com.gemstone.gemfire.internal.cache.VMThinDiskLRURegionEntryOffHeap Maven / Gradle / Ivy
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SnappyData store based off Pivotal GemFireXD
/*
* Copyright (c) 2010-2015 Pivotal Software, Inc. All rights reserved.
*
* Licensed 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. See accompanying
* LICENSE file.
*/
/**
* 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.
*/
package com.gemstone.gemfire.internal.cache;
import java.util.concurrent.atomic.AtomicLongFieldUpdater;
import com.gemstone.gemfire.internal.cache.Token;
import com.gemstone.gemfire.internal.concurrent.AtomicUpdaterFactory;
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.cache.lru.EnableLRU;
import com.gemstone.gemfire.internal.cache.persistence.DiskRecoveryStore;
import com.gemstone.gemfire.internal.cache.lru.LRUClockNode;
import com.gemstone.gemfire.internal.concurrent.CustomEntryConcurrentHashMap.HashEntry;
import com.gemstone.gemfire.internal.size.ReflectionSingleObjectSizer;
@SuppressWarnings("serial")
public class VMThinDiskLRURegionEntryOffHeap extends VMThinDiskLRURegionEntry
implements OffHeapRegionEntry
{
public VMThinDiskLRURegionEntryOffHeap (RegionEntryContext context, Object key,
@Retained
Object value
) {
super(context,
(value instanceof RecoveredEntry ? null : value)
);
initialize(context, value);
this.key = key;
}
protected int hash;
private HashEntry next;
@SuppressWarnings("unused")
private volatile long lastModified;
private static final AtomicLongFieldUpdater lastModifiedUpdater
= AtomicUpdaterFactory.newLongFieldUpdater(VMThinDiskLRURegionEntryOffHeap.class, "lastModified");
protected long getlastModifiedField() {
return lastModifiedUpdater.get(this);
}
protected final boolean compareAndSetLastModifiedField(long expectedValue,
long newValue) {
return lastModifiedUpdater.compareAndSet(this, expectedValue, newValue);
}
@Override
public final int getEntryHash() {
return this.hash;
}
@Override
protected final void setEntryHash(int v) {
this.hash = v;
}
@Override
public final HashEntry getNextEntry() {
return this.next;
}
@Override
public final void setNextEntry(final HashEntry n) {
this.next = n;
}
protected final void initialize(RegionEntryContext drs, Object value) {
boolean isBackup;
if (drs instanceof LocalRegion) {
isBackup = ((LocalRegion)drs).getDiskRegion().isBackup();
} else if (drs instanceof PlaceHolderDiskRegion) {
isBackup = true;
} else {
throw new IllegalArgumentException("expected a LocalRegion or PlaceHolderDiskRegion");
}
if (isBackup) {
diskInitialize(drs, value);
}
}
@Override
public final synchronized int updateAsyncEntrySize(EnableLRU capacityController) {
int oldSize = getEntrySize();
int newSize = getKeySize(getRawKey(), capacityController);
setEntrySize(newSize);
int delta = newSize - oldSize;
return delta;
}
private final int getKeySize(Object key, EnableLRU capacityController) {
final GemFireCacheImpl.StaticSystemCallbacks sysCb =
GemFireCacheImpl.getInternalProductCallbacks();
if (sysCb == null || capacityController.getEvictionAlgorithm().isLRUEntry()) {
return capacityController.entrySize(key, null);
}
else {
int tries = 1;
do {
final int size = sysCb.entryKeySizeInBytes(key, this);
if (size >= 0) {
return size - ReflectionSingleObjectSizer.REFERENCE_SIZE;
}
if ((tries % MAX_READ_TRIES_YIELD) == 0) {
Thread.yield();
}
} while (tries++ <= MAX_READ_TRIES);
throw sysCb.checkCacheForNullKeyValue("DiskLRU RegionEntry#getKeySize");
}
}
private void diskInitialize(RegionEntryContext context, Object value) {
DiskRecoveryStore drs = (DiskRecoveryStore)context;
DiskStoreImpl ds = drs.getDiskStore();
long maxOplogSize = ds.getMaxOplogSize();
this.id = DiskId.createDiskId(maxOplogSize, true , ds.needsLinkedList());
Helper.initialize(this, drs, value);
}
protected DiskId id;
public final DiskId getDiskId() {
return this.id;
}
@Override
public final void setDiskId(RegionEntry old) {
this.id = ((AbstractDiskRegionEntry)old).getDiskId();
}
@Override
public final void setDelayedDiskId(LocalRegion r) {
DiskStoreImpl ds = r.getDiskStore();
long maxOplogSize = ds.getMaxOplogSize();
this.id = DiskId.createDiskId(maxOplogSize, false , ds.needsLinkedList());
}
public final synchronized int updateEntrySize(EnableLRU capacityController) {
return updateEntrySize(capacityController, _getValue());
}
public final synchronized int updateEntrySize(EnableLRU capacityController,
Object value) {
int oldSize = getEntrySize();
int newSize = capacityController.entrySize(getRawKey(), value);
setEntrySize(newSize);
int delta = newSize - oldSize;
return delta;
}
private LRUClockNode nextLRU;
private LRUClockNode prevLRU;
private int size;
public final void setNextLRUNode( LRUClockNode next ) {
this.nextLRU = next;
}
public final LRUClockNode nextLRUNode() {
return this.nextLRU;
}
public final void setPrevLRUNode( LRUClockNode prev ) {
this.prevLRU = prev;
}
public final LRUClockNode prevLRUNode() {
return this.prevLRU;
}
public final int getEntrySize() {
return this.size;
}
protected final void setEntrySize(int size) {
this.size = size;
}
private Object key;
@Override
public final Object getRawKey() {
return this.key;
}
@Override
protected final void _setRawKey(Object key) {
this.key = key;
}
@Retained @Released private volatile long ohAddress;
private final static AtomicLongFieldUpdater ohAddrUpdater =
AtomicUpdaterFactory.newLongFieldUpdater(VMThinDiskLRURegionEntryOffHeap.class, "ohAddress");
@Override
public final boolean isOffHeap() {
return true;
}
@Override
public final Token getValueAsToken() {
return OffHeapRegionEntryHelper.getValueAsToken(this);
}
@Override
@Unretained
protected final Object getValueField() {
return OffHeapRegionEntryHelper._getValue(this);
}
@Override
protected final void setValueField(@Unretained Object v) {
OffHeapRegionEntryHelper.setValue(this, v);
}
@Override
@Retained
public final Object _getValueRetain(RegionEntryContext context,
boolean decompress) {
return OffHeapRegionEntryHelper._getValueRetain(this, decompress);
}
@Override
public final long getAddress() {
return ohAddrUpdater.get(this);
}
@Override
public final boolean setAddress(long expectedAddr, long newAddr) {
return ohAddrUpdater.compareAndSet(this, expectedAddr, newAddr);
}
@Override
@Released
public final void release() {
OffHeapRegionEntryHelper.releaseEntry(this);
}
private static RegionEntryFactory factory = new RegionEntryFactory() {
public final RegionEntry createEntry(RegionEntryContext context, Object key, Object value) {
return new VMThinDiskLRURegionEntryOffHeap(context, key, value);
}
public final Class getEntryClass() {
return VMThinDiskLRURegionEntryOffHeap.class;
}
public RegionEntryFactory makeVersioned() {
return VMThinDiskLRURegionEntryOffHeap.getEntryFactory();
}
@Override
public RegionEntryFactory makeOnHeap() {
return VMThinDiskLRURegionEntryHeap.getEntryFactory();
}
};
public static RegionEntryFactory getEntryFactory() {
return factory;
}
}