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Commit db772d81 authored by Mathias Agopian's avatar Mathias Agopian
Browse files

rework SystemSensorManager.java 

- it doesn't need a dedicated thread to pull events out
- events are now sent directly to the proper looper by
  the sensorservice

this simplifies things a lot.

Change-Id: Ifa32fed3eff9007a2ee03aaaa837412cb4c15e52
parent 58395e71

core/java/android/hardware/SensorManager.java

+0 −52
Original line number Diff line number Diff line
@@ -1314,56 +1314,4 @@ public abstract class SensorManager { 
            return mLegacySensorManager;

        }

    }



    /**

     * Sensor event pool implementation.

     * @hide

     */

    protected static final class SensorEventPool {

        private final int mPoolSize;

        private final SensorEvent mPool[];

        private int mNumItemsInPool;



        private SensorEvent createSensorEvent() {

            // maximal size for all legacy events is 3

            return new SensorEvent(3);

        }



        SensorEventPool(int poolSize) {

            mPoolSize = poolSize;

            mNumItemsInPool = poolSize;

            mPool = new SensorEvent[poolSize];

        }



        SensorEvent getFromPool() {

            SensorEvent t = null;

            synchronized (this) {

                if (mNumItemsInPool > 0) {

                    // remove the "top" item from the pool

                    final int index = mPoolSize - mNumItemsInPool;

                    t = mPool[index];

                    mPool[index] = null;

                    mNumItemsInPool--;

                }

            }

            if (t == null) {

                // the pool was empty or this item was removed from the pool for

                // the first time. In any case, we need to create a new item.

                t = createSensorEvent();

            }

            return t;

        }



        void returnToPool(SensorEvent t) {

            synchronized (this) {

                // is there space left in the pool?

                if (mNumItemsInPool < mPoolSize) {

                    // if so, return the item to the pool

                    mNumItemsInPool++;

                    final int index = mPoolSize - mNumItemsInPool;

                    mPool[index] = t;

                }

            }

        }

    }

}