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am 56f35a10: Merge "Fix bug in counting words between samples"

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* commit '56f35a10cde1beeea51d99427992d832fa2de2bb':
  Fix bug in counting words between samples
This commit is contained in:
Kurt Partridge 2013-04-17 21:25:27 -07:00 committed by Android Git Automerger
commit 8acab80a86
2 changed files with 23 additions and 20 deletions
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26
java/src/com/android/inputmethod/research/FixedLogBuffer.java
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@ -51,10 +51,6 @@ public class FixedLogBuffer extends LogBuffer {
mNumActualWords = 0;
}
protected int getNumActualWords() {
return mNumActualWords;
}
/**
* Adds a new LogUnit to the front of the LIFO queue, evicting existing LogUnit's
* (oldest first) if word capacity is reached.
@ -119,12 +115,24 @@ public class FixedLogBuffer extends LogBuffer {
return logUnit;
}
protected void shiftOutWords(final int numWords) {
final int targetNumWords = mNumActualWords - numWords;
final LinkedList<LogUnit> logUnits = getLogUnits();
while (mNumActualWords > targetNumWords && !logUnits.isEmpty()) {
shiftOut();
/**
* Remove LogUnits from the front of the LogBuffer until {@code numWords} have been removed.
*
* If there are less than {@code numWords} word-containing {@link LogUnit}s, shifts out
* all {@code LogUnit}s in the buffer.
*
* @param numWords the number of word-containing {@link LogUnit}s to shift out
* @return the number of actual {@code LogUnit}s shifted out
*/
protected int shiftOutWords(final int numWords) {
int numWordContainingLogUnitsShiftedOut = 0;
for (LogUnit logUnit = shiftOut(); logUnit != null
&& numWordContainingLogUnitsShiftedOut < numWords; logUnit = shiftOut()) {
if (logUnit.hasWord()) {
numWordContainingLogUnitsShiftedOut++;
}
}
return numWordContainingLogUnitsShiftedOut;
}
public void shiftOutAll() {

17
java/src/com/android/inputmethod/research/MainLogBuffer.java
View File

@ -25,7 +25,6 @@ import com.android.inputmethod.latin.define.ProductionFlag;
import java.util.ArrayList;
import java.util.LinkedList;
import java.util.Random;
/**
* MainLogBuffer is a FixedLogBuffer that tracks the state of LogUnits to make privacy guarantees.
@ -100,10 +99,6 @@ public abstract class MainLogBuffer extends FixedLogBuffer {
return mSuggest.getMainDictionary();
}
public void resetWordCounter() {
mNumWordsUntilSafeToSample = mNumWordsBetweenNGrams;
}
public void setIsStopping() {
mIsStopping = true;
}
@ -201,7 +196,7 @@ public abstract class MainLogBuffer extends FixedLogBuffer {
// Good n-gram at the front of the buffer. Publish it, disclosing details.
publish(logUnits, true /* canIncludePrivateData */);
shiftOutWords(N_GRAM_SIZE);
resetWordCounter();
mNumWordsUntilSafeToSample = mNumWordsBetweenNGrams;
} else {
// No good n-gram at front, and buffer is full. Shift out the first word (or if there
// is none, the existing logUnits).
@ -224,13 +219,13 @@ public abstract class MainLogBuffer extends FixedLogBuffer {
final boolean canIncludePrivateData);
@Override
protected void shiftOutWords(final int numWords) {
final int oldNumActualWords = getNumActualWords();
super.shiftOutWords(numWords);
final int numWordsShifted = oldNumActualWords - getNumActualWords();
mNumWordsUntilSafeToSample -= numWordsShifted;
protected int shiftOutWords(final int numWords) {
final int numWordContainingLogUnitsShiftedOut = super.shiftOutWords(numWords);
mNumWordsUntilSafeToSample = Math.max(0, mNumWordsUntilSafeToSample
- numWordContainingLogUnitsShiftedOut);
if (DEBUG) {
Log.d(TAG, "wordsUntilSafeToSample now at " + mNumWordsUntilSafeToSample);
}
return numWordContainingLogUnitsShiftedOut;
}
}