com.hazelcast.internal.memory

Interface MemoryAccessor

All Known Subinterfaces:

ConcurrentMemoryAccessor, GlobalMemoryAccessor

All Known Implementing Classes:

AlignmentAwareMemoryAccessor, StandardMemoryAccessor

public interface MemoryAccessor

Abstraction over an address space of readable and writable bytes.

Method Summary

Modifier and Type	Method and Description
void	copyFromByteArray(byte[] source, int offset, long destAddress, int length) Copies bytes from a Java byte array into this accessor's address space.
void	copyMemory(long srcAddress, long destAddress, long lengthBytes) Copies memory from given source address to given destination address as given size.
void	copyToByteArray(long srcAddress, byte[] destination, int offset, int length) Copies bytes from this accessor's address space to a Java byte array.
boolean	getBoolean(long address) Reads the boolean value from given address.
byte	getByte(long address) Reads the byte value from given address.
char	getChar(long address) Reads the char value from given address.
double	getDouble(long address) Reads the double value from given address.
float	getFloat(long address) Reads the float value from given address.
int	getInt(long address) Reads the int value from given address.
long	getLong(long address) Reads the long value from given address.
short	getShort(long address) Reads the short value from given address.
boolean	isBigEndian() Tells whether this memory accessor is big- or little-endian.
void	putBoolean(long address, boolean x) Writes the given boolean value to given address.
void	putByte(long address, byte x) Writes the given byte value to given address.
void	putChar(long address, char x) Writes the given char value to given address.
void	putDouble(long address, double x) Writes the given double value to given address.
void	putFloat(long address, float x) Writes the given float value to given address.
void	putInt(long address, int x) Writes the given int value to given address.
void	putLong(long address, long x) Writes the given long value to given address.
void	putShort(long address, short x) Writes the given short value to given address.
void	setMemory(long address, long lengthBytes, byte value) Sets memory with given value from specified address as given size.

Method Detail

isBigEndian

boolean isBigEndian()

Tells whether this memory accessor is big- or little-endian. This applies to all the multibyte-width methods of integral type (get/putChar, get/putShort, get/putInt, get/putLong declared in this interface and others declared in subinterfaces).

Returns:

true if the accessor is big-endian; false otherwise

getBoolean

boolean getBoolean(long address)

Reads the boolean value from given address.

Parameters:

address - the address where the boolean value will be read from

Returns:

the value that is read

putBoolean

void putBoolean(long address,
                boolean x)

Writes the given boolean value to given address.

Parameters:

address - the address where the boolean value will be written to

x - the boolean value to be written

getByte

byte getByte(long address)

Reads the byte value from given address.

Parameters:

address - the address where the byte value will be read from

Returns:

the byte value that was read

putByte

void putByte(long address,
             byte x)

Writes the given byte value to given address.

Parameters:

address - the address where the byte value will be written to

x - the byte value to be written

getChar

char getChar(long address)

Reads the char value from given address.

Parameters:

address - the address where the char value will be read from

Returns:

the char value that was read

putChar

void putChar(long address,
             char x)

Writes the given char value to given address.

Parameters:

address - the address where the char value will be written to

x - the char value to be written

getShort

short getShort(long address)

Reads the short value from given address.

Parameters:

address - the address where the short value will be read from

Returns:

the short value that was read

putShort

void putShort(long address,
              short x)

Writes the given short value to given address.

Parameters:

address - the address where the short value will be written to

x - the short value to be written

getInt

int getInt(long address)

Reads the int value from given address.

Parameters:

address - the address where the int value will be read from

Returns:

the int value that was read

putInt

void putInt(long address,
            int x)

Writes the given int value to given address.

Parameters:

address - the address where the int value will be written to

x - the int value to be written

getFloat

float getFloat(long address)

Reads the float value from given address.

Parameters:

address - the address where the float value will be read from

Returns:

the float value that was read

putFloat

void putFloat(long address,
              float x)

Writes the given float value to given address.

Parameters:

address - the address where the float value will be written to

x - the float value to be written

getLong

long getLong(long address)

Reads the long value from given address.

Parameters:

address - the address where the long value will be read from

Returns:

the long value that was read

putLong

void putLong(long address,
             long x)

Writes the given long value to given address.

Parameters:

address - the address where the long value will be written to

x - the long value to be written

getDouble

double getDouble(long address)

Reads the double value from given address.

Parameters:

address - the address where the double value will be read from

Returns:

the double value that was read

putDouble

void putDouble(long address,
               double x)

Writes the given double value to given address.

Parameters:

address - the address where the double value will be written to

x - the double value to be written

copyMemory

void copyMemory(long srcAddress,
                long destAddress,
                long lengthBytes)

Copies memory from given source address to given destination address as given size.

Parameters:

srcAddress - the source address to be copied from

destAddress - the destination address to be copied to

lengthBytes - the number of bytes to be copied

copyFromByteArray

void copyFromByteArray(byte[] source,
                       int offset,
                       long destAddress,
                       int length)

Copies bytes from a Java byte array into this accessor's address space.

Parameters:

source - the source byte array

offset - index of the first byte to copy

destAddress - address where the first byte will be written

length - number of bytes to copy

copyToByteArray

void copyToByteArray(long srcAddress,
                     byte[] destination,
                     int offset,
                     int length)

Copies bytes from this accessor's address space to a Java byte array.

Parameters:

srcAddress - address of the first byte to copy

destination - the destination byte array

offset - array index where the first byte will be written

length - number of bytes to copy

setMemory

void setMemory(long address,
               long lengthBytes,
               byte value)

Sets memory with given value from specified address as given size.

Parameters:

address - the start address of the memory region which will be set with the given value

lengthBytes - the number of bytes to be set

value - the value to be set