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Merge "Remove DictionaryUpdateController."

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This commit is contained in:
Keisuke Kuroyanagi 2014-04-28 08:29:02 +00:00 committed by Android (Google) Code Review
commit 5c1416e426
3 changed files with 21 additions and 107 deletions
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6
java/src/com/android/inputmethod/latin/ContactsBinaryDictionary.java
View file

@ -89,8 +89,8 @@ public class ContactsBinaryDictionary extends ExpandableBinaryDictionary {
registerObserver(context);
// Load the current binary dictionary from internal storage. If no binary dictionary exists,
// loadDictionary will start a new thread to generate one asynchronously.
loadDictionary();
// reloadDictionaryIfRequired will start a new thread to generate one asynchronously.
reloadDictionaryIfRequired();
}
private synchronized void registerObserver(final Context context) {
@ -100,7 +100,7 @@ public class ContactsBinaryDictionary extends ExpandableBinaryDictionary {
new ContentObserver(null) {
@Override
public void onChange(boolean self) {
setRequiresReload(true);
setNeedsToReload();
}
});
}

118
java/src/com/android/inputmethod/latin/ExpandableBinaryDictionary.java
View file

@ -27,7 +27,6 @@ import com.android.inputmethod.latin.makedict.UnsupportedFormatException;
import com.android.inputmethod.latin.makedict.WordProperty;
import com.android.inputmethod.latin.SuggestedWords.SuggestedWordInfo;
import com.android.inputmethod.latin.utils.AsyncResultHolder;
import com.android.inputmethod.latin.utils.CollectionUtils;
import com.android.inputmethod.latin.utils.CombinedFormatUtils;
import com.android.inputmethod.latin.utils.ExecutorUtils;
import com.android.inputmethod.latin.utils.FileUtils;
@ -38,7 +37,6 @@ import java.util.ArrayList;
import java.util.HashMap;
import java.util.Locale;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.atomic.AtomicBoolean;
@ -74,15 +72,6 @@ abstract public class ExpandableBinaryDictionary extends Dictionary {
private static final int DICTIONARY_FORMAT_VERSION = FormatSpec.VERSION4;
/**
* A static map of update controllers, each of which records the time of accesses to a single
* binary dictionary file and tracks whether the file is regenerating. The key for this map is
* the dictionary name and the value is the shared dictionary time recorder associated with
* that dictionary name.
*/
private static final ConcurrentHashMap<String, DictionaryUpdateController>
sDictNameDictionaryUpdateControllerMap = CollectionUtils.newConcurrentHashMap();
/** The application context. */
protected final Context mContext;
@ -105,14 +94,9 @@ abstract public class ExpandableBinaryDictionary extends Dictionary {
/** Dictionary file */
private final File mDictFile;
// TODO: remove, once dynamic operations is serialized
/** Controls updating the shared binary dictionary file across multiple instances. */
private final DictionaryUpdateController mDictNameDictionaryUpdateController;
private final AtomicBoolean mProcessingLargeTask;
private boolean mNeedsToReload;
// TODO: remove, once dynamic operations is serialized
/** Controls updating the local binary dictionary for this instance. */
private final DictionaryUpdateController mPerInstanceDictionaryUpdateController =
new DictionaryUpdateController();
/* A extension for a binary dictionary file. */
protected static final String DICT_FILE_EXTENSION = ".dict";
@ -145,21 +129,6 @@ abstract public class ExpandableBinaryDictionary extends Dictionary {
return mBinaryDictionary.isValidDictionary();
}
/**
* Gets the dictionary update controller for the given dictionary name.
*/
private static DictionaryUpdateController getDictionaryUpdateController(
final String dictName) {
DictionaryUpdateController recorder = sDictNameDictionaryUpdateControllerMap.get(dictName);
if (recorder == null) {
synchronized(sDictNameDictionaryUpdateControllerMap) {
recorder = new DictionaryUpdateController();
sDictNameDictionaryUpdateControllerMap.put(dictName, recorder);
}
}
return recorder;
}
/**
* Creates a new expandable binary dictionary.
*
@ -179,7 +148,8 @@ abstract public class ExpandableBinaryDictionary extends Dictionary {
mLocale = locale;
mDictFile = getDictFile(context, dictName, dictFile);
mBinaryDictionary = null;
mDictNameDictionaryUpdateController = getDictionaryUpdateController(dictName);
mProcessingLargeTask = new AtomicBoolean();
mNeedsToReload = false;
}
public static File getDictFile(final Context context, final String dictName,
@ -286,7 +256,7 @@ abstract public class ExpandableBinaryDictionary extends Dictionary {
try {
mBinaryDictionary.flushWithGC();
} finally {
mDictNameDictionaryUpdateController.mProcessingLargeTask.set(false);
mProcessingLargeTask.set(false);
}
}
});
@ -388,7 +358,7 @@ abstract public class ExpandableBinaryDictionary extends Dictionary {
callback.onFinished();
}
if (locked) {
mDictNameDictionaryUpdateController.mProcessingLargeTask.set(false);
mProcessingLargeTask.set(false);
}
}
}
@ -461,25 +431,11 @@ abstract public class ExpandableBinaryDictionary extends Dictionary {
return mBinaryDictionary.isValidBigram(word1, word2);
}
/**
* Load the current binary dictionary from internal storage in a background thread. If no binary
* dictionary exists, this method will generate one.
*/
protected void loadDictionary() {
mPerInstanceDictionaryUpdateController.mLastUpdateRequestTime = System.currentTimeMillis();
reloadDictionaryIfRequired();
}
/**
* Loads the current binary dictionary from internal storage. Assumes the dictionary file
* exists.
*/
private void loadBinaryDictionaryLocked() {
if (DEBUG) {
Log.d(TAG, "Loading binary dictionary: " + mDictName + " request="
+ mDictNameDictionaryUpdateController.mLastUpdateRequestTime + " update="
+ mDictNameDictionaryUpdateController.mLastUpdateTime);
}
if (DBG_STRESS_TEST) {
// Test if this class does not cause problems when it takes long time to load binary
// dictionary.
@ -505,11 +461,6 @@ abstract public class ExpandableBinaryDictionary extends Dictionary {
* Create a new binary dictionary and load initial contents.
*/
private void createNewDictionaryLocked() {
if (DEBUG) {
Log.d(TAG, "Generating binary dictionary: " + mDictName + " request="
+ mDictNameDictionaryUpdateController.mLastUpdateRequestTime + " update="
+ mDictNameDictionaryUpdateController.mLastUpdateTime);
}
removeBinaryDictionaryLocked();
createOnMemoryBinaryDictionaryLocked();
loadInitialContentsLocked();
@ -529,20 +480,11 @@ abstract public class ExpandableBinaryDictionary extends Dictionary {
}
/**
* Marks that the dictionary is out of date and requires a reload.
* Marks that the dictionary needs to be reloaded.
*
* @param requiresRebuild Indicates that the source dictionary content has changed and a rebuild
* of the binary file is required. If not true, the next reload process will only read
* the current binary dictionary from file.
*/
protected void setRequiresReload(final boolean requiresRebuild) {
final long time = System.currentTimeMillis();
mPerInstanceDictionaryUpdateController.mLastUpdateRequestTime = time;
mDictNameDictionaryUpdateController.mLastUpdateRequestTime = time;
if (DEBUG) {
Log.d(TAG, "Reload request: " + mDictName + ": request=" + time + " update="
+ mDictNameDictionaryUpdateController.mLastUpdateTime);
}
protected void setNeedsToReload() {
mNeedsToReload = true;
}
/**
@ -559,18 +501,17 @@ abstract public class ExpandableBinaryDictionary extends Dictionary {
* Returns whether a dictionary reload is required.
*/
private boolean isReloadRequired() {
return mBinaryDictionary == null || mPerInstanceDictionaryUpdateController.isOutOfDate();
return mBinaryDictionary == null || mNeedsToReload;
}
private boolean processingLargeTask() {
return mDictNameDictionaryUpdateController.mProcessingLargeTask.get();
return mProcessingLargeTask.get();
}
// Returns whether the dictionary is being used for a large task. If true, we should not use
// this dictionary for latency sensitive operations.
private boolean setProcessingLargeTaskIfNot() {
return mDictNameDictionaryUpdateController.mProcessingLargeTask.compareAndSet(
false /* expect */ , true /* update */);
return mProcessingLargeTask.compareAndSet(false /* expect */ , true /* update */);
}
/**
@ -584,28 +525,17 @@ abstract public class ExpandableBinaryDictionary extends Dictionary {
@Override
public void run() {
try {
final long time = System.currentTimeMillis();
final boolean openedDictIsOutOfDate =
mDictNameDictionaryUpdateController.isOutOfDate();
if (!dictionaryFileExists()
|| (openedDictIsOutOfDate && haveContentsChanged())) {
if (!dictionaryFileExists() || haveContentsChanged()) {
// If the shared dictionary file does not exist or is out of date and
// contents have been updated, the first instance that acquires the lock
// will generate a new one
mDictNameDictionaryUpdateController.mLastUpdateTime = time;
createNewDictionaryLocked();
} else if (openedDictIsOutOfDate) {
// If not, the reload request was unnecessary so revert
// LastUpdateRequestTime to LastUpdateTime.
mDictNameDictionaryUpdateController.mLastUpdateRequestTime =
mDictNameDictionaryUpdateController.mLastUpdateTime;
} else if (mBinaryDictionary == null ||
mPerInstanceDictionaryUpdateController.mLastUpdateTime
< mDictNameDictionaryUpdateController.mLastUpdateTime) {
} else if (mBinaryDictionary == null) {
// Otherwise, if the local dictionary is older than the shared dictionary,
// load the shared dictionary.
loadBinaryDictionaryLocked();
}
mNeedsToReload = false;
if (mBinaryDictionary != null && !(isValidDictionaryLocked()
// TODO: remove the check below
&& matchesExpectedBinaryDictFormatVersionForThisType(
@ -613,12 +543,10 @@ abstract public class ExpandableBinaryDictionary extends Dictionary {
// Binary dictionary or its format version is not valid. Regenerate
// the dictionary file. writeBinaryDictionary will remove the
// existing files if appropriate.
mDictNameDictionaryUpdateController.mLastUpdateTime = time;
createNewDictionaryLocked();
}
mPerInstanceDictionaryUpdateController.mLastUpdateTime = time;
} finally {
mDictNameDictionaryUpdateController.mProcessingLargeTask.set(false);
mProcessingLargeTask.set(false);
}
}
});
@ -643,20 +571,6 @@ abstract public class ExpandableBinaryDictionary extends Dictionary {
ExecutorUtils.getExecutor(mDictName).replaceAndExecute(oldTask, newTask);
}
/**
* For tracking whether the dictionary is out of date and the dictionary is used in a large
* task. Can be shared across multiple dictionary instances that access the same filename.
*/
private static class DictionaryUpdateController {
public volatile long mLastUpdateTime = 0;
public volatile long mLastUpdateRequestTime = 0;
public volatile AtomicBoolean mProcessingLargeTask = new AtomicBoolean();
public boolean isOutOfDate() {
return (mLastUpdateRequestTime > mLastUpdateTime);
}
}
// TODO: Implement BinaryDictionary.isInDictionary().
@UsedForTesting
public boolean isInUnderlyingBinaryDictionaryForTests(final String word) {

4
java/src/com/android/inputmethod/latin/UserBinaryDictionary.java
View file

@ -116,12 +116,12 @@ public class UserBinaryDictionary extends ExpandableBinaryDictionary {
// devices. On older versions of the platform, the hook above will be called instead.
@Override
public void onChange(final boolean self, final Uri uri) {
setRequiresReload(true);
setNeedsToReload();
}
};
cres.registerContentObserver(Words.CONTENT_URI, true, mObserver);
mEnabled = readIsEnabled();
loadDictionary();
reloadDictionaryIfRequired();
}
@Override