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Add initial multi-display support.

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Split the DisplayManager into two parts.  One part is bound
to a Context and takes care of Display compatibility and
caching Display objects on behalf of the Context.  The other
part is global and takes care of communicating with the
DisplayManagerService, handling callbacks, and caching
DisplayInfo objects on behalf of the process.

Implemented support for enumerating Displays and getting
callbacks when displays are added, removed or changed.

Elaborated the roles of DisplayManagerService, DisplayAdapter,
and DisplayDevice.  We now support having multiple display
adapters registered, each of which can register multiple display
devices and configure them dynamically.

Added an OverlayDisplayAdapter which is used to simulate
secondary displays by means of overlay windows.  Different
configurations of overlays can be selected using a new
setting in the Developer Settings panel.  The overlays can
be repositioned and resized by the user for convenience.

At the moment, all displays are mirrors of display 0 and
no display transformations are applied.  This will be improved
in future patches.

Refactored the way that the window manager creates its threads.
The OverlayDisplayAdapter needs to be able to use hardware
acceleration so it must share the same UI thread as the Keyguard
and window manager policy.  We now handle this explicitly as
part of starting up the system server.  This puts us in a
better position to consider how we might want to share (or not
share) Loopers among components.

Overlay displays are disabled when in safe mode or in only-core
mode to reduce the number of dependencies started in these modes.

Change-Id: Ic2a661d5448dde01b095ab150697cb6791d69bb5
This commit is contained in:
Jeff Brown
2012-08-28 03:27:37 -07:00
parent c53abc4d42
commit bd6e1500ae
30 changed files with 1789 additions and 472 deletions
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62
services/java/com/android/server/SystemServer.java
View File

@@ -28,6 +28,8 @@ import android.content.pm.IPackageManager;
import android.content.res.Configuration;
import android.media.AudioService;
import android.net.wifi.p2p.WifiP2pService;
import android.os.Handler;
import android.os.HandlerThread;
import android.os.Looper;
import android.os.RemoteException;
import android.os.SchedulingPolicyService;
@@ -147,7 +149,52 @@ class ServerThread extends Thread {
CommonTimeManagementService commonTimeMgmtService = null;
InputManagerService inputManager = null;
// Create a shared handler thread for UI within the system server.
// This thread is used by at least the following components:
// - WindowManagerPolicy
// - KeyguardViewManager
// - DisplayManagerService
HandlerThread uiHandlerThread = new HandlerThread("UI");
uiHandlerThread.start();
Handler uiHandler = new Handler(uiHandlerThread.getLooper());
uiHandler.post(new Runnable() {
@Override
public void run() {
//Looper.myLooper().setMessageLogging(new LogPrinter(
// Log.VERBOSE, "WindowManagerPolicy", Log.LOG_ID_SYSTEM));
android.os.Process.setThreadPriority(
android.os.Process.THREAD_PRIORITY_FOREGROUND);
android.os.Process.setCanSelfBackground(false);
// For debug builds, log event loop stalls to dropbox for analysis.
if (StrictMode.conditionallyEnableDebugLogging()) {
Slog.i(TAG, "Enabled StrictMode logging for UI Looper");
}
}
});
// Create a handler thread just for the window manager to enjoy.
HandlerThread wmHandlerThread = new HandlerThread("WindowManager");
wmHandlerThread.start();
Handler wmHandler = new Handler(wmHandlerThread.getLooper());
wmHandler.post(new Runnable() {
@Override
public void run() {
//Looper.myLooper().setMessageLogging(new LogPrinter(
// android.util.Log.DEBUG, TAG, android.util.Log.LOG_ID_SYSTEM));
android.os.Process.setThreadPriority(
android.os.Process.THREAD_PRIORITY_DISPLAY);
android.os.Process.setCanSelfBackground(false);
// For debug builds, log event loop stalls to dropbox for analysis.
if (StrictMode.conditionallyEnableDebugLogging()) {
Slog.i(TAG, "Enabled StrictMode logging for UI Looper");
}
}
});
// Critical services...
boolean onlyCore = false;
try {
Slog.i(TAG, "Entropy Mixer");
ServiceManager.addService("entropy", new EntropyMixer());
@@ -160,7 +207,7 @@ class ServerThread extends Thread {
context = ActivityManagerService.main(factoryTest);
Slog.i(TAG, "Display Manager");
display = new DisplayManagerService(context);
display = new DisplayManagerService(context, uiHandler);
ServiceManager.addService(Context.DISPLAY_SERVICE, display, true);
Slog.i(TAG, "Telephony Registry");
@@ -172,10 +219,14 @@ class ServerThread extends Thread {
AttributeCache.init(context);
if (!display.waitForDefaultDisplay()) {
reportWtf("Timeout waiting for default display to be initialized.",
new Throwable());
}
Slog.i(TAG, "Package Manager");
// Only run "core" apps if we're encrypting the device.
String cryptState = SystemProperties.get("vold.decrypt");
boolean onlyCore = false;
if (ENCRYPTING_STATE.equals(cryptState)) {
Slog.w(TAG, "Detected encryption in progress - only parsing core apps");
onlyCore = true;
@@ -244,6 +295,7 @@ class ServerThread extends Thread {
Slog.i(TAG, "Window Manager");
wm = WindowManagerService.main(context, power, display,
uiHandler, wmHandler,
factoryTest != SystemServer.FACTORY_TEST_LOW_LEVEL,
!firstBoot, onlyCore);
ServiceManager.addService(Context.WINDOW_SERVICE, wm);
@@ -753,6 +805,12 @@ class ServerThread extends Thread {
reportWtf("making Package Manager Service ready", e);
}
try {
display.systemReady(safeMode, onlyCore);
} catch (Throwable e) {
reportWtf("making Display Manager Service ready", e);
}
// These are needed to propagate to the runnable below.
final Context contextF = context;
final BatteryService batteryF = battery;