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Commit 1349f576 authored by Andrii Kulian's avatar Andrii Kulian Committed by Android (Google) Code Review
Browse files

Merge "Preload WindowManager Extensions to improve startup performance" into udc-dev

parents d808da44 1a7ba996

core/java/android/app/ApplicationLoaders.java

+4 −4
Original line number Diff line number Diff line
@@ -157,15 +157,15 @@ public class ApplicationLoaders { 
     * All libraries in the closure of libraries to be loaded must be in libs. A library can

     * only depend on libraries that come before it in the list.

     */

    public void createAndCacheNonBootclasspathSystemClassLoaders(SharedLibraryInfo[] libs) {

    public void createAndCacheNonBootclasspathSystemClassLoaders(List<SharedLibraryInfo> libs) {

        if (mSystemLibsCacheMap != null) {

            throw new IllegalStateException("Already cached.");

        }



        mSystemLibsCacheMap = new HashMap<String, CachedClassLoader>();

        mSystemLibsCacheMap = new HashMap<>();



        for (SharedLibraryInfo lib : libs) {

            createAndCacheNonBootclasspathSystemClassLoader(lib);

        for (int i = 0; i < libs.size(); i++) {

            createAndCacheNonBootclasspathSystemClassLoader(libs.get(i));

        }

    }

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

+33 −14
Original line number Diff line number Diff line
@@ -51,6 +51,7 @@ import android.util.EventLog; 
import android.util.Log;

import android.util.Slog;

import android.util.TimingsTraceLog;

import android.view.WindowManager;

import android.webkit.WebViewFactory;

import android.widget.TextView;
@@ -72,6 +73,8 @@ import java.io.InputStream; 
import java.io.InputStreamReader;

import java.security.Provider;

import java.security.Security;

import java.util.ArrayList;

import java.util.List;



/**

 * Startup class for the zygote process.
@@ -384,33 +387,49 @@ public class ZygoteInit { 
     * classpath.

     */

    private static void cacheNonBootClasspathClassLoaders() {

        // Ordered dependencies first

        final List<SharedLibraryInfo> libs = new ArrayList<>();

        // These libraries used to be part of the bootclasspath, but had to be removed.

        // Old system applications still get them for backwards compatibility reasons,

        // so they are cached here in order to preserve performance characteristics.

        SharedLibraryInfo hidlBase = new SharedLibraryInfo(

        libs.add(new SharedLibraryInfo(

                "/system/framework/android.hidl.base-V1.0-java.jar", null /*packageName*/,

                null /*codePaths*/, null /*name*/, 0 /*version*/, SharedLibraryInfo.TYPE_BUILTIN,

                null /*declaringPackage*/, null /*dependentPackages*/, null /*dependencies*/,

                false /*isNative*/);

        SharedLibraryInfo hidlManager = new SharedLibraryInfo(

                false /*isNative*/));

        libs.add(new SharedLibraryInfo(

                "/system/framework/android.hidl.manager-V1.0-java.jar", null /*packageName*/,

                null /*codePaths*/, null /*name*/, 0 /*version*/, SharedLibraryInfo.TYPE_BUILTIN,

                null /*declaringPackage*/, null /*dependentPackages*/, null /*dependencies*/,

                false /*isNative*/);

                false /*isNative*/));



        SharedLibraryInfo androidTestBase = new SharedLibraryInfo(

        libs.add(new SharedLibraryInfo(

                "/system/framework/android.test.base.jar", null /*packageName*/,

                null /*codePaths*/, null /*name*/, 0 /*version*/, SharedLibraryInfo.TYPE_BUILTIN,

                null /*declaringPackage*/, null /*dependentPackages*/, null /*dependencies*/,

                false /*isNative*/);



        ApplicationLoaders.getDefault().createAndCacheNonBootclasspathSystemClassLoaders(

                new SharedLibraryInfo[]{

                    // ordered dependencies first

                    hidlBase,

                    hidlManager,

                    androidTestBase,

                });

                false /*isNative*/));



        // WindowManager Extensions is an optional shared library that is required for WindowManager

        // Jetpack to fully function. Since it is a widely used library, preload it to improve apps

        // startup performance.

        if (WindowManager.hasWindowExtensionsEnabled()) {

            final String systemExtFrameworkPath =

                    new File(Environment.getSystemExtDirectory(), "framework").getPath();

            libs.add(new SharedLibraryInfo(

                    systemExtFrameworkPath + "/androidx.window.extensions.jar",

                    "androidx.window.extensions", null /*codePaths*/,

                    "androidx.window.extensions", SharedLibraryInfo.VERSION_UNDEFINED,

                    SharedLibraryInfo.TYPE_BUILTIN, null /*declaringPackage*/,

                    null /*dependentPackages*/, null /*dependencies*/, false /*isNative*/));

            libs.add(new SharedLibraryInfo(

                    systemExtFrameworkPath + "/androidx.window.sidecar.jar",

                    "androidx.window.sidecar", null /*codePaths*/,

                    "androidx.window.sidecar", SharedLibraryInfo.VERSION_UNDEFINED,

                    SharedLibraryInfo.TYPE_BUILTIN, null /*declaringPackage*/,

                    null /*dependentPackages*/, null /*dependencies*/, false /*isNative*/));

        }



        ApplicationLoaders.getDefault().createAndCacheNonBootclasspathSystemClassLoaders(libs);

    }



    /**

core/tests/coretests/src/android/app/ApplicationLoadersTest.java

+16 −14
Original line number Diff line number Diff line
@@ -16,14 +16,17 @@ 


package android.app;



import static org.junit.Assert.assertEquals;

import static org.junit.Assert.assertNotEquals;

import static org.junit.Assert.assertNotNull;

import static org.junit.Assert.assertNull;



import android.content.pm.SharedLibraryInfo;



import androidx.test.filters.SmallTest;

import androidx.test.runner.AndroidJUnit4;



import com.google.android.collect.Lists;



import org.junit.Test;

import org.junit.runner.RunWith;
@@ -48,7 +51,7 @@ public class ApplicationLoadersTest { 
    @Test

    public void testGetNonExistantLib() {

        ApplicationLoaders loaders = new ApplicationLoaders();

        assertEquals(null, loaders.getCachedNonBootclasspathSystemLib(

        assertNull(loaders.getCachedNonBootclasspathSystemLib(

                "/system/framework/nonexistantlib.jar", null, null, null));

    }
@@ -57,9 +60,9 @@ public class ApplicationLoadersTest { 
        ApplicationLoaders loaders = new ApplicationLoaders();

        SharedLibraryInfo libA = createLib(LIB_A);



        loaders.createAndCacheNonBootclasspathSystemClassLoaders(new SharedLibraryInfo[]{libA});

        loaders.createAndCacheNonBootclasspathSystemClassLoaders(Lists.newArrayList(libA));



        assertNotEquals(null, loaders.getCachedNonBootclasspathSystemLib(

        assertNotNull(loaders.getCachedNonBootclasspathSystemLib(

                LIB_A, null, null, null));

    }
@@ -71,9 +74,9 @@ public class ApplicationLoadersTest { 
        ClassLoader parent = ClassLoader.getSystemClassLoader();

        assertNotEquals(null, parent);



        loaders.createAndCacheNonBootclasspathSystemClassLoaders(new SharedLibraryInfo[]{libA});

        loaders.createAndCacheNonBootclasspathSystemClassLoaders(Lists.newArrayList(libA));



        assertEquals(null, loaders.getCachedNonBootclasspathSystemLib(

        assertNull(loaders.getCachedNonBootclasspathSystemLib(

                LIB_A, parent, null, null));

    }
@@ -82,9 +85,9 @@ public class ApplicationLoadersTest { 
        ApplicationLoaders loaders = new ApplicationLoaders();

        SharedLibraryInfo libA = createLib(LIB_A);



        loaders.createAndCacheNonBootclasspathSystemClassLoaders(new SharedLibraryInfo[]{libA});

        loaders.createAndCacheNonBootclasspathSystemClassLoaders(Lists.newArrayList(libA));



        assertEquals(null, loaders.getCachedNonBootclasspathSystemLib(

        assertNull(loaders.getCachedNonBootclasspathSystemLib(

                LIB_A, null, "other classloader", null));

    }
@@ -98,9 +101,9 @@ public class ApplicationLoadersTest { 
        ArrayList<ClassLoader> sharedLibraries = new ArrayList<>();

        sharedLibraries.add(dep);



        loaders.createAndCacheNonBootclasspathSystemClassLoaders(new SharedLibraryInfo[]{libA});

        loaders.createAndCacheNonBootclasspathSystemClassLoaders(Lists.newArrayList(libA));



        assertEquals(null, loaders.getCachedNonBootclasspathSystemLib(

        assertNull(loaders.getCachedNonBootclasspathSystemLib(

                LIB_A, null, null, sharedLibraries));

    }
@@ -112,7 +115,7 @@ public class ApplicationLoadersTest { 
        libB.addDependency(libA);



        loaders.createAndCacheNonBootclasspathSystemClassLoaders(

                new SharedLibraryInfo[]{libA, libB});

                Lists.newArrayList(libA, libB));



        ClassLoader loadA = loaders.getCachedNonBootclasspathSystemLib(

                LIB_A, null, null, null);
@@ -121,7 +124,7 @@ public class ApplicationLoadersTest { 
        ArrayList<ClassLoader> sharedLibraries = new ArrayList<>();

        sharedLibraries.add(loadA);



        assertNotEquals(null, loaders.getCachedNonBootclasspathSystemLib(

        assertNotNull(loaders.getCachedNonBootclasspathSystemLib(

                LIB_DEP_A, null, null, sharedLibraries));

    }
@@ -132,7 +135,6 @@ public class ApplicationLoadersTest { 
        SharedLibraryInfo libB = createLib(LIB_DEP_A);

        libB.addDependency(libA);



        loaders.createAndCacheNonBootclasspathSystemClassLoaders(

                new SharedLibraryInfo[]{libB, libA});

        loaders.createAndCacheNonBootclasspathSystemClassLoaders(Lists.newArrayList(libB, libA));

    }

}