geode-core/src/main/java/org/apache/geode/internal/cache/VMThinRegionEntryOffHeapIntKey.java

/*
 * Licensed to the Apache Software Foundation (ASF) under one or more contributor license
 * agreements. See the NOTICE file distributed with this work for additional information regarding
 * copyright ownership. The ASF 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 org.apache.geode.internal.cache;

// DO NOT modify this class. It was generated from LeafRegionEntry.cpp



import java.util.concurrent.atomic.AtomicLongFieldUpdater;

import org.apache.geode.internal.offheap.OffHeapRegionEntryHelper;
import org.apache.geode.internal.offheap.annotations.Released;
import org.apache.geode.internal.offheap.annotations.Retained;
import org.apache.geode.internal.offheap.annotations.Unretained;

import org.apache.geode.internal.util.concurrent.CustomEntryConcurrentHashMap.HashEntry;

// macros whose definition changes this class:
// disk: DISK
// lru: LRU
// stats: STATS
// versioned: VERSIONED
// offheap: 1
// One of the following key macros must be defined:
// key object: KEY_OBJECT
// key int: 1
// key long: KEY_LONG
// key uuid: KEY_UUID
// key string1: KEY_STRING1
// key string2: KEY_STRING2

/**
 * Do not modify this class. It was generated. Instead modify LeafRegionEntry.cpp and then run
 * ./dev-tools/generateRegionEntryClasses.sh (it must be run from the top level directory).
 */
public class VMThinRegionEntryOffHeapIntKey extends VMThinRegionEntryOffHeap {
  public VMThinRegionEntryOffHeapIntKey(RegionEntryContext context, int key,

      @Retained

      Object value



  ) {
    super(context,



        value

    );
    // DO NOT modify this class. It was generated from LeafRegionEntry.cpp



    this.key = key;

  }

  // DO NOT modify this class. It was generated from LeafRegionEntry.cpp

  // common code
  protected int hash;
  private HashEntry<Object, Object> next;
  @SuppressWarnings("unused")
  private volatile long lastModified;
  private static final AtomicLongFieldUpdater<VMThinRegionEntryOffHeapIntKey> lastModifiedUpdater =
      AtomicLongFieldUpdater.newUpdater(VMThinRegionEntryOffHeapIntKey.class, "lastModified");

  /**
   * All access done using ohAddrUpdater so it is used even though the compiler can not tell it is.
   */
  @SuppressWarnings("unused")
  @Retained
  @Released
  private volatile long ohAddress;
  /**
   * I needed to add this because I wanted clear to call setValue which normally can only be called
   * while the re is synced. But if I sync in that code it causes a lock ordering deadlock with the
   * disk regions because they also get a rw lock in clear. Some hardware platforms do not support
   * CAS on a long. If gemfire is run on one of those the AtomicLongFieldUpdater does a sync on the
   * re and we will once again be deadlocked. I don't know if we support any of the hardware
   * platforms that do not have a 64bit CAS. If we do then we can expect deadlocks on disk regions.
   */
  private final static AtomicLongFieldUpdater<VMThinRegionEntryOffHeapIntKey> ohAddrUpdater =
      AtomicLongFieldUpdater.newUpdater(VMThinRegionEntryOffHeapIntKey.class, "ohAddress");

  @Override
  public Token getValueAsToken() {
    return OffHeapRegionEntryHelper.getValueAsToken(this);
  }

  @Override
  protected Object getValueField() {
    return OffHeapRegionEntryHelper._getValue(this);
  }

  // DO NOT modify this class. It was generated from LeafRegionEntry.cpp
  @Override

  @Unretained
  protected void setValueField(@Unretained Object v) {



    OffHeapRegionEntryHelper.setValue(this, v);
  }

  @Override

  @Retained

  public Object _getValueRetain(RegionEntryContext context, boolean decompress) {
    return OffHeapRegionEntryHelper._getValueRetain(this, decompress, context);
  }

  @Override
  public long getAddress() {
    return ohAddrUpdater.get(this);
  }

  @Override
  public boolean setAddress(long expectedAddr, long newAddr) {
    return ohAddrUpdater.compareAndSet(this, expectedAddr, newAddr);
  }

  @Override

  @Released

  public void release() {
    OffHeapRegionEntryHelper.releaseEntry(this);
  }

  @Override
  public void returnToPool() {
    // Deadcoded for now; never was working
    // if (this instanceof VMThinRegionEntryLongKey) {
    // factory.returnToPool((VMThinRegionEntryLongKey)this);
    // }
  }

  protected long getLastModifiedField() {
    return lastModifiedUpdater.get(this);
  }

  protected boolean compareAndSetLastModifiedField(long expectedValue, long newValue) {
    return lastModifiedUpdater.compareAndSet(this, expectedValue, newValue);
  }

  /**
   * @see HashEntry#getEntryHash()
   */
  public int getEntryHash() {
    return this.hash;
  }

  protected void setEntryHash(int v) {
    this.hash = v;
  }

  /**
   * @see HashEntry#getNextEntry()
   */
  public HashEntry<Object, Object> getNextEntry() {
    return this.next;
  }

  /**
   * @see HashEntry#setNextEntry
   */
  public void setNextEntry(final HashEntry<Object, Object> n) {
    this.next = n;
  }



  // DO NOT modify this class. It was generated from LeafRegionEntry.cpp

  // key code



  private final int key;

  @Override
  public Object getKey() {
    return this.key;
  }

  @Override
  public boolean isKeyEqual(Object k) {
    if (k instanceof Integer) {
      return ((Integer) k).intValue() == this.key;
    }
    return false;
  }


  // DO NOT modify this class. It was generated from LeafRegionEntry.cpp
}