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HHH-7631 - Improve performance of UpdateTimestampsCache 

(cherry picked from commit f85e9247e9)
This commit is contained in:
Steve Ebersole 2012-09-21 07:02:16 -05:00
parent 807578ed18
commit 839334db31
1 changed files with 58 additions and 63 deletions
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121
hibernate-core/src/main/java/org/hibernate/cache/spi/UpdateTimestampsCache.java vendored
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@ -26,7 +26,6 @@ package org.hibernate.cache.spi;
import java.io.Serializable;
import java.util.Properties;
import java.util.Set;
import java.util.concurrent.locks.ReentrantReadWriteLock;
import org.jboss.logging.Logger;
@ -51,100 +50,96 @@ public class UpdateTimestampsCache {
public static final String REGION_NAME = UpdateTimestampsCache.class.getName();
private static final CoreMessageLogger LOG = Logger.getMessageLogger( CoreMessageLogger.class, UpdateTimestampsCache.class.getName() );
private ReentrantReadWriteLock readWriteLock = new ReentrantReadWriteLock();
private final TimestampsRegion region;
private final SessionFactoryImplementor factory;
private final TimestampsRegion region;
public UpdateTimestampsCache(Settings settings, Properties props, final SessionFactoryImplementor factory) throws HibernateException {
this.factory = factory;
String prefix = settings.getCacheRegionPrefix();
String regionName = prefix == null ? REGION_NAME : prefix + '.' + REGION_NAME;
final String prefix = settings.getCacheRegionPrefix();
final String regionName = prefix == null ? REGION_NAME : prefix + '.' + REGION_NAME;
LOG.startingUpdateTimestampsCache( regionName );
this.region = settings.getRegionFactory().buildTimestampsRegion( regionName, props );
}
@SuppressWarnings({"UnusedDeclaration"})
public UpdateTimestampsCache(Settings settings, Properties props)
throws HibernateException {
this(settings, props, null);
public UpdateTimestampsCache(Settings settings, Properties props) throws HibernateException {
this( settings, props, null );
}
@SuppressWarnings({"UnnecessaryBoxing"})
public void preinvalidate(Serializable[] spaces) throws CacheException {
readWriteLock.writeLock().lock();
final boolean debug = LOG.isDebugEnabled();
final boolean stats = factory != null && factory.getStatistics().isStatisticsEnabled();
try {
Long ts = region.nextTimestamp() + region.getTimeout();
for ( Serializable space : spaces ) {
final Long ts = region.nextTimestamp() + region.getTimeout();
for ( Serializable space : spaces ) {
if ( debug ) {
LOG.debugf( "Pre-invalidating space [%s], timestamp: %s", space, ts );
//put() has nowait semantics, is this really appropriate?
//note that it needs to be async replication, never local or sync
region.put( space, ts );
if ( factory != null && factory.getStatistics().isStatisticsEnabled() ) {
factory.getStatisticsImplementor().updateTimestampsCachePut();
}
}
}
finally {
readWriteLock.writeLock().unlock();
//put() has nowait semantics, is this really appropriate?
//note that it needs to be async replication, never local or sync
region.put( space, ts );
if ( stats ) {
factory.getStatisticsImplementor().updateTimestampsCachePut();
}
}
}
@SuppressWarnings({"UnnecessaryBoxing"})
@SuppressWarnings({"UnnecessaryBoxing"})
public void invalidate(Serializable[] spaces) throws CacheException {
readWriteLock.writeLock().lock();
final boolean debug = LOG.isDebugEnabled();
final boolean stats = factory != null && factory.getStatistics().isStatisticsEnabled();
try {
Long ts = region.nextTimestamp();
for (Serializable space : spaces) {
final Long ts = region.nextTimestamp();
for (Serializable space : spaces) {
if ( debug ) {
LOG.debugf( "Invalidating space [%s], timestamp: %s", space, ts );
//put() has nowait semantics, is this really appropriate?
//note that it needs to be async replication, never local or sync
region.put( space, ts );
if ( factory != null && factory.getStatistics().isStatisticsEnabled() ) {
factory.getStatisticsImplementor().updateTimestampsCachePut();
}
}
}
finally {
readWriteLock.writeLock().unlock();
//put() has nowait semantics, is this really appropriate?
//note that it needs to be async replication, never local or sync
region.put( space, ts );
if ( stats ) {
factory.getStatisticsImplementor().updateTimestampsCachePut();
}
}
}
@SuppressWarnings({"unchecked", "UnnecessaryUnboxing"})
public boolean isUpToDate(Set spaces, Long timestamp) throws HibernateException {
readWriteLock.readLock().lock();
final boolean debug = LOG.isDebugEnabled();
final boolean stats = factory != null && factory.getStatistics().isStatisticsEnabled();
try {
for ( Serializable space : (Set<Serializable>) spaces ) {
Long lastUpdate = (Long) region.get( space );
if ( lastUpdate == null ) {
if ( factory != null && factory.getStatistics().isStatisticsEnabled() ) {
factory.getStatisticsImplementor().updateTimestampsCacheMiss();
}
//the last update timestamp was lost from the cache
//(or there were no updates since startup!)
//updateTimestamps.put( space, new Long( updateTimestamps.nextTimestamp() ) );
//result = false; // safer
for ( Serializable space : (Set<Serializable>) spaces ) {
Long lastUpdate = (Long) region.get( space );
if ( lastUpdate == null ) {
if ( stats ) {
factory.getStatisticsImplementor().updateTimestampsCacheMiss();
}
else {
if ( LOG.isDebugEnabled() ) {
LOG.debugf(
"[%s] last update timestamp: %s",
space,
lastUpdate + ", result set timestamp: " + timestamp
);
}
if ( factory != null && factory.getStatistics().isStatisticsEnabled() ) {
factory.getStatisticsImplementor().updateTimestampsCacheHit();
}
if ( lastUpdate >= timestamp ) return false;
//the last update timestamp was lost from the cache
//(or there were no updates since startup!)
//updateTimestamps.put( space, new Long( updateTimestamps.nextTimestamp() ) );
//result = false; // safer
}
else {
if ( debug ) {
LOG.debugf(
"[%s] last update timestamp: %s",
space,
lastUpdate + ", result set timestamp: " + timestamp
);
}
if ( stats ) {
factory.getStatisticsImplementor().updateTimestampsCacheHit();
}
if ( lastUpdate >= timestamp ) {
return false;
}
}
return true;
}
finally {
readWriteLock.readLock().unlock();
}
return true;
}
public void clear() throws CacheException {