Merge "Create jit profile file during the app startup flow." (5fac913d) · Commits · e / os / android_frameworks_base

core/java/android/app/ActivityThread.java

+88 −44

Original line number	Diff line number	Diff line
		@@ -99,6 +99,9 @@ import android.view.WindowManager;
		import android.view.WindowManagerGlobal;
		import android.renderscript.RenderScriptCacheDir;
		import android.security.keystore.AndroidKeyStoreProvider;
		import android.system.Os;
		import android.system.OsConstants;
		import android.system.ErrnoException;

		import com.android.internal.app.IVoiceInteractor;
		import com.android.internal.content.ReferrerIntent;
		@@ -783,48 +786,6 @@ public final class ActivityThread {

		setCoreSettings(coreSettings);

		/*
		* Two possible indications that this package could be
		* sharing its runtime with other packages:
		*
		* 1.) the sharedUserId attribute is set in the manifest,
		* indicating a request to share a VM with other
		* packages with the same sharedUserId.
		*
		* 2.) the application element of the manifest has an
		* attribute specifying a non-default process name,
		* indicating the desire to run in another packages VM.
		*
		* If sharing is enabled we do not have a unique application
		* in a process and therefore cannot rely on the package
		* name inside the runtime.
		*/
		IPackageManager pm = getPackageManager();
		android.content.pm.PackageInfo pi = null;
		try {
		pi = pm.getPackageInfo(appInfo.packageName, 0, UserHandle.myUserId());
		} catch (RemoteException e) {
		}
		if (pi != null) {
		boolean sharedUserIdSet = (pi.sharedUserId != null);
		boolean processNameNotDefault =
		(pi.applicationInfo != null &&
		!appInfo.packageName.equals(pi.applicationInfo.processName));
		boolean sharable = (sharedUserIdSet \|\| processNameNotDefault);

		// Tell the VMRuntime about the application, unless it is shared
		// inside a process.
		if (!sharable) {
		final List<String> codePaths = new ArrayList<>();
		codePaths.add(appInfo.sourceDir);
		if (appInfo.splitSourceDirs != null) {
		Collections.addAll(codePaths, appInfo.splitSourceDirs);
		}
		VMRuntime.registerAppInfo(appInfo.packageName, appInfo.dataDir,
		codePaths.toArray(new String[codePaths.size()]));
		}
		}

		AppBindData data = new AppBindData();
		data.processName = processName;
		data.appInfo = appInfo;
		@@ -4429,6 +4390,87 @@ public final class ActivityThread {
		}
		}

		private static void setupJitProfileSupport(LoadedApk loadedApk, File cacheDir) {
		final ApplicationInfo appInfo = loadedApk.getApplicationInfo();
		if (isSharingRuntime(appInfo)) {
		// If sharing is enabled we do not have a unique application
		// in a process and therefore cannot rely on the package
		// name inside the runtime.
		return;
		}
		final List<String> codePaths = new ArrayList<>();
		if ((appInfo.flags & ApplicationInfo.FLAG_HAS_CODE) != 0) {
		codePaths.add(appInfo.sourceDir);
		}
		if (appInfo.splitSourceDirs != null) {
		Collections.addAll(codePaths, appInfo.splitSourceDirs);
		}

		if (codePaths.isEmpty()) {
		// If there are no code paths there's no need to setup a profile file and register with
		// the runtime,
		return;
		}

		// Add an extension to the file name to better reveal its intended use.
		// Keep in sync with BackgroundDexOptService.
		final String profileExtension = ".prof";
		final File profileFile = new File(cacheDir, loadedApk.mPackageName + profileExtension);
		if (!profileFile.exists()) {
		FileDescriptor fd = null;
		try {
		final int permissions = 0600; // read-write for user.
		fd = Os.open(profileFile.getAbsolutePath(), OsConstants.O_CREAT, permissions);
		Os.fchmod(fd, permissions);
		Os.fchown(fd, appInfo.uid, appInfo.uid);
		} catch (ErrnoException e) {
		Log.w(TAG, "Unable to create jit profile file " + profileFile, e);
		try {
		Os.unlink(profileFile.getAbsolutePath());
		} catch (ErrnoException unlinkErr) {
		Log.v(TAG, "Unable to unlink jit profile file " + profileFile, unlinkErr);
		}
		return;
		} finally {
		IoUtils.closeQuietly(fd);
		}
		}

		VMRuntime.registerAppInfo(profileFile.getAbsolutePath(), appInfo.dataDir,
		codePaths.toArray(new String[codePaths.size()]));
		}

		/*
		* Two possible indications that this package could be
		* sharing its runtime with other packages:
		*
		* 1) the sharedUserId attribute is set in the manifest,
		* indicating a request to share a VM with other
		* packages with the same sharedUserId.
		*
		* 2) the application element of the manifest has an
		* attribute specifying a non-default process name,
		* indicating the desire to run in another packages VM.
		*/
		private static boolean isSharingRuntime(ApplicationInfo appInfo) {
		IPackageManager pm = getPackageManager();
		android.content.pm.PackageInfo pi = null;
		try {
		pi = pm.getPackageInfo(appInfo.packageName, 0, UserHandle.myUserId());
		} catch (RemoteException e) {
		}
		if (pi != null) {
		boolean sharedUserIdSet = (pi.sharedUserId != null);
		boolean processNameNotDefault = (pi.applicationInfo != null) &&
		!appInfo.packageName.equals(pi.applicationInfo.processName);
		boolean sharable = sharedUserIdSet \|\| processNameNotDefault;
		return sharable;
		}
		// We couldn't get information for the package. Be pessimistic and assume
		// it's sharing the runtime.
		return true;
		}

		private void updateDefaultDensity() {
		if (mCurDefaultDisplayDpi != Configuration.DENSITY_DPI_UNDEFINED
		&& mCurDefaultDisplayDpi != DisplayMetrics.DENSITY_DEVICE
		@@ -4531,12 +4573,14 @@ public final class ActivityThread {
		Log.v(TAG, "Unable to initialize \"java.io.tmpdir\" property due to missing cache directory");
		}

		// Use codeCacheDir to store generated/compiled graphics code
		// Use codeCacheDir to store generated/compiled graphics code and jit profiling data.
		final File codeCacheDir = appContext.getCodeCacheDir();
		if (codeCacheDir != null) {
		setupGraphicsSupport(data.info, codeCacheDir);
		setupJitProfileSupport(data.info, codeCacheDir);
		} else {
		Log.e(TAG, "Unable to setupGraphicsSupport due to missing code-cache directory");
		Log.e(TAG, "Unable to setupGraphicsSupport and setupJitProfileSupport " +
		"due to missing code-cache directory");
		}
		}