diff options
Diffstat (limited to 'libs/gui/SensorEventQueue.cpp')
| -rw-r--r-- | libs/gui/SensorEventQueue.cpp | 18 |
1 files changed, 16 insertions, 2 deletions
diff --git a/libs/gui/SensorEventQueue.cpp b/libs/gui/SensorEventQueue.cpp index c3a9f22..b0d0f12 100644 --- a/libs/gui/SensorEventQueue.cpp +++ b/libs/gui/SensorEventQueue.cpp @@ -70,9 +70,13 @@ ssize_t SensorEventQueue::write(ASensorEvent const* events, size_t numEvents) 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 @@ -95,8 +99,18 @@ status_t SensorEventQueue::waitForEvent() const { 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 |