Commit d8cdd3ef authored Jun 23, 2023 by sai.gairuboina-IN009276

Watchdog and sluggishness due to multiple virtual displays created by third party apps

Problem: {
            1.Install third party app which creates virtual displays on screen off like easy boost cleaner app
            2.Open easy.booster.clean.tool
            3.Press power button to lock and then unlock
            4.repeat the step 3 for 500 times or usage over the time without reboot
}

Solution: {
    1. Over the time the snapshot time taken for multiple virtual displays takes over a minutes.
    2. Avoid taking snapshot of DEFAULT_DISPLAY for virtual displays, since we have already taken snapshot for default display.
}

Bug: 288536413
Change-Id: Iad61fe589ade31c7a78820a5655986198b8ae0f8

parent 03724475

services/core/java/com/android/server/wm/KeyguardController.java

+2 −1

Original line number	Diff line number	Diff line
		@@ -199,7 +199,8 @@ class KeyguardController {
		// handle the snapshot.
		// - The display state is ON. Because if AOD is not on or pulsing, the display state will
		// be OFF or DOZE (the path of screen off may have handled it).
		if (((aodShowing ^ keyguardShowing) \|\| (aodShowing && aodChanged && keyguardChanged))
		if (displayId == DEFAULT_DISPLAY
		&& ((aodShowing ^ keyguardShowing) \|\| (aodShowing && aodChanged && keyguardChanged))
		&& !state.mKeyguardGoingAway && Display.isOnState(
		mRootWindowContainer.getDefaultDisplay().getDisplayInfo().state)) {
		mWindowManager.mTaskSnapshotController.snapshotForSleeping(DEFAULT_DISPLAY);