Log the cached app high watermark (af0e3535) · Commits · e / os / android_frameworks_base

core/java/android/app/ActivityManagerInternal.java

+7 −0

Original line number	Diff line number	Diff line
		@@ -45,6 +45,7 @@ import android.os.TransactionTooLargeException;
		import android.os.WorkSource;
		import android.util.ArraySet;
		import android.util.Pair;
		import android.util.StatsEvent;

		import com.android.internal.os.TimeoutRecord;

		@@ -1054,4 +1055,10 @@ public abstract class ActivityManagerInternal {
		*/
		public abstract void notifyMediaProjectionEvent(int uid, @NonNull IBinder projectionToken,
		@MediaProjectionTokenEvent int event);

		/**
		* @return The stats event for the cached apps high watermark since last pull.
		*/
		@NonNull
		public abstract StatsEvent getCachedAppsHighWatermarkStats(int atomTag, boolean resetAfterPull);
		}

core/java/com/android/internal/util/QuickSelect.java

0 → 100644

+256 −0

Original line number	Diff line number	Diff line
		/*
		* Copyright (C) 2023 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.
		*/

		package com.android.internal.util;

		import android.annotation.NonNull;
		import android.annotation.Nullable;

		import java.util.Comparator;
		import java.util.List;

		/**
		* An implementation of the quick selection algorithm as described in
		* http://en.wikipedia.org/wiki/Quickselect.
		*
		* @hide
		*/
		public final class QuickSelect {
		private static <T> int selectImpl(@NonNull List<T> list, int left, int right, int k,
		@NonNull Comparator<? super T> comparator) {
		while (true) {
		if (left == right) {
		return left;
		}
		final int pivotIndex = partition(list, left, right, (left + right) >> 1, comparator);
		if (k == pivotIndex) {
		return k;
		} else if (k < pivotIndex) {
		right = pivotIndex - 1;
		} else {
		left = pivotIndex + 1;
		}
		}
		}

		private static int selectImpl(@NonNull int[] array, int left, int right, int k) {
		while (true) {
		if (left == right) {
		return left;
		}
		final int pivotIndex = partition(array, left, right, (left + right) >> 1);
		if (k == pivotIndex) {
		return k;
		} else if (k < pivotIndex) {
		right = pivotIndex - 1;
		} else {
		left = pivotIndex + 1;
		}
		}
		}

		private static int selectImpl(@NonNull long[] array, int left, int right, int k) {
		while (true) {
		if (left == right) {
		return left;
		}
		final int pivotIndex = partition(array, left, right, (left + right) >> 1);
		if (k == pivotIndex) {
		return k;
		} else if (k < pivotIndex) {
		right = pivotIndex - 1;
		} else {
		left = pivotIndex + 1;
		}
		}
		}

		private static <T> int selectImpl(@NonNull T[] array, int left, int right, int k,
		@NonNull Comparator<? super T> comparator) {
		while (true) {
		if (left == right) {
		return left;
		}
		final int pivotIndex = partition(array, left, right, (left + right) >> 1, comparator);
		if (k == pivotIndex) {
		return k;
		} else if (k < pivotIndex) {
		right = pivotIndex - 1;
		} else {
		left = pivotIndex + 1;
		}
		}
		}

		private static <T> int partition(@NonNull List<T> list, int left, int right, int pivotIndex,
		@NonNull Comparator<? super T> comparator) {
		final T pivotValue = list.get(pivotIndex);
		swap(list, right, pivotIndex);
		int storeIndex = left;
		for (int i = left; i < right; i++) {
		if (comparator.compare(list.get(i), pivotValue) < 0) {
		swap(list, storeIndex, i);
		storeIndex++;
		}
		}
		swap(list, right, storeIndex);
		return storeIndex;
		}

		private static int partition(@NonNull int[] array, int left, int right, int pivotIndex) {
		final int pivotValue = array[pivotIndex];
		swap(array, right, pivotIndex);
		int storeIndex = left;
		for (int i = left; i < right; i++) {
		if (array[i] < pivotValue) {
		swap(array, storeIndex, i);
		storeIndex++;
		}
		}
		swap(array, right, storeIndex);
		return storeIndex;
		}

		private static int partition(@NonNull long[] array, int left, int right, int pivotIndex) {
		final long pivotValue = array[pivotIndex];
		swap(array, right, pivotIndex);
		int storeIndex = left;
		for (int i = left; i < right; i++) {
		if (array[i] < pivotValue) {
		swap(array, storeIndex, i);
		storeIndex++;
		}
		}
		swap(array, right, storeIndex);
		return storeIndex;
		}

		private static <T> int partition(@NonNull T[] array, int left, int right, int pivotIndex,
		@NonNull Comparator<? super T> comparator) {
		final T pivotValue = array[pivotIndex];
		swap(array, right, pivotIndex);
		int storeIndex = left;
		for (int i = left; i < right; i++) {
		if (comparator.compare(array[i], pivotValue) < 0) {
		swap(array, storeIndex, i);
		storeIndex++;
		}
		}
		swap(array, right, storeIndex);
		return storeIndex;
		}

		private static <T> void swap(@NonNull List<T> list, int left, int right) {
		final T tmp = list.get(left);
		list.set(left, list.get(right));
		list.set(right, tmp);
		}

		private static void swap(@NonNull int[] array, int left, int right) {
		final int tmp = array[left];
		array[left] = array[right];
		array[right] = tmp;
		}

		private static void swap(@NonNull long[] array, int left, int right) {
		final long tmp = array[left];
		array[left] = array[right];
		array[right] = tmp;
		}

		private static <T> void swap(@NonNull T[] array, int left, int right) {
		final T tmp = array[left];
		array[left] = array[right];
		array[right] = tmp;
		}

		/**
		* Return the kth(0-based) smallest element from the given unsorted list.
		*
		* @param list The input list, it <b>will</b> be modified by the algorithm here.
		* @param start The start offset of the list, inclusive.
		* @param length The length of the sub list to be searched in.
		* @param k The 0-based index.
		* @param comparator The comparator which knows how to compare the elements in the list.
		* @return The kth smallest element from the given list,
		* or IllegalArgumentException will be thrown if not found.
		*/
		@Nullable
		public static <T> T select(@NonNull List<T> list, int start, int length, int k,
		@NonNull Comparator<? super T> comparator) {
		if (list == null \|\| start < 0 \|\| length <= 0 \|\| list.size() < start + length
		\|\| k < 0 \|\| length <= k) {
		throw new IllegalArgumentException();
		}
		return list.get(selectImpl(list, start, start + length - 1, k + start, comparator));
		}

		/**
		* Return the kth(0-based) smallest element from the given unsorted array.
		*
		* @param array The input array, it <b>will</b> be modified by the algorithm here.
		* @param start The start offset of the array, inclusive.
		* @param length The length of the sub array to be searched in.
		* @param k The 0-based index to search for.
		* @return The kth smallest element from the given array,
		* or IllegalArgumentException will be thrown if not found.
		*/
		public static int select(@NonNull int[] array, int start, int length, int k) {
		if (array == null \|\| start < 0 \|\| length <= 0 \|\| array.length < start + length
		\|\| k < 0 \|\| length <= k) {
		throw new IllegalArgumentException();
		}
		return array[selectImpl(array, start, start + length - 1, k + start)];
		}

		/**
		* Return the kth(0-based) smallest element from the given unsorted array.
		*
		* @param array The input array, it <b>will</b> be modified by the algorithm here.
		* @param start The start offset of the array, inclusive.
		* @param length The length of the sub array to be searched in.
		* @param k The 0-based index to search for.
		* @return The kth smallest element from the given array,
		* or IllegalArgumentException will be thrown if not found.
		*/
		public static long select(@NonNull long[] array, int start, int length, int k) {
		if (array == null \|\| start < 0 \|\| length <= 0 \|\| array.length < start + length
		\|\| k < 0 \|\| length <= k) {
		throw new IllegalArgumentException();
		}
		return array[selectImpl(array, start, start + length - 1, k + start)];
		}

		/**
		* Return the kth(0-based) smallest element from the given unsorted array.
		*
		* @param array The input array, it <b>will</b> be modified by the algorithm here.
		* @param start The start offset of the array, inclusive.
		* @param length The length of the sub array to be searched in.
		* @param k The 0-based index to search for.
		* @param comparator The comparator which knows how to compare the elements in the list.
		* @return The kth smallest element from the given array,
		* or IllegalArgumentException will be thrown if not found.
		*/
		public static <T> T select(@NonNull T[] array, int start, int length, int k,
		@NonNull Comparator<? super T> comparator) {
		if (array == null \|\| start < 0 \|\| length <= 0 \|\| array.length < start + length
		\|\| k < 0 \|\| length <= k) {
		throw new IllegalArgumentException();
		}
		return array[selectImpl(array, start, start + length - 1, k + start, comparator)];
		}
		}

core/tests/utiltests/src/com/android/internal/util/QuickSelectTest.java

0 → 100644

+152 −0

Original line number	Diff line number	Diff line
		/*
		* Copyright (C) 2023 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.
		*/

		package com.android.internal.util;

		import junit.framework.TestCase;

		import java.util.Arrays;
		import java.util.List;

		/**
		* Tests for {@link QuickSelect}.
		*/
		public final class QuickSelectTest extends TestCase {

		public void testQuickSelect() throws Exception {
		test((List<Integer>) null, 0, null);
		test(Arrays.asList(), -1, null);
		test(Arrays.asList(), 0, null);
		test(Arrays.asList(), 1, null);
		test(Arrays.asList(1), -1, 1, 0, null);
		test(Arrays.asList(1), 1, -1, 0, null);
		test(Arrays.asList(1), 0, 1, -1, null);
		test(Arrays.asList(1), 1, 1, 0, null);
		test(Arrays.asList(1), 0, 1);
		test(Arrays.asList(1), 1, null);
		test(Arrays.asList(1, 2, 3, 4, 5), 0, 1);
		test(Arrays.asList(1, 2, 3, 4, 5), 1, 2);
		test(Arrays.asList(1, 2, 3, 4, 5), 2, 3);
		test(Arrays.asList(1, 2, 3, 4, 5), 3, 4);
		test(Arrays.asList(1, 2, 3, 4, 5), 4, 5);
		test(Arrays.asList(1, 2, 3, 4, 5), 5, null);
		test(Arrays.asList(7, 10, 4, 3, 20, 15, 8, 9), 2, 7);
		test(Arrays.asList(7, 10, 4, 3, 20, 15, 8, 9), 4, 9);
		test(Arrays.asList(7, 10, 4, 3, 20, 15, 8, 9), 7, 20);
		test(Arrays.asList(7, 10, 4, 3, 20, 15, 8, 9), 8, null);
		test(Arrays.asList(7, 10, 4, 3, 20, 15, 8, 9), 1, 3, 0, 3);
		test(Arrays.asList(7, 10, 4, 3, 20, 15, 8, 9), 1, 3, 1, 4);
		test(Arrays.asList(7, 10, 4, 3, 20, 15, 8, 9), 1, 3, 2, 10);
		test(Arrays.asList(7, 10, 4, 3, 20, 15, 8, 9), 1, 3, 3, null);

		test((int[]) null, 0, null);
		test(new int[0], -1, null);
		test(new int[0], 0, null);
		test(new int[0], 1, null);
		test(new int[] {1}, -1, 1, 0, null);
		test(new int[] {1}, 1, -1, 0, null);
		test(new int[] {1}, 1, 0, -1, null);
		test(new int[] {1}, 1, 1, 0, null);
		test(new int[] {1}, 0, 1);
		test(new int[] {1}, 1, null);
		test(new int[] {1, 2, 3, 4, 5}, 0, 1);
		test(new int[] {1, 2, 3, 4, 5}, 1, 2);
		test(new int[] {1, 2, 3, 4, 5}, 2, 3);
		test(new int[] {1, 2, 3, 4, 5}, 3, 4);
		test(new int[] {1, 2, 3, 4, 5}, 4, 5);
		test(new int[] {1, 2, 3, 4, 5}, 5, null);
		test(new int[] {7, 10, 4, 3, 20, 15, 8, 9}, 2, 7);
		test(new int[] {7, 10, 4, 3, 20, 15, 8, 9}, 4, 9);
		test(new int[] {7, 10, 4, 3, 20, 15, 8, 9}, 7, 20);
		test(new int[] {7, 10, 4, 3, 20, 15, 8, 9}, 8, null);
		test(new int[] {7, 10, 4, 3, 20, 15, 8, 9}, 1, 3, 0, 3);
		test(new int[] {7, 10, 4, 3, 20, 15, 8, 9}, 1, 3, 1, 4);
		test(new int[] {7, 10, 4, 3, 20, 15, 8, 9}, 1, 3, 2, 10);
		test(new int[] {7, 10, 4, 3, 20, 15, 8, 9}, 1, 3, 3, null);

		test((long[]) null, 0, null);
		test(new long[0], -1, null);
		test(new long[0], 0, null);
		test(new long[0], 1, null);
		test(new long[] {1}, -1, 1, 0, null);
		test(new long[] {1}, 1, -1, 0, null);
		test(new long[] {1}, 1, 0, -1, null);
		test(new long[] {1}, 1, 1, 0, null);
		test(new long[] {1}, 0, 1L);
		test(new long[] {1}, 1, null);
		test(new long[] {1, 2, 3, 4, 5}, 0, 1L);
		test(new long[] {1, 2, 3, 4, 5}, 1, 2L);
		test(new long[] {1, 2, 3, 4, 5}, 2, 3L);
		test(new long[] {1, 2, 3, 4, 5}, 3, 4L);
		test(new long[] {1, 2, 3, 4, 5}, 4, 5L);
		test(new long[] {1, 2, 3, 4, 5}, 5, null);
		test(new long[] {7, 10, 4, 3, 20, 15, 8, 9}, 2, 7L);
		test(new long[] {7, 10, 4, 3, 20, 15, 8, 9}, 4, 9L);
		test(new long[] {7, 10, 4, 3, 20, 15, 8, 9}, 7, 20L);
		test(new long[] {7, 10, 4, 3, 20, 15, 8, 9}, 8, null);
		test(new long[] {7, 10, 4, 3, 20, 15, 8, 9}, 1, 3, 0, 3L);
		test(new long[] {7, 10, 4, 3, 20, 15, 8, 9}, 1, 3, 1, 4L);
		test(new long[] {7, 10, 4, 3, 20, 15, 8, 9}, 1, 3, 2, 10L);
		test(new long[] {7, 10, 4, 3, 20, 15, 8, 9}, 1, 3, 3, null);
		}

		private void test(List<Integer> input, int k, Integer expected) throws Exception {
		test(input, 0, input == null ? 0 : input.size(), k, expected);
		}

		private void test(List<Integer> input, int start, int length, int k, Integer expected)
		throws Exception {
		try {
		final Integer result = QuickSelect.select(input, start, length, k, Integer::compare);
		assertEquals(expected, result);
		} catch (IllegalArgumentException e) {
		if (expected != null) {
		throw new Exception(e);
		}
		}
		}

		private void test(int[] input, int k, Integer expected) throws Exception {
		test(input, 0, input == null ? 0 : input.length, k, expected);
		}

		private void test(int[] input, int start, int length, int k, Integer expected)
		throws Exception {
		try {
		final int result = QuickSelect.select(input, start, length, k);
		assertEquals((int) expected, result);
		} catch (IllegalArgumentException e) {
		if (expected != null) {
		throw new Exception(e);
		}
		}
		}

		private void test(long[] input, int k, Long expected) throws Exception {
		test(input, 0, input == null ? 0 : input.length, k, expected);
		}

		private void test(long[] input, int start, int length, int k, Long expected) throws Exception {
		try {
		final long result = QuickSelect.select(input, start, length, k);
		assertEquals((long) expected, result);
		} catch (IllegalArgumentException e) {
		if (expected != null) {
		throw new Exception(e);
		}
		}
		}
		}

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

+12 −1

Original line number	Diff line number	Diff line
		@@ -368,12 +368,12 @@ import android.util.FeatureFlagUtils;
		import android.util.IndentingPrintWriter;
		import android.util.IntArray;
		import android.util.Log;
		import android.util.LogWriter;
		import android.util.Pair;
		import android.util.PrintWriterPrinter;
		import android.util.Slog;
		import android.util.SparseArray;
		import android.util.SparseIntArray;
		import android.util.StatsEvent;
		import android.util.TimeUtils;
		import android.util.proto.ProtoOutputStream;
		import android.util.proto.ProtoUtils;
		@@ -1587,6 +1587,7 @@ public class ActivityManagerService extends IActivityManager.Stub
		static final int SERVICE_SHORT_FGS_TIMEOUT_MSG = 76;
		static final int SERVICE_SHORT_FGS_PROCSTATE_TIMEOUT_MSG = 77;
		static final int SERVICE_SHORT_FGS_ANR_TIMEOUT_MSG = 78;
		static final int UPDATE_CACHED_APP_HIGH_WATERMARK = 79;

		static final int FIRST_BROADCAST_QUEUE_MSG = 200;

		@@ -1930,6 +1931,9 @@ public class ActivityManagerService extends IActivityManager.Stub
		case SERVICE_SHORT_FGS_ANR_TIMEOUT_MSG: {
		mServices.onShortFgsAnrTimeout((ServiceRecord) msg.obj);
		} break;
		case UPDATE_CACHED_APP_HIGH_WATERMARK: {
		mAppProfiler.mCachedAppsWatermarkData.updateCachedAppsSnapshot((long) msg.obj);
		} break;
		}
		}
		}
		@@ -18597,6 +18601,13 @@ public class ActivityManagerService extends IActivityManager.Stub
		@MediaProjectionTokenEvent int event) {
		ActivityManagerService.this.notifyMediaProjectionEvent(uid, projectionToken, event);
		}

		@Override
		@NonNull
		public StatsEvent getCachedAppsHighWatermarkStats(int atomTag, boolean resetAfterPull) {
		return mAppProfiler.mCachedAppsWatermarkData.getCachedAppsHighWatermarkStats(
		atomTag, resetAfterPull);
		}
		}

		long inputDispatchingTimedOut(int pid, final boolean aboveSystem, TimeoutRecord timeoutRecord) {

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

+198 −4

File changed.

Preview size limit exceeded, changes collapsed.