Merge "Keep app in high memory adjust if moving from TOP to FGS" (2105ec5f) · Commits · e / os / android_frameworks_base

core/java/android/content/Context.java

+9 −0

Original line number	Diff line number	Diff line
		@@ -326,6 +326,15 @@ public abstract class Context {
		*/
		public static final int BIND_ADJUST_WITH_ACTIVITY = 0x0080;

		/**
		* Flag for {@link #bindService}: If binding from something better than perceptible,
		* still set the adjust below perceptible. This would be used for bound services that can
		* afford to be evicted when under extreme memory pressure, but should be restarted as soon
		* as possible.
		* @hide
		*/
		public static final int BIND_ADJUST_BELOW_PERCEPTIBLE = 0x0100;

		/**
		* @hide Flag for {@link #bindService}: allows binding to a service provided
		* by an instant app. Note that the caller may not have access to the instant

services/core/java/com/android/server/am/ActivityManagerConstants.java

+10 −0

Original line number	Diff line number	Diff line
		@@ -68,6 +68,7 @@ final class ActivityManagerConstants extends ContentObserver {
		static final String KEY_BOUND_SERVICE_CRASH_MAX_RETRY = "service_crash_max_retry";
		static final String KEY_PROCESS_START_ASYNC = "process_start_async";
		static final String KEY_MEMORY_INFO_THROTTLE_TIME = "memory_info_throttle_time";
		static final String KEY_TOP_TO_FGS_GRACE_DURATION = "top_to_fgs_grace_duration";

		private static final int DEFAULT_MAX_CACHED_PROCESSES = 32;
		private static final long DEFAULT_BACKGROUND_SETTLE_TIME = 60*1000;
		@@ -97,6 +98,7 @@ final class ActivityManagerConstants extends ContentObserver {
		private static final int DEFAULT_BOUND_SERVICE_CRASH_MAX_RETRY = 16;
		private static final boolean DEFAULT_PROCESS_START_ASYNC = true;
		private static final long DEFAULT_MEMORY_INFO_THROTTLE_TIME = 5601000;
		private static final long DEFAULT_TOP_TO_FGS_GRACE_DURATION = 15 * 1000;

		// Maximum number of cached processes we will allow.
		public int MAX_CACHED_PROCESSES = DEFAULT_MAX_CACHED_PROCESSES;
		@@ -212,6 +214,10 @@ final class ActivityManagerConstants extends ContentObserver {
		// throttle requests from apps.
		public long MEMORY_INFO_THROTTLE_TIME = DEFAULT_MEMORY_INFO_THROTTLE_TIME;

		// Allow app just moving from TOP to FOREGROUND_SERVICE to stay in a higher adj value for
		// this long.
		public long TOP_TO_FGS_GRACE_DURATION = DEFAULT_TOP_TO_FGS_GRACE_DURATION;

		// Indicates whether the activity starts logging is enabled.
		// Controlled by Settings.Global.ACTIVITY_STARTS_LOGGING_ENABLED
		boolean mFlagActivityStartsLoggingEnabled;
		@@ -355,6 +361,8 @@ final class ActivityManagerConstants extends ContentObserver {
		DEFAULT_PROCESS_START_ASYNC);
		MEMORY_INFO_THROTTLE_TIME = mParser.getLong(KEY_MEMORY_INFO_THROTTLE_TIME,
		DEFAULT_MEMORY_INFO_THROTTLE_TIME);
		TOP_TO_FGS_GRACE_DURATION = mParser.getDurationMillis(KEY_TOP_TO_FGS_GRACE_DURATION,
		DEFAULT_TOP_TO_FGS_GRACE_DURATION);

		updateMaxCachedProcesses();
		}
		@@ -438,6 +446,8 @@ final class ActivityManagerConstants extends ContentObserver {
		pw.println(FLAG_PROCESS_START_ASYNC);
		pw.print(" "); pw.print(KEY_MEMORY_INFO_THROTTLE_TIME); pw.print("=");
		pw.println(MEMORY_INFO_THROTTLE_TIME);
		pw.print(" "); pw.print(KEY_TOP_TO_FGS_GRACE_DURATION); pw.print("=");
		pw.println(TOP_TO_FGS_GRACE_DURATION);

		pw.println();
		if (mOverrideMaxCachedProcesses >= 0) {

services/core/java/com/android/server/am/ActivityManagerService.java

+26 −0

Original line number	Diff line number	Diff line
		@@ -17778,6 +17778,19 @@ public class ActivityManagerService extends IActivityManager.Stub
		}
		}

		// If the app was recently in the foreground and moved to a foreground service status,
		// allow it to get a higher rank in memory for some time, compared to other foreground
		// services so that it can finish performing any persistence/processing of in-memory state.
		if (app.hasForegroundServices() && adj > ProcessList.PERCEPTIBLE_RECENT_FOREGROUND_APP_ADJ
		&& (app.lastTopTime + mConstants.TOP_TO_FGS_GRACE_DURATION > now
		\|\| app.setProcState <= ActivityManager.PROCESS_STATE_TOP)) {
		adj = ProcessList.PERCEPTIBLE_RECENT_FOREGROUND_APP_ADJ;
		app.adjType = "fg-service-act";
		if (DEBUG_OOM_ADJ_REASON \|\| logUid == appUid) {
		reportOomAdjMessageLocked(TAG_OOM_ADJ, "Raise to recent fg: " + app);
		}
		}

		if (adj > ProcessList.PERCEPTIBLE_APP_ADJ
		\|\| procState > ActivityManager.PROCESS_STATE_TRANSIENT_BACKGROUND) {
		if (app.forcingToImportant != null) {
		@@ -18045,6 +18058,10 @@ public class ActivityManagerService extends IActivityManager.Stub
		cr.trackProcState(procState, mAdjSeq, now);
		trackedProcState = true;
		}
		} else if ((cr.flags & Context.BIND_ADJUST_BELOW_PERCEPTIBLE) != 0
		&& clientAdj < ProcessList.PERCEPTIBLE_APP_ADJ
		&& adj > ProcessList.PERCEPTIBLE_APP_ADJ + 1) {
		newAdj = ProcessList.PERCEPTIBLE_APP_ADJ + 1;
		} else if ((cr.flags&Context.BIND_NOT_VISIBLE) != 0
		&& clientAdj < ProcessList.PERCEPTIBLE_APP_ADJ
		&& adj > ProcessList.PERCEPTIBLE_APP_ADJ) {
		@@ -19044,6 +19061,8 @@ public class ActivityManagerService extends IActivityManager.Stub
		// Must be called before updating setProcState
		maybeUpdateUsageStatsLocked(app, nowElapsed);

		maybeUpdateLastTopTime(app, now);

		app.setProcState = app.curProcState;
		if (app.setProcState >= ActivityManager.PROCESS_STATE_HOME) {
		app.notCachedSinceIdle = false;
		@@ -19268,6 +19287,13 @@ public class ActivityManagerService extends IActivityManager.Stub
		}
		}

		private void maybeUpdateLastTopTime(ProcessRecord app, long nowUptime) {
		if (app.setProcState <= ActivityManager.PROCESS_STATE_TOP
		&& app.curProcState > ActivityManager.PROCESS_STATE_TOP) {
		app.lastTopTime = nowUptime;
		}
		}

		private final void setProcessTrackerStateLocked(ProcessRecord proc, int memFactor, long now) {
		if (proc.thread != null && proc.baseProcessTracker != null) {
		proc.baseProcessTracker.setState(

services/core/java/com/android/server/am/ProcessList.java

+5 −0

Original line number	Diff line number	Diff line
		@@ -104,6 +104,11 @@ public final class ProcessList {
		static final int VISIBLE_APP_ADJ = 100;
		static final int VISIBLE_APP_LAYER_MAX = PERCEPTIBLE_APP_ADJ - VISIBLE_APP_ADJ - 1;

		// This is a process that was recently TOP and moved to FGS. Continue to treat it almost
		// like a foreground app for a while.
		// @see TOP_TO_FGS_GRACE_PERIOD
		static final int PERCEPTIBLE_RECENT_FOREGROUND_APP_ADJ = 50;

		// This is the process running the current foreground app. We'd really
		// rather not kill it!
		static final int FOREGROUND_APP_ADJ = 0;

services/core/java/com/android/server/am/ProcessRecord.java

+6 −0

Original line number	Diff line number	Diff line
		@@ -198,6 +198,7 @@ final class ProcessRecord implements WindowProcessListener {
		long lastRequestedGc; // When we last asked the app to do a gc
		long lastLowMemory; // When we last told the app that memory is low
		long lastProviderTime; // The last time someone else was using a provider in this process.
		long lastTopTime; // The last time the process was in the TOP state or greater.
		boolean reportLowMemory; // Set to true when waiting to report low mem
		boolean empty; // Is this an empty background process?
		boolean cached; // Is this a cached process?
		@@ -415,6 +416,11 @@ final class ProcessRecord implements WindowProcessListener {
		TimeUtils.formatDuration(lastProviderTime, nowUptime, pw);
		pw.println();
		}
		if (lastTopTime > 0) {
		pw.print(prefix); pw.print("lastTopTime=");
		TimeUtils.formatDuration(lastTopTime, nowUptime, pw);
		pw.println();
		}
		if (hasStartedServices) {
		pw.print(prefix); pw.print("hasStartedServices="); pw.println(hasStartedServices);
		}