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Merge "Avoiding flush on-change sensors at subscription" into mnc-dr-dev

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Peng Xu 2015-10-27 22:23:21 +00:00 committed by Android (Google) Code Review
commit a78c2e65e1
1 changed files with 9 additions and 4 deletions
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13
services/sensorservice/SensorService.cpp
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@ -912,10 +912,15 @@ status_t SensorService::enable(const sp<SensorEventConnection>& connection,
status_t err = sensor->batch(connection.get(), handle, 0, samplingPeriodNs, status_t err = sensor->batch(connection.get(), handle, 0, samplingPeriodNs,
maxBatchReportLatencyNs); maxBatchReportLatencyNs);
// Call flush() before calling activate() on the sensor. Wait for a first flush complete // Call flush() before calling activate() on the sensor. Wait for a first
// event before sending events on this connection. Ignore one-shot sensors which don't // flush complete event before sending events on this connection. Ignore
// support flush(). Also if this sensor isn't already active, don't call flush(). // one-shot sensors which don't support flush(). Ignore on-change sensors
if (err == NO_ERROR && sensor->getSensor().getReportingMode() != AREPORTING_MODE_ONE_SHOT && // to maintain the on-change logic (any on-change events except the initial
// one should be trigger by a change in value). Also if this sensor isn't
// already active, don't call flush().
if (err == NO_ERROR &&
sensor->getSensor().getReportingMode() != AREPORTING_MODE_ONE_SHOT &&
sensor->getSensor().getReportingMode() != AREPORTING_MODE_ON_CHANGE &&
rec->getNumConnections() > 1) { rec->getNumConnections() > 1) {
connection->setFirstFlushPending(handle, true); connection->setFirstFlushPending(handle, true);
status_t err_flush = sensor->flush(connection.get(), handle); status_t err_flush = sensor->flush(connection.get(), handle);