--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/com/go/trove/util/DeflaterPool.java	Sat Mar 21 11:00:06 2009 +0000
@@ -0,0 +1,146 @@
+/* ====================================================================
+ * Trove - Copyright (c) 1997-2001 Walt Disney Internet Group
+ * ====================================================================
+ * The Tea Software License, Version 1.1
+ *
+ * Copyright (c) 2000 Walt Disney Internet Group. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. The end-user documentation included with the redistribution,
+ *    if any, must include the following acknowledgment:
+ *       "This product includes software developed by the
+ *        Walt Disney Internet Group (http://opensource.go.com/)."
+ *    Alternately, this acknowledgment may appear in the software itself,
+ *    if and wherever such third-party acknowledgments normally appear.
+ *
+ * 4. The names "Tea", "TeaServlet", "Kettle", "Trove" and "BeanDoc" must
+ *    not be used to endorse or promote products derived from this
+ *    software without prior written permission. For written
+ *    permission, please contact opensource@dig.com.
+ *
+ * 5. Products derived from this software may not be called "Tea",
+ *    "TeaServlet", "Kettle" or "Trove", nor may "Tea", "TeaServlet",
+ *    "Kettle", "Trove" or "BeanDoc" appear in their name, without prior
+ *    written permission of the Walt Disney Internet Group.
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED.  IN NO EVENT SHALL THE WALT DISNEY INTERNET GROUP OR ITS
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
+ * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * For more information about Tea, please see http://opensource.go.com/.
+ */
+
+package com.go.trove.util;
+
+import java.util.*;
+
+/******************************************************************************
+ * Since {@link Deflater Deflaters} can be expensive to allocate, re-use them
+ * with this pool.
+ *
+ * @author Brian S O'Neill
+ * @version
+ * <!--$$Revision: 1.1 $-->, <!--$$JustDate:--> 01/06/14 <!-- $-->
+ */
+public class DeflaterPool {
+    private static final int LIMIT;
+
+    private static List cPool;
+    private static List cNoWrapPool;
+
+    static {
+        LIMIT = Integer.getInteger("com.go.trove.util.DeflaterPool.LIMIT", 8).intValue();
+    }
+
+    public static synchronized void clear() {
+        if (cPool != null) {
+            Iterator it = cPool.iterator();
+            while (it.hasNext()) {
+                ((Deflater)it.next()).end();
+            }
+            cPool = null;
+        }
+        if (cNoWrapPool != null) {
+            Iterator it = cNoWrapPool.iterator();
+            while (it.hasNext()) {
+                ((Deflater)it.next()).end();
+            }
+            cNoWrapPool = null;
+        }
+    }
+
+    public static synchronized Deflater get(int level, boolean nowrap) {
+        List pool;
+
+        if (nowrap) {
+            if ((pool = cNoWrapPool) == null) {
+                return new Deflater(level, true);
+            }
+        }
+        else {
+            if ((pool = cPool) == null) {
+                return new Deflater(level, false);
+            }
+        }
+
+        if (pool.isEmpty()) {
+            return new Deflater(level, nowrap);
+        }
+
+        Deflater d = (Deflater)pool.remove(pool.size() - 1);
+        d.setLevel(level);
+        d.setStrategy(Deflater.DEFAULT_STRATEGY);
+        return d;
+    }
+
+    public static Deflater get(int level) {
+        return get(level, false);
+    }
+
+    public static Deflater get() {
+        return get(Deflater.DEFAULT_COMPRESSION, false);
+    }
+
+    public static synchronized void put(Deflater d) {
+        d.reset();
+        List pool;
+
+        if (d.isNoWrap()) {
+            if ((pool = cNoWrapPool) == null) {
+                pool = cNoWrapPool = new ArrayList(LIMIT);
+            }
+        }
+        else {
+            if ((pool = cPool) == null) {
+                pool = cPool = new ArrayList(LIMIT);
+            }
+        }
+
+        if (pool.size() < LIMIT) {
+            pool.add(d);
+        }
+        else {
+            d.end();
+        }
+    }
+}