Added compatibility WAL flags for Global.Settings (ee90c03f) · Commits · e / os / android_frameworks_base

core/java/android/database/sqlite/SQLiteCompatibilityWalFlags.java

0 → 100644

+134 −0

Original line number	Diff line number	Diff line
		/*
		* Copyright (C) 2017 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 android.database.sqlite;

		import android.app.ActivityThread;
		import android.app.Application;
		import android.provider.Settings;
		import android.text.TextUtils;
		import android.util.KeyValueListParser;
		import android.util.Log;

		import com.android.internal.annotations.VisibleForTesting;

		/**
		* Helper class for accessing
		* {@link Settings.Global#SQLITE_COMPATIBILITY_WAL_FLAGS global compatibility WAL settings}.
		*
		* <p>The value of {@link Settings.Global#SQLITE_COMPATIBILITY_WAL_FLAGS} is cached on first access
		* for consistent behavior across all connections opened in the process.
		* @hide
		*/
		public class SQLiteCompatibilityWalFlags {

		private static final String TAG = "SQLiteCompatibilityWalFlags";

		private static volatile boolean sInitialized = true; // Temporarily disable flags
		private static volatile boolean sFlagsSet;
		private static volatile boolean sCompatibilityWalSupported;
		private static volatile String sWALSyncMode;
		// This flag is used to avoid recursive initialization due to circular dependency on Settings
		private static volatile boolean sCallingGlobalSettings;

		/**
		* @hide
		*/
		@VisibleForTesting
		public static boolean areFlagsSet() {
		initIfNeeded();
		return sFlagsSet;
		}

		/**
		* @hide
		*/
		@VisibleForTesting
		public static boolean isCompatibilityWalSupported() {
		initIfNeeded();
		return sCompatibilityWalSupported;
		}

		/**
		* @hide
		*/
		@VisibleForTesting
		public static String getWALSyncMode() {
		initIfNeeded();
		return sWALSyncMode;
		}

		private static void initIfNeeded() {
		if (sInitialized \|\| sCallingGlobalSettings) {
		return;
		}
		ActivityThread activityThread = ActivityThread.currentActivityThread();
		Application app = activityThread == null ? null : activityThread.getApplication();
		String flags = null;
		if (app == null) {
		Log.w(TAG, "Cannot read global setting "
		+ Settings.Global.SQLITE_COMPATIBILITY_WAL_FLAGS + " - "
		+ "Application state not available");
		} else {
		try {
		sCallingGlobalSettings = true;
		flags = Settings.Global.getString(app.getContentResolver(),
		Settings.Global.SQLITE_COMPATIBILITY_WAL_FLAGS);
		} finally {
		sCallingGlobalSettings = false;
		}
		}

		init(flags);
		}

		/**
		* @hide
		*/
		@VisibleForTesting
		public static void init(String flags) {
		if (TextUtils.isEmpty(flags)) {
		sInitialized = true;
		return;
		}
		KeyValueListParser parser = new KeyValueListParser(',');
		try {
		parser.setString(flags);
		} catch (IllegalArgumentException e) {
		Log.e(TAG, "Setting has invalid format: " + flags, e);
		sInitialized = true;
		return;
		}
		sCompatibilityWalSupported = parser.getBoolean("compatibility_wal_supported",
		SQLiteGlobal.isCompatibilityWalSupported());
		sWALSyncMode = parser.getString("wal_syncmode", SQLiteGlobal.getWALSyncMode());
		Log.i(TAG, "Read compatibility WAL flags: compatibility_wal_supported="
		+ sCompatibilityWalSupported + ", wal_syncmode=" + sWALSyncMode);
		sFlagsSet = true;
		sInitialized = true;
		}

		/**
		* @hide
		*/
		@VisibleForTesting
		public static void reset() {
		sInitialized = false;
		sFlagsSet = false;
		sCompatibilityWalSupported = false;
		sWALSyncMode = null;
		}
		}

core/java/android/database/sqlite/SQLiteConnection.java

+5 −1

Original line number	Diff line number	Diff line
		@@ -296,7 +296,11 @@ public final class SQLiteConnection implements CancellationSignal.OnCancelListen
		&& mConfiguration.syncMode == null && mConfiguration.useCompatibilityWal;
		if (walEnabled \|\| useCompatibilityWal) {
		setJournalMode("WAL");
		if (useCompatibilityWal && SQLiteCompatibilityWalFlags.areFlagsSet()) {
		setSyncMode(SQLiteCompatibilityWalFlags.getWALSyncMode());
		} else {
		setSyncMode(SQLiteGlobal.getWALSyncMode());
		}
		} else {
		setJournalMode(mConfiguration.journalMode == null
		? SQLiteGlobal.getDefaultJournalMode() : mConfiguration.journalMode);

core/java/android/database/sqlite/SQLiteConnectionPool.java

+6 −0

Original line number	Diff line number	Diff line
		@@ -1094,6 +1094,12 @@ public final class SQLiteConnectionPool implements Closeable {
		printer.println(" Open: " + mIsOpen);
		printer.println(" Max connections: " + mMaxConnectionPoolSize);
		printer.println(" Total execution time: " + mTotalExecutionTimeCounter);
		if (SQLiteCompatibilityWalFlags.areFlagsSet()) {
		printer.println(" Compatibility WAL settings: compatibility_wal_supported="
		+ SQLiteCompatibilityWalFlags
		.isCompatibilityWalSupported() + ", wal_syncmode="
		+ SQLiteCompatibilityWalFlags.getWALSyncMode());
		}
		if (mConfiguration.isLookasideConfigSet()) {
		printer.println(" Lookaside config: sz=" + mConfiguration.lookasideSlotSize
		+ " cnt=" + mConfiguration.lookasideSlotCount);

core/java/android/database/sqlite/SQLiteDatabase.java

+4 −0

Original line number	Diff line number	Diff line
		@@ -289,6 +289,10 @@ public final class SQLiteDatabase extends SQLiteClosable {
		mConfigurationLocked.journalMode = journalMode;
		mConfigurationLocked.syncMode = syncMode;
		mConfigurationLocked.useCompatibilityWal = SQLiteGlobal.isCompatibilityWalSupported();
		if (!mConfigurationLocked.isInMemoryDb() && SQLiteCompatibilityWalFlags.areFlagsSet()) {
		mConfigurationLocked.useCompatibilityWal = SQLiteCompatibilityWalFlags
		.isCompatibilityWalSupported();
		}
		}

		@Override

core/java/android/provider/Settings.java

+13 −0

Original line number	Diff line number	Diff line
		@@ -11144,6 +11144,19 @@ public final class Settings {
		public static final String NOTIFICATION_SNOOZE_OPTIONS =
		"notification_snooze_options";

		/**
		* Configuration flags for SQLite Compatibility WAL. Encoded as a key-value list, separated
		* by commas. E.g.: compatibility_wal_supported=true, wal_syncmode=OFF
		*
		* Supported keys:
		* compatibility_wal_supported (boolean)
		* wal_syncmode (String)
		*
		* @hide
		*/
		public static final String SQLITE_COMPATIBILITY_WAL_FLAGS =
		"sqlite_compatibility_wal_flags";

		/**
		* Enable GNSS Raw Measurements Full Tracking?
		* 0 = no