/*
    * Copyright 2016 The Netty Project
    *
    * The Netty Project licenses this file to you under the Apache License,
    * version 2.0 (the "License"); you may not use this file except in compliance
    * with the License. You may obtain a copy of the License at:
    *
    *   http://www.apache.org/licenses/LICENSE-2.0
    *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
   * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
   * License for the specific language governing permissions and limitations
   * under the License.
   */
  package io.netty.buffer;
  
  import io.netty.util.internal.PlatformDependent;
  
  import java.nio.ByteBuffer;
  
  class UnpooledUnsafeNoCleanerDirectByteBuf extends UnpooledUnsafeDirectByteBuf {
  
      UnpooledUnsafeNoCleanerDirectByteBuf(ByteBufAllocator alloc, int initialCapacity, int maxCapacity) {
          super(alloc, initialCapacity, maxCapacity);
      }
  
      @Override
      protected ByteBuffer allocateDirect(int initialCapacity) {
          return PlatformDependent.allocateDirectNoCleaner(initialCapacity);
      }
  
      ByteBuffer reallocateDirect(ByteBuffer oldBuffer, int initialCapacity) {
          return PlatformDependent.reallocateDirectNoCleaner(oldBuffer, initialCapacity);
      }
  
      @Override
      protected void freeDirect(ByteBuffer buffer) {
          PlatformDependent.freeDirectNoCleaner(buffer);
      }
  
      @Override
      public ByteBuf capacity(int newCapacity) {
          checkNewCapacity(newCapacity);
  
          int oldCapacity = capacity();
          if (newCapacity == oldCapacity) {
              return this;
          }
  
          ByteBuffer newBuffer = reallocateDirect(buffer, newCapacity);
  
          if (newCapacity < oldCapacity) {
              if (readerIndex() < newCapacity) {
                  if (writerIndex() > newCapacity) {
                      writerIndex(newCapacity);
                  }
              } else {
                  setIndex(newCapacity, newCapacity);
              }
          }
          setByteBuffer(newBuffer, false);
          return this;
      }
  }