tree d73f96344bfb2f303be09564d0290447d82b1ab0
parent 5ea0d08fa443857500606e47ecfed85d4a1a9f43
author Ben Fennema <fennema@google.com> 1496450914 -0700
committer Ben Fennema <fennema@google.com> 1497244184 +0000

chre: fix race when detasking sensor

When detasking a sensor, an event is enqueue to unsubscribe from the sensor events.
It is possible for a sensor sample to be in the queue before the unsubscribe, causing
that sensor event to be delivered after the sensor is detasked.

We need to check the requested rate (vs the current rate, in case the sensor has
multiple requestors). Only forward samples when there is a requested rate.

Export sensorGetReqRate so chre_app.c can call it.
Change osChreApiGetTime to use sensorGetTime so it can be compared to sensor
timestamps.

Bug: 62301968
Test: run CHQTS several times and make sure sensor tests don't fail randomly
Change-Id: I56f228182c610ab82aa0e267b24de70c740d39fb
Signed-off-by: Ben Fennema <fennema@google.com>