--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/src/java.desktop/share/classes/sun/java2d/marlin/FloatArrayCache.java	Mon Nov 23 14:35:55 2015 -0800
@@ -0,0 +1,152 @@
+/*
+ * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+package sun.java2d.marlin;
+
+import java.util.ArrayDeque;
+import java.util.Arrays;
+import static sun.java2d.marlin.MarlinUtils.logException;
+import static sun.java2d.marlin.MarlinUtils.logInfo;
+
+final class FloatArrayCache implements MarlinConst {
+
+    private final int arraySize;
+    private final ArrayDeque<float[]> floatArrays;
+    // stats
+    private int getOp = 0;
+    private int createOp = 0;
+    private int returnOp = 0;
+
+    void dumpStats() {
+        if (getOp > 0) {
+            logInfo("FloatArrayCache[" + arraySize + "]: get: " + getOp
+                    + " created: " + createOp + " - returned: " + returnOp
+                    + " :: cache size: " + floatArrays.size());
+        }
+    }
+
+    FloatArrayCache(final int arraySize) {
+        this.arraySize = arraySize;
+        // small but enough: almost 1 cache line
+        this.floatArrays = new ArrayDeque<float[]>(6);
+    }
+
+    float[] getArray() {
+        if (doStats) {
+            getOp++;
+        }
+
+        // use cache
+        final float[] array = floatArrays.pollLast();
+
+        if (array != null) {
+            return array;
+        }
+
+        if (doStats) {
+            createOp++;
+        }
+
+        return new float[arraySize];
+    }
+
+    void putDirtyArray(final float[] array, final int length) {
+        if (length != arraySize) {
+            if (doChecks) {
+                System.out.println("ArrayCache: bad length = " + length);
+            }
+            return;
+        }
+        if (doStats) {
+            returnOp++;
+        }
+
+        // NO clean-up of array data = DIRTY ARRAY
+
+        if (doCleanDirty) {
+            // Force zero-fill dirty arrays:
+            Arrays.fill(array, 0, array.length, 0f);
+        }
+
+        // fill cache:
+        floatArrays.addLast(array);
+    }
+
+    void putArray(final float[] array, final int length,
+                  final int fromIndex, final int toIndex)
+    {
+        if (length != arraySize) {
+            if (doChecks) {
+                System.out.println("ArrayCache: bad length = " + length);
+            }
+            return;
+        }
+        if (doStats) {
+            returnOp++;
+        }
+
+        // clean-up array of dirty part[fromIndex; toIndex[
+        fill(array, fromIndex, toIndex, 0f);
+
+        // fill cache:
+        floatArrays.addLast(array);
+    }
+
+    static void fill(final float[] array, final int fromIndex,
+                     final int toIndex, final float value)
+    {
+        // clear array data:
+        /*
+         * Arrays.fill is faster than System.arraycopy(empty array)
+         * or Unsafe.setMemory(byte 0)
+         */
+        if (toIndex != 0) {
+            Arrays.fill(array, fromIndex, toIndex, value);
+        }
+
+        if (doChecks) {
+            check(array, 0, array.length, value);
+        }
+    }
+
+    static void check(final float[] array, final int fromIndex,
+                      final int toIndex, final float value)
+    {
+        if (doChecks) {
+            // check zero on full array:
+            for (int i = fromIndex; i < toIndex; i++) {
+                if (array[i] != value) {
+                    logException("Invalid array value at " + i + "\n"
+                            + Arrays.toString(array), new Throwable());
+
+                    // ensure array is correctly filled:
+                    Arrays.fill(array, value);
+
+                    return;
+                }
+            }
+        }
+    }
+}