I have always been interested in learning how sandboxing work in Chrome or Firefox. I know that they are implemented as separate processes for different tabs or

I have always been interested in learning how sandboxing work in Chrome or Firefox. I know that they are implemented as separate processes for different tabs or even addons. What I am interested in is how those sandboxes communicate and be orchestrated with each other. I imagine there is a very efficient IPC mechanism here. Does anybody have more information or point me to a resource to learn more?