Package one.nio.mem

Class SharedMemoryFixedMap<K,V>

java.lang.Object

one.nio.mem.OffheapMap<K,V>

one.nio.mem.SharedMemoryMap<K,V>

one.nio.mem.SharedMemoryFixedMap<K,V>

All Implemented Interfaces:

OffheapMapMXBean, SharedMemoryMapMXBean

public abstract class SharedMemoryFixedMap<K,V>
extends SharedMemoryMap<K,V>

Nested Class Summary

Nested classes/interfaces inherited from class one.nio.mem.OffheapMap

OffheapMap.BasicCleanup, OffheapMap.Record<K,V>, OffheapMap.SamplingCleanup, OffheapMap.Visitor<K,V>, OffheapMap.WritableRecord<K,V>, OffheapMap.WritableVisitor<K,V>

Field Summary

Fields

Modifier and Type	Field	Description
protected final FixedSizeAllocator	allocator
protected static final long	ALLOCATOR_HEAD_OFFSET
protected static final long	ALLOCATOR_SIZE_OFFSET
protected final int	valueSize

Fields inherited from class one.nio.mem.SharedMemoryMap

BASE_OFFSET, CAPACITY_OFFSET, className, CUSTOM_DATA_OFFSET, CUSTOM_SIZE_OFFSET, MAP_OFFSET, MAX_CUSTOM_DATA_SIZE, mmap, name, serializer, SIGNATURE_CLEAR, SIGNATURE_DIRTY, SIGNATURE_LEGACY, SIGNATURE_OFFSET, TIMESTAMP_OFFSET, UID_OFFSET

Fields inherited from class one.nio.mem.OffheapMap

byteArrayOffset, capacity, cleanupInterval, cleanupThread, cleanupThreshold, CONCURRENCY_LEVEL, count, expirations, HASH_OFFSET, HEADER_SIZE, locks, lockWaitTime, log, mapBase, maxSamples, MB, minTimeToLive, NEXT_OFFSET, TIME_OFFSET, timeToLive, unsafe

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	SharedMemoryFixedMap(int capacity, String fileName, long fileSize, int valueSize, long expirationTime)
protected	SharedMemoryFixedMap(String fileName, long fileSize, int valueSize)
protected	SharedMemoryFixedMap(String fileName, long fileSize, int valueSize, long expirationTime)

Method Summary

Modifier and Type	Method	Description
protected long	allocateEntry(K key, long hashCode, int size)
protected void	closeInternal()
protected void	createAllocator(long startAddress, long totalMemory)
protected void	destroyEntry(long entry)
protected static int	getEntrySize(int valueSize)
long	getFreeMemory()
long	getTotalMemory()
long	getUsedMemory()
protected void	loadSchema()
protected void	relocate(long delta)
protected int	sizeOf(long entry)
protected int	sizeOf(V value)
protected void	storeSchema()

Methods inherited from class one.nio.mem.SharedMemoryMap

convert, entriesToClean, getCustomData, getHeader, headerSize, needCleanup, setCustomData, setHeader, setSerializer, setSerializer, setValueAt, valueAt

Methods inherited from class one.nio.mem.OffheapMap

bucketFor, clear, close, equalsAt, get, getCapacity, getCleanupInterval, getCleanupThreshold, getCount, getExpirations, getLockWaitTime, getMaxSamples, getMinTimeToLive, getTimeToLive, hashCode, isExpired, iterate, iterate, iterate, iterate, iterate, iterate, keyAt, lockFor, lockRecordForRead, lockRecordForRead, lockRecordForWrite, lockRecordForWrite, put, putIfAbsent, remove, removeExpired, reuseEntry, setCleanupInterval, setCleanupThreshold, setLockWaitTime, setMaxSamples, setMinTimeToLive, setTimeAt, setTimeAt, setTimeToLive, shouldCleanup, timeAt, touch

Methods inherited from class java.lang.Object

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

Methods inherited from interface one.nio.mem.OffheapMapMXBean

getCapacity, getCleanupInterval, getCleanupThreshold, getCount, getExpirations, getLockWaitTime, getMaxSamples, getMinTimeToLive, getTimeToLive, setCleanupInterval, setCleanupThreshold, setLockWaitTime, setMaxSamples, setMinTimeToLive, setTimeToLive

Field Details

ALLOCATOR_SIZE_OFFSET

protected static final long ALLOCATOR_SIZE_OFFSET

See Also:

• Constant Field Values

ALLOCATOR_HEAD_OFFSET

protected static final long ALLOCATOR_HEAD_OFFSET

See Also:

• Constant Field Values

valueSize

protected final int valueSize

allocator

protected final FixedSizeAllocator allocator

Constructor Details

SharedMemoryFixedMap

protected SharedMemoryFixedMap(String fileName,
 long fileSize,
 int valueSize)
                        throws IOException

Throws:

IOException

SharedMemoryFixedMap

protected SharedMemoryFixedMap(String fileName,
 long fileSize,
 int valueSize,
 long expirationTime)
                        throws IOException

Throws:

IOException

SharedMemoryFixedMap

protected SharedMemoryFixedMap(int capacity,
 String fileName,
 long fileSize,
 int valueSize,
 long expirationTime)
                        throws IOException

Throws:

IOException

Method Details

getEntrySize

protected static int getEntrySize(int valueSize)

closeInternal

protected void closeInternal()

Overrides:

closeInternal in class SharedMemoryMap<K,V>

createAllocator

protected void createAllocator(long startAddress,
 long totalMemory)

Overrides:

createAllocator in class SharedMemoryMap<K,V>

loadSchema

protected void loadSchema()

Overrides:

loadSchema in class SharedMemoryMap<K,V>

storeSchema

protected void storeSchema()

Overrides:

storeSchema in class SharedMemoryMap<K,V>

relocate

protected void relocate(long delta)

Overrides:

relocate in class SharedMemoryMap<K,V>

allocateEntry

protected long allocateEntry(K key,
 long hashCode,
 int size)

Overrides:

allocateEntry in class SharedMemoryMap<K,V>

destroyEntry

protected void destroyEntry(long entry)

Overrides:

destroyEntry in class SharedMemoryMap<K,V>

sizeOf

protected int sizeOf(long entry)

Overrides:

sizeOf in class SharedMemoryMap<K,V>

sizeOf

protected int sizeOf(V value)

Overrides:

sizeOf in class SharedMemoryMap<K,V>

getTotalMemory

public long getTotalMemory()

Specified by:

getTotalMemory in interface SharedMemoryMapMXBean

Overrides:

getTotalMemory in class SharedMemoryMap<K,V>

getFreeMemory

public long getFreeMemory()

Specified by:

getFreeMemory in interface SharedMemoryMapMXBean

Overrides:

getFreeMemory in class SharedMemoryMap<K,V>

getUsedMemory

public long getUsedMemory()

Specified by:

getUsedMemory in interface SharedMemoryMapMXBean

Overrides:

getUsedMemory in class SharedMemoryMap<K,V>