The JNI upcall is expensive. For occasional "human" events like key events, this overhead is minimal. For a mouse drag or multi-touch drag, this additional overhead may be adding too much drag on our little boards.

Talking with Bob V. and Roger R. who what been dabbling in the embedded space for a while, they each suggested we evaluate alternatives to the upcall to post an input event. Suggested:
   * a blocking down (java->native) call to get the next event
   * directly adding the event to a shared (native, java), and notify from native