net.openhft.chronicle.bytes.internal

Class ChunkedMappedFile

java.lang.Object

net.openhft.chronicle.core.io.AbstractReferenceCounted

net.openhft.chronicle.core.io.AbstractCloseableReferenceCounted

net.openhft.chronicle.bytes.MappedFile

net.openhft.chronicle.bytes.internal.ChunkedMappedFile

All Implemented Interfaces:

Closeable, AutoCloseable, net.openhft.chronicle.core.io.ManagedCloseable, net.openhft.chronicle.core.io.QueryCloseable, net.openhft.chronicle.core.io.ReferenceCounted, net.openhft.chronicle.core.io.ReferenceCountedTracer, net.openhft.chronicle.core.io.ReferenceOwner

public class ChunkedMappedFile
extends MappedFile

A memory mapped files which can be randomly accessed in chunks. It has overlapping regions to avoid wasting bytes at the end of chunks.

Field Summary

Fields inherited from class net.openhft.chronicle.bytes.MappedFile

newChunkListener

Fields inherited from class net.openhft.chronicle.core.io.AbstractReferenceCounted

referenceCounted, WARN_COUNT, WARN_NS

Fields inherited from interface net.openhft.chronicle.core.io.ReferenceOwner

INIT, TMP

Constructor Summary

Constructors

Constructor and Description
ChunkedMappedFile(@NotNull File file, @NotNull RandomAccessFile raf, long chunkSize, long overlapSize, long capacity, boolean readOnly)

Method Summary

Modifier and Type	Method and Description
@NotNull MappedBytesStore	acquireByteStore(net.openhft.chronicle.core.io.ReferenceOwner owner, long position, BytesStore oldByteStore, @NotNull MappedBytesStoreFactory mappedBytesStoreFactory)
long	actualSize()
long	capacity()
long	chunkCount()
void	chunkCount(long[] chunkCount)
long	chunkSize()
MappedBytes	createBytesFor()
protected void	finalize() Deprecated. as per https://github.com/OpenHFT/Chronicle-Bytes/issues/348
NewChunkListener	getNewChunkListener()
FileLock	lock(long position, long size, boolean shared) Calls lock on the underlying file channel
long	overlapSize()
protected void	performRelease()
@NotNull RandomAccessFile	raf()
@NotNull String	referenceCounts()
void	setNewChunkListener(NewChunkListener listener)
protected boolean	threadSafetyCheck(boolean isUsed)
FileLock	tryLock(long position, long size, boolean shared) Calls tryLock on the underlying file channel
static void	warmup()

Methods inherited from class net.openhft.chronicle.bytes.MappedFile

acquireBytesForRead, acquireBytesForRead, acquireBytesForWrite, acquireBytesForWrite, acquireByteStore, acquireByteStore, canReleaseInBackground, file, internalizedToken, mappedFile, mappedFile, mappedFile, mappedFile, mappedFile, mappedFile, of, ofSingle, readOnly, readOnly

Methods inherited from class net.openhft.chronicle.core.io.AbstractCloseableReferenceCounted

backgroundPerformRelease, close, isClosed, release, releaseLast, reserve, reserveTransfer, setClosed, setClosing, throwExceptionIfClosed, throwExceptionIfClosedInSetter, tryReserve

Methods inherited from class net.openhft.chronicle.core.io.AbstractReferenceCounted

assertReferencesReleased, clearUsedByThread, createdHere, disableReferenceTracing, enableReferenceTracing, refCount, referenceId, reservedBy, throwExceptionIfNotReleased, throwExceptionIfReleased, toString, unmonitor, warnAndReleaseIfNotReleased

Methods inherited from class java.lang.Object

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

Methods inherited from interface net.openhft.chronicle.core.io.ManagedCloseable

createdHere, warnAndCloseIfNotClosed

Methods inherited from interface net.openhft.chronicle.core.io.Closeable

closeQuietly, closeQuietly

Methods inherited from interface net.openhft.chronicle.core.io.QueryCloseable

isClosing

Methods inherited from interface net.openhft.chronicle.core.io.ReferenceCountedTracer

onReleased

Methods inherited from interface net.openhft.chronicle.core.io.ReferenceCounted

releaseLast

Methods inherited from interface net.openhft.chronicle.core.io.ReferenceOwner

referenceName, temporary

Constructor Detail

ChunkedMappedFile

public ChunkedMappedFile(@NotNull
                         @NotNull File file,
                         @NotNull
                         @NotNull RandomAccessFile raf,
                         long chunkSize,
                         long overlapSize,
                         long capacity,
                         boolean readOnly)
                  throws net.openhft.chronicle.core.io.IORuntimeException

Throws:

net.openhft.chronicle.core.io.IORuntimeException

Method Detail

warmup

public static void warmup()

acquireByteStore

@NotNull
public @NotNull MappedBytesStore acquireByteStore(net.openhft.chronicle.core.io.ReferenceOwner owner,
                                                           long position,
                                                           BytesStore oldByteStore,
                                                           @NotNull
                                                           @NotNull MappedBytesStoreFactory mappedBytesStoreFactory)
                                                    throws IOException,
                                                           IllegalArgumentException,
                                                           IllegalStateException

Specified by:

acquireByteStore in class MappedFile

Throws:

IOException

IllegalArgumentException

IllegalStateException

performRelease

protected void performRelease()

Specified by:

performRelease in class net.openhft.chronicle.core.io.AbstractReferenceCounted

referenceCounts

@NotNull
public @NotNull String referenceCounts()

Specified by:

referenceCounts in class MappedFile

capacity

public long capacity()

Specified by:

capacity in class MappedFile

chunkSize

public long chunkSize()

Specified by:

chunkSize in class MappedFile

overlapSize

public long overlapSize()

Specified by:

overlapSize in class MappedFile

getNewChunkListener

public NewChunkListener getNewChunkListener()

Overrides:

getNewChunkListener in class MappedFile

setNewChunkListener

public void setNewChunkListener(NewChunkListener listener)

Overrides:

setNewChunkListener in class MappedFile

actualSize

public long actualSize()
                throws net.openhft.chronicle.core.io.IORuntimeException,
                       IllegalStateException

Specified by:

actualSize in class MappedFile

Throws:

net.openhft.chronicle.core.io.IORuntimeException

IllegalStateException

raf

@NotNull
public @NotNull RandomAccessFile raf()

Specified by:

raf in class MappedFile

finalize

@Deprecated
protected void finalize()
                             throws Throwable

Deprecated. as per https://github.com/OpenHFT/Chronicle-Bytes/issues/348

Overrides:

finalize in class MappedFile

Throws:

Throwable

threadSafetyCheck

protected boolean threadSafetyCheck(boolean isUsed)

Overrides:

threadSafetyCheck in class MappedFile

lock

public FileLock lock(long position,
                     long size,
                     boolean shared)
              throws IOException

Calls lock on the underlying file channel

Specified by:

lock in class MappedFile

Throws:

IOException

tryLock

public FileLock tryLock(long position,
                        long size,
                        boolean shared)
                 throws IOException

Calls tryLock on the underlying file channel

Specified by:

tryLock in class MappedFile

Throws:

IOException

chunkCount

public long chunkCount()

Specified by:

chunkCount in class MappedFile

chunkCount

public void chunkCount(long[] chunkCount)

Specified by:

chunkCount in class MappedFile

createBytesFor

public MappedBytes createBytesFor()

Specified by:

createBytesFor in class MappedFile