diff options
Diffstat (limited to 'services/usage/java/com/android/server/usage/UserUsageStatsService.java')
| -rw-r--r-- | services/usage/java/com/android/server/usage/UserUsageStatsService.java | 105 |
1 files changed, 97 insertions, 8 deletions
diff --git a/services/usage/java/com/android/server/usage/UserUsageStatsService.java b/services/usage/java/com/android/server/usage/UserUsageStatsService.java index b07b815..a9f7ae0 100644 --- a/services/usage/java/com/android/server/usage/UserUsageStatsService.java +++ b/services/usage/java/com/android/server/usage/UserUsageStatsService.java @@ -59,6 +59,7 @@ class UserUsageStatsService { private final Context mContext; private final UsageStatsDatabase mDatabase; private final IntervalStats[] mCurrentStats; + private IntervalStats mAppIdleRollingWindow; private boolean mStatsChanged = false; private final UnixCalendar mDailyExpiryDate; private final StatsUpdatedListener mListener; @@ -67,6 +68,8 @@ class UserUsageStatsService { interface StatsUpdatedListener { void onStatsUpdated(); + void onStatsReloaded(); + long getAppIdleRollingWindowDurationMillis(); } UserUsageStatsService(Context context, int userId, File usageStatsDir, @@ -134,6 +137,8 @@ class UserUsageStatsService { stat.updateConfigurationStats(null, stat.lastTimeSaved); } + refreshAppIdleRollingWindow(currentTimeMillis, deviceUsageTime); + if (mDatabase.isNewUpdate()) { initializeDefaultsForApps(currentTimeMillis, deviceUsageTime, mDatabase.isFirstUpdate()); @@ -159,18 +164,23 @@ class UserUsageStatsService { for (IntervalStats stats : mCurrentStats) { stats.update(packageName, currentTimeMillis, Event.SYSTEM_INTERACTION); stats.updateBeginIdleTime(packageName, deviceUsageTime); - mStatsChanged = true; } + mAppIdleRollingWindow.update(packageName, currentTimeMillis, + Event.SYSTEM_INTERACTION); + mAppIdleRollingWindow.updateBeginIdleTime(packageName, deviceUsageTime); + mStatsChanged = true; } } // Persist the new OTA-related access stats. persistActiveStats(); } - void onTimeChanged(long oldTime, long newTime, boolean resetBeginIdleTime) { + void onTimeChanged(long oldTime, long newTime, long deviceUsageTime, + boolean resetBeginIdleTime) { persistActiveStats(); mDatabase.onTimeChanged(newTime - oldTime); loadActiveStats(newTime, /* force= */ true, resetBeginIdleTime); + refreshAppIdleRollingWindow(newTime, deviceUsageTime); } void reportEvent(UsageEvents.Event event, long deviceUsageTime) { @@ -182,7 +192,7 @@ class UserUsageStatsService { if (event.mTimeStamp >= mDailyExpiryDate.getTimeInMillis()) { // Need to rollover - rolloverStats(event.mTimeStamp); + rolloverStats(event.mTimeStamp, deviceUsageTime); } final IntervalStats currentDailyStats = mCurrentStats[UsageStatsManager.INTERVAL_DAILY]; @@ -212,6 +222,11 @@ class UserUsageStatsService { } } + if (event.mEventType != Event.CONFIGURATION_CHANGE) { + mAppIdleRollingWindow.update(event.mPackage, event.mTimeStamp, event.mEventType); + mAppIdleRollingWindow.updateBeginIdleTime(event.mPackage, deviceUsageTime); + } + notifyStatsChanged(); } @@ -223,6 +238,7 @@ class UserUsageStatsService { for (IntervalStats stats : mCurrentStats) { stats.updateBeginIdleTime(packageName, beginIdleTime); } + mAppIdleRollingWindow.updateBeginIdleTime(packageName, beginIdleTime); notifyStatsChanged(); } @@ -230,6 +246,7 @@ class UserUsageStatsService { for (IntervalStats stats : mCurrentStats) { stats.updateSystemLastUsedTime(packageName, lastUsedTime); } + mAppIdleRollingWindow.updateSystemLastUsedTime(packageName, lastUsedTime); notifyStatsChanged(); } @@ -388,9 +405,8 @@ class UserUsageStatsService { } long getBeginIdleTime(String packageName) { - final IntervalStats yearly = mCurrentStats[UsageStatsManager.INTERVAL_YEARLY]; UsageStats packageUsage; - if ((packageUsage = yearly.packageStats.get(packageName)) == null) { + if ((packageUsage = mAppIdleRollingWindow.packageStats.get(packageName)) == null) { return -1; } else { return packageUsage.getBeginIdleTime(); @@ -398,9 +414,8 @@ class UserUsageStatsService { } long getSystemLastUsedTime(String packageName) { - final IntervalStats yearly = mCurrentStats[UsageStatsManager.INTERVAL_YEARLY]; UsageStats packageUsage; - if ((packageUsage = yearly.packageStats.get(packageName)) == null) { + if ((packageUsage = mAppIdleRollingWindow.packageStats.get(packageName)) == null) { return -1; } else { return packageUsage.getLastTimeSystemUsed(); @@ -421,7 +436,7 @@ class UserUsageStatsService { } } - private void rolloverStats(final long currentTimeMillis) { + private void rolloverStats(final long currentTimeMillis, final long deviceUsageTime) { final long startTime = SystemClock.elapsedRealtime(); Slog.i(TAG, mLogPrefix + "Rolling over usage stats"); @@ -462,6 +477,8 @@ class UserUsageStatsService { } persistActiveStats(); + refreshAppIdleRollingWindow(currentTimeMillis, deviceUsageTime); + final long totalTime = SystemClock.elapsedRealtime() - startTime; Slog.i(TAG, mLogPrefix + "Rolling over usage stats complete. Took " + totalTime + " milliseconds"); @@ -521,6 +538,7 @@ class UserUsageStatsService { } } } + mStatsChanged = false; mDailyExpiryDate.setTimeInMillis(currentTimeMillis); mDailyExpiryDate.addDays(1); @@ -528,6 +546,74 @@ class UserUsageStatsService { Slog.i(TAG, mLogPrefix + "Rollover scheduled @ " + sDateFormat.format(mDailyExpiryDate.getTimeInMillis()) + "(" + tempCal.getTimeInMillis() + ")"); + + // Tell the listener that the stats reloaded, which may have changed idle states. + mListener.onStatsReloaded(); + } + + private static void mergePackageStats(IntervalStats dst, IntervalStats src, + final long deviceUsageTime) { + dst.endTime = Math.max(dst.endTime, src.endTime); + + final int srcPackageCount = src.packageStats.size(); + for (int i = 0; i < srcPackageCount; i++) { + final String packageName = src.packageStats.keyAt(i); + final UsageStats srcStats = src.packageStats.valueAt(i); + UsageStats dstStats = dst.packageStats.get(packageName); + if (dstStats == null) { + dstStats = new UsageStats(srcStats); + dst.packageStats.put(packageName, dstStats); + } else { + dstStats.add(src.packageStats.valueAt(i)); + } + + // App idle times can not begin in the future. This happens if we had a time change. + if (dstStats.mBeginIdleTime > deviceUsageTime) { + dstStats.mBeginIdleTime = deviceUsageTime; + } + } + } + + /** + * App idle operates on a rolling window of time. When we roll over time, we end up with a + * period of time where in-memory stats are empty and we don't hit the disk for older stats + * for performance reasons. Suddenly all apps will become idle. + * + * Instead, at times we do a deep query to find all the apps that have run in the past few + * days and keep the cached data up to date. + * + * @param currentTimeMillis + */ + void refreshAppIdleRollingWindow(final long currentTimeMillis, final long deviceUsageTime) { + // Start the rolling window for AppIdle requests. + final long startRangeMillis = currentTimeMillis - + mListener.getAppIdleRollingWindowDurationMillis(); + + List<IntervalStats> stats = mDatabase.queryUsageStats(UsageStatsManager.INTERVAL_DAILY, + startRangeMillis, currentTimeMillis, new StatCombiner<IntervalStats>() { + @Override + public void combine(IntervalStats stats, boolean mutable, + List<IntervalStats> accumulatedResult) { + IntervalStats accum; + if (accumulatedResult.isEmpty()) { + accum = new IntervalStats(); + accum.beginTime = stats.beginTime; + accumulatedResult.add(accum); + } else { + accum = accumulatedResult.get(0); + } + + mergePackageStats(accum, stats, deviceUsageTime); + } + }); + + if (stats == null || stats.isEmpty()) { + mAppIdleRollingWindow = new IntervalStats(); + mergePackageStats(mAppIdleRollingWindow, + mCurrentStats[UsageStatsManager.INTERVAL_YEARLY], deviceUsageTime); + } else { + mAppIdleRollingWindow = stats.get(0); + } } // @@ -552,6 +638,9 @@ class UserUsageStatsService { pw.println(" stats"); printIntervalStats(pw, mCurrentStats[interval], screenOnTime, true); } + + pw.println("AppIdleRollingWindow cache"); + printIntervalStats(pw, mAppIdleRollingWindow, screenOnTime, true); } private String formatDateTime(long dateTime, boolean pretty) { |