer architecture. I'm glad I first learned these things when they were simpler. I think they might seem daunting to start learning about today. Though I guess like anything else, you start at the surface and keep digging till you're satisfied you understand the topic well enough. It's just that if you like to get to the bottom of those rabbit holes, they're all so much deeper now. Shrug.

p.s. I really enjoy reading the author's posts. They are often about something I'm familiar with, but it's neat to read someone writing about learning these things through fresh eyes. I also sometimes realize I don't know something as well as I thought. So thank you for sharing.