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Fix performance issue when there are no contacts in the dictionary dictionary.

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Bug: 6551480
Change-Id: I8681a1bd82423c612af2d012f9b872501d8c201d
This commit is contained in:
Tom Ouyang 2012-05-25 11:16:30 -07:00 committed by Android (Google) Code Review
parent 961e676b9a
commit 1ed017ef0e
2 changed files with 34 additions and 12 deletions
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4
java/src/com/android/inputmethod/latin/ContactsBinaryDictionary.java
View file

@ -214,6 +214,10 @@ public class ContactsBinaryDictionary extends ExpandableBinaryDictionary {
return false;
}
if (contactCount != sContactCountAtLastRebuild) {
if (DEBUG) {
Log.d(TAG, "Contact count changed: " + sContactCountAtLastRebuild + " to "
+ contactCount);
}
return true;
}
// Check all contacts since it's not possible to find out which names have changed.

42
java/src/com/android/inputmethod/latin/ExpandableBinaryDictionary.java
View file

@ -294,7 +294,7 @@ abstract public class ExpandableBinaryDictionary extends Dictionary {
*/
protected void loadBinaryDictionary() {
if (DEBUG) {
Log.d(TAG, "Loading binary dictionary: request="
Log.d(TAG, "Loading binary dictionary: " + mFilename + " request="
+ mSharedDictionaryController.mLastUpdateRequestTime + " update="
+ mSharedDictionaryController.mLastUpdateTime);
}
@ -326,7 +326,7 @@ abstract public class ExpandableBinaryDictionary extends Dictionary {
*/
private void generateBinaryDictionary() {
if (DEBUG) {
Log.d(TAG, "Generating binary dictionary: request="
Log.d(TAG, "Generating binary dictionary: " + mFilename + " request="
+ mSharedDictionaryController.mLastUpdateRequestTime + " update="
+ mSharedDictionaryController.mLastUpdateTime);
}
@ -371,7 +371,7 @@ abstract public class ExpandableBinaryDictionary extends Dictionary {
mLocalDictionaryController.mLastUpdateRequestTime = time;
mSharedDictionaryController.mLastUpdateRequestTime = time;
if (DEBUG) {
Log.d(TAG, "Reload request: request=" + time + " update="
Log.d(TAG, "Reload request: " + mFilename + ": request=" + time + " update="
+ mSharedDictionaryController.mLastUpdateTime);
}
}
@ -380,28 +380,46 @@ abstract public class ExpandableBinaryDictionary extends Dictionary {
* Reloads the dictionary if required. Reload will occur asynchronously in a separate thread.
*/
void asyncReloadDictionaryIfRequired() {
if (!isReloadRequired()) return;
if (DEBUG) {
Log.d(TAG, "Starting AsyncReloadDictionaryTask: " + mFilename);
}
new AsyncReloadDictionaryTask().start();
}
/**
* Reloads the dictionary if required. Access is controlled on a per dictionary file basis and
* supports concurrent calls from multiple instances that share the same dictionary file.
* Reloads the dictionary if required.
*/
protected final void syncReloadDictionaryIfRequired() {
if (mBinaryDictionary != null && !mLocalDictionaryController.isOutOfDate()) {
return;
}
if (!isReloadRequired()) return;
syncReloadDictionaryInternal();
}
/**
* Returns whether a dictionary reload is required.
*/
private boolean isReloadRequired() {
return mBinaryDictionary == null || mLocalDictionaryController.isOutOfDate();
}
/**
* Reloads the dictionary. Access is controlled on a per dictionary file basis and supports
* concurrent calls from multiple instances that share the same dictionary file.
*/
private final void syncReloadDictionaryInternal() {
// Ensure that only one thread attempts to read or write to the shared binary dictionary
// file at the same time.
mSharedDictionaryController.lock();
try {
final long time = SystemClock.uptimeMillis();
if (mSharedDictionaryController.isOutOfDate() || !dictionaryFileExists()) {
final boolean dictionaryFileExists = dictionaryFileExists();
if (mSharedDictionaryController.isOutOfDate() || !dictionaryFileExists) {
// If the shared dictionary file does not exist or is out of date, the first
// instance that acquires the lock will generate a new one.
if (hasContentChanged()) {
// If the source content has changed, rebuild the binary dictionary.
if (hasContentChanged() || !dictionaryFileExists) {
// If the source content has changed or the dictionary does not exist, rebuild
// the binary dictionary. Empty dictionaries are supported (in the case where
// loadDictionaryAsync() adds nothing) in order to provide a uniform framework.
mSharedDictionaryController.mLastUpdateTime = time;
generateBinaryDictionary();
loadBinaryDictionary();
@ -435,7 +453,7 @@ abstract public class ExpandableBinaryDictionary extends Dictionary {
private class AsyncReloadDictionaryTask extends Thread {
@Override
public void run() {
syncReloadDictionaryIfRequired();
syncReloadDictionaryInternal();
}
}