1 /*
   2  * Copyright (c) 2015, 2017, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any

 213                 return;
 214             }
 215             if (DO_STATS) {
 216                 stats.returnOp++;
 217             }
 218             // fill cache:
 219             if (arrays.length > tail) {
 220                 arrays[tail++] = array;
 221 
 222                 if (DO_STATS) {
 223                     stats.updateMaxSize(tail);
 224                 }
 225             } else if (DO_CHECKS) {
 226                 logInfo(getLogPrefix(clean) + "ByteArrayCache: "
 227                         + "array capacity exceeded !");
 228             }
 229         }
 230     }
 231 
 232     static byte[] createArray(final int length, final boolean clean) {
 233         if (clean) {
 234             return new byte[length];
 235         }
 236         // use JDK9 Unsafe.allocateUninitializedArray(class, length):
 237         return (byte[]) OffHeapArray.UNSAFE.allocateUninitializedArray(byte.class, length);
 238     }
 239 
 240     static void fill(final byte[] array, final int fromIndex,
 241                      final int toIndex, final byte value)
 242     {
 243         // clear array data:
 244         Arrays.fill(array, fromIndex, toIndex, value);
 245         if (DO_CHECKS) {
 246             check(array, fromIndex, toIndex, value);
 247         }
 248     }
 249 
 250     public static void check(final byte[] array, final int fromIndex,
 251                              final int toIndex, final byte value)
 252     {
 253         if (DO_CHECKS) {
 254             // check zero on full array:
 255             for (int i = 0; i < array.length; i++) {
 256                 if (array[i] != value) {
 257                     logException("Invalid value at: " + i + " = " + array[i]

   1 /*
   2  * Copyright (c) 2015, 2018, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any

 213                 return;
 214             }
 215             if (DO_STATS) {
 216                 stats.returnOp++;
 217             }
 218             // fill cache:
 219             if (arrays.length > tail) {
 220                 arrays[tail++] = array;
 221 
 222                 if (DO_STATS) {
 223                     stats.updateMaxSize(tail);
 224                 }
 225             } else if (DO_CHECKS) {
 226                 logInfo(getLogPrefix(clean) + "ByteArrayCache: "
 227                         + "array capacity exceeded !");
 228             }
 229         }
 230     }
 231 
 232     static byte[] createArray(final int length, final boolean clean) {

 233         return new byte[length];



 234     }
 235 
 236     static void fill(final byte[] array, final int fromIndex,
 237                      final int toIndex, final byte value)
 238     {
 239         // clear array data:
 240         Arrays.fill(array, fromIndex, toIndex, value);
 241         if (DO_CHECKS) {
 242             check(array, fromIndex, toIndex, value);
 243         }
 244     }
 245 
 246     public static void check(final byte[] array, final int fromIndex,
 247                              final int toIndex, final byte value)
 248     {
 249         if (DO_CHECKS) {
 250             // check zero on full array:
 251             for (int i = 0; i < array.length; i++) {
 252                 if (array[i] != value) {
 253                     logException("Invalid value at: " + i + " = " + array[i]