diff --git a/core/java/com/android/internal/os/Zygote.java b/core/java/com/android/internal/os/Zygote.java index 1048cb4e6e3a5..56eb128558e84 100644 --- a/core/java/com/android/internal/os/Zygote.java +++ b/core/java/com/android/internal/os/Zygote.java @@ -93,6 +93,11 @@ public final class Zygote { */ public static final int PROFILE_SYSTEM_SERVER = 1 << 14; + /* + * 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. */ diff --git a/core/java/com/android/internal/os/ZygoteInit.java b/core/java/com/android/internal/os/ZygoteInit.java index 9f23797d6cccd..e132abd7e4cb7 100644 --- a/core/java/com/android/internal/os/ZygoteInit.java +++ b/core/java/com/android/internal/os/ZygoteInit.java @@ -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,