Add SDK 29 sources.
Test: N/A
Change-Id: Iedb7a31029e003928eb16f7e69ed147e72bb6235
diff --git a/android/os/AppZygote.java b/android/os/AppZygote.java
new file mode 100644
index 0000000..6daa5b4
--- /dev/null
+++ b/android/os/AppZygote.java
@@ -0,0 +1,130 @@
+/*
+ * Copyright (C) 2018 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.os;
+
+import android.content.pm.ApplicationInfo;
+import android.util.Log;
+
+import com.android.internal.annotations.GuardedBy;
+
+/**
+ * AppZygote is responsible for interfacing with an application-specific zygote.
+ *
+ * Application zygotes can pre-load app-specific code and data, and this interface can
+ * be used to spawn isolated services from such an application zygote.
+ *
+ * Note that we'll have only one instance of this per application / uid combination.
+ *
+ * @hide
+ */
+public class AppZygote {
+ private static final String LOG_TAG = "AppZygote";
+
+ // UID of the Zygote itself
+ private final int mZygoteUid;
+
+ // First UID/GID of the range the AppZygote can setuid()/setgid() to
+ private final int mZygoteUidGidMin;
+
+ // Last UID/GID of the range the AppZygote can setuid()/setgid() to
+ private final int mZygoteUidGidMax;
+
+ private final Object mLock = new Object();
+
+ /**
+ * Instance that maintains the socket connection to the zygote. This is {@code null} if the
+ * zygote is not running or is not connected.
+ */
+ @GuardedBy("mLock")
+ private ChildZygoteProcess mZygote;
+
+ private final ApplicationInfo mAppInfo;
+
+ public AppZygote(ApplicationInfo appInfo, int zygoteUid, int uidGidMin, int uidGidMax) {
+ mAppInfo = appInfo;
+ mZygoteUid = zygoteUid;
+ mZygoteUidGidMin = uidGidMin;
+ mZygoteUidGidMax = uidGidMax;
+ }
+
+ /**
+ * Returns the zygote process associated with this app zygote.
+ * Creates the process if it's not already running.
+ */
+ public ChildZygoteProcess getProcess() {
+ synchronized (mLock) {
+ if (mZygote != null) return mZygote;
+
+ connectToZygoteIfNeededLocked();
+ return mZygote;
+ }
+ }
+
+ /**
+ * Stops the Zygote and kills the zygote process.
+ */
+ public void stopZygote() {
+ synchronized (mLock) {
+ stopZygoteLocked();
+ }
+ }
+
+ public ApplicationInfo getAppInfo() {
+ return mAppInfo;
+ }
+
+ @GuardedBy("mLock")
+ private void stopZygoteLocked() {
+ if (mZygote != null) {
+ // Close the connection and kill the zygote process. This will not cause
+ // child processes to be killed by itself.
+ mZygote.close();
+ Process.killProcess(mZygote.getPid());
+ mZygote = null;
+ }
+ }
+
+ @GuardedBy("mLock")
+ private void connectToZygoteIfNeededLocked() {
+ String abi = mAppInfo.primaryCpuAbi != null ? mAppInfo.primaryCpuAbi :
+ Build.SUPPORTED_ABIS[0];
+ try {
+ mZygote = Process.ZYGOTE_PROCESS.startChildZygote(
+ "com.android.internal.os.AppZygoteInit",
+ mAppInfo.processName + "_zygote",
+ mZygoteUid,
+ mZygoteUid,
+ null, // gids
+ 0, // runtimeFlags
+ "app_zygote", // seInfo
+ abi, // abi
+ abi, // acceptedAbiList
+ null, // instructionSet
+ mZygoteUidGidMin,
+ mZygoteUidGidMax);
+
+ ZygoteProcess.waitForConnectionToZygote(mZygote.getPrimarySocketAddress());
+ // preload application code in the zygote
+ Log.i(LOG_TAG, "Starting application preload.");
+ mZygote.preloadApp(mAppInfo, abi);
+ Log.i(LOG_TAG, "Application preload done.");
+ } catch (Exception e) {
+ Log.e(LOG_TAG, "Error connecting to app zygote", e);
+ stopZygoteLocked();
+ }
+ }
+}
