Log interrupted tasks in AOSP.

Bug 19987461.

Change-Id: Ia2714f555146f8f31a6d8c61f555d2b6fecdab7d

java/src/com/android/inputmethod/latin/ExpandableBinaryDictionary.java

@@ -650,7 +650,8 @@ abstract public class ExpandableBinaryDictionary extends Dictionary {
         reloadDictionaryIfRequired();
         final String dictName = mDictName;
         final File dictFile = mDictFile;
-        final AsyncResultHolder<DictionaryStats> result = new AsyncResultHolder<>();
+        final AsyncResultHolder<DictionaryStats> result =
+                new AsyncResultHolder<>("DictionaryStats");
         asyncExecuteTaskWithLock(mLock.readLock(), new Runnable() {
             @Override
             public void run() {
@@ -724,7 +725,8 @@ abstract public class ExpandableBinaryDictionary extends Dictionary {
      */
     public WordProperty[] getWordPropertiesForSyncing() {
         reloadDictionaryIfRequired();
-        final AsyncResultHolder<WordProperty[]> result = new AsyncResultHolder<>();
+        final AsyncResultHolder<WordProperty[]> result =
+                new AsyncResultHolder<>("WordPropertiesForSync");
         asyncExecuteTaskWithLock(mLock.readLock(), new Runnable() {
             @Override
             public void run() {

java/src/com/android/inputmethod/latin/inputlogic/InputLogic.java

@@ -1407,7 +1407,7 @@ public final class InputLogic {
             return;
         }
 
-        final AsyncResultHolder<SuggestedWords> holder = new AsyncResultHolder<>();
+        final AsyncResultHolder<SuggestedWords> holder = new AsyncResultHolder<>("Suggest");
         mInputLogicHandler.getSuggestedWords(inputStyle, SuggestedWords.NOT_A_SEQUENCE_NUMBER,
                 new OnGetSuggestedWordsCallback() {
                     @Override

java/src/com/android/inputmethod/latin/settings/SettingsValues.java

@@ -209,7 +209,7 @@ public class SettingsValues {
                 prefs, DebugSettings.PREF_KEY_PREVIEW_DISMISS_END_Y_SCALE,
                 defaultKeyPreviewDismissEndScale);
         mDisplayOrientation = res.getConfiguration().orientation;
-        mAppWorkarounds = new AsyncResultHolder<>();
+        mAppWorkarounds = new AsyncResultHolder<>("AppWorkarounds");
         final PackageInfo packageInfo = TargetPackageInfoGetterTask.getCachedPackageInfo(
                 mInputAttributes.mTargetApplicationPackageName);
         if (null != packageInfo) {

java/src/com/android/inputmethod/latin/utils/AsyncResultHolder.java

@@ -16,6 +16,8 @@
 
 package com.android.inputmethod.latin.utils;
 
+import android.util.Log;
+
 import java.util.concurrent.CountDownLatch;
 import java.util.concurrent.TimeUnit;
 
@@ -29,9 +31,11 @@ public class AsyncResultHolder<E> {
     private final Object mLock = new Object();
 
     private E mResult;
+    private final String mTag;
     private final CountDownLatch mLatch;
 
-    public AsyncResultHolder() {
+    public AsyncResultHolder(final String tag) {
+        mTag = tag;
         mLatch = new CountDownLatch(1);
     }
 
@@ -61,6 +65,7 @@ public class AsyncResultHolder<E> {
         try {
             return mLatch.await(timeOut, TimeUnit.MILLISECONDS) ? mResult : defaultValue;
         } catch (InterruptedException e) {
+            Log.w(mTag, "get() : Interrupted after " + timeOut + " ms");
             return defaultValue;
         }
     }

tests/src/com/android/inputmethod/latin/utils/AsyncResultHolderTests.java

@@ -45,27 +45,27 @@ public class AsyncResultHolderTests extends AndroidTestCase {
     }
 
     public void testGetWithoutSet() {
-        final AsyncResultHolder<Integer> holder = new AsyncResultHolder<>();
+        final AsyncResultHolder<Integer> holder = new AsyncResultHolder<>("Test");
         final int resultValue = holder.get(DEFAULT_VALUE, TIMEOUT_IN_MILLISECONDS);
         assertEquals(DEFAULT_VALUE, resultValue);
     }
 
     public void testGetBeforeSet() {
-        final AsyncResultHolder<Integer> holder = new AsyncResultHolder<>();
+        final AsyncResultHolder<Integer> holder = new AsyncResultHolder<>("Test");
         setAfterGivenTime(holder, SET_VALUE, TIMEOUT_IN_MILLISECONDS + MARGIN_IN_MILLISECONDS);
         final int resultValue = holder.get(DEFAULT_VALUE, TIMEOUT_IN_MILLISECONDS);
         assertEquals(DEFAULT_VALUE, resultValue);
     }
 
     public void testGetAfterSet() {
-        final AsyncResultHolder<Integer> holder = new AsyncResultHolder<>();
+        final AsyncResultHolder<Integer> holder = new AsyncResultHolder<>("Test");
         holder.set(SET_VALUE);
         final int resultValue = holder.get(DEFAULT_VALUE, TIMEOUT_IN_MILLISECONDS);
         assertEquals(SET_VALUE, resultValue);
     }
 
     public void testGetBeforeTimeout() {
-        final AsyncResultHolder<Integer> holder = new AsyncResultHolder<>();
+        final AsyncResultHolder<Integer> holder = new AsyncResultHolder<>("Test");
         setAfterGivenTime(holder, SET_VALUE, TIMEOUT_IN_MILLISECONDS - MARGIN_IN_MILLISECONDS);
         final int resultValue = holder.get(DEFAULT_VALUE, TIMEOUT_IN_MILLISECONDS);
         assertEquals(SET_VALUE, resultValue);