public class TransientNativeMemory extends AbstractMemoryIO
Modifier and Type | Method and Description |
---|---|
static jnr.ffi.provider.jffi.DirectMemoryIO |
allocate(Runtime runtime,
int size,
int align,
boolean clear) |
Object |
array()
Returns the array that backs this pointer.
|
int |
arrayLength()
Returns the length of this pointer's backing array that is used by this pointer.
|
int |
arrayOffset()
Returns the offset within this pointer's backing array of the first element.
|
void |
dispose() |
boolean |
equals(Object obj) |
void |
get(long offset,
byte[] dst,
int off,
int len)
Bulk get method for multiple
byte values. |
void |
get(long offset,
double[] dst,
int off,
int len)
Bulk get method for multiple
double values. |
void |
get(long offset,
float[] dst,
int off,
int len)
Bulk get method for multiple
float values. |
void |
get(long offset,
int[] dst,
int off,
int len)
Bulk get method for multiple
int values. |
void |
get(long offset,
long[] dst,
int off,
int len)
Bulk get method for multiple
long values. |
void |
get(long offset,
short[] dst,
int off,
int len)
Bulk get method for multiple
short values. |
byte |
getByte(long offset)
Reads an
byte (8 bit) value at the given offset. |
double |
getDouble(long offset)
Reads a
double (64 bit) value at the given offset. |
float |
getFloat(long offset)
Reads a
float (32 bit) value at the given offset. |
int |
getInt(long offset)
Reads an
int (32 bit) value at the given offset. |
long |
getLongLong(long offset)
Reads a
long (64 bit) value at the given offset. |
Pointer |
getPointer(long offset)
Reads an
Pointer value at the given offset. |
Pointer |
getPointer(long offset,
long size)
Reads an
Pointer value at the given offset. |
short |
getShort(long offset)
Reads a
short (16 bit) value at the given offset. |
String |
getString(long offset)
Reads an
String value at the given offset. |
String |
getString(long offset,
int maxLength,
Charset cs)
Reads a
String value at the given offset, using a specific Charset |
boolean |
hasArray()
Indicates whether this Pointer instance is backed by an array.
|
int |
hashCode() |
int |
indexOf(long offset,
byte value,
int maxlen)
Returns the location of a byte value within the memory area represented by this
Pointer . |
void |
put(long offset,
byte[] src,
int off,
int len)
Bulk put method for multiple
byte values. |
void |
put(long offset,
double[] src,
int off,
int len)
Bulk put method for multiple
double values. |
void |
put(long offset,
float[] src,
int off,
int len)
Bulk put method for multiple
float values. |
void |
put(long offset,
int[] src,
int off,
int len)
Bulk put method for multiple
int values. |
void |
put(long offset,
long[] src,
int off,
int len)
Bulk put method for multiple
long values. |
void |
put(long offset,
short[] src,
int off,
int len)
Bulk put method for multiple
short values. |
void |
putByte(long offset,
byte value)
Writes a
byte (8 bit) value at the given offset. |
void |
putDouble(long offset,
double value)
Writes a
double (64 bit, double precision) value at the given offset. |
void |
putFloat(long offset,
float value)
Writes a
float (32 bit, single precision) value at the given offset. |
void |
putInt(long offset,
int value)
Writes an
int (32 bit) value at the given offset. |
void |
putLongLong(long offset,
long value)
Writes a
long (64 bit) value at the given offset. |
void |
putPointer(long offset,
Pointer value)
Writes a
Pointer value at the given offset. |
void |
putShort(long offset,
short value)
Writes a
short (16 bit) value at the given offset. |
void |
putString(long offset,
String string,
int maxLength,
Charset cs)
Writes a
String value at the given offset, using a specific Charset |
void |
putZeroTerminatedByteArray(long offset,
byte[] src,
int off,
int len) |
void |
setMemory(long offset,
long size,
byte value)
Sets the value of each byte in the memory area represented by this
Pointer . |
long |
size()
Gets the size of this memory object in bytes (optional operation).
|
checkBounds, checkBounds, getAddress, getInt, getLong, getNativeLong, indexOf, putAddress, putAddress, putInt, putLong, putNativeLong, slice, slice, transferFrom, transferTo
address, get, getNullTerminatedPointerArray, getNullTerminatedStringArray, getRuntime, isDirect, newIntPointer, put, toString, wrap, wrap, wrap
public static jnr.ffi.provider.jffi.DirectMemoryIO allocate(Runtime runtime, int size, int align, boolean clear)
public long size()
Pointer
Pointer
points to. If
the size is unknown, Long.MAX_VALUE
is returned}.public int hashCode()
public boolean equals(Object obj)
public final void dispose()
public boolean hasArray()
Pointer
public Object array()
Pointer
public int arrayOffset()
Pointer
arrayOffset
in class Pointer
public int arrayLength()
Pointer
arrayLength
in class Pointer
public final byte getByte(long offset)
Pointer
byte
(8 bit) value at the given offset.public final short getShort(long offset)
Pointer
short
(16 bit) value at the given offset.public final int getInt(long offset)
Pointer
int
(32 bit) value at the given offset.public final long getLongLong(long offset)
Pointer
long
(64 bit) value at the given offset.getLongLong
in class Pointer
offset
- The offset from the start of the memory this Pointer
represents at which the value will be read.long
value at the offset.public final float getFloat(long offset)
Pointer
float
(32 bit) value at the given offset.public final double getDouble(long offset)
Pointer
double
(64 bit) value at the given offset.public final void putByte(long offset, byte value)
Pointer
byte
(8 bit) value at the given offset.public final void putShort(long offset, short value)
Pointer
short
(16 bit) value at the given offset.public final void putInt(long offset, int value)
Pointer
int
(32 bit) value at the given offset.public final void putLongLong(long offset, long value)
Pointer
long
(64 bit) value at the given offset.putLongLong
in class Pointer
offset
- The offset from the start of the memory this Pointer
represents at which the value will be written.value
- the long
value to be written.public final void putFloat(long offset, float value)
Pointer
float
(32 bit, single precision) value at the given offset.public final void putDouble(long offset, double value)
Pointer
double
(64 bit, double precision) value at the given offset.public final void get(long offset, byte[] dst, int off, int len)
Pointer
byte
values.
This method reads multiple byte
values from consecutive addresses,
beginning at the given offset, and stores them in an array.get
in class Pointer
offset
- the offset from the start of the memory this Pointer
represents at which the first value will be read.dst
- the array into which values are to be stored.off
- the start index in the dst
array to begin storing the values.len
- the number of values to be read.public final void put(long offset, byte[] src, int off, int len)
Pointer
byte
values.
This method writes multiple byte
values to consecutive addresses,
beginning at the given offset, from an array.put
in class Pointer
offset
- the offset from the start of the memory this Pointer
represents at which the first value will be written.src
- the array to get values from.off
- the start index in the dst
array to begin reading values.len
- the number of values to be written.public final void get(long offset, short[] dst, int off, int len)
Pointer
short
values.
This method reads multiple short
values from consecutive addresses,
beginning at the given offset, and stores them in an array.get
in class Pointer
offset
- The offset from the start of the memory this Pointer
represents at which the first value will be read.dst
- The array into which values are to be stored.off
- the start index in the dst
array to begin storing the values.len
- the number of values to be read.public final void put(long offset, short[] src, int off, int len)
Pointer
short
values.
This method writes multiple short
values to consecutive addresses,
beginning at the given offset, from an array.put
in class Pointer
offset
- the offset from the start of the memory this Pointer
represents at which the first value will be written.src
- the array to get values from.off
- the start index in the dst
array to begin reading values.len
- the number of values to be written.public final void get(long offset, int[] dst, int off, int len)
Pointer
int
values.
This method reads multiple int
values from consecutive addresses,
beginning at the given offset, and stores them in an array.get
in class Pointer
offset
- The offset from the start of the memory this Pointer
represents at which the first value will be read.dst
- The array into which values are to be stored.off
- the start index in the dst
array to begin storing the values.len
- the number of values to be read.public final void put(long offset, int[] src, int off, int len)
Pointer
int
values.
This method writes multiple int
values to consecutive addresses,
beginning at the given offset, from an array.put
in class Pointer
offset
- the offset from the start of the memory this Pointer
represents at which the first value will be written.src
- the array to get values from.off
- the start index in the dst
array to begin reading values.len
- the number of values to be written.public final void get(long offset, long[] dst, int off, int len)
Pointer
long
values.
This method reads multiple long
values from consecutive addresses,
beginning at the given offset, and stores them in an array.get
in class Pointer
offset
- The offset from the start of the memory this Pointer
represents at which the first value will be read.dst
- The array into which values are to be stored.off
- the start index in the dst
array to begin storing the values.len
- the number of values to be read.public final void put(long offset, long[] src, int off, int len)
Pointer
long
values.
This method writes multiple long
values to consecutive addresses,
beginning at the given offset, from an array.put
in class Pointer
offset
- the offset from the start of the memory this Pointer
represents at which the first value will be written.src
- the array to get values from.off
- the start index in the dst
array to begin reading values.len
- the number of values to be written.public final void get(long offset, float[] dst, int off, int len)
Pointer
float
values.
This method reads multiple float
values from consecutive addresses,
beginning at the given offset, and stores them in an array.get
in class Pointer
offset
- The offset from the start of the memory this Pointer
represents at which the first value will be read.dst
- The array into which values are to be stored.off
- the start index in the dst
array to begin storing the values.len
- the number of values to be read.public final void put(long offset, float[] src, int off, int len)
Pointer
float
values.
This method writes multiple float
values to consecutive addresses,
beginning at the given offset, from an array.put
in class Pointer
offset
- the offset from the start of the memory this Pointer
represents at which the first value will be written.src
- the array to get values from.off
- the start index in the dst
array to begin reading values.len
- the number of values to be written.public final void get(long offset, double[] dst, int off, int len)
Pointer
double
values.
This method reads multiple double
values from consecutive addresses,
beginning at the given offset, and stores them in an array.get
in class Pointer
offset
- The offset from the start of the memory this Pointer
represents at which the first value will be read.dst
- The array into which values are to be stored.off
- the start index in the dst
array to begin storing the values.len
- the number of values to be read.public final void put(long offset, double[] src, int off, int len)
Pointer
double
values.
This method writes multiple double
values to consecutive addresses,
beginning at the given offset, from an array.put
in class Pointer
offset
- the offset from the start of the memory this Pointer
represents at which the first value will be written.src
- the array to get values from.off
- the start index in the dst
array to begin reading values.len
- the number of values to be written.public Pointer getPointer(long offset)
Pointer
Pointer
value at the given offset.getPointer
in class Pointer
offset
- the offset from the start of the memory this Pointer
represents at which the value will be read.Pointer
value read from memory.public Pointer getPointer(long offset, long size)
Pointer
Pointer
value at the given offset.getPointer
in class Pointer
offset
- the offset from the start of the memory this Pointer
represents at which the value will be read.size
- the maximum size of the memory location the returned Pointer
represents.Pointer
value read from memory.public void putPointer(long offset, Pointer value)
Pointer
Pointer
value at the given offset.putPointer
in class Pointer
offset
- The offset from the start of the memory this Pointer
represents at which the value will be written.value
- the Pointer
value to be written to memory.public String getString(long offset)
Pointer
String
value at the given offset.public String getString(long offset, int maxLength, Charset cs)
Pointer
String
value at the given offset, using a specific Charset
getString
in class Pointer
offset
- the offset from the start of the memory this Pointer
represents at which the value will be read.maxLength
- the maximum size of memory to search for a NUL byte.cs
- the Charset
to use to decode the string.String
value read from memory.public void putString(long offset, String string, int maxLength, Charset cs)
Pointer
String
value at the given offset, using a specific Charset
putString
in class Pointer
offset
- the offset from the start of the memory this Pointer
represents at which the value will be written.string
- the string to be written.maxLength
- the maximum size of memory to use to store the string.cs
- the Charset
to use to decode the string.public void putZeroTerminatedByteArray(long offset, byte[] src, int off, int len)
public int indexOf(long offset, byte value, int maxlen)
Pointer
Pointer
.indexOf
in class Pointer
offset
- the offset from the start of the memory location this Pointer
represents to begin searching.value
- the byte
value to locate.maxlen
- the maximum number of bytes to search for the desired value.public final void setMemory(long offset, long size, byte value)
Pointer
Pointer
.
to a specified value.Copyright © 2017. All rights reserved.