Add new wakelock flag PROXIMITY_SCREEN_OFF_WAKE_LOCK.
If you create a wakelock with this flag, while the wakelock is acquired,
the screen will turn off automatically when the sensor detects an object close to the screen.
Removing the object will cause the screen to wake up again.
Added PowerManager.getSupportedWakeLockFlags(), which can be used to determine
if proximity screen off wakelocks are supported by the hardware.
Signed-off-by: Mike Lockwood <lockwood@android.com>
We are decreasing CPU usage at the cost of event latency. Events are queued up
and released to the app at the specified rate. You can
experiment with different values via:
adb shell setprop windowsmgr.max_events_per_sec 35
The new value is picked up when you let go and retouch the screen. No
reboot needed.
Also the following changes were made after profiling:
- In WindowManagerService, limit the call to userActivity() when we
have a flood touch events.
- In PowerManagerService, skip checking of permission if the caller
is system user.
- In PowerManagerService, integrated the functionality of gatherState()
into reactivateWakeLocksLocked(). They loop through the same data
structure and are called back to back.
BUG=1692771
Automated import of CL 148368
Adds stats for:
- Number of raw user events that have happened in the system.
- Number of times user activity has been reported, dividied by UID and type of activity.
- Duration of screen brightness levels in 4 buckets.
- Per-UID tracking of who has turned on Wifi and how long we can attribute it being on because of them.
Original author: hackbod
Merged from: //branches/cupcake/...
Automated import of CL 143800
