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Commit 39d71497 authored by lijilou's avatar lijilou Committed by Jilou li
Browse files

WatchableImpl: add lock when get the mObservers size. 

Bug: none
Flag: EXEMPT minor optimization
Change-Id: If22e5f15bd97e2523252268824f977dc472e6b1f
parent dc67a341

services/core/java/com/android/server/utils/WatchableImpl.java

+4 −1
Original line number Original line Diff line number Diff line
@@ -33,6 +33,7 @@ public class WatchableImpl implements Watchable { 
    /**

    /**

     * The list of observers.

     * The list of observers.

     */

     */

    @GuardedBy("mObservers")

    protected final ArrayList<Watcher> mObservers = new ArrayList<>();

    protected final ArrayList<Watcher> mObservers = new ArrayList<>();





    /**

    /**
@@ -83,8 +84,10 @@ public class WatchableImpl implements Watchable { 
     * @return The number of registered observers.

     * @return The number of registered observers.

     */

     */

    public int registeredObserverCount() {

    public int registeredObserverCount() {

        synchronized (mObservers) {

            return mObservers.size();

            return mObservers.size();

        }

        }

    }





    /**

    /**

     * Invokes {@link Watcher#onChange} on each observer.

     * Invokes {@link Watcher#onChange} on each observer.