org.apache.crail.memory

Class BufferCache

java.lang.Object

org.apache.crail.memory.BufferCache

All Implemented Interfaces:

CrailBufferCache, CrailStatistics.StatisticsProvider

Direct Known Subclasses:

MappedBufferCache

public abstract class BufferCache
extends Object
implements CrailStatistics.StatisticsProvider, CrailBufferCache

Constructor Summary

Constructors

Constructor and Description
BufferCache()

Method Summary

Modifier and Type	Method and Description
CrailBuffer	allocateBuffer()
abstract CrailBuffer	allocateRegion()
void	close()
static BufferCache	createInstance(String name)
void	freeBuffer(CrailBuffer buffer)
void	mergeStatistics(CrailStatistics.StatisticsProvider provider)
String	printStatistics()
String	providerName()
void	putBufferInternal(CrailBuffer buffer)
void	resetStatistics()

Methods inherited from class java.lang.Object

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

Constructor Detail

BufferCache

public BufferCache()
            throws IOException

Throws:

IOException

Method Detail

allocateRegion

public abstract CrailBuffer allocateRegion()
                                    throws IOException

Throws:

IOException

providerName

public String providerName()

Specified by:

providerName in interface CrailStatistics.StatisticsProvider

printStatistics

public String printStatistics()

Specified by:

printStatistics in interface CrailStatistics.StatisticsProvider

resetStatistics

public void resetStatistics()

Specified by:

resetStatistics in interface CrailStatistics.StatisticsProvider

mergeStatistics

public void mergeStatistics(CrailStatistics.StatisticsProvider provider)

Specified by:

mergeStatistics in interface CrailStatistics.StatisticsProvider

allocateBuffer

public CrailBuffer allocateBuffer()
                           throws IOException

Specified by:

allocateBuffer in interface CrailBufferCache

Throws:

IOException

freeBuffer

public void freeBuffer(CrailBuffer buffer)
                throws IOException

Specified by:

freeBuffer in interface CrailBufferCache

Throws:

IOException

putBufferInternal

public void putBufferInternal(CrailBuffer buffer)
                       throws IOException

Throws:

IOException

close

public void close()

createInstance

public static BufferCache createInstance(String name)
                                  throws Exception

Throws:

Exception