Add support to log app kill stats into statsd (40eba653) · Commits · e / os / android_frameworks_base

core/java/android/app/ApplicationExitInfo.java

+25 −0

Original line number	Diff line number	Diff line
		@@ -444,6 +444,13 @@ public final class ApplicationExitInfo implements Parcelable {
		*/
		private IParcelFileDescriptorRetriever mNativeTombstoneRetriever;

		/**
		* Whether or not we've logged this into the statsd.
		*
		* for system internal use only, will not retain across processes.
		*/
		private boolean mLoggedInStatsd;

		/** @hide */
		@IntDef(prefix = { "REASON_" }, value = {
		REASON_UNKNOWN,
		@@ -890,6 +897,24 @@ public final class ApplicationExitInfo implements Parcelable {
		mNativeTombstoneRetriever = retriever;
		}

		/**
		* @see #mLoggedInStatsd
		*
		* @hide
		*/
		public boolean isLoggedInStatsd() {
		return mLoggedInStatsd;
		}

		/**
		* @see #mLoggedInStatsd
		*
		* @hide
		*/
		public void setLoggedInStatsd(boolean loggedInStatsd) {
		mLoggedInStatsd = loggedInStatsd;
		}

		@Override
		public int describeContents() {
		return 0;

core/proto/android/app/appexit_enums.proto

deleted100644 → 0

+0 −245

Original line number	Diff line number	Diff line
		/*
		* Copyright (C) 2020 The Android Open Source Project
		*
		* Licensed under the Apache License, Version 2.0 (the "License");
		* you may not use this file except in compliance with the License.
		* You may obtain a copy of the License at
		*
		* http://www.apache.org/licenses/LICENSE-2.0
		*
		* Unless required by applicable law or agreed to in writing, software
		* distributed under the License is distributed on an "AS IS" BASIS,
		* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
		* See the License for the specific language governing permissions and
		* limitations under the License.
		*/

		syntax = "proto2";
		option java_multiple_files = true;

		package android.app;

		/**
		* The reason code that why app process is killed.
		*/
		enum AppExitReasonCode {
		/**
		* Application process died due to unknown reason.
		*/
		REASON_UNKNOWN = 0;

		/**
		* Application process exit normally by itself, for example,
		* via {@link android.os.Process#exit}; {@link #status} will specify the exit code.
		*
		* <p>Applications should normally not do this, as the system has a better knowledge
		* in terms of process management.</p>
		*/
		REASON_EXIT_SELF = 1;

		/**
		* Application process died due to the result of an OS signal; for example,
		* {@link android.os.Process#SIGNAL_KILL}; {@link #status} will specify the signum.
		*/
		REASON_SIGNALED = 2;

		/**
		* Application process was killed by the system low memory killer, meaning the system was
		* under memory pressure at the time of kill.
		*/
		REASON_LOW_MEMORY = 3;

		/**
		* Application process died because of an unhandled exception in Java code.
		*/
		REASON_CRASH = 4;

		/**
		* Application process died because it's crashed due to a native code crash.
		*/
		REASON_CRASH_NATIVE = 5;

		/**
		* Application process was killed due to being unresponsive (ANR).
		*/
		REASON_ANR = 6;

		/**
		* Application process was killed because it took too long to attach to the system
		* during the start.
		*/
		REASON_INITIALIZATION_FAILURE = 7;

		/**
		* Application process was killed because of initialization failure,
		* for example, it took too long to attach to the system during the start,
		* or there was an error during initialization.
		*/
		REASON_PERMISSION_CHANGE = 8;

		/**
		* Application process was killed by the activity manager due to excessive resource usage.
		*/
		REASON_EXCESSIVE_RESOURCE_USAGE = 9;

		/**
		* Application process was killed because of the user request, for example,
		* user clicked the "Force stop" button of the application in the Settings,
		* or swiped away the application from Recents.
		*/
		REASON_USER_REQUESTED = 10;

		/**
		* Application process was killed, because the user they are running as on devices
		* with mutlple users, was stopped.
		*/
		REASON_USER_STOPPED = 11;

		/**
		* Application process was killed because its dependency was going away, for example,
		* a stable content provider connection's client will be killed if the provider is killed.
		*/
		REASON_DEPENDENCY_DIED = 12;

		/**
		* Application process was killed by the system for various other reasons,
		* for example, the application package got disabled by the user;
		* {@link #description} will specify the cause given by the system.
		*/
		REASON_OTHER = 13;
		}

		/**
		* The supplemental reason code that why app process is killed
		*/
		enum AppExitSubReasonCode {
		/**
		* Application process kills subReason is unknown.
		*/
		SUBREASON_UNKNOWN = 0;

		/**
		* Application process was killed because user quit it on the "wait for debugger" dialog.
		*/
		SUBREASON_WAIT_FOR_DEBUGGER = 1;

		/**
		* Application process was killed by the activity manager because there were too many cached
		* processes.
		*/
		SUBREASON_TOO_MANY_CACHED = 2;

		/**
		* Application process was killed by the activity manager because there were too many empty
		* processes.
		*/
		SUBREASON_TOO_MANY_EMPTY = 3;

		/**
		* Application process was killed by the activity manager because there were too many cached
		* processes and this process had been in empty state for a long time.
		*/
		SUBREASON_TRIM_EMPTY = 4;

		/**
		* Application process was killed by the activity manager because system was on
		* memory pressure and this process took large amount of cached memory.
		*/
		SUBREASON_LARGE_CACHED = 5;

		/**
		* Application process was killed by the activity manager because the system was on
		* low memory pressure for a significant amount of time since last idle.
		*/
		SUBREASON_MEMORY_PRESSURE = 6;

		/**
		* Application process was killed by the activity manager due to excessive CPU usage.
		*/
		SUBREASON_EXCESSIVE_CPU = 7;

		/**
		* System update has done (so the system update process should be killed).
		*/
		SUBREASON_SYSTEM_UPDATE_DONE = 8;

		/**
		* Kill all foreground services, for now it only occurs when enabling the quiet
		* mode for the managed profile.
		*/
		SUBREASON_KILL_ALL_FG = 9;

		/**
		* All background processes except certain ones were killed, for now it only occurs
		* when the density of the default display is changed.
		*/
		SUBREASON_KILL_ALL_BG_EXCEPT = 10;

		/**
		* The process associated with the UID was explicitly killed, for example,
		* it could be because of permission changes.
		*/
		SUBREASON_KILL_UID = 11;

		/**
		* The process was explicitly killed with its PID, typically because of
		* the low memory for surfaces.
		*/
		SUBREASON_KILL_PID = 12;

		/**
		* The start of the process was invalid.
		*/
		SUBREASON_INVALID_START = 13;

		/**
		* The process was killed because it's in an invalid state, typically
		* it's triggered from SHELL.
		*/
		SUBREASON_INVALID_STATE = 14;

		/**
		* The process was killed when it's imperceptible to user, because it was
		* in a bad state.
		*/
		SUBREASON_IMPERCEPTIBLE = 15;

		/**
		* The process was killed because it's being moved out from LRU list.
		*/
		SUBREASON_REMOVE_LRU = 16;

		/**
		* The process was killed because it's isolated and was in a cached state.
		*/
		SUBREASON_ISOLATED_NOT_NEEDED = 17;

		/**
		* The process was killed because it's in forced-app-standby state, and it's cached and
		* its uid state is idle; this would be set only when the reason is {@link #REASON_OTHER}.
		*/
		SUBREASON_CACHED_IDLE_FORCED_APP_STANDBY = 18;
		}

		/** * The relative importance level that the system places on a process.
		* Keep sync with the definitions in
		* {@link android.app.ActivityManager.RunningAppProcessInfo}
		*/
		enum Importance {
		option allow_alias = true;

		IMPORTANCE_FOREGROUND = 100;
		IMPORTANCE_FOREGROUND_SERVICE = 125;
		IMPORTANCE_TOP_SLEEPING_PRE_28 = 150;
		IMPORTANCE_VISIBLE = 200;
		IMPORTANCE_PERCEPTIBLE_PRE_26 = 130;
		IMPORTANCE_PERCEPTIBLE = 230;
		IMPORTANCE_CANT_SAVE_STATE_PRE_26 = 170;
		IMPORTANCE_SERVICE = 300;
		IMPORTANCE_TOP_SLEEPING = 325;
		IMPORTANCE_CANT_SAVE_STATE = 350;
		IMPORTANCE_CACHED = 400;
		IMPORTANCE_BACKGROUND = 400;
		IMPORTANCE_EMPTY = 500;
		IMPORTANCE_GONE = 1000;
		}

core/proto/android/app/appexitinfo.proto

+1 −1

Original line number	Diff line number	Diff line
		@@ -20,7 +20,7 @@ option java_multiple_files = true;
		package android.app;

		import "frameworks/base/core/proto/android/privacy.proto";
		import "frameworks/base/core/proto/android/app/appexit_enums.proto";
		import "frameworks/proto_logging/stats/enums/app/enums.proto";

		/**
		* An android.app.ApplicationExitInfo object.

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

+60 −1

Original line number	Diff line number	Diff line
		@@ -61,6 +61,7 @@ import com.android.internal.annotations.GuardedBy;
		import com.android.internal.annotations.VisibleForTesting;
		import com.android.internal.app.ProcessMap;
		import com.android.internal.util.ArrayUtils;
		import com.android.internal.util.FrameworkStatsLog;
		import com.android.internal.util.function.pooled.PooledLambda;
		import com.android.server.IoThread;
		import com.android.server.LocalServices;
		@@ -108,6 +109,13 @@ public final class AppExitInfoTracker {

		private static final int APP_EXIT_RAW_INFO_POOL_SIZE = 8;

		/**
		* How long we're going to hold before logging an app exit info into statsd;
		* we do this is because there could be multiple sources signaling an app exit, we'd like to
		* gather the most accurate information before logging into statsd.
		*/
		private static final long APP_EXIT_INFO_STATSD_LOG_DEBOUNCE = TimeUnit.SECONDS.toMillis(15);

		@VisibleForTesting
		static final String APP_EXIT_STORE_DIR = "procexitstore";

		@@ -384,6 +392,8 @@ public final class AppExitInfoTracker {
		ApplicationExitInfo.REASON_LOW_MEMORY);
		} else if (zygote != null) {
		updateExistingExitInfoRecordLocked(info, (Integer) zygote.second, null);
		} else {
		scheduleLogToStatsdLocked(info, false);
		}
		}
		}
		@@ -398,7 +408,7 @@ public final class AppExitInfoTracker {
		raw.getPackageName(), raw.getPackageUid(), raw.getPid());

		if (info == null) {
		addExitInfoLocked(raw);
		info = addExitInfoLocked(raw);
		} else {
		// always override the existing info since we are now more informational.
		info.setReason(raw.getReason());
		@@ -407,6 +417,7 @@ public final class AppExitInfoTracker {
		info.setTimestamp(System.currentTimeMillis());
		info.setDescription(raw.getDescription());
		}
		scheduleLogToStatsdLocked(info, true);
		}

		@GuardedBy("mLock")
		@@ -438,22 +449,29 @@ public final class AppExitInfoTracker {
		// if the record is way outdated, don't update it then (because of potential pid reuse)
		return;
		}
		boolean immediateLog = false;
		if (status != null) {
		if (OsConstants.WIFEXITED(status)) {
		info.setReason(ApplicationExitInfo.REASON_EXIT_SELF);
		info.setStatus(OsConstants.WEXITSTATUS(status));
		immediateLog = true;
		} else if (OsConstants.WIFSIGNALED(status)) {
		if (info.getReason() == ApplicationExitInfo.REASON_UNKNOWN) {
		info.setReason(ApplicationExitInfo.REASON_SIGNALED);
		info.setStatus(OsConstants.WTERMSIG(status));
		} else if (info.getReason() == ApplicationExitInfo.REASON_CRASH_NATIVE) {
		info.setStatus(OsConstants.WTERMSIG(status));
		immediateLog = true;
		}
		}
		}
		if (reason != null) {
		info.setReason(reason);
		if (reason == ApplicationExitInfo.REASON_LOW_MEMORY) {
		immediateLog = true;
		}
		}
		scheduleLogToStatsdLocked(info, immediateLog);
		}

		/**
		@@ -836,6 +854,40 @@ public final class AppExitInfoTracker {
		container.addExitInfoLocked(info);
		}

		@GuardedBy("mLock")
		private void scheduleLogToStatsdLocked(ApplicationExitInfo info, boolean immediate) {
		if (info.isLoggedInStatsd()) {
		return;
		}
		if (immediate) {
		mKillHandler.removeMessages(KillHandler.MSG_STATSD_LOG, info);
		performLogToStatsdLocked(info);
		} else if (!mKillHandler.hasMessages(KillHandler.MSG_STATSD_LOG, info)) {
		mKillHandler.sendMessageDelayed(mKillHandler.obtainMessage(
		KillHandler.MSG_STATSD_LOG, info), APP_EXIT_INFO_STATSD_LOG_DEBOUNCE);
		}
		}

		@GuardedBy("mLock")
		private void performLogToStatsdLocked(ApplicationExitInfo info) {
		if (info.isLoggedInStatsd()) {
		return;
		}
		info.setLoggedInStatsd(true);
		final String pkgName = info.getPackageName();
		String processName = info.getProcessName();
		if (TextUtils.equals(pkgName, processName)) {
		// Omit the process name here to save space
		processName = null;
		} else if (processName != null && processName.startsWith(pkgName)) {
		// Strip the prefix to save space
		processName = processName.substring(pkgName.length());
		}
		FrameworkStatsLog.write(FrameworkStatsLog.APP_PROCESS_DIED,
		info.getPackageUid(), processName, info.getReason(), info.getSubReason(),
		info.getImportance(), (int) info.getPss(), (int) info.getRss());
		}

		@GuardedBy("mLock")
		private void forEachPackageLocked(
		BiFunction<String, SparseArray<AppExitInfoContainer>, Integer> callback) {
		@@ -1532,6 +1584,7 @@ public final class AppExitInfoTracker {
		static final int MSG_CHILD_PROC_DIED = 4102;
		static final int MSG_PROC_DIED = 4103;
		static final int MSG_APP_KILL = 4104;
		static final int MSG_STATSD_LOG = 4105;

		KillHandler(Looper looper) {
		super(looper, null, true);
		@@ -1564,6 +1617,12 @@ public final class AppExitInfoTracker {
		recycleRawRecord(raw);
		}
		break;
		case MSG_STATSD_LOG: {
		synchronized (mLock) {
		performLogToStatsdLocked((ApplicationExitInfo) msg.obj);
		}
		}
		break;
		default:
		super.handleMessage(msg);
		}