JNR 2023-06-06 · com.kenai.jffi.UnsafeMemoryIO

Modifier and Type	Class and Description
pack-priv static class	UnsafeMemoryIO.UnsafeMemoryIO32 A 32 bit optimized implementation of `MemoryIO` using sun.misc.Unsafe
pack-priv static class	UnsafeMemoryIO.UnsafeMemoryIO64 A 64 bit optimized implementation of `MemoryIO` using sun.misc.Unsafe

Modifier and Type	Field and Description
protected static Unsafe	unsafe

Access	Constructor and Description
public	UnsafeMemoryIO()

Method Summary

Modifier and Type	Method and Description
public final void	_copyMemory(long The source memory address. src, long The destination memory address. dst, long The number of bytes to copy. size) Implements abstract com.kenai.jffi.MemoryIO._copyMemory. Copies contents of a native memory location to another native memory location.
public final byte	getByte(long The memory location to get the value from. address) Implements abstract com.kenai.jffi.MemoryIO.getByte. Reads an 8 bit integer from a native memory location.
public final void	getByteArray(long The native memory address to copy the array from. address, byte[] The java array to copy. data, int The offset within the array to start copying to. offset, int The number of array elements to copy. length) Implements abstract com.kenai.jffi.MemoryIO.getByteArray. Reads a java byte array from native memory.
public final void	getCharArray(long The native memory address to copy the array from. address, char[] The java array to copy. data, int The offset within the array to start copying to. offset, int The number of array elements to copy. length) Implements abstract com.kenai.jffi.MemoryIO.getCharArray. Reads a java char array from native memory.
public final double	getDouble(long The memory location to get the value from. address) Implements abstract com.kenai.jffi.MemoryIO.getDouble. Reads a 64 bit floating point value from a native memory location.
public final void	getDoubleArray(long The native memory address to copy the array from. address, double[] The java array to copy. data, int The offset within the array to start copying to. offset, int The number of array elements to copy. length) Implements abstract com.kenai.jffi.MemoryIO.getDoubleArray. Reads a java double array from native memory.
public final float	getFloat(long The memory location to get the value from. address) Implements abstract com.kenai.jffi.MemoryIO.getFloat. Reads a 32 bit floating point value from a native memory location.
public final void	getFloatArray(long The native memory address to copy the array from. address, float[] The java array to copy. data, int The offset within the array to start copying to. offset, int The number of array elements to copy. length) Implements abstract com.kenai.jffi.MemoryIO.getFloatArray. Reads a java float array from native memory.
public final int	getInt(long The memory location to get the value from. address) Implements abstract com.kenai.jffi.MemoryIO.getInt. Reads a 32 bit integer from a native memory location.
public final void	getIntArray(long The native memory address to copy the array from. address, int[] The java array to copy. data, int The offset within the array to start copying to. offset, int The number of array elements to copy. length) Implements abstract com.kenai.jffi.MemoryIO.getIntArray. Reads a java int array from native memory.
public final long	getLong(long The memory location to get the value from. address) Implements abstract com.kenai.jffi.MemoryIO.getLong. Reads a 64 bit integer from a native memory location.
public final void	getLongArray(long The native memory address to copy the array from. address, long[] The java array to copy. data, int The offset within the array to start copying to. offset, int The number of array elements to copy. length) Implements abstract com.kenai.jffi.MemoryIO.getLongArray. Reads a java long array from native memory.
public final short	getShort(long The memory location to get the value from. address) Implements abstract com.kenai.jffi.MemoryIO.getShort. Reads a 16 bit integer from a native memory location.
public final void	getShortArray(long The native memory address to copy the array from. address, short[] The java array to copy. data, int The offset within the array to start copying to. offset, int The number of array elements to copy. length) Implements abstract com.kenai.jffi.MemoryIO.getShortArray. Reads a java short array from native memory.
public final long	getStringLength(long The native address of the string. address) Implements abstract com.kenai.jffi.MemoryIO.getStringLength. Gets the length of a native ascii or utf-8 string.
private static Object	getUnsafe()
public final byte[]	getZeroTerminatedByteArray(long The address to read the data from. address) Implements abstract com.kenai.jffi.MemoryIO.getZeroTerminatedByteArray. Reads a byte array from native memory, stopping when a zero byte is found.
public final byte[]	getZeroTerminatedByteArray(long The address to read the data from. address, int The limit of the memory area to scan for a zero byte. maxlen) Implements abstract com.kenai.jffi.MemoryIO.getZeroTerminatedByteArray. Reads a byte array from native memory, stopping when a zero byte is found, or the maximum length is reached.
public final long	memchr(long The native memory address to start searching. address, int The value to search for. value, long The size of the native memory region being searched. size) Implements abstract com.kenai.jffi.MemoryIO.memchr. Gets the address of a byte value in a native memory region.
public final void	memcpy(long The destination memory address. dst, long The source memory address. src, long The number of bytes to copy. size) Implements abstract com.kenai.jffi.MemoryIO.memcpy. Copies bytes from one memory location to another.
public final void	memmove(long The destination memory address. dst, long The source memory address. src, long The number of bytes to copy. size) Implements abstract com.kenai.jffi.MemoryIO.memmove. Copies potentially overlapping memory areas.
public final void	putByte(long The memory location to put the value. address, byte The value to write to memory. value) Implements abstract com.kenai.jffi.MemoryIO.putByte. Writes an 8 bit integer value to a native memory location.
public final void	putByteArray(long The native memory address to copy the array to. address, byte[] The java array to copy. data, int The offset within the array to start copying from. offset, int The number of array elements to copy. length) Implements abstract com.kenai.jffi.MemoryIO.putByteArray. Writes a java byte array to native memory.
public final void	putCharArray(long The native memory address to copy the array to. address, char[] The java array to copy. data, int The offset within the array to start copying from. offset, int The number of array elements to copy. length) Implements abstract com.kenai.jffi.MemoryIO.putCharArray. Writes a java char array to native memory.
public final void	putDouble(long The memory location to put the value. address, double The value to write to memory. value) Implements abstract com.kenai.jffi.MemoryIO.putDouble. Writes a 64 bit floating point value to a native memory location.
public final void	putDoubleArray(long The native memory address to copy the array to. address, double[] The java array to copy. data, int The offset within the array to start copying from. offset, int The number of array elements to copy. length) Implements abstract com.kenai.jffi.MemoryIO.putDoubleArray. Writes a java double array to native memory.
public final void	putFloat(long The memory location to put the value. address, float The value to write to memory. value) Implements abstract com.kenai.jffi.MemoryIO.putFloat. Writes a 32 bit floating point value to a native memory location.
public final void	putFloatArray(long The native memory address to copy the array to. address, float[] The java array to copy. data, int The offset within the array to start copying from. offset, int The number of array elements to copy. length) Implements abstract com.kenai.jffi.MemoryIO.putFloatArray. Writes a java double array to native memory.
public final void	putInt(long The memory location to put the value. address, int The value to write to memory. value) Implements abstract com.kenai.jffi.MemoryIO.putInt. Writes a 32 bit integer value to a native memory location.
public final void	putIntArray(long The native memory address to copy the array to. address, int[] The java array to copy. data, int The offset within the array to start copying from. offset, int The number of array elements to copy. length) Implements abstract com.kenai.jffi.MemoryIO.putIntArray. Writes a java int array to native memory.
public final void	putLong(long The memory location to put the value. address, long The value to write to memory. value) Implements abstract com.kenai.jffi.MemoryIO.putLong. Writes a 64 bit integer value to a native memory location.
public final void	putLongArray(long The native memory address to copy the array to. address, long[] The java array to copy. data, int The offset within the array to start copying from. offset, int The number of array elements to copy. length) Implements abstract com.kenai.jffi.MemoryIO.putLongArray. Writes a java long array to native memory.
public final void	putShort(long The memory location to put the value. address, short The value to write to memory. value) Implements abstract com.kenai.jffi.MemoryIO.putShort. Writes a 16 bit integer value to a native memory location.
public final void	putShortArray(long The native memory address to copy the array to. address, short[] The java array to copy. data, int The offset within the array to start copying from. offset, int The number of array elements to copy. length) Implements abstract com.kenai.jffi.MemoryIO.putShortArray. Writes a java short array to native memory.
public final void	putZeroTerminatedByteArray(long The address to copy to. address, byte[] The byte array to copy to native memory data, int The offset within the byte array to begin copying from offset, int The number of bytes to copy to native memory length) Implements abstract com.kenai.jffi.MemoryIO.putZeroTerminatedByteArray. Copies a java byte array to native memory and appends a NUL terminating byte Note A total of length + 1 bytes is written to native memory.
public final void	setMemory(long The address of start of the native memory. src, long The number of bytes to set. size, byte The value to set the native memory to. value) Implements abstract com.kenai.jffi.MemoryIO.setMemory. Sets a region of native memory to a specific byte value.

Inherited from com.kenai.jffi.MemoryIO:: allocateMemory copyMemory freeMemory getAddress getCheckedInstance getDirectBufferAddress getInstance getZeroTerminatedByteArray indexOf indexOf isUnsafeAvailable memset newDirectByteBuffer putAddress

unsafe	back to summary
protected static Unsafe unsafe

UnsafeMemoryIO	back to summary
public UnsafeMemoryIO()

Method Detail

_copyMemory	back to summary
public final void _copyMemory(long src, long dst, long size) Implements abstract com.kenai.jffi.MemoryIO._copyMemory. Doc from com.kenai.jffi.MemoryIO._copyMemory. Copies contents of a native memory location to another native memory location. Parameters src:long The source memory address. dst:long The destination memory address. size:long The number of bytes to copy.

_copyMemory

back to summary

public final void _copyMemory(long src, long dst, long size)

Implements abstract com.kenai.jffi.MemoryIO._copyMemory.

Doc from com.kenai.jffi.MemoryIO._copyMemory.

Copies contents of a native memory location to another native memory location.

Parameters

src:long: The source memory address.
dst:long: The destination memory address.
size:long: The number of bytes to copy.

getByte	back to summary
public final byte getByte(long address) Implements abstract com.kenai.jffi.MemoryIO.getByte. Doc from com.kenai.jffi.MemoryIO.getByte. Reads an 8 bit integer from a native memory location. Parameters address:long The memory location to get the value from. Returns:byte A byte containing the value.

getByte

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public final byte getByte(long address)

Implements abstract com.kenai.jffi.MemoryIO.getByte.

Doc from com.kenai.jffi.MemoryIO.getByte.

Reads an 8 bit integer from a native memory location.

Parameters

address:long: The memory location to get the value from.

Returns:byte

A byte containing the value.

getByteArray	back to summary
public final void getByteArray(long address, byte[] data, int offset, int length) Implements abstract com.kenai.jffi.MemoryIO.getByteArray. Doc from com.kenai.jffi.MemoryIO.getByteArray. Reads a java byte array from native memory. Parameters address:long The native memory address to copy the array from. data:byte[] The java array to copy. offset:int The offset within the array to start copying to. length:int The number of array elements to copy.

getByteArray

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public final void getByteArray(long address, byte[] data, int offset, int length)

Implements abstract com.kenai.jffi.MemoryIO.getByteArray.

Doc from com.kenai.jffi.MemoryIO.getByteArray.

Reads a java byte array from native memory.

Parameters

address:long: The native memory address to copy the array from.
data:byte[]: The java array to copy.
offset:int: The offset within the array to start copying to.
length:int: The number of array elements to copy.

getCharArray	back to summary
public final void getCharArray(long address, char[] data, int offset, int length) Implements abstract com.kenai.jffi.MemoryIO.getCharArray. Doc from com.kenai.jffi.MemoryIO.getCharArray. Reads a java char array from native memory. Parameters address:long The native memory address to copy the array from. data:char[] The java array to copy. offset:int The offset within the array to start copying to. length:int The number of array elements to copy.

getCharArray

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public final void getCharArray(long address, char[] data, int offset, int length)

Implements abstract com.kenai.jffi.MemoryIO.getCharArray.

Doc from com.kenai.jffi.MemoryIO.getCharArray.

Reads a java char array from native memory.

Parameters

address:long: The native memory address to copy the array from.
data:char[]: The java array to copy.
offset:int: The offset within the array to start copying to.
length:int: The number of array elements to copy.

getDouble	back to summary
public final double getDouble(long address) Implements abstract com.kenai.jffi.MemoryIO.getDouble. Doc from com.kenai.jffi.MemoryIO.getDouble. Reads a 64 bit floating point value from a native memory location. Parameters address:long The memory location to get the value from. Returns:double A double containing the value.

getDouble

back to summary

public final double getDouble(long address)

Implements abstract com.kenai.jffi.MemoryIO.getDouble.

Doc from com.kenai.jffi.MemoryIO.getDouble.

Reads a 64 bit floating point value from a native memory location.

Parameters

address:long: The memory location to get the value from.

Returns:double

A double containing the value.

getDoubleArray	back to summary
public final void getDoubleArray(long address, double[] data, int offset, int length) Implements abstract com.kenai.jffi.MemoryIO.getDoubleArray. Doc from com.kenai.jffi.MemoryIO.getDoubleArray. Reads a java double array from native memory. Parameters address:long The native memory address to copy the array from. data:double[] The java array to copy. offset:int The offset within the array to start copying to. length:int The number of array elements to copy.

getDoubleArray

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public final void getDoubleArray(long address, double[] data, int offset, int length)

Implements abstract com.kenai.jffi.MemoryIO.getDoubleArray.

Doc from com.kenai.jffi.MemoryIO.getDoubleArray.

Reads a java double array from native memory.

Parameters

address:long: The native memory address to copy the array from.
data:double[]: The java array to copy.
offset:int: The offset within the array to start copying to.
length:int: The number of array elements to copy.

getFloat	back to summary
public final float getFloat(long address) Implements abstract com.kenai.jffi.MemoryIO.getFloat. Doc from com.kenai.jffi.MemoryIO.getFloat. Reads a 32 bit floating point value from a native memory location. Parameters address:long The memory location to get the value from. Returns:float A float containing the value.

getFloat

back to summary

public final float getFloat(long address)

Implements abstract com.kenai.jffi.MemoryIO.getFloat.

Doc from com.kenai.jffi.MemoryIO.getFloat.

Reads a 32 bit floating point value from a native memory location.

Parameters

address:long: The memory location to get the value from.

Returns:float

A float containing the value.

getFloatArray	back to summary
public final void getFloatArray(long address, float[] data, int offset, int length) Implements abstract com.kenai.jffi.MemoryIO.getFloatArray. Doc from com.kenai.jffi.MemoryIO.getFloatArray. Reads a java float array from native memory. Parameters address:long The native memory address to copy the array from. data:float[] The java array to copy. offset:int The offset within the array to start copying to. length:int The number of array elements to copy.

getFloatArray

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public final void getFloatArray(long address, float[] data, int offset, int length)

Implements abstract com.kenai.jffi.MemoryIO.getFloatArray.

Doc from com.kenai.jffi.MemoryIO.getFloatArray.

Reads a java float array from native memory.

Parameters

address:long: The native memory address to copy the array from.
data:float[]: The java array to copy.
offset:int: The offset within the array to start copying to.
length:int: The number of array elements to copy.

getInt	back to summary
public final int getInt(long address) Implements abstract com.kenai.jffi.MemoryIO.getInt. Doc from com.kenai.jffi.MemoryIO.getInt. Reads a 32 bit integer from a native memory location. Parameters address:long The memory location to get the value from. Returns:int An int containing the value.

getInt

back to summary

public final int getInt(long address)

Implements abstract com.kenai.jffi.MemoryIO.getInt.

Doc from com.kenai.jffi.MemoryIO.getInt.

Reads a 32 bit integer from a native memory location.

Parameters

address:long: The memory location to get the value from.

Returns:int

An int containing the value.

getIntArray	back to summary
public final void getIntArray(long address, int[] data, int offset, int length) Implements abstract com.kenai.jffi.MemoryIO.getIntArray. Doc from com.kenai.jffi.MemoryIO.getIntArray. Reads a java int array from native memory. Parameters address:long The native memory address to copy the array from. data:int[] The java array to copy. offset:int The offset within the array to start copying to. length:int The number of array elements to copy.

getIntArray

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public final void getIntArray(long address, int[] data, int offset, int length)

Implements abstract com.kenai.jffi.MemoryIO.getIntArray.

Doc from com.kenai.jffi.MemoryIO.getIntArray.

Reads a java int array from native memory.

Parameters

address:long: The native memory address to copy the array from.
data:int[]: The java array to copy.
offset:int: The offset within the array to start copying to.
length:int: The number of array elements to copy.

getLong	back to summary
public final long getLong(long address) Implements abstract com.kenai.jffi.MemoryIO.getLong. Doc from com.kenai.jffi.MemoryIO.getLong. Reads a 64 bit integer from a native memory location. Parameters address:long The memory location to get the value from. Returns:long A long containing the value.

getLong

back to summary

public final long getLong(long address)

Implements abstract com.kenai.jffi.MemoryIO.getLong.

Doc from com.kenai.jffi.MemoryIO.getLong.

Reads a 64 bit integer from a native memory location.

Parameters

address:long: The memory location to get the value from.

Returns:long

A long containing the value.

getLongArray	back to summary
public final void getLongArray(long address, long[] data, int offset, int length) Implements abstract com.kenai.jffi.MemoryIO.getLongArray. Doc from com.kenai.jffi.MemoryIO.getLongArray. Reads a java long array from native memory. Parameters address:long The native memory address to copy the array from. data:long[] The java array to copy. offset:int The offset within the array to start copying to. length:int The number of array elements to copy.

getLongArray

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public final void getLongArray(long address, long[] data, int offset, int length)

Implements abstract com.kenai.jffi.MemoryIO.getLongArray.

Doc from com.kenai.jffi.MemoryIO.getLongArray.

Reads a java long array from native memory.

Parameters

address:long: The native memory address to copy the array from.
data:long[]: The java array to copy.
offset:int: The offset within the array to start copying to.
length:int: The number of array elements to copy.

getShort	back to summary
public final short getShort(long address) Implements abstract com.kenai.jffi.MemoryIO.getShort. Doc from com.kenai.jffi.MemoryIO.getShort. Reads a 16 bit integer from a native memory location. Parameters address:long The memory location to get the value from. Returns:short A short containing the value.

getShort

back to summary

public final short getShort(long address)

Implements abstract com.kenai.jffi.MemoryIO.getShort.

Doc from com.kenai.jffi.MemoryIO.getShort.

Reads a 16 bit integer from a native memory location.

Parameters

address:long: The memory location to get the value from.

Returns:short

A short containing the value.

getShortArray	back to summary
public final void getShortArray(long address, short[] data, int offset, int length) Implements abstract com.kenai.jffi.MemoryIO.getShortArray. Doc from com.kenai.jffi.MemoryIO.getShortArray. Reads a java short array from native memory. Parameters address:long The native memory address to copy the array from. data:short[] The java array to copy. offset:int The offset within the array to start copying to. length:int The number of array elements to copy.

getShortArray

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public final void getShortArray(long address, short[] data, int offset, int length)

Implements abstract com.kenai.jffi.MemoryIO.getShortArray.

Doc from com.kenai.jffi.MemoryIO.getShortArray.

Reads a java short array from native memory.

Parameters

address:long: The native memory address to copy the array from.
data:short[]: The java array to copy.
offset:int: The offset within the array to start copying to.
length:int: The number of array elements to copy.

getStringLength	back to summary
public final long getStringLength(long address) Implements abstract com.kenai.jffi.MemoryIO.getStringLength. Doc from com.kenai.jffi.MemoryIO.getStringLength. Gets the length of a native ascii or utf-8 string. Parameters address:long The native address of the string. Returns:long The length of the string, in bytes.

getStringLength

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public final long getStringLength(long address)

Implements abstract com.kenai.jffi.MemoryIO.getStringLength.

Doc from com.kenai.jffi.MemoryIO.getStringLength.

Gets the length of a native ascii or utf-8 string.

Parameters

address:long: The native address of the string.

Returns:long

The length of the string, in bytes.

getUnsafe	back to summary
private static Object getUnsafe()

getZeroTerminatedByteArray	back to summary
public final byte[] getZeroTerminatedByteArray(long address) Implements abstract com.kenai.jffi.MemoryIO.getZeroTerminatedByteArray. Doc from com.kenai.jffi.MemoryIO.getZeroTerminatedByteArray. Reads a byte array from native memory, stopping when a zero byte is found. This can be used to read ascii or utf-8 strings from native memory. Parameters address:long The address to read the data from. Returns:byte[] The byte array containing a copy of the native data. Any zero byte is stripped from the end.

getZeroTerminatedByteArray

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public final byte[] getZeroTerminatedByteArray(long address)

Implements abstract com.kenai.jffi.MemoryIO.getZeroTerminatedByteArray.

Doc from com.kenai.jffi.MemoryIO.getZeroTerminatedByteArray.

Reads a byte array from native memory, stopping when a zero byte is found. This can be used to read ascii or utf-8 strings from native memory.

Parameters

address:long: The address to read the data from.

Returns:byte[]

The byte array containing a copy of the native data. Any zero byte is stripped from the end.

getZeroTerminatedByteArray	back to summary
public final byte[] getZeroTerminatedByteArray(long address, int maxlen) Implements abstract com.kenai.jffi.MemoryIO.getZeroTerminatedByteArray. Doc from com.kenai.jffi.MemoryIO.getZeroTerminatedByteArray. Reads a byte array from native memory, stopping when a zero byte is found, or the maximum length is reached. This can be used to read ascii or utf-8 strings from native memory. Parameters address:long The address to read the data from. maxlen:int The limit of the memory area to scan for a zero byte. Returns:byte[] The byte array containing a copy of the native data. Any zero byte is stripped from the end.

getZeroTerminatedByteArray

back to summary

public final byte[] getZeroTerminatedByteArray(long address, int maxlen)

Implements abstract com.kenai.jffi.MemoryIO.getZeroTerminatedByteArray.

Doc from com.kenai.jffi.MemoryIO.getZeroTerminatedByteArray.

Reads a byte array from native memory, stopping when a zero byte is found, or the maximum length is reached. This can be used to read ascii or utf-8 strings from native memory.

Parameters

address:long: The address to read the data from.
maxlen:int: The limit of the memory area to scan for a zero byte.

Returns:byte[]

The byte array containing a copy of the native data. Any zero byte is stripped from the end.

memchr	back to summary
public final long memchr(long address, int value, long size) Implements abstract com.kenai.jffi.MemoryIO.memchr. Doc from com.kenai.jffi.MemoryIO.memchr. Gets the address of a byte value in a native memory region. Parameters address:long The native memory address to start searching. value:int The value to search for. size:long The size of the native memory region being searched. Returns:long The address of the value, or 0 (zero) if not found.

memchr

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public final long memchr(long address, int value, long size)

Implements abstract com.kenai.jffi.MemoryIO.memchr.

Doc from com.kenai.jffi.MemoryIO.memchr.

Gets the address of a byte value in a native memory region.

Parameters

address:long: The native memory address to start searching.
value:int: The value to search for.
size:long: The size of the native memory region being searched.

Returns:long

The address of the value, or 0 (zero) if not found.

memcpy	back to summary
public final void memcpy(long dst, long src, long size) Implements abstract com.kenai.jffi.MemoryIO.memcpy. Doc from com.kenai.jffi.MemoryIO.memcpy. Copies bytes from one memory location to another. The memory areas Parameters dst:long The destination memory address. src:long The source memory address. size:long The number of bytes to copy.

memcpy

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public final void memcpy(long dst, long src, long size)

Implements abstract com.kenai.jffi.MemoryIO.memcpy.

Doc from com.kenai.jffi.MemoryIO.memcpy.

Copies bytes from one memory location to another. The memory areas

Parameters

dst:long: The destination memory address.
src:long: The source memory address.
size:long: The number of bytes to copy.

memmove	back to summary
public final void memmove(long dst, long src, long size) Implements abstract com.kenai.jffi.MemoryIO.memmove. Doc from com.kenai.jffi.MemoryIO.memmove. Copies potentially overlapping memory areas. Parameters dst:long The destination memory address. src:long The source memory address. size:long The number of bytes to copy.

memmove

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public final void memmove(long dst, long src, long size)

Implements abstract com.kenai.jffi.MemoryIO.memmove.

Doc from com.kenai.jffi.MemoryIO.memmove.

Copies potentially overlapping memory areas.

Parameters

dst:long: The destination memory address.
src:long: The source memory address.
size:long: The number of bytes to copy.

putByte	back to summary
public final void putByte(long address, byte value) Implements abstract com.kenai.jffi.MemoryIO.putByte. Doc from com.kenai.jffi.MemoryIO.putByte. Writes an 8 bit integer value to a native memory location. Parameters address:long The memory location to put the value. value:byte The value to write to memory.

putByte

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public final void putByte(long address, byte value)

Implements abstract com.kenai.jffi.MemoryIO.putByte.

Doc from com.kenai.jffi.MemoryIO.putByte.

Writes an 8 bit integer value to a native memory location.

Parameters

address:long: The memory location to put the value.
value:byte: The value to write to memory.

putByteArray	back to summary
public final void putByteArray(long address, byte[] data, int offset, int length) Implements abstract com.kenai.jffi.MemoryIO.putByteArray. Doc from com.kenai.jffi.MemoryIO.putByteArray. Writes a java byte array to native memory. Parameters address:long The native memory address to copy the array to. data:byte[] The java array to copy. offset:int The offset within the array to start copying from. length:int The number of array elements to copy.

putByteArray

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public final void putByteArray(long address, byte[] data, int offset, int length)

Implements abstract com.kenai.jffi.MemoryIO.putByteArray.

Doc from com.kenai.jffi.MemoryIO.putByteArray.

Writes a java byte array to native memory.

Parameters

address:long: The native memory address to copy the array to.
data:byte[]: The java array to copy.
offset:int: The offset within the array to start copying from.
length:int: The number of array elements to copy.

putCharArray	back to summary
public final void putCharArray(long address, char[] data, int offset, int length) Implements abstract com.kenai.jffi.MemoryIO.putCharArray. Doc from com.kenai.jffi.MemoryIO.putCharArray. Writes a java char array to native memory. Parameters address:long The native memory address to copy the array to. data:char[] The java array to copy. offset:int The offset within the array to start copying from. length:int The number of array elements to copy.

putCharArray

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public final void putCharArray(long address, char[] data, int offset, int length)

Implements abstract com.kenai.jffi.MemoryIO.putCharArray.

Doc from com.kenai.jffi.MemoryIO.putCharArray.

Writes a java char array to native memory.

Parameters

address:long: The native memory address to copy the array to.
data:char[]: The java array to copy.
offset:int: The offset within the array to start copying from.
length:int: The number of array elements to copy.

putDouble	back to summary
public final void putDouble(long address, double value) Implements abstract com.kenai.jffi.MemoryIO.putDouble. Doc from com.kenai.jffi.MemoryIO.putDouble. Writes a 64 bit floating point value to a native memory location. Parameters address:long The memory location to put the value. value:double The value to write to memory.

putDouble

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public final void putDouble(long address, double value)

Implements abstract com.kenai.jffi.MemoryIO.putDouble.

Doc from com.kenai.jffi.MemoryIO.putDouble.

Writes a 64 bit floating point value to a native memory location.

Parameters

address:long: The memory location to put the value.
value:double: The value to write to memory.

putDoubleArray	back to summary
public final void putDoubleArray(long address, double[] data, int offset, int length) Implements abstract com.kenai.jffi.MemoryIO.putDoubleArray. Doc from com.kenai.jffi.MemoryIO.putDoubleArray. Writes a java double array to native memory. Parameters address:long The native memory address to copy the array to. data:double[] The java array to copy. offset:int The offset within the array to start copying from. length:int The number of array elements to copy.

putDoubleArray

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public final void putDoubleArray(long address, double[] data, int offset, int length)

Implements abstract com.kenai.jffi.MemoryIO.putDoubleArray.

Doc from com.kenai.jffi.MemoryIO.putDoubleArray.

Writes a java double array to native memory.

Parameters

address:long: The native memory address to copy the array to.
data:double[]: The java array to copy.
offset:int: The offset within the array to start copying from.
length:int: The number of array elements to copy.

putFloat	back to summary
public final void putFloat(long address, float value) Implements abstract com.kenai.jffi.MemoryIO.putFloat. Doc from com.kenai.jffi.MemoryIO.putFloat. Writes a 32 bit floating point value to a native memory location. Parameters address:long The memory location to put the value. value:float The value to write to memory.

putFloat

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public final void putFloat(long address, float value)

Implements abstract com.kenai.jffi.MemoryIO.putFloat.

Doc from com.kenai.jffi.MemoryIO.putFloat.

Writes a 32 bit floating point value to a native memory location.

Parameters

address:long: The memory location to put the value.
value:float: The value to write to memory.

putFloatArray	back to summary
public final void putFloatArray(long address, float[] data, int offset, int length) Implements abstract com.kenai.jffi.MemoryIO.putFloatArray. Doc from com.kenai.jffi.MemoryIO.putFloatArray. Writes a java double array to native memory. Parameters address:long The native memory address to copy the array to. data:float[] The java array to copy. offset:int The offset within the array to start copying from. length:int The number of array elements to copy.

putFloatArray

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public final void putFloatArray(long address, float[] data, int offset, int length)

Implements abstract com.kenai.jffi.MemoryIO.putFloatArray.

Doc from com.kenai.jffi.MemoryIO.putFloatArray.

Writes a java double array to native memory.

Parameters

address:long: The native memory address to copy the array to.
data:float[]: The java array to copy.
offset:int: The offset within the array to start copying from.
length:int: The number of array elements to copy.

putInt	back to summary
public final void putInt(long address, int value) Implements abstract com.kenai.jffi.MemoryIO.putInt. Doc from com.kenai.jffi.MemoryIO.putInt. Writes a 32 bit integer value to a native memory location. Parameters address:long The memory location to put the value. value:int The value to write to memory.

putInt

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public final void putInt(long address, int value)

Implements abstract com.kenai.jffi.MemoryIO.putInt.

Doc from com.kenai.jffi.MemoryIO.putInt.

Writes a 32 bit integer value to a native memory location.

Parameters

address:long: The memory location to put the value.
value:int: The value to write to memory.

putIntArray	back to summary
public final void putIntArray(long address, int[] data, int offset, int length) Implements abstract com.kenai.jffi.MemoryIO.putIntArray. Doc from com.kenai.jffi.MemoryIO.putIntArray. Writes a java int array to native memory. Parameters address:long The native memory address to copy the array to. data:int[] The java array to copy. offset:int The offset within the array to start copying from. length:int The number of array elements to copy.

putIntArray

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public final void putIntArray(long address, int[] data, int offset, int length)

Implements abstract com.kenai.jffi.MemoryIO.putIntArray.

Doc from com.kenai.jffi.MemoryIO.putIntArray.

Writes a java int array to native memory.

Parameters

address:long: The native memory address to copy the array to.
data:int[]: The java array to copy.
offset:int: The offset within the array to start copying from.
length:int: The number of array elements to copy.

putLong	back to summary
public final void putLong(long address, long value) Implements abstract com.kenai.jffi.MemoryIO.putLong. Doc from com.kenai.jffi.MemoryIO.putLong. Writes a 64 bit integer value to a native memory location. Parameters address:long The memory location to put the value. value:long The value to write to memory.

putLong

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public final void putLong(long address, long value)

Implements abstract com.kenai.jffi.MemoryIO.putLong.

Doc from com.kenai.jffi.MemoryIO.putLong.

Writes a 64 bit integer value to a native memory location.

Parameters

address:long: The memory location to put the value.
value:long: The value to write to memory.

putLongArray	back to summary
public final void putLongArray(long address, long[] data, int offset, int length) Implements abstract com.kenai.jffi.MemoryIO.putLongArray. Doc from com.kenai.jffi.MemoryIO.putLongArray. Writes a java long array to native memory. Parameters address:long The native memory address to copy the array to. data:long[] The java array to copy. offset:int The offset within the array to start copying from. length:int The number of array elements to copy.

putLongArray

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public final void putLongArray(long address, long[] data, int offset, int length)

Implements abstract com.kenai.jffi.MemoryIO.putLongArray.

Doc from com.kenai.jffi.MemoryIO.putLongArray.

Writes a java long array to native memory.

Parameters

address:long: The native memory address to copy the array to.
data:long[]: The java array to copy.
offset:int: The offset within the array to start copying from.
length:int: The number of array elements to copy.

putShort	back to summary
public final void putShort(long address, short value) Implements abstract com.kenai.jffi.MemoryIO.putShort. Doc from com.kenai.jffi.MemoryIO.putShort. Writes a 16 bit integer value to a native memory location. Parameters address:long The memory location to put the value. value:short The value to write to memory.

putShort

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public final void putShort(long address, short value)

Implements abstract com.kenai.jffi.MemoryIO.putShort.

Doc from com.kenai.jffi.MemoryIO.putShort.

Writes a 16 bit integer value to a native memory location.

Parameters

address:long: The memory location to put the value.
value:short: The value to write to memory.

putShortArray	back to summary
public final void putShortArray(long address, short[] data, int offset, int length) Implements abstract com.kenai.jffi.MemoryIO.putShortArray. Doc from com.kenai.jffi.MemoryIO.putShortArray. Writes a java short array to native memory. Parameters address:long The native memory address to copy the array to. data:short[] The java array to copy. offset:int The offset within the array to start copying from. length:int The number of array elements to copy.

putShortArray

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public final void putShortArray(long address, short[] data, int offset, int length)

Implements abstract com.kenai.jffi.MemoryIO.putShortArray.

Doc from com.kenai.jffi.MemoryIO.putShortArray.

Writes a java short array to native memory.

Parameters

address:long: The native memory address to copy the array to.
data:short[]: The java array to copy.
offset:int: The offset within the array to start copying from.
length:int: The number of array elements to copy.

putZeroTerminatedByteArray	back to summary
public final void putZeroTerminatedByteArray(long address, byte[] data, int offset, int length) Implements abstract com.kenai.jffi.MemoryIO.putZeroTerminatedByteArray. Doc from com.kenai.jffi.MemoryIO.putZeroTerminatedByteArray. Copies a java byte array to native memory and appends a NUL terminating byte Note A total of length + 1 bytes is written to native memory. Parameters address:long The address to copy to. data:byte[] The byte array to copy to native memory offset:int The offset within the byte array to begin copying from length:int The number of bytes to copy to native memory

putZeroTerminatedByteArray

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public final void putZeroTerminatedByteArray(long address, byte[] data, int offset, int length)

Implements abstract com.kenai.jffi.MemoryIO.putZeroTerminatedByteArray.

Doc from com.kenai.jffi.MemoryIO.putZeroTerminatedByteArray.

Copies a java byte array to native memory and appends a NUL terminating byte

Note

A total of length + 1 bytes is written to native memory.

Parameters

address:long: The address to copy to.
data:byte[]: The byte array to copy to native memory
offset:int: The offset within the byte array to begin copying from
length:int: The number of bytes to copy to native memory

setMemory	back to summary
public final void setMemory(long src, long size, byte value) Implements abstract com.kenai.jffi.MemoryIO.setMemory. Doc from com.kenai.jffi.MemoryIO.setMemory. Sets a region of native memory to a specific byte value. Parameters src:long The address of start of the native memory. size:long The number of bytes to set. value:byte The value to set the native memory to.

setMemory

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public final void setMemory(long src, long size, byte value)

Implements abstract com.kenai.jffi.MemoryIO.setMemory.

Doc from com.kenai.jffi.MemoryIO.setMemory.

Sets a region of native memory to a specific byte value.

Parameters

src:long: The address of start of the native memory.
size:long: The number of bytes to set.
value:byte: The value to set the native memory to.

public abstract Class UnsafeMemoryIO

Nested and Inner Type Summary

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Field Detail

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Method Detail

pack-priv Class UnsafeMemoryIO.UnsafeMemoryIO32

Field Summary

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Method Detail

pack-priv Class UnsafeMemoryIO.UnsafeMemoryIO64

Field Summary

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Constructor Detail

Method Detail

Modifier and Type	Method and Description
public final long	getAddress(long The memory location to get the value from. address) Implements abstract com.kenai.jffi.MemoryIO.getAddress. Reads a native memory address from a native memory location.
public final void	putAddress(long The memory location to put the value. address, long The value to write to memory. value) Implements abstract com.kenai.jffi.MemoryIO.putAddress. Writes a native memory address value to a native memory location.