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Add use_app_image_startup_cache feature flag

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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
This commit is contained in:
Mathieu Chartier
2019-02-04 13:28:36 -08:00
parent f727b8cf97
commit ced7e08129
2 changed files with 15 additions and 0 deletions
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5
core/java/com/android/internal/os/Zygote.java
View File

@@ -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. */

10
core/java/com/android/internal/os/ZygoteInit.java
View File

@@ -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,