diff options
Diffstat (limited to 'libs/gui')
| -rw-r--r-- | libs/gui/SensorEventQueue.cpp | 22 |
1 files changed, 13 insertions, 9 deletions
diff --git a/libs/gui/SensorEventQueue.cpp b/libs/gui/SensorEventQueue.cpp index 842502d..1305e9f 100644 --- a/libs/gui/SensorEventQueue.cpp +++ b/libs/gui/SensorEventQueue.cpp @@ -36,7 +36,8 @@ namespace android { // ---------------------------------------------------------------------------- SensorEventQueue::SensorEventQueue(const sp<ISensorEventConnection>& connection) - : mSensorEventConnection(connection), mRecBuffer(NULL), mAvailable(0), mConsumed(0) { + : mSensorEventConnection(connection), mRecBuffer(NULL), mAvailable(0), mConsumed(0), + mNumAcksToSend(0) { mRecBuffer = new ASensorEvent[MAX_RECEIVE_BUFFER_EVENT_COUNT]; } @@ -148,14 +149,17 @@ status_t SensorEventQueue::setEventRate(Sensor const* sensor, nsecs_t ns) const void SensorEventQueue::sendAck(const ASensorEvent* events, int count) { for (int i = 0; i < count; ++i) { if (events[i].flags & WAKE_UP_SENSOR_EVENT_NEEDS_ACK) { - // Send just a byte of data to acknowledge for the wake up sensor events - // received - char buf = '1'; - ssize_t size = ::send(mSensorChannel->getFd(), &buf, sizeof(buf), - MSG_DONTWAIT | MSG_NOSIGNAL); - if (size < 0) { - ALOGE("sendAck failure %d", size); - } + ++mNumAcksToSend; + } + } + // Send mNumAcksToSend to acknowledge for the wake up sensor events received. + if (mNumAcksToSend > 0) { + ssize_t size = ::send(mSensorChannel->getFd(), &mNumAcksToSend, sizeof(mNumAcksToSend), + MSG_DONTWAIT | MSG_NOSIGNAL); + if (size < 0) { + ALOGE("sendAck failure %d %d", size, mNumAcksToSend); + } else { + mNumAcksToSend = 0; } } return; |