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am c2f2d0d2: Merge "Limit the number of waiting UpdateBinaryTask to at most 1."

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* commit 'c2f2d0d211fe4c765cda7a770004d061ff2b7711':
  Limit the number of waiting UpdateBinaryTask to at most 1.
This commit is contained in:
Ken Wakasa 2013-08-16 05:02:36 -07:00 committed by Android Git Automerger
commit f404756b17
3 changed files with 62 additions and 50 deletions
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14
java/src/com/android/inputmethod/latin/personalization/DynamicPredictionDictionaryBase.java
View file

@ -43,6 +43,7 @@ import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.ArrayList;
import java.util.concurrent.atomic.AtomicReference;
import java.util.concurrent.locks.ReentrantLock;
/**
@ -75,6 +76,8 @@ public abstract class DynamicPredictionDictionaryBase extends ExpandableDictiona
private final ArrayList<PersonalizationDictionaryUpdateSession> mSessions =
CollectionUtils.newArrayList();
private final AtomicReference<AsyncTask<Void, Void, Void>> mWaitingTask;
// Should always be false except when we use this class for test
@UsedForTesting boolean mIsTest = false;
@ -83,6 +86,7 @@ public abstract class DynamicPredictionDictionaryBase extends ExpandableDictiona
super(context, dictionaryType);
mLocale = locale;
mPrefs = sp;
mWaitingTask = new AtomicReference<AsyncTask<Void, Void, Void>>();
if (mLocale != null && mLocale.length() > 1) {
loadDictionary();
}
@ -174,7 +178,11 @@ public abstract class DynamicPredictionDictionaryBase extends ExpandableDictiona
*/
private void flushPendingWrites() {
// Create a background thread to write the pending entries
new UpdateBinaryTask(mBigramList, mLocale, this, mPrefs, getContext()).execute();
final AsyncTask<Void, Void, Void> old = mWaitingTask.getAndSet(new UpdateBinaryTask(
mBigramList, mLocale, this, mPrefs, getContext()).execute());
if (old != null) {
old.cancel(false);
}
}
@Override
@ -287,6 +295,7 @@ public abstract class DynamicPredictionDictionaryBase extends ExpandableDictiona
@Override
protected Void doInBackground(final Void... v) {
if (isCancelled()) return null;
if (mDynamicPredictionDictionary.mIsTest) {
// If mIsTest == true, wait until the lock is released.
mDynamicPredictionDictionary.mBigramListLock.lock();
@ -306,6 +315,9 @@ public abstract class DynamicPredictionDictionaryBase extends ExpandableDictiona
}
private void doWriteTaskLocked() {
if (isCancelled()) return;
mDynamicPredictionDictionary.mWaitingTask.compareAndSet(this, null);
if (DBG_STRESS_TEST) {
try {
Log.w(TAG, "Start stress in closing: " + mLocale);

3
java/src/com/android/inputmethod/latin/personalization/UserHistoryPredictionDictionary.java
View file

@ -26,7 +26,8 @@ import android.content.SharedPreferences;
* cancellation or manual picks. This allows the keyboard to adapt to the typist over time.
*/
public class UserHistoryPredictionDictionary extends DynamicPredictionDictionaryBase {
private static final String NAME = UserHistoryPredictionDictionary.class.getSimpleName();
/* package for tests */ static final String NAME =
UserHistoryPredictionDictionary.class.getSimpleName();
/* package */ UserHistoryPredictionDictionary(final Context context, final String locale,
final SharedPreferences sp) {
super(context, locale, sp, Dictionary.TYPE_USER_HISTORY);

95
tests/src/com/android/inputmethod/latin/personalization/UserHistoryDictionaryTests.java
View file

@ -29,6 +29,7 @@ import java.util.ArrayList;
import java.util.List;
import java.util.Random;
import java.util.Set;
import java.util.concurrent.TimeUnit;
/**
* Unit tests for UserHistoryDictionary
@ -43,6 +44,8 @@ public class UserHistoryDictionaryTests extends AndroidTestCase {
"n", "o", "p", "q", "r", "s", "t", "u", "v", "w", "x", "y", "z"
};
private static final int MIN_USER_HISTORY_DICTIONARY_FILE_SIZE = 1000;
@Override
public void setUp() {
mPrefs = PreferenceManager.getDefaultSharedPreferences(getContext());
@ -78,43 +81,42 @@ public class UserHistoryDictionaryTests extends AndroidTestCase {
}
}
private void addAndWriteRandomWords(final String locale, final int numberOfWords,
final Random random) {
final List<String> words = generateWords(numberOfWords, random);
final UserHistoryPredictionDictionary dict =
PersonalizationDictionaryHelper.getUserHistoryPredictionDictionary(getContext(),
locale, mPrefs);
// Add random words to the user history dictionary.
addToDict(dict, words);
// write to file.
dict.close();
}
public void testRandomWords() {
File dictFile = null;
Log.d(TAG, "This test can be used for profiling.");
Log.d(TAG, "Usage: please set UserHistoryDictionary.PROFILE_SAVE_RESTORE to true.");
final String locale = "testRandomWords" + System.currentTimeMillis();
final int numberOfWords = 1000;
final Random random = new Random(123456);
try {
Log.d(TAG, "This test can be used for profiling.");
Log.d(TAG, "Usage: please set UserHistoryDictionary.PROFILE_SAVE_RESTORE to true.");
final int numberOfWords = 1000;
final Random random = new Random(123456);
List<String> words = generateWords(numberOfWords, random);
final String locale = "testRandomWords";
final String fileName = "UserHistoryDictionary." + locale + ".dict";
dictFile = new File(getContext().getFilesDir(), fileName);
final UserHistoryPredictionDictionary dict =
PersonalizationDictionaryHelper.getUserHistoryPredictionDictionary(
getContext(), locale, mPrefs);
dict.mIsTest = true;
addToDict(dict, words);
try {
Log.d(TAG, "waiting for adding the word ...");
Thread.sleep(2000);
} catch (InterruptedException e) {
Log.d(TAG, "InterruptedException: " + e);
}
// write to file
dict.close();
addAndWriteRandomWords(locale, numberOfWords, random);
} finally {
try {
Log.d(TAG, "waiting for writing ...");
Thread.sleep(5000);
Thread.sleep(TimeUnit.MILLISECONDS.convert(5L, TimeUnit.SECONDS));
} catch (InterruptedException e) {
Log.d(TAG, "InterruptedException: " + e);
}
} finally {
final String fileName = UserHistoryPredictionDictionary.NAME + "." + locale + ".dict";
dictFile = new File(getContext().getFilesDir(), fileName);
if (dictFile != null) {
assertTrue(dictFile.exists());
assertTrue(dictFile.length() >= MIN_USER_HISTORY_DICTIONARY_FILE_SIZE);
dictFile.delete();
}
}
@ -122,49 +124,46 @@ public class UserHistoryDictionaryTests extends AndroidTestCase {
public void testStressTestForSwitchingLanguagesAndAddingWords() {
final int numberOfLanguages = 2;
final int numberOfLanguageSwitching = 100;
final int numberOfWordsIntertedForEachLanguageSwitch = 100;
final int numberOfLanguageSwitching = 80;
final int numberOfWordsInsertedForEachLanguageSwitch = 100;
final File dictFiles[] = new File[numberOfLanguages];
try {
final Random random = new Random(123456);
// Create locales for this test.
String locales[] = new String[numberOfLanguages];
// Create filename suffixes for this test.
String testFilenameSuffixes[] = new String[numberOfLanguages];
for (int i = 0; i < numberOfLanguages; i++) {
locales[i] = "testSwitchingLanguages" + i;
final String fileName = "UserHistoryDictionary." + locales[i] + ".dict";
testFilenameSuffixes[i] = "testSwitchingLanguages" + i;
final String fileName = "UserHistoryDictionary." + testFilenameSuffixes[i]
+ ".dict";
dictFiles[i] = new File(getContext().getFilesDir(), fileName);
}
final long now = System.currentTimeMillis();
final long start = System.currentTimeMillis();
for (int i = 0; i < numberOfLanguageSwitching; i++) {
final int index = i % numberOfLanguages;
// Switch languages to locales[index].
final UserHistoryPredictionDictionary dict =
PersonalizationDictionaryHelper.getUserHistoryPredictionDictionary(
getContext(), locales[index], mPrefs);
final List<String> words = generateWords(
numberOfWordsIntertedForEachLanguageSwitch, random);
// Add random words to the user history dictionary.
addToDict(dict, words);
// write to file
dict.close();
// Switch languages to testFilenameSuffixes[index].
addAndWriteRandomWords(testFilenameSuffixes[index],
numberOfWordsInsertedForEachLanguageSwitch, random);
}
final long end = System.currentTimeMillis();
Log.d(TAG, "testStressTestForSwitchingLanguageAndAddingWords took "
+ (end - now) + " ms");
+ (end - start) + " ms");
} finally {
Log.d(TAG, "waiting for writing ...");
try {
Log.d(TAG, "waiting for writing ...");
Thread.sleep(5000);
Thread.sleep(TimeUnit.MILLISECONDS.convert(5L, TimeUnit.SECONDS));
} catch (InterruptedException e) {
Log.d(TAG, "InterruptedException: " + e);
}
} finally {
for (final File file : dictFiles) {
if (file != null) {
assertTrue(file.exists());
assertTrue(file.length() >= MIN_USER_HISTORY_DICTIONARY_FILE_SIZE);
file.delete();
}
}