The biggest problem we have on the Android side of things is the steaming pile that is Broadcom's bluedroid. The codebase does its own allocation tracking, thre

The biggest problem we have on the Android side of things is the steaming pile that is Broadcom's bluedroid. The codebase does its own allocation tracking, threading, scheduling, and has state machines with call ins, outs, and backs (none of them used the same way). In my time on Glass, bluedroid was one of the biggest headaches we had with Bluetooth, not to mention the Bluetooth chip firmware. We tried to clean up as much as we could (and did a fair amount) bit the stack truly needs a rewrite from scratch. Some things you just can't incrementally fix -- especially when new features are continually dropped into the codebase from afar, without regard to the damage they do to the codebase.