1 /* 2 * Copyright (C) 2022 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.android.server.art; 18 19 import android.annotation.NonNull; 20 import android.annotation.Nullable; 21 import android.annotation.SystemApi; 22 import android.os.ArtModuleServiceManager; 23 import android.os.Build; 24 25 import androidx.annotation.RequiresApi; 26 27 import com.android.internal.annotations.GuardedBy; 28 29 import java.util.Objects; 30 31 /** 32 * Class for performing registration for the ART mainline module. 33 * 34 * @hide 35 */ 36 @SystemApi(client = SystemApi.Client.SYSTEM_SERVER) 37 @RequiresApi(Build.VERSION_CODES.UPSIDE_DOWN_CAKE) 38 public class ArtModuleServiceInitializer { ArtModuleServiceInitializer()39 private ArtModuleServiceInitializer() {} 40 41 @NonNull private static Object sLock = new Object(); 42 43 // The static field is associated with the class and the class loader that loads it. In the 44 // Pre-reboot Dexopt case, this class is loaded by a separate class loader, so it doesn't share 45 // the same static field with the class outside of the class loader. 46 @GuardedBy("sLock") @Nullable private static ArtModuleServiceManager sArtModuleServiceManager; 47 48 /** 49 * Sets an instance of {@link ArtModuleServiceManager} that allows the ART mainline module to 50 * obtain ART binder services. This is called by the platform during the system server 51 * initialization. 52 */ setArtModuleServiceManager( @onNull ArtModuleServiceManager artModuleServiceManager)53 public static void setArtModuleServiceManager( 54 @NonNull ArtModuleServiceManager artModuleServiceManager) { 55 synchronized (sLock) { 56 if (sArtModuleServiceManager != null) { 57 throw new IllegalStateException("ArtModuleServiceManager is already set"); 58 } 59 sArtModuleServiceManager = artModuleServiceManager; 60 } 61 } 62 63 /** @hide */ 64 @NonNull getArtModuleServiceManager()65 public static ArtModuleServiceManager getArtModuleServiceManager() { 66 synchronized (sLock) { 67 return Objects.requireNonNull(sArtModuleServiceManager); 68 } 69 } 70 } 71