ssize_t SensorEventQueue::read(ASensorEvent* events, size_t numEvents)
{
ssize_t size = mSensorChannel->read(events, numEvents*sizeof(events[0]));
+ LOGE_IF(size<0 && size!=-EAGAIN,
+ "SensorChannel::read error (%s)", strerror(-size));
if (size >= 0) {
if (size % sizeof(events[0])) {
// partial read!!! should never happen.
+ LOGE("SensorEventQueue partial read (event-size=%u, read=%d)",
+ sizeof(events[0]), int(size));
return -EINVAL;
}
// returns number of events read
{
const int fd = getFd();
sp<Looper> looper(getLooper());
- int32_t result = looper->pollOnce(-1);
- return (result == fd) ? status_t(NO_ERROR) : status_t(-1);
+
+ int32_t result;
+ do {
+ result = looper->pollOnce(-1);
+ if (result == ALOOPER_EVENT_ERROR) {
+ LOGE("SensorChannel::waitForEvent error (errno=%d)", errno);
+ result = -EPIPE; // unknown error, so we make up one
+ break;
+ }
+ } while (result != fd);
+
+ return result;
}
status_t SensorEventQueue::wake() const