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1   /*
2    * Copyright 2016 The Netty Project
3    *
4    * The Netty Project licenses this file to you under the Apache License,
5    * version 2.0 (the "License"); you may not use this file except in compliance
6    * with the License. You may obtain a copy of the License at:
7    *
8    *   https://www.apache.org/licenses/LICENSE-2.0
9    *
10   * Unless required by applicable law or agreed to in writing, software
11   * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
12   * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
13   * License for the specific language governing permissions and limitations
14   * under the License.
15   */
16  package io.netty.buffer;
17  
18  import io.netty.util.internal.CleanableDirectBuffer;
19  import io.netty.util.internal.PlatformDependent;
20  
21  import java.nio.ByteBuffer;
22  
23  class UnpooledUnsafeNoCleanerDirectByteBuf extends UnpooledUnsafeDirectByteBuf {
24      UnpooledUnsafeNoCleanerDirectByteBuf(ByteBufAllocator alloc, int initialCapacity, int maxCapacity,
25                                           boolean allowSectionedInternalNioBufferAccess) {
26          super(alloc, initialCapacity, maxCapacity, allowSectionedInternalNioBufferAccess);
27      }
28  
29      @Override
30      protected CleanableDirectBuffer allocateDirectBuffer(int capacity) {
31          return PlatformDependent.allocateDirectBufferNoCleaner(capacity);
32      }
33  
34      @Override
35      protected ByteBuffer allocateDirect(int initialCapacity) {
36          throw new UnsupportedOperationException();
37      }
38  
39      CleanableDirectBuffer reallocateDirect(CleanableDirectBuffer oldBuffer, int initialCapacity) {
40          return PlatformDependent.reallocateDirectBufferNoCleaner(oldBuffer, initialCapacity);
41      }
42  
43      @Override
44      protected void freeDirect(ByteBuffer buffer) {
45          throw new UnsupportedOperationException();
46      }
47  
48      @Override
49      public ByteBuf capacity(int newCapacity) {
50          checkNewCapacity(newCapacity);
51  
52          int oldCapacity = capacity();
53          if (newCapacity == oldCapacity) {
54              return this;
55          }
56  
57          trimIndicesToCapacity(newCapacity);
58          setByteBuffer(reallocateDirect(cleanable, newCapacity), false);
59          return this;
60      }
61  }