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Apache Geode provides a database-like consistency model, reliable transaction processing and a shared-nothing architecture to maintain very low latency performance with high concurrency processing
/*
* 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.cache.lru.EnableLRU;
import org.apache.geode.internal.cache.persistence.DiskRecoveryStore;
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: 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
* ./dev-tools/generateRegionEntryClasses.sh (it must be run from the top level directory).
*/
public class VMThinDiskRegionEntryOffHeapObjectKey extends VMThinDiskRegionEntryOffHeap {
public VMThinDiskRegionEntryOffHeapObjectKey(RegionEntryContext context, Object key,
@Retained Object value) {
super(context, (value instanceof RecoveredEntry ? null : value));
// DO NOT modify this class. It was generated from LeafRegionEntry.cpp
initialize(context, value);
this.key = key;
}
// DO NOT modify this class. It was generated from LeafRegionEntry.cpp
// common code
protected int hash;
private HashEntry next;
@SuppressWarnings("unused")
private volatile long lastModified;
private static final AtomicLongFieldUpdater lastModifiedUpdater =
AtomicLongFieldUpdater.newUpdater(VMThinDiskRegionEntryOffHeapObjectKey.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 ohAddrUpdater =
AtomicLongFieldUpdater.newUpdater(VMThinDiskRegionEntryOffHeapObjectKey.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 getNextEntry() {
return this.next;
}
/**
* @see HashEntry#setNextEntry
*/
public final void setNextEntry(final HashEntry n) {
this.next = n;
}
// DO NOT modify this class. It was generated from LeafRegionEntry.cpp
// disk code
protected void initialize(RegionEntryContext context, Object value) {
diskInitialize(context, value);
}
@Override
public int updateAsyncEntrySize(EnableLRU capacityController) {
throw new IllegalStateException("should never be called");
}
// DO NOT modify this class. It was generated from LeafRegionEntry.cpp
private void diskInitialize(RegionEntryContext context, Object value) {
DiskRecoveryStore drs = (DiskRecoveryStore) context;
DiskStoreImpl ds = drs.getDiskStore();
long maxOplogSize = ds.getMaxOplogSize();
// get appropriate instance of DiskId implementation based on maxOplogSize
this.id = DiskId.createDiskId(maxOplogSize, true/* is persistence */, ds.needsLinkedList());
Helper.initialize(this, drs, value);
}
/**
* DiskId
*
* @since GemFire 5.1
*/
protected DiskId id;// = new DiskId();
public DiskId getDiskId() {
return this.id;
}
@Override
void setDiskId(RegionEntry old) {
this.id = ((AbstractDiskRegionEntry) old).getDiskId();
}
// // inlining DiskId
// // always have these fields
// /**
// * id consists of
// * most significant
// * 1 byte = users bits
// * 2-8 bytes = oplog id
// * least significant.
// *
// * The highest bit in the oplog id part is set to 1 if the oplog id
// * is negative.
// * @todo this field could be an int for an overflow only region
// */
// private long id;
// /**
// * Length of the bytes on disk.
// * This is always set. If the value is invalid then it will be set to 0.
// * The most significant bit is used by overflow to mark it as needing to be written.
// */
// protected int valueLength = 0;
// // have intOffset or longOffset
// // intOffset
// /**
// * The position in the oplog (the oplog offset) where this entry's value is
// * stored
// */
// private volatile int offsetInOplog;
// // longOffset
// /**
// * The position in the oplog (the oplog offset) where this entry's value is
// * stored
// */
// private volatile long offsetInOplog;
// // have overflowOnly or persistence
// // overflowOnly
// // no fields
// // persistent
// /** unique entry identifier * */
// private long keyId;
// DO NOT modify this class. It was generated from LeafRegionEntry.cpp
// key code
private final Object key;
@Override
public final Object getKey() {
return this.key;
}
// DO NOT modify this class. It was generated from LeafRegionEntry.cpp
}