Package one.microstream.memory.sun

Class JdkMemoryAccessor

java.lang.Object

one.microstream.memory.sun.JdkMemoryAccessor

All Implemented Interfaces:

MemoryAccessor, MemorySizeProperties

public final class JdkMemoryAccessor
extends Object
implements MemoryAccessor, MemorySizeProperties

Nested Class Summary

Nested classes/interfaces inherited from interface one.microstream.memory.MemorySizeProperties

MemorySizeProperties.Unsupported

Constructor Summary

Constructors

Constructor	Description
JdkMemoryAccessor()

Method Summary

Modifier and Type	Method	Description
long	allocateMemory(long bytes)
byte[]	asByteArray(long value)
byte[]	asByteArray(long[] values)
long	byteSizeArray_boolean(long elementCount)
long	byteSizeArray_byte(long elementCount)
long	byteSizeArray_char(long elementCount)
long	byteSizeArray_double(long elementCount)
long	byteSizeArray_float(long elementCount)
long	byteSizeArray_int(long elementCount)
long	byteSizeArray_long(long elementCount)
long	byteSizeArray_short(long elementCount)
long	byteSizeArrayObject(long elementCount)
int	byteSizeFieldValue(Class<?> type)
int	byteSizeInstance(Class<?> type)
int	byteSizeObjectHeader(Class<?> type)
int	byteSizeReference()
void	copyArrayToAddress(boolean[] array, long targetAddress)
void	copyArrayToAddress(byte[] array, long targetAddress)
void	copyArrayToAddress(char[] array, long targetAddress)
void	copyArrayToAddress(double[] array, long targetAddress)
void	copyArrayToAddress(float[] array, long targetAddress)
void	copyArrayToAddress(int[] array, long targetAddress)
void	copyArrayToAddress(long[] array, long targetAddress)
void	copyArrayToAddress(short[] array, long targetAddress)
void	copyRange(long sourceAddress, long targetAddress, long length)
void	copyRangeToArray(long sourceAddress, boolean[] target)
void	copyRangeToArray(long sourceAddress, byte[] target)
void	copyRangeToArray(long sourceAddress, char[] target)
void	copyRangeToArray(long sourceAddress, double[] target)
void	copyRangeToArray(long sourceAddress, float[] target)
void	copyRangeToArray(long sourceAddress, int[] target)
void	copyRangeToArray(long sourceAddress, long[] target)
void	copyRangeToArray(long sourceAddress, short[] target)
boolean	deallocateDirectByteBuffer(ByteBuffer directBuffer)
void	ensureClassInitialized(Class<?> c)
void	ensureClassInitialized(Class<?> c, Iterable<Field> usedFields)	Uses the passed fields if required by the implementation.
void	fillMemory(long address, long length, byte value)
void	freeMemory(long address)
boolean	get_boolean(long address)
boolean	get_boolean(Object instance, long offset)
byte	get_byte(long address)
byte	get_byte(Object instance, long offset)
char	get_char(long address)
char	get_char(Object instance, long offset)
double	get_double(long address)
double	get_double(Object instance, long offset)
float	get_float(long address)
float	get_float(Object instance, long offset)
int	get_int(long address)
int	get_int(Object instance, long offset)
long	get_long(long address)
long	get_long(Object instance, long offset)
short	get_short(long address)
short	get_short(Object instance, long offset)
long	getDirectByteBufferAddress(ByteBuffer directBuffer)
Object	getObject(Object instance, long offset)
ByteBuffer	guaranteeDirectByteBuffer(ByteBuffer directBuffer)
void	guaranteeUsability()	Guarantees the full usability of this class by validating if all functionality is usable.
<T> T	instantiateBlank(Class<T> c)
boolean	isDirectByteBuffer(ByteBuffer byteBuffer)
static JdkMemoryAccessor	New()
long	objectFieldOffset(Class<?> objectClass, Field field)	Similar to MemoryAccessor.objectFieldOffset(Field), but with the specific object class. The difference is that the actual object's class is not the declaring class of its fields if it only extends another class but does not declare an object field itself.
long	objectFieldOffset(Field field)	Returns an unspecified, abstract "offset" of the passed Field to specify a generic access of the field's value for an instance of its declaring class that can be used with object-based methods like MemoryAccessor.set_int(Object,long,int).
long[]	objectFieldOffsets(Class<?> objectClass, Field... fields)	Array alias vor #objectFieldOffset(Class, Field).
long[]	objectFieldOffsets(Field... fields)	Array alias vor #objectFieldOffset(Field).
int	pageSize()	Returns the system's memory "page size" (whatever that may be exactely for a given system).
long	reallocateMemory(long address, long bytes)
void	set_boolean(long address, boolean value)
void	set_boolean(Object instance, long offset, boolean value)
void	set_booleanInBytes(byte[] bytes, int index, boolean value)
void	set_byte(long address, byte value)
void	set_byte(Object instance, long offset, byte value)
void	set_byteInBytes(byte[] bytes, int index, byte value)
void	set_char(long address, char value)
void	set_char(Object instance, long offset, char value)
void	set_charInBytes(byte[] bytes, int index, char value)
void	set_double(long address, double value)
void	set_double(Object instance, long offset, double value)
void	set_doubleInBytes(byte[] bytes, int index, double value)
void	set_float(long address, float value)
void	set_float(Object instance, long offset, float value)
void	set_floatInBytes(byte[] bytes, int index, float value)
void	set_int(long address, int value)
void	set_int(Object instance, long offset, int value)
void	set_intInBytes(byte[] bytes, int index, int value)
void	set_long(long address, long value)
void	set_long(Object instance, long offset, long value)
void	set_longInBytes(byte[] bytes, int index, long value)
void	set_short(long address, short value)
void	set_short(Object instance, long offset, short value)
void	set_shortInBytes(byte[] bytes, int index, short value)
void	setObject(Object instance, long offset, Object value)

Methods inherited from class java.lang.Object

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

Methods inherited from interface one.microstream.memory.MemoryAccessor

isReversing, objectFieldOffsets, objectFieldOffsets, toReversing

Methods inherited from interface one.microstream.memory.MemorySizeProperties

byteSizeFieldValue

Constructor Detail

JdkMemoryAccessor

public JdkMemoryAccessor()

Method Detail

New

public static JdkMemoryAccessor New()

guaranteeUsability

public final void guaranteeUsability()

Description copied from interface: MemoryAccessor

Guarantees the full usability of this class by validating if all functionality is usable.

Specified by:

guaranteeUsability in interface MemoryAccessor

getDirectByteBufferAddress

public final long getDirectByteBufferAddress(ByteBuffer directBuffer)

Specified by:

getDirectByteBufferAddress in interface MemoryAccessor

deallocateDirectByteBuffer

public final boolean deallocateDirectByteBuffer(ByteBuffer directBuffer)

Specified by:

deallocateDirectByteBuffer in interface MemoryAccessor

isDirectByteBuffer

public final boolean isDirectByteBuffer(ByteBuffer byteBuffer)

Specified by:

isDirectByteBuffer in interface MemoryAccessor

guaranteeDirectByteBuffer

public final ByteBuffer guaranteeDirectByteBuffer(ByteBuffer directBuffer)

Specified by:

guaranteeDirectByteBuffer in interface MemoryAccessor

allocateMemory

public final long allocateMemory(long bytes)

Specified by:

allocateMemory in interface MemoryAccessor

reallocateMemory

public final long reallocateMemory(long address,
                                   long bytes)

Specified by:

reallocateMemory in interface MemoryAccessor

freeMemory

public final void freeMemory(long address)

Specified by:

freeMemory in interface MemoryAccessor

fillMemory

public final void fillMemory(long address,
                             long length,
                             byte value)

Specified by:

fillMemory in interface MemoryAccessor

get_byte

public final byte get_byte(long address)

Specified by:

get_byte in interface MemoryAccessor

get_boolean

public final boolean get_boolean(long address)

Specified by:

get_boolean in interface MemoryAccessor

get_short

public final short get_short(long address)

Specified by:

get_short in interface MemoryAccessor

get_char

public final char get_char(long address)

Specified by:

get_char in interface MemoryAccessor

get_int

public final int get_int(long address)

Specified by:

get_int in interface MemoryAccessor

get_float

public final float get_float(long address)

Specified by:

get_float in interface MemoryAccessor

get_long

public final long get_long(long address)

Specified by:

get_long in interface MemoryAccessor

get_double

public final double get_double(long address)

Specified by:

get_double in interface MemoryAccessor

get_byte

public final byte get_byte(Object instance,
                           long offset)

Specified by:

get_byte in interface MemoryAccessor

get_boolean

public final boolean get_boolean(Object instance,
                                 long offset)

Specified by:

get_boolean in interface MemoryAccessor

get_short

public final short get_short(Object instance,
                             long offset)

Specified by:

get_short in interface MemoryAccessor

get_char

public final char get_char(Object instance,
                           long offset)

Specified by:

get_char in interface MemoryAccessor

get_int

public final int get_int(Object instance,
                         long offset)

Specified by:

get_int in interface MemoryAccessor

get_float

public final float get_float(Object instance,
                             long offset)

Specified by:

get_float in interface MemoryAccessor

get_long

public final long get_long(Object instance,
                           long offset)

Specified by:

get_long in interface MemoryAccessor

get_double

public final double get_double(Object instance,
                               long offset)

Specified by:

get_double in interface MemoryAccessor

getObject

public final Object getObject(Object instance,
                              long offset)

Specified by:

getObject in interface MemoryAccessor

set_byte

public final void set_byte(long address,
                           byte value)

Specified by:

set_byte in interface MemoryAccessor

set_boolean

public final void set_boolean(long address,
                              boolean value)

Specified by:

set_boolean in interface MemoryAccessor

set_short

public void set_short(long address,
                      short value)

Specified by:

set_short in interface MemoryAccessor

set_char

public final void set_char(long address,
                           char value)

Specified by:

set_char in interface MemoryAccessor

set_int

public final void set_int(long address,
                          int value)

Specified by:

set_int in interface MemoryAccessor

set_float

public final void set_float(long address,
                            float value)

Specified by:

set_float in interface MemoryAccessor

set_long

public final void set_long(long address,
                           long value)

Specified by:

set_long in interface MemoryAccessor

set_double

public final void set_double(long address,
                             double value)

Specified by:

set_double in interface MemoryAccessor

set_byte

public final void set_byte(Object instance,
                           long offset,
                           byte value)

Specified by:

set_byte in interface MemoryAccessor

set_boolean

public final void set_boolean(Object instance,
                              long offset,
                              boolean value)

Specified by:

set_boolean in interface MemoryAccessor

set_short

public final void set_short(Object instance,
                            long offset,
                            short value)

Specified by:

set_short in interface MemoryAccessor

set_char

public final void set_char(Object instance,
                           long offset,
                           char value)

Specified by:

set_char in interface MemoryAccessor

set_int

public final void set_int(Object instance,
                          long offset,
                          int value)

Specified by:

set_int in interface MemoryAccessor

set_float

public final void set_float(Object instance,
                            long offset,
                            float value)

Specified by:

set_float in interface MemoryAccessor

set_long

public final void set_long(Object instance,
                           long offset,
                           long value)

Specified by:

set_long in interface MemoryAccessor

set_double

public final void set_double(Object instance,
                             long offset,
                             double value)

Specified by:

set_double in interface MemoryAccessor

setObject

public final void setObject(Object instance,
                            long offset,
                            Object value)

Specified by:

setObject in interface MemoryAccessor

set_byteInBytes

public final void set_byteInBytes(byte[] bytes,
                                  int index,
                                  byte value)

Specified by:

set_byteInBytes in interface MemoryAccessor

set_booleanInBytes

public final void set_booleanInBytes(byte[] bytes,
                                     int index,
                                     boolean value)

Specified by:

set_booleanInBytes in interface MemoryAccessor

set_shortInBytes

public final void set_shortInBytes(byte[] bytes,
                                   int index,
                                   short value)

Specified by:

set_shortInBytes in interface MemoryAccessor

set_charInBytes

public final void set_charInBytes(byte[] bytes,
                                  int index,
                                  char value)

Specified by:

set_charInBytes in interface MemoryAccessor

set_intInBytes

public final void set_intInBytes(byte[] bytes,
                                 int index,
                                 int value)

Specified by:

set_intInBytes in interface MemoryAccessor

set_floatInBytes

public final void set_floatInBytes(byte[] bytes,
                                   int index,
                                   float value)

Specified by:

set_floatInBytes in interface MemoryAccessor

set_longInBytes

public final void set_longInBytes(byte[] bytes,
                                  int index,
                                  long value)

Specified by:

set_longInBytes in interface MemoryAccessor

set_doubleInBytes

public final void set_doubleInBytes(byte[] bytes,
                                    int index,
                                    double value)

Specified by:

set_doubleInBytes in interface MemoryAccessor

copyRange

public final void copyRange(long sourceAddress,
                            long targetAddress,
                            long length)

Specified by:

copyRange in interface MemoryAccessor

copyRangeToArray

public final void copyRangeToArray(long sourceAddress,
                                   byte[] target)

Specified by:

copyRangeToArray in interface MemoryAccessor

copyRangeToArray

public final void copyRangeToArray(long sourceAddress,
                                   boolean[] target)

Specified by:

copyRangeToArray in interface MemoryAccessor

copyRangeToArray

public final void copyRangeToArray(long sourceAddress,
                                   short[] target)

Specified by:

copyRangeToArray in interface MemoryAccessor

copyRangeToArray

public final void copyRangeToArray(long sourceAddress,
                                   char[] target)

Specified by:

copyRangeToArray in interface MemoryAccessor

copyRangeToArray

public final void copyRangeToArray(long sourceAddress,
                                   int[] target)

Specified by:

copyRangeToArray in interface MemoryAccessor

copyRangeToArray

public final void copyRangeToArray(long sourceAddress,
                                   float[] target)

Specified by:

copyRangeToArray in interface MemoryAccessor

copyRangeToArray

public final void copyRangeToArray(long sourceAddress,
                                   long[] target)

Specified by:

copyRangeToArray in interface MemoryAccessor

copyRangeToArray

public final void copyRangeToArray(long sourceAddress,
                                   double[] target)

Specified by:

copyRangeToArray in interface MemoryAccessor

copyArrayToAddress

public final void copyArrayToAddress(byte[] array,
                                     long targetAddress)

Specified by:

copyArrayToAddress in interface MemoryAccessor

copyArrayToAddress

public final void copyArrayToAddress(boolean[] array,
                                     long targetAddress)

Specified by:

copyArrayToAddress in interface MemoryAccessor

copyArrayToAddress

public final void copyArrayToAddress(short[] array,
                                     long targetAddress)

Specified by:

copyArrayToAddress in interface MemoryAccessor

copyArrayToAddress

public final void copyArrayToAddress(char[] array,
                                     long targetAddress)

Specified by:

copyArrayToAddress in interface MemoryAccessor

copyArrayToAddress

public final void copyArrayToAddress(int[] array,
                                     long targetAddress)

Specified by:

copyArrayToAddress in interface MemoryAccessor

copyArrayToAddress

public final void copyArrayToAddress(float[] array,
                                     long targetAddress)

Specified by:

copyArrayToAddress in interface MemoryAccessor

copyArrayToAddress

public final void copyArrayToAddress(long[] array,
                                     long targetAddress)

Specified by:

copyArrayToAddress in interface MemoryAccessor

copyArrayToAddress

public final void copyArrayToAddress(double[] array,
                                     long targetAddress)

Specified by:

copyArrayToAddress in interface MemoryAccessor

asByteArray

public final byte[] asByteArray(long[] values)

Specified by:

asByteArray in interface MemoryAccessor

asByteArray

public final byte[] asByteArray(long value)

Specified by:

asByteArray in interface MemoryAccessor

objectFieldOffset

public final long objectFieldOffset(Field field)

Description copied from interface: MemoryAccessor

Returns an unspecified, abstract "offset" of the passed Field to specify a generic access of the field's value for an instance of its declaring class that can be used with object-based methods like MemoryAccessor.set_int(Object,long,int). Whether that offset is an actual low-level memory offset relative to an instance' field offset base or simply an index of the passed field in its declaring class' list of fields, is implementation-specific.

Specified by:

objectFieldOffset in interface MemoryAccessor

Parameters:

field - the Field whose abstract offset shall be determined.

Returns:

the passed Field's abstract offset.

objectFieldOffsets

public final long[] objectFieldOffsets(Field... fields)

Description copied from interface: MemoryAccessor

Array alias vor #objectFieldOffset(Field).

Specified by:

objectFieldOffsets in interface MemoryAccessor

objectFieldOffset

public final long objectFieldOffset(Class<?> objectClass,
                                    Field field)

Description copied from interface: MemoryAccessor

Similar to MemoryAccessor.objectFieldOffset(Field), but with the specific object class.
The difference is that the actual object's class is not the declaring class of its fields if it only extends another class but does not declare an object field itself.

Specified by:

objectFieldOffset in interface MemoryAccessor

Returns:

objectFieldOffsets

public final long[] objectFieldOffsets(Class<?> objectClass,
                                       Field... fields)

Description copied from interface: MemoryAccessor

Array alias vor #objectFieldOffset(Class, Field).

Specified by:

objectFieldOffsets in interface MemoryAccessor

ensureClassInitialized

public final void ensureClassInitialized(Class<?> c)

Specified by:

ensureClassInitialized in interface MemoryAccessor

ensureClassInitialized

public final void ensureClassInitialized(Class<?> c,
                                         Iterable<Field> usedFields)

Description copied from interface: MemoryAccessor

Uses the passed fields if required by the implementation. If not, this method behaves exactely like MemoryAccessor.ensureClassInitialized(Class).

Specified by:

ensureClassInitialized in interface MemoryAccessor

instantiateBlank

public final <T> T instantiateBlank(Class<T> c)
                             throws InstantiationRuntimeException

Specified by:

instantiateBlank in interface MemoryAccessor

Throws:

InstantiationRuntimeException

pageSize

public final int pageSize()

Description copied from interface: MemorySizeProperties

Returns the system's memory "page size" (whatever that may be exactely for a given system). Use with care (and the dependency to a system value in mind!).

Specified by:

pageSize in interface MemorySizeProperties

Returns:

the system's memory "page size".

byteSizeReference

public final int byteSizeReference()

Specified by:

byteSizeReference in interface MemorySizeProperties

byteSizeInstance

public final int byteSizeInstance(Class<?> type)

Specified by:

byteSizeInstance in interface MemorySizeProperties

byteSizeObjectHeader

public final int byteSizeObjectHeader(Class<?> type)

Specified by:

byteSizeObjectHeader in interface MemorySizeProperties

byteSizeFieldValue

public final int byteSizeFieldValue(Class<?> type)

Specified by:

byteSizeFieldValue in interface MemorySizeProperties

byteSizeArray_byte

public final long byteSizeArray_byte(long elementCount)

Specified by:

byteSizeArray_byte in interface MemorySizeProperties

byteSizeArray_boolean

public final long byteSizeArray_boolean(long elementCount)

Specified by:

byteSizeArray_boolean in interface MemorySizeProperties

byteSizeArray_short

public final long byteSizeArray_short(long elementCount)

Specified by:

byteSizeArray_short in interface MemorySizeProperties

byteSizeArray_char

public final long byteSizeArray_char(long elementCount)

Specified by:

byteSizeArray_char in interface MemorySizeProperties

byteSizeArray_int

public final long byteSizeArray_int(long elementCount)

Specified by:

byteSizeArray_int in interface MemorySizeProperties

byteSizeArray_float

public final long byteSizeArray_float(long elementCount)

Specified by:

byteSizeArray_float in interface MemorySizeProperties

byteSizeArray_long

public final long byteSizeArray_long(long elementCount)

Specified by:

byteSizeArray_long in interface MemorySizeProperties

byteSizeArray_double

public final long byteSizeArray_double(long elementCount)

Specified by:

byteSizeArray_double in interface MemorySizeProperties

byteSizeArrayObject

public final long byteSizeArrayObject(long elementCount)

Specified by:

byteSizeArrayObject in interface MemorySizeProperties