Package org.apache.ignite.internal.metric

Class IoStatisticsHolderNoOp

java.lang.Object

org.apache.ignite.internal.metric.IoStatisticsHolderNoOp

All Implemented Interfaces:

IoStatisticsHolder

public class IoStatisticsHolderNoOp
extends Object
implements IoStatisticsHolder

No Operation IO statistics holder. Use in case statistics shouldn't be gathered.

Field Summary

Fields

Modifier and Type	Field	Description
static final IoStatisticsHolderNoOp	INSTANCE	No-op statistics.

Method Summary

Modifier and Type	Method	Description
long	logicalReads()
String	metricRegistryName()
long	physicalReads()
void	trackLogicalRead(long pageAddr)	Track logical read of given page.
void	trackPhysicalAndLogicalRead(long pageAddr)	Track physical and logical read of given page.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

INSTANCE

public static final IoStatisticsHolderNoOp INSTANCE

No-op statistics.

Method Details

trackLogicalRead

public void trackLogicalRead(long pageAddr)

Track logical read of given page.

Specified by:

trackLogicalRead in interface IoStatisticsHolder

Parameters:

pageAddr - Address of page.

trackPhysicalAndLogicalRead

public void trackPhysicalAndLogicalRead(long pageAddr)

Track physical and logical read of given page.

Specified by:

trackPhysicalAndLogicalRead in interface IoStatisticsHolder

Parameters:

pageAddr - start address of page.

logicalReads

public long logicalReads()

Specified by:

logicalReads in interface IoStatisticsHolder

Returns:

Number of logical reads.

physicalReads

public long physicalReads()

Specified by:

physicalReads in interface IoStatisticsHolder

Returns:

Number of physical reads.

metricRegistryName

public String metricRegistryName()

Specified by:

metricRegistryName in interface IoStatisticsHolder

Returns:

Metric registry name.