gemfire-core/src/main/java/com/gemstone/gemfire/internal/cache/VersionedThinRegionEntryOffHeapIntKey.java

/*=========================================================================
 * Copyright (c) 2010-2014 Pivotal Software, Inc. All Rights Reserved.
 * This product is protected by U.S. and international copyright
 * and intellectual property laws. Pivotal products are covered by
 * one or more patents listed at http://www.pivotal.io/patents.
 *=========================================================================
 */
package com.gemstone.gemfire.internal.cache;
// DO NOT modify this class. It was generated from LeafRegionEntry.cpp
import java.util.concurrent.atomic.AtomicLongFieldUpdater;
import com.gemstone.gemfire.cache.EntryEvent;
import com.gemstone.gemfire.distributed.internal.membership.InternalDistributedMember;
import com.gemstone.gemfire.internal.cache.versions.VersionSource;
import com.gemstone.gemfire.internal.cache.versions.VersionStamp;
import com.gemstone.gemfire.internal.cache.versions.VersionTag;
import com.gemstone.gemfire.internal.offheap.OffHeapRegionEntryHelper;
import com.gemstone.gemfire.internal.offheap.annotations.Released;
import com.gemstone.gemfire.internal.offheap.annotations.Retained;
import com.gemstone.gemfire.internal.offheap.annotations.Unretained;
import com.gemstone.gemfire.internal.util.concurrent.CustomEntryConcurrentHashMap.HashEntry;
// macros whose definition changes this class:
// disk: DISK
// lru: LRU
// stats: STATS
// versioned: VERSIONED
// offheap: OFFHEAP
// One of the following key macros must be defined:
// key object: KEY_OBJECT
// key int: KEY_INT
// 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
 * bin/generateRegionEntryClasses.sh from the directory
 * that contains your build.xml.
 */
public class VersionedThinRegionEntryOffHeapIntKey extends VersionedThinRegionEntryOffHeap {
  public VersionedThinRegionEntryOffHeapIntKey (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<VersionedThinRegionEntryOffHeapIntKey> lastModifiedUpdater
    = AtomicLongFieldUpdater.newUpdater(VersionedThinRegionEntryOffHeapIntKey.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<VersionedThinRegionEntryOffHeapIntKey> ohAddrUpdater = AtomicLongFieldUpdater.newUpdater(VersionedThinRegionEntryOffHeapIntKey.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 final int getEntryHash() {
    return this.hash;
  }
  protected void setEntryHash(int v) {
    this.hash = v;
  }
  /**
   * @see HashEntry#getNextEntry()
   */
  public final HashEntry<Object, Object> getNextEntry() {
    return this.next;
  }
  /**
   * @see HashEntry#setNextEntry
   */
  public final void setNextEntry(final HashEntry<Object, Object> n) {
    this.next = n;
  }
  // DO NOT modify this class. It was generated from LeafRegionEntry.cpp
  // versioned code
  private VersionSource memberID;
  private short entryVersionLowBytes;
  private short regionVersionHighBytes;
  private int regionVersionLowBytes;
  private byte entryVersionHighByte;
  private byte distributedSystemId;
  public int getEntryVersion() {
    return ((entryVersionHighByte << 16) & 0xFF0000) | (entryVersionLowBytes & 0xFFFF);
  }
  public long getRegionVersion() {
    return (((long)regionVersionHighBytes) << 32) | (regionVersionLowBytes & 0x00000000FFFFFFFFL);
  }
  public long getVersionTimeStamp() {
    return getLastModified();
  }
  public void setVersionTimeStamp(long time) {
    setLastModified(time);
  }
  public VersionSource getMemberID() {
    return this.memberID;
  }
  public int getDistributedSystemId() {
    return this.distributedSystemId;
  }
  // DO NOT modify this class. It was generated from LeafRegionEntry.cpp
  public void setVersions(VersionTag tag) {
    this.memberID = tag.getMemberID();
    int eVersion = tag.getEntryVersion();
    this.entryVersionLowBytes = (short)(eVersion & 0xffff);
    this.entryVersionHighByte = (byte)((eVersion & 0xff0000) >> 16);
    this.regionVersionHighBytes = tag.getRegionVersionHighBytes();
    this.regionVersionLowBytes = tag.getRegionVersionLowBytes();
    if (!(tag.isGatewayTag()) && this.distributedSystemId == tag.getDistributedSystemId()) {
      if (getVersionTimeStamp() <= tag.getVersionTimeStamp()) {
        setVersionTimeStamp(tag.getVersionTimeStamp());
      } else {
        tag.setVersionTimeStamp(getVersionTimeStamp());
      }
    } else {
      setVersionTimeStamp(tag.getVersionTimeStamp());
    }
    this.distributedSystemId = (byte)(tag.getDistributedSystemId() & 0xff);
  }
  public void setMemberID(VersionSource memberID) {
    this.memberID = memberID;
  }
  @Override
  public VersionStamp getVersionStamp() {
    return this;
  }
  // DO NOT modify this class. It was generated from LeafRegionEntry.cpp
  public VersionTag asVersionTag() {
    VersionTag tag = VersionTag.create(memberID);
    tag.setEntryVersion(getEntryVersion());
    tag.setRegionVersion(this.regionVersionHighBytes, this.regionVersionLowBytes);
    tag.setVersionTimeStamp(getVersionTimeStamp());
    tag.setDistributedSystemId(this.distributedSystemId);
    return tag;
  }
  public void processVersionTag(LocalRegion r, VersionTag tag,
      boolean isTombstoneFromGII, boolean hasDelta,
      VersionSource thisVM, InternalDistributedMember sender, boolean checkForConflicts) {
    basicProcessVersionTag(r, tag, isTombstoneFromGII, hasDelta, thisVM, sender, checkForConflicts);
  }
  @Override
  public void processVersionTag(EntryEvent cacheEvent) {
    // this keeps Eclipse happy.  without it the sender chain becomes confused
    // while browsing this code
    super.processVersionTag(cacheEvent);
  }
  /** get rvv internal high byte.  Used by region entries for transferring to storage */
  public short getRegionVersionHighBytes() {
    return this.regionVersionHighBytes;
  }
  /** get rvv internal low bytes.  Used by region entries for transferring to storage */
  public int getRegionVersionLowBytes() {
    return this.regionVersionLowBytes;
  }
  // DO NOT modify this class. It was generated from LeafRegionEntry.cpp
  // key code
  private final int key;
  @Override
  public final 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
}