Android USB Accessory Multi Thread

Question

Headache caused by multi-threading and Android Open Accessory.

I need to communicate with a USB Accessory, but I need to do it from 2 threads.

Answer 1

As you want to do read and write in parallel, writing will always lead to a pause to read if the read is on the same part as write.

May be you can follow similar approach as ConcurrentHashMap and use different locks for different segments and lock read only if write is on the same segment else allow the read to happen.

This will

1. Avoid blocking read during write in most scenarios
2. Avoid collision and
3. Definitely wont be a single thread approach.

Hope that helps.