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Commit 0e5bb7f1 authored by Mike Lockwood's avatar Mike Lockwood
Browse files

PowerManagerService: Hold a wakelock while mProximityTask is queued 



This prevents the device from sleeping while a deferred proximity sensor
event is pending.
Fixes b/2260005 (Proximity sensor can fail due to missing wakelock)

Change-Id: Ia4825f548b5b7d8a0b184f720b32c2f21b77b96e
Signed-off-by: default avatarMike Lockwood <lockwood@android.com>
parent d12ba5e0

services/java/com/android/server/PowerManagerService.java

+30 −1
Original line number Diff line number Diff line
@@ -185,6 +185,7 @@ class PowerManagerService extends IPowerManager.Stub 
    private UnsynchronizedWakeLock mStayOnWhilePluggedInScreenDimLock;

    private UnsynchronizedWakeLock mStayOnWhilePluggedInPartialLock;

    private UnsynchronizedWakeLock mPreventScreenOnPartialLock;

    private UnsynchronizedWakeLock mProximityPartialLock;

    private HandlerThread mHandlerThread;

    private Handler mHandler;

    private TimeoutTask mTimeoutTask = new TimeoutTask();
@@ -283,6 +284,7 @@ class PowerManagerService extends IPowerManager.Stub 
        IBinder mToken;

        int mCount = 0;

        boolean mRefCounted;

        boolean mHeld;



        UnsynchronizedWakeLock(int flags, String tag, boolean refCounted) {

            mFlags = flags;
@@ -297,6 +299,7 @@ class PowerManagerService extends IPowerManager.Stub 
                try {

                    PowerManagerService.this.acquireWakeLockLocked(mFlags, mToken,

                            MY_UID, mTag);

                    mHeld = true;

                } finally {

                    Binder.restoreCallingIdentity(ident);

                }
@@ -306,15 +309,21 @@ class PowerManagerService extends IPowerManager.Stub 
        public void release() {

            if (!mRefCounted || --mCount == 0) {

                PowerManagerService.this.releaseWakeLockLocked(mToken, false);

                mHeld = false;

            }

            if (mCount < 0) {

                throw new RuntimeException("WakeLock under-locked " + mTag);

            }

        }



        public boolean isHeld()

        {

            return mHeld;

        }



        public String toString() {

            return "UnsynchronizedWakeLock(mFlags=0x" + Integer.toHexString(mFlags)

                    + " mCount=" + mCount + ")";

                    + " mCount=" + mCount + " mHeld=" + mHeld + ")";

        }

    }
@@ -443,6 +452,8 @@ class PowerManagerService extends IPowerManager.Stub 
                                PowerManager.PARTIAL_WAKE_LOCK, "StayOnWhilePluggedIn Partial", false);

        mPreventScreenOnPartialLock = new UnsynchronizedWakeLock(

                                PowerManager.PARTIAL_WAKE_LOCK, "PreventScreenOn Partial", false);

        mProximityPartialLock = new UnsynchronizedWakeLock(

                                PowerManager.PARTIAL_WAKE_LOCK, "Proximity Partial", false);



        mScreenOnIntent = new Intent(Intent.ACTION_SCREEN_ON);

        mScreenOnIntent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY);
@@ -907,6 +918,7 @@ class PowerManagerService extends IPowerManager.Stub 
        pw.println("  mStayOnWhilePluggedInScreenDimLock=" + mStayOnWhilePluggedInScreenDimLock);

        pw.println("  mStayOnWhilePluggedInPartialLock=" + mStayOnWhilePluggedInPartialLock);

        pw.println("  mPreventScreenOnPartialLock=" + mPreventScreenOnPartialLock);

        pw.println("  mProximityPartialLock=" + mProximityPartialLock);

        pw.println("  mProximityWakeLockCount=" + mProximityWakeLockCount);

        pw.println("  mProximitySensorEnabled=" + mProximitySensorEnabled);

        pw.println("  mProximitySensorActive=" + mProximitySensorActive);
@@ -1951,6 +1963,9 @@ class PowerManagerService extends IPowerManager.Stub 
                    proximityChangedLocked(mProximityPendingValue == 1);

                    mProximityPendingValue = -1;

                }

                if (mProximityPartialLock.isHeld()) {

                    mProximityPartialLock.release();

                }

            }

        }

    };
@@ -2412,6 +2427,9 @@ class PowerManagerService extends IPowerManager.Stub 
            try {

                mSensorManager.unregisterListener(mProximityListener);

                mHandler.removeCallbacks(mProximityTask);

                if (mProximityPartialLock.isHeld()) {

                    mProximityPartialLock.release();

                }

                mProximitySensorEnabled = false;

            } finally {

                Binder.restoreCallingIdentity(identity);
@@ -2478,6 +2496,7 @@ class PowerManagerService extends IPowerManager.Stub 
                long timeSinceLastEvent = milliseconds - mLastProximityEventTime;

                mLastProximityEventTime = milliseconds;

                mHandler.removeCallbacks(mProximityTask);

                boolean proximityTaskQueued = false;



                // compare against getMaximumRange to support sensors that only return 0 or 1

                boolean active = (distance >= 0.0 && distance < PROXIMITY_THRESHOLD &&
@@ -2490,11 +2509,21 @@ class PowerManagerService extends IPowerManager.Stub 
                    // enforce delaying atleast PROXIMITY_SENSOR_DELAY before processing

                    mProximityPendingValue = (active ? 1 : 0);

                    mHandler.postDelayed(mProximityTask, PROXIMITY_SENSOR_DELAY - timeSinceLastEvent);

                    proximityTaskQueued = true;

                } else {

                    // process the value immediately

                    mProximityPendingValue = -1;

                    proximityChangedLocked(active);

                }



                // update mProximityPartialLock state

                boolean held = mProximityPartialLock.isHeld();

                if (!held && proximityTaskQueued) {

                    // hold wakelock until mProximityTask runs

                    mProximityPartialLock.acquire();

                } else if (held && !proximityTaskQueued) {

                    mProximityPartialLock.release();

                }

            }

        }