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Commit 7948c873 authored by Bookatz's avatar Bookatz
Browse files

statsd atom: add WallClockTimeShifted 

In ag/4888395 we get rid of wall-clock time from EventMetrics because it
is very RAM-costly. If someone needs the wall-clock time, they can get
it from this atom instead. This way, the wall-clock time is only stored
when interesting, instead of every single event!

Bug: 113072343
Test: manual confirmation that it works
Change-Id: I10c26a4fc9c73b29233108ef1fc0e9797382a8df
parent 2aba8d3d

cmds/statsd/src/atoms.proto

+13 −1
Original line number Diff line number Diff line
@@ -89,7 +89,7 @@ message Atom { 
        ActivityForegroundStateChanged activity_foreground_state_changed = 42;

        IsolatedUidChanged isolated_uid_changed = 43;

        PacketWakeupOccurred packet_wakeup_occurred = 44;

        // 45 is available

        WallClockTimeShifted wall_clock_time_shifted = 45;

        AnomalyDetected anomaly_detected = 46;

        AppBreadcrumbReported app_breadcrumb_reported = 47;

        AppStartOccurred app_start_occurred = 48;
@@ -1433,6 +1433,18 @@ message AppBreadcrumbReported { 
    optional State state = 3;

}



/**

 * Logs the wall-clock time when a significant wall-clock time shift occurs.

 * For example, this could be due to the user manually changing the time.

 *

 * Logged from:

 *   frameworks/base/services/core/java/com/android/server/AlarmManagerService.java

 */

message WallClockTimeShifted {

    // New wall-clock time in milliseconds, according to System.currentTimeMillis().

    optional int64 wall_clock_timestamp_millis = 1;

}



/**

 * Logs when statsd detects an anomaly.

 *

services/core/java/com/android/server/AlarmManagerService.java

+3 −0
Original line number Diff line number Diff line
@@ -80,6 +80,7 @@ import android.util.Slog; 
import android.util.SparseArray;

import android.util.SparseBooleanArray;

import android.util.SparseLongArray;

import android.util.StatsLog;

import android.util.TimeUtils;

import android.util.proto.ProtoOutputStream;
@@ -3560,6 +3561,8 @@ class AlarmManagerService extends SystemService { 
                        if (DEBUG_BATCH) {

                            Slog.v(TAG, "Time changed notification from kernel; rebatching");

                        }

                        // StatsLog requires currentTimeMillis(), which == nowRTC to within usecs.

                        StatsLog.write(StatsLog.WALL_CLOCK_TIME_SHIFTED, nowRTC);

                        removeImpl(mTimeTickSender);

                        removeImpl(mDateChangeSender);

                        rebatchAllAlarms();