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Commit 2ce0d86a authored by Martijn Coenen's avatar Martijn Coenen
Browse files

Call into application to do AppZygote preloading. 

For now, assume a class named <package_name>.ZygotePreload
exists, with a method named doPreload() to do the preload.

This should probably be replaced by having an entry in
the manifest.

Bug: 111434506
Test: preload called
Change-Id: Id632e46087eb5c719e6b310ffe007f76d3cbaf7d
parent 01e719be

core/java/com/android/internal/os/AppZygoteInit.java

+16 −2
Original line number Diff line number Diff line
@@ -23,6 +23,8 @@ import android.util.Log; 


import java.io.DataOutputStream;

import java.io.IOException;

import java.lang.reflect.InvocationTargetException;

import java.lang.reflect.Method;



/**

 * Startup class for an Application zygote process.
@@ -70,9 +72,21 @@ class AppZygoteInit { 
        protected void handlePreloadApp(ApplicationInfo appInfo) {

            Log.i(TAG, "Beginning application preload for " + appInfo.packageName);

            LoadedApk loadedApk = new LoadedApk(null, appInfo, null, null, false, true, false);

            // Initialize the classLoader

            ClassLoader loader = loadedApk.getClassLoader();



            Class<?> cl;

            Method m;

            try {

                cl = Class.forName(appInfo.packageName + ".ZygotePreload", true, loader);

                m = cl.getMethod("doPreload");

                m.setAccessible(true);

                m.invoke(null);

            } catch (ClassNotFoundException e) {

                // Don't treat this as an error since an app may not want to do any preloads

                Log.w(TAG, "No ZygotePreload class found for " + appInfo.packageName);

            } catch (NoSuchMethodException | IllegalAccessException | InvocationTargetException e) {

                Log.e(TAG, "AppZygote application preload failed for "

                        + appInfo.packageName, e);

            }

            try {

                DataOutputStream socketOut = getSocketOutputStream();

                socketOut.writeInt(loader != null ? 1 : 0);