/*
 * 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.cache.EntryEvent;

import org.apache.geode.distributed.internal.membership.InternalDistributedMember;
import org.apache.geode.internal.cache.versions.VersionSource;
import org.apache.geode.internal.cache.versions.VersionStamp;
import org.apache.geode.internal.cache.versions.VersionTag;

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: 1
// offheap: 1
// 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: 1

/**
 * 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 VersionedThinRegionEntryOffHeapStringKey2 extends VersionedThinRegionEntryOffHeap {
  public VersionedThinRegionEntryOffHeapStringKey2(RegionEntryContext context, String key,

      @Retained

      Object value

      , boolean byteEncode

  ) {
    super(context,



        value

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

    // caller has already confirmed that key.length <= MAX_INLINE_STRING_KEY
    long tmpBits1 = 0L;
    long tmpBits2 = 0L;
    if (byteEncode) {
      for (int i = key.length() - 1; i >= 0; i--) {
        // Note: we know each byte is <= 0x7f so the "& 0xff" is not needed. But I added it in to
        // keep findbugs happy.
        if (i < 7) {
          tmpBits1 |= (byte) key.charAt(i) & 0xff;
          tmpBits1 <<= 8;
        } else {
          tmpBits2 <<= 8;
          tmpBits2 |= (byte) key.charAt(i) & 0xff;
        }
      }
      tmpBits1 |= 1 << 6;
    } else {
      for (int i = key.length() - 1; i >= 0; i--) {
        if (i < 3) {
          tmpBits1 |= key.charAt(i);
          tmpBits1 <<= 16;
        } else {
          tmpBits2 <<= 16;
          tmpBits2 |= key.charAt(i);
        }
      }
    }
    tmpBits1 |= key.length();
    this.bits1 = tmpBits1;
    this.bits2 = tmpBits2;

  }

  // 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<VersionedThinRegionEntryOffHeapStringKey2> lastModifiedUpdater =
      AtomicLongFieldUpdater.newUpdater(VersionedThinRegionEntryOffHeapStringKey2.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<VersionedThinRegionEntryOffHeapStringKey2> ohAddrUpdater =
      AtomicLongFieldUpdater.newUpdater(VersionedThinRegionEntryOffHeapStringKey2.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

  // 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

  // strlen is encoded in lowest 6 bits (max strlen is 63)
  // character encoding info is in bits 7 and 8
  // The other bits are used to encoded character data.
  private final long bits1;
  // bits2 encodes character data
  private final long bits2;

  private int getKeyLength() {
    return (int) (this.bits1 & 0x003fL);
  }

  private int getEncoding() {
    // 0 means encoded as char
    // 1 means encoded as bytes that are all <= 0x7f;
    return (int) (this.bits1 >> 6) & 0x03;
  }

  @Override
  public Object getKey() {
    int keylen = getKeyLength();
    char[] chars = new char[keylen];
    long tmpBits1 = this.bits1;
    long tmpBits2 = this.bits2;
    if (getEncoding() == 1) {
      for (int i = 0; i < keylen; i++) {
        if (i < 7) {
          tmpBits1 >>= 8;
          chars[i] = (char) (tmpBits1 & 0x00ff);
        } else {
          chars[i] = (char) (tmpBits2 & 0x00ff);
          tmpBits2 >>= 8;
        }
      }
    } else {
      for (int i = 0; i < keylen; i++) {
        if (i < 3) {
          tmpBits1 >>= 16;
          chars[i] = (char) (tmpBits1 & 0x00FFff);
        } else {
          chars[i] = (char) (tmpBits2 & 0x00FFff);
          tmpBits2 >>= 16;
        }
      }
    }
    return new String(chars);
  }

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

  @Override
  public boolean isKeyEqual(Object k) {
    if (k instanceof String) {
      String str = (String) k;
      int keylen = getKeyLength();
      if (str.length() == keylen) {
        long tmpBits1 = this.bits1;
        long tmpBits2 = this.bits2;
        if (getEncoding() == 1) {
          for (int i = 0; i < keylen; i++) {
            char c;
            if (i < 7) {
              tmpBits1 >>= 8;
              c = (char) (tmpBits1 & 0x00ff);
            } else {
              c = (char) (tmpBits2 & 0x00ff);
              tmpBits2 >>= 8;
            }
            if (str.charAt(i) != c) {
              return false;
            }
          }
        } else {
          for (int i = 0; i < keylen; i++) {
            char c;
            if (i < 3) {
              tmpBits1 >>= 16;
              c = (char) (tmpBits1 & 0x00FFff);
            } else {
              c = (char) (tmpBits2 & 0x00FFff);
              tmpBits2 >>= 16;
            }
            if (str.charAt(i) != c) {
              return false;
            }
          }
        }
        return true;
      }
    }
    return false;
  }

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

