Merge "Switch "UTC time" to "Unix epoch time"" (a9b7445e) · Commits · e / os / android_frameworks_opt_telephony

src/java/com/android/internal/telephony/NitzData.java

+4 −4

Original line number	Diff line number	Diff line
		@@ -56,14 +56,14 @@ public final class NitzData {
		private final TimeZone mEmulatorHostTimeZone;

		private NitzData(String originalString, int zoneOffsetMillis, Integer dstOffsetMillis,
		long utcTimeMillis, TimeZone emulatorHostTimeZone) {
		long unixEpochTimeMillis, TimeZone emulatorHostTimeZone) {
		if (originalString == null) {
		throw new NullPointerException("originalString==null");
		}
		this.mOriginalString = originalString;
		this.mZoneOffset = zoneOffsetMillis;
		this.mDstOffset = dstOffsetMillis;
		this.mCurrentTimeMillis = utcTimeMillis;
		this.mCurrentTimeMillis = unixEpochTimeMillis;
		this.mEmulatorHostTimeZone = emulatorHostTimeZone;
		}

		@@ -130,8 +130,8 @@ public final class NitzData {

		/** A method for use in tests to create NitzData instances. */
		public static NitzData createForTests(int zoneOffsetMillis, Integer dstOffsetMillis,
		long utcTimeMillis, TimeZone emulatorHostTimeZone) {
		return new NitzData("Test data", zoneOffsetMillis, dstOffsetMillis, utcTimeMillis,
		long unixEpochTimeMillis, TimeZone emulatorHostTimeZone) {
		return new NitzData("Test data", zoneOffsetMillis, dstOffsetMillis, unixEpochTimeMillis,
		emulatorHostTimeZone);
		}

src/java/com/android/internal/telephony/NitzStateMachine.java

+2 −2

Original line number	Diff line number	Diff line
		@@ -95,8 +95,8 @@ public interface NitzStateMachine {
		int getNitzUpdateSpacingMillis();

		/**
		* If UTC time between two NITZ signals is greater than this value then the second signal
		* cannot be ignored.
		* If Unix epoch time between two NITZ signals is greater than this value then the second
		* signal cannot be ignored.
		*/
		int getNitzUpdateDiffMillis();

src/java/com/android/internal/telephony/nitz/NitzSignalInputFilterPredicateFactory.java

+9 −9

Original line number	Diff line number	Diff line
		@@ -207,24 +207,24 @@ public final class NitzSignalInputFilterPredicateFactory {
		return true;
		}

		// See if the NITZ signals have sufficiently different encoded UTC times. If yes,
		// then we want to process the new one.
		// See if the NITZ signals have sufficiently different encoded Unix epoch times. If
		// yes, then we want to process the new one.
		int nitzUpdateDiff = deviceState.getNitzUpdateDiffMillis();

		// Calculate the UTC difference between the time the two signals hold, accounting
		// for any difference in receipt time and age.
		long utcTimeDifferenceMillis = newNitzData.getCurrentTimeInMillis()
		// Calculate the Unix epoch difference between the time the two signals hold,
		// accounting for any difference in receipt time and age.
		long unixEpochTimeDifferenceMillis = newNitzData.getCurrentTimeInMillis()
		- previousNitzData.getCurrentTimeInMillis();
		long ageAdjustedElapsedRealtimeDifferenceMillis =
		newSignal.getAgeAdjustedElapsedRealtimeMillis()
		- previousSignal.getAgeAdjustedElapsedRealtimeMillis();

		// In ideal conditions, the difference between
		// ageAdjustedElapsedRealtimeSinceLastSaved and utcTimeDifferenceMillis will be zero
		// if two NITZ signals are consistent and if the elapsed realtime clock is ticking
		// at the correct rate.
		// ageAdjustedElapsedRealtimeSinceLastSaved and unixEpochTimeDifferenceMillis will
		// be zero if two NITZ signals are consistent and if the elapsed realtime clock is
		// ticking at the correct rate.
		long millisGainedOrLost = Math.abs(
		utcTimeDifferenceMillis - ageAdjustedElapsedRealtimeDifferenceMillis);
		unixEpochTimeDifferenceMillis - ageAdjustedElapsedRealtimeDifferenceMillis);
		if (millisGainedOrLost > nitzUpdateDiff) {
		return true;
		}

src/java/com/android/internal/telephony/nitz/NitzStateMachineImpl.java

+1 −1

Original line number	Diff line number	Diff line
		@@ -366,7 +366,7 @@ public final class NitzStateMachineImpl implements NitzStateMachine {
		+ " reason=" + reason);
		} else {
		TimestampedValue<Long> newNitzTime = nitzSignal.createTimeSignal();
		builder.setUtcTime(newNitzTime);
		builder.setUnixEpochTime(newNitzTime);
		builder.addDebugInfo("Sending new time suggestion"
		+ " nitzSignal=" + nitzSignal
		+ ", reason=" + reason);

src/java/com/android/internal/telephony/nitz/TimeServiceHelperImpl.java

+3 −3

Original line number	Diff line number	Diff line
		@@ -68,9 +68,9 @@ public final class TimeServiceHelperImpl implements TimeServiceHelper {

		Objects.requireNonNull(timeSuggestion);

		if (timeSuggestion.getUtcTime() != null) {
		TimestampedValue<Long> utcTime = timeSuggestion.getUtcTime();
		TelephonyMetrics.getInstance().writeNITZEvent(mSlotIndex, utcTime.getValue());
		if (timeSuggestion.getUnixEpochTime() != null) {
		TimestampedValue<Long> unixEpochTime = timeSuggestion.getUnixEpochTime();
		TelephonyMetrics.getInstance().writeNITZEvent(mSlotIndex, unixEpochTime.getValue());
		}
		mTimeDetector.suggestTelephonyTime(timeSuggestion);
		}