start of WindowManagerService

start of WindowManagerService
frameworks/base/services/java/com/android/server/SystemServer.java
class ServerThread extends Thread {
......

@Override
public void run() {
......
WindowManagerService wm = null;
......

// Critical services...
try {
......
Slog.i(TAG, "Window Manager");
wm = WindowManagerService.main(context, power,
factoryTest != SystemServer.FACTORY_TEST_LOW_LEVEL);
ServiceManager.addService(Context.WINDOW_SERVICE, wm);

((ActivityManagerService)ServiceManager.getService("activity"))
.setWindowManager(wm);
......
} catch (RuntimeException e) {
Slog.e("System", "Failure starting core service", e);
}

......
}

......
}

frameworks\base\services\java\com\android\server\WindowManagerService.java
public static WindowManagerService main(Context context,
PowerManagerService pm, boolean haveInputMethods) {
WMThread thr = new WMThread(context, pm, haveInputMethods);
thr.start();

synchronized (thr) {
while (thr.mService == null) {
try {
thr.wait();
} catch (InterruptedException e) {
}
}
}

return thr.mService;
}

frameworks\base\core\java\android\os\Looper.java

frameworks\base\services\java\com\android\server\WindowManagerService.java
private WindowManagerService(Context context, PowerManagerService pm,
boolean haveInputMethods) {
mContext = context;
mHaveInputMethods = haveInputMethods;
mLimitedAlphaCompositing = context.getResources().getBoolean(
com.android.internal.R.bool.config_sf_limitedAlpha);

mPowerManager = pm;
mPowerManager.setPolicy(mPolicy);
PowerManager pmc = (PowerManager)context.getSystemService(Context.POWER_SERVICE);
mScreenFrozenLock = pmc.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK,
"SCREEN_FROZEN");
mScreenFrozenLock.setReferenceCounted(false);

mActivityManager = ActivityManagerNative.getDefault();
mBatteryStats = BatteryStatsService.getService();

// Get persisted window scale setting
mWindowAnimationScale = Settings.System.getFloat(context.getContentResolver(),
Settings.System.WINDOW_ANIMATION_SCALE, mWindowAnimationScale);
mTransitionAnimationScale = Settings.System.getFloat(context.getContentResolver(),
Settings.System.TRANSITION_ANIMATION_SCALE, mTransitionAnimationScale);

// Track changes to DevicePolicyManager state so we can enable/disable keyguard.
IntentFilter filter = new IntentFilter();
filter.addAction(DevicePolicyManager.ACTION_DEVICE_POLICY_MANAGER_STATE_CHANGED);
mContext.registerReceiver(mBroadcastReceiver, filter);

mHoldingScreenWakeLock = pmc.newWakeLock(PowerManager.SCREEN_BRIGHT_WAKE_LOCK,
"KEEP_SCREEN_ON_FLAG");
mHoldingScreenWakeLock.setReferenceCounted(false);

mInputManager = new InputManager(context, this);

PolicyThread thr = new PolicyThread(mPolicy, this, context, pm);
thr.start();

synchronized (thr) {
while (!thr.mRunning) {
try {
thr.wait();
} catch (InterruptedException e) {
}
}
}

mInputManager.start();

// Add ourself to the Watchdog monitors.
Watchdog.getInstance().addMonitor(this);
}

frameworks\base\services\java\com\android\server\SystemServer.java
Slog.i(TAG, "Activity Manager");
context = ActivityManagerService.main(factoryTest);

frameworks/base/core/java/android/content/Context.java

mLimitedAlphaCompositing = context.getResources().getBoolean(
com.android.internal.R.bool.config_sf_limitedAlpha);
// to get the config
http://book.51cto.com/art/201207/348776.htm
http://en.wikipedia.org/wiki/Alpha_transparency

frameworks\base\services\java\com\android\server\WindowManagerService.java
mLimitedAlphaCompositing = context.getResources().getBoolean(
com.android.internal.R.bool.config_sf_limitedAlpha);
config_sf_limitedAlpha
Flag indicating whether the surface flinger has limited alpha compositing functionality in hardware.
http://developer.oesf.biz/em/developer/reference/blueberry/com/android/internal/R.bool.html

there should be a java windowmanagerservice and a native windowmanagerservice in the new ARCH. In case native windowmanagerservice needs something from the java service, it can ask the java brother to help.

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