Examples with PerfFrameMetrics com.google.firebase.perf.metrics.FrameMetricsCalculator.PerfFrameMetrics used on opensource projects

Example 11 with PerfFrameMetrics

use of com.google.firebase.perf.metrics.FrameMetricsCalculator.PerfFrameMetrics in project firebase-android-sdk by firebase.

the class FrameMetricsRecorder method stopFragment.

/**
 * Stops the sub-recording associated with the given Fragment. Fragments are sub-recordings due to
 * the way frame metrics work: frame metrics can only comes from an activity's window. An analogy
 * for sub-recording is a lap in a stopwatch.
 *
 * @param fragment the Fragment associated with the sub-recording to be stopped.
 * @return FrameMetrics accumulated during this sub-recording.
 */
public Optional<PerfFrameMetrics> stopFragment(Fragment fragment) {
    if (!isRecording) {
        logger.debug("Cannot stop sub-recording because FrameMetricsAggregator is not recording");
        return Optional.absent();
    }
    if (!fragmentSnapshotMap.containsKey(fragment)) {
        logger.debug("Sub-recording associated with key %s was not started or does not exist", fragment.getClass().getSimpleName());
        return Optional.absent();
    }
    PerfFrameMetrics snapshotStart = fragmentSnapshotMap.remove(fragment);
    Optional<PerfFrameMetrics> snapshotEnd = this.snapshot();
    if (!snapshotEnd.isAvailable()) {
        logger.debug("stopFragment(%s): snapshot() failed", fragment.getClass().getSimpleName());
        return Optional.absent();
    }
    return Optional.of(snapshotEnd.get().deltaFrameMetricsFromSnapshot(snapshotStart));
}