Examples with SoftReference java.lang.ref.SoftReference used on opensource projects

Example 26 with SoftReference

use of java.lang.ref.SoftReference in project jdk8u_jdk by JetBrains.

the class StandardGlyphVector method getDefaultStrike.

// encapsulate access to cached default glyph strike
private GlyphStrike getDefaultStrike() {
    GlyphStrike gs = null;
    if (fsref != null) {
        gs = (GlyphStrike) fsref.get();
    }
    if (gs == null) {
        gs = GlyphStrike.create(this, dtx, null);
        fsref = new SoftReference(gs);
    }
    return gs;
}

Example 27 with SoftReference

use of java.lang.ref.SoftReference in project jdk8u_jdk by JetBrains.

the class SunLayoutEngine method getEngine.

// !!! don't need this unless we have more than one sun layout engine...
public LayoutEngine getEngine(LayoutEngineKey key) {
    ConcurrentHashMap cache = (ConcurrentHashMap) cacheref.get();
    if (cache == null) {
        cache = new ConcurrentHashMap();
        cacheref = new SoftReference(cache);
    }
    LayoutEngine e = (LayoutEngine) cache.get(key);
    if (e == null) {
        LayoutEngineKey copy = key.copy();
        e = new SunLayoutEngine(copy);
        cache.put(copy, e);
    }
    return e;
}

Example 28 with SoftReference

use of java.lang.ref.SoftReference in project jdk8u_jdk by JetBrains.

the class Collator method getInstance.

/**
     * Gets the Collator for the desired locale.
     * @param desiredLocale the desired locale.
     * @return the Collator for the desired locale.
     * @see java.util.Locale
     * @see java.util.ResourceBundle
     */
public static Collator getInstance(Locale desiredLocale) {
    SoftReference<Collator> ref = cache.get(desiredLocale);
    Collator result = (ref != null) ? ref.get() : null;
    if (result == null) {
        LocaleProviderAdapter adapter;
        adapter = LocaleProviderAdapter.getAdapter(CollatorProvider.class, desiredLocale);
        CollatorProvider provider = adapter.getCollatorProvider();
        result = provider.getInstance(desiredLocale);
        if (result == null) {
            result = LocaleProviderAdapter.forJRE().getCollatorProvider().getInstance(desiredLocale);
        }
        while (true) {
            if (ref != null) {
                // Remove the empty SoftReference if any
                cache.remove(desiredLocale, ref);
            }
            ref = cache.putIfAbsent(desiredLocale, new SoftReference<>(result));
            if (ref == null) {
                break;
            }
            Collator cachedColl = ref.get();
            if (cachedColl != null) {
                result = cachedColl;
                break;
            }
        }
    }
    // make the world safe
    return (Collator) result.clone();
}

Example 29 with SoftReference

use of java.lang.ref.SoftReference in project AndroidDynamicLoader by mmin18.

the class ImageCache method getBitmapFromReusableSet.

/**
 * @param options - BitmapFactory.Options with out* options populated
 * @return Bitmap that case be used for inBitmap
 */
protected Bitmap getBitmapFromReusableSet(BitmapFactory.Options options) {
    Bitmap bitmap = null;
    if (mReusableBitmaps != null && !mReusableBitmaps.isEmpty()) {
        final Iterator<SoftReference<Bitmap>> iterator = mReusableBitmaps.iterator();
        Bitmap item;
        while (iterator.hasNext()) {
            item = iterator.next().get();
            if (null != item && item.isMutable()) {
                // Check to see it the item can be used for inBitmap
                if (canUseForInBitmap(item, options)) {
                    bitmap = item;
                    // Remove from reusable set so it can't be used again
                    iterator.remove();
                    break;
                }
            } else {
                // Remove from the set if the reference has been cleared.
                iterator.remove();
            }
        }
    }
    return bitmap;
}

Example 30 with SoftReference

use of java.lang.ref.SoftReference in project knime-core by knime.

the class JoinerNodeModel method execute.

/**
 * {@inheritDoc}
 */
@Override
protected BufferedDataTable[] execute(final BufferedDataTable[] inData, final ExecutionContext exec) throws Exception {
    BufferedDataContainer dc = exec.createDataContainer(JoinedTable.createSpec(inData[0].getDataTableSpec(), inData[1].getDataTableSpec(), m_method, m_suffix));
    DataTable leftTable = inData[0];
    DataTable rightTable = inData[1];
    // in the output
    if (JoinedTable.METHOD_FILTER.equals(m_method)) {
        DataTableSpec leftTableSpec = leftTable.getDataTableSpec();
        DataTableSpec rightTableSpec = rightTable.getDataTableSpec();
        LinkedHashSet<String> leftHash = new LinkedHashSet<String>();
        for (DataColumnSpec c : leftTableSpec) {
            leftHash.add(c.getName());
        }
        LinkedHashSet<String> rightHash = new LinkedHashSet<String>();
        for (DataColumnSpec c : rightTableSpec) {
            rightHash.add(c.getName());
        }
        rightHash.removeAll(leftHash);
        String[] survivors = rightHash.toArray(new String[rightHash.size()]);
        if (survivors.length < rightTableSpec.getNumColumns()) {
            rightTable = new FilterColumnTable(rightTable, survivors);
        }
    }
    final BitSet rightRows = new BitSet(inData[1].getRowCount());
    final LinkedHashMap<RowKey, SoftReference<Helper>> map = new LinkedHashMap<RowKey, SoftReference<Helper>>(1024);
    m_leftRows = 0;
    m_outputRows = 0;
    m_leftIt = null;
    m_rightIt = null;
    m_firstMapHelper = null;
    m_exec = exec;
    if (m_ignoreMissingRows) {
        m_max = Math.min(inData[0].getRowCount(), inData[1].getRowCount());
    } else {
        m_max = Math.max(inData[0].getRowCount(), inData[1].getRowCount());
    }
    while (true) {
        if (!readLeftChunk(leftTable, map)) {
            if (!m_ignoreMissingRows) {
                processRemainingRightRows(dc, leftTable, rightTable, rightRows);
            }
            break;
        }
        if ((m_rightIt == null) || (!m_rightIt.hasNext()) || (rightRows.nextClearBit(0) <= m_rightIt.getIndex())) {
            m_rightIt = new CounterRowIterator(rightTable.iterator());
        }
        while (m_rightIt.hasNext() && (map.size() > 0)) {
            m_exec.checkCanceled();
            DataRow rightRow = m_rightIt.next();
            SoftReference<Helper> sr = map.get(rightRow.getKey());
            if (sr != null) {
                Helper h = sr.get();
                if (h == null) {
                    map.remove(rightRow.getKey());
                } else {
                    h.m_rightRow = rightRow;
                    h.m_rightIndex = m_rightIt.getIndex();
                    if (h.m_leftIndex == m_leftRows) {
                        // m_firstMapHelper = h;
                        assert h.m_predecessor == null || !map.containsKey(h.m_predecessor.m_leftRow.getKey());
                        h.m_predecessor = null;
                        DataRow joinedRow = new JoinedRow(h.m_leftRow, h.m_rightRow);
                        dc.addRowToTable(joinedRow);
                        map.remove(rightRow.getKey());
                        rightRows.set(m_rightIt.getIndex());
                        m_leftRows++;
                        m_outputRows++;
                        printProgress(rightRow.getKey());
                    }
                }
            }
        }
        processRemainingLeftRowsInMap(dc, rightTable, map, rightRows);
        if (!m_ignoreMissingRows) {
            if (rightRows.cardinality() == inData[1].getRowCount()) {
                processRemainingLeftRowsInTable(dc, leftTable, rightTable);
            }
        } else {
            m_leftRows += map.size();
            map.clear();
            if (rightRows.cardinality() == inData[1].getRowCount()) {
                break;
            }
        }
    }
    m_leftIt = null;
    m_rightIt = null;
    m_exec = null;
    m_firstMapHelper = null;
    dc.close();
    return new BufferedDataTable[] { dc.getTable() };
}