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Commit ced7e081 authored by Mathieu Chartier's avatar Mathieu Chartier
Browse files

Add use_app_image_startup_cache feature flag 

Passed down to the zygote if the corresponding system property is set:
runtime_native / use_app_image_startup_cache.

Bug: 123524494
Bug: 116059983
Test: adb shell device_config put runtime_native use_app_image_startup_cache true

Change-Id: I27c0b9ea9533b2b6ad1ccd45f0fb9292c4cfca02
parent f727b8cf

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

+5 −0
Original line number Diff line number Diff line
@@ -99,6 +99,11 @@ public final class Zygote { 
     */

    public static final int PROFILE_FROM_SHELL = 1 << 15;



    /*

     * Enable using the ART app image startup cache

     */

    public static final int USE_APP_IMAGE_STARTUP_CACHE = 1 << 16;



    /** No external storage should be mounted. */

    public static final int MOUNT_EXTERNAL_NONE = IVold.REMOUNT_MODE_NONE;

    /** Default external storage should be mounted. */

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

+10 −0
Original line number Diff line number Diff line
@@ -41,6 +41,7 @@ import android.system.OsConstants; 
import android.system.StructCapUserData;

import android.system.StructCapUserHeader;

import android.text.Hyphenator;

import android.text.TextUtils;

import android.util.EventLog;

import android.util.Log;

import android.util.Slog;
@@ -84,6 +85,8 @@ public class ZygoteInit { 


    private static final String PROPERTY_DISABLE_OPENGL_PRELOADING = "ro.zygote.disable_gl_preload";

    private static final String PROPERTY_GFX_DRIVER = "ro.gfx.driver.0";

    private static final String PROPERTY_USE_APP_IMAGE_STARTUP_CACHE =

            "persist.device_config.runtime_native.use_app_image_startup_cache";



    private static final int LOG_BOOT_PROGRESS_PRELOAD_START = 3020;

    private static final int LOG_BOOT_PROGRESS_PRELOAD_END = 3030;
@@ -705,6 +708,13 @@ public class ZygoteInit { 
                parsedArgs.mRuntimeFlags |= Zygote.PROFILE_SYSTEM_SERVER;

            }



            String use_app_image_cache = SystemProperties.get(

                    PROPERTY_USE_APP_IMAGE_STARTUP_CACHE, "");

            // Property defaults to true currently.

            if (!TextUtils.isEmpty(use_app_image_cache) && !use_app_image_cache.equals("false")) {

                parsedArgs.mRuntimeFlags |= Zygote.USE_APP_IMAGE_STARTUP_CACHE;

            }



            /* Request to fork the system server process */

            pid = Zygote.forkSystemServer(

                    parsedArgs.mUid, parsedArgs.mGid,