jnr.ffi.Pointer
jnr.ffi.provider.AbstractMemoryIO
jnr.ffi.provider.AbstractArrayMemoryIO
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java.lang.Object
public abstract class AbstractArrayMemoryIO
| Nested Class Summary | |
|---|---|
protected static class |
AbstractArrayMemoryIO.ArrayIO
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| Field Summary | |
|---|---|
protected byte[] |
buffer
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protected int |
length
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protected int |
offset
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| Constructor Summary | |
|---|---|
protected |
AbstractArrayMemoryIO(Runtime runtime,
byte[] buffer)
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protected |
AbstractArrayMemoryIO(Runtime runtime,
byte[] buffer,
int offset,
int length)
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protected |
AbstractArrayMemoryIO(Runtime runtime,
int size)
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| Method Summary | |
|---|---|
byte[] |
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 |
clear()
|
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. |
long |
getAddress(long offset)
Reads a native memory address value at the given offset. |
protected AbstractArrayMemoryIO.ArrayIO |
getArrayIO()
|
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. |
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. |
protected int |
index(long off)
|
int |
indexOf(long offset,
byte value)
Returns the location of a byte value within the memory area represented by this Pointer. |
int |
indexOf(long offset,
byte value,
int maxlen)
Returns the location of a byte value within the memory area represented by this Pointer. |
boolean |
isNull()
|
int |
length()
|
int |
offset()
|
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 |
putAddress(long offset,
long value)
Writes a native memory address value at the given offset. |
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 |
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)
|
protected int |
remaining(long offset)
|
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). |
| Methods inherited from class jnr.ffi.provider.AbstractMemoryIO |
|---|
checkBounds, checkBounds, getInt, getLong, getNativeLong, putAddress, putInt, putLong, putNativeLong, slice, slice, transferFrom, transferTo |
| Methods inherited from class jnr.ffi.Pointer |
|---|
address, get, getNullTerminatedPointerArray, getNullTerminatedStringArray, getPointer, getPointer, getRuntime, isDirect, newIntPointer, put, putPointer, toString, wrap, wrap, wrap |
| Methods inherited from class java.lang.Object |
|---|
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait |
| Field Detail |
|---|
protected final byte[] buffer
protected final int offset
protected final int length
| Constructor Detail |
|---|
protected AbstractArrayMemoryIO(Runtime runtime,
byte[] buffer,
int offset,
int length)
protected AbstractArrayMemoryIO(Runtime runtime,
byte[] buffer)
protected AbstractArrayMemoryIO(Runtime runtime,
int size)
| Method Detail |
|---|
protected final AbstractArrayMemoryIO.ArrayIO getArrayIO()
public final byte[] array()
Pointer
array in class Pointerpublic final int offset()
public final int length()
public final int arrayLength()
Pointer
arrayLength in class Pointerpublic final int arrayOffset()
Pointer
arrayOffset in class Pointerpublic final boolean hasArray()
Pointer
hasArray in class Pointerpublic final long size()
Pointer
size in class PointerPointer points to. If
the size is unknown, Long.MAX_VALUE is returned}.protected final int index(long off)
protected final int remaining(long offset)
public final boolean isNull()
public String getString(long offset)
PointerString value at the given offset.
getString in class Pointeroffset - the offset from the start of the memory this Pointer represents at which the value will be read.
String value read from memory.
public String getString(long offset,
int maxLength,
Charset cs)
PointerString value at the given offset, using a specific Charset
getString in class Pointeroffset - 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)
PointerString value at the given offset, using a specific Charset
putString in class Pointeroffset - the offset from the start of the memory this Pointer represents at which the value will 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 final byte getByte(long offset)
Pointerbyte (8 bit) value at the given offset.
getByte in class Pointeroffset - The offset from the start of the memory this Pointer represents at which the value will be read.
byte value at the offset.public final short getShort(long offset)
Pointershort (16 bit) value at the given offset.
getShort in class Pointeroffset - The offset from the start of the memory this Pointer represents at which the value will be read.
short value at the offset.public final int getInt(long offset)
Pointerint (32 bit) value at the given offset.
getInt in class Pointeroffset - The offset from the start of the memory this Pointer represents at which the value will be read.
int value contained in the memory at the offset.public final long getLongLong(long offset)
Pointerlong (64 bit) value at the given offset.
getLongLong in class Pointeroffset - 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 long getAddress(long offset)
PointerA native address can be either 32 or 64 bits in size, depending on the cpu architecture.
getAddress in class AbstractMemoryIOoffset - The offset from the start of the memory this Pointer represents at which the value will be read.
Addresspublic final float getFloat(long offset)
Pointerfloat (32 bit) value at the given offset.
getFloat in class Pointeroffset - The offset from the start of the memory this Pointer represents at which the value will be read.
float value at the offset.public final double getDouble(long offset)
Pointerdouble (64 bit) value at the given offset.
getDouble in class Pointeroffset - The offset from the start of the memory this Pointer represents at which the value will be read.
double value at the offset.
public final void putByte(long offset,
byte value)
Pointerbyte (8 bit) value at the given offset.
putByte in class Pointeroffset - The offset from the start of the memory this Pointer represents at which the value will be written.value - the byte value to be written.
public final void putShort(long offset,
short value)
Pointershort (16 bit) value at the given offset.
putShort in class Pointeroffset - The offset from the start of the memory this Pointer represents at which the value will be written.value - the short value to be written.
public final void putInt(long offset,
int value)
Pointerint (32 bit) value at the given offset.
putInt in class Pointeroffset - The offset from the start of the memory this Pointer represents at which the value will be written.value - the int value to be written.
public final void putLongLong(long offset,
long value)
Pointerlong (64 bit) value at the given offset.
putLongLong in class Pointeroffset - 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 putAddress(long offset,
long value)
PointerA native address can be either 32 or 64 bits in size, depending on the cpu architecture.
putAddress in class AbstractMemoryIOoffset - The offset from the start of the memory this Pointer represents at which the value will be written.value - The native address value to be written.Address
public final void putFloat(long offset,
float value)
Pointerfloat (32 bit, single precision) value at the given offset.
putFloat in class Pointeroffset - The offset from the start of the memory this Pointer represents at which the value will be written.value - the float value to be written.
public final void putDouble(long offset,
double value)
Pointerdouble (64 bit, double precision) value at the given offset.
putDouble in class Pointeroffset - The offset from the start of the memory this Pointer represents at which the value will be written.value - the double value to be written.
public final void get(long offset,
byte[] dst,
int off,
int len)
Pointerbyte values.
This method reads multiple byte values from consecutive addresses,
beginning at the given offset, and stores them in an array.
get in class Pointeroffset - 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)
Pointerbyte values.
This method writes multiple byte values to consecutive addresses,
beginning at the given offset, from an array.
put in class Pointeroffset - 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)
Pointershort values.
This method reads multiple short values from consecutive addresses,
beginning at the given offset, and stores them in an array.
get in class Pointeroffset - 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)
Pointershort values.
This method writes multiple short values to consecutive addresses,
beginning at the given offset, from an array.
put in class Pointeroffset - 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)
Pointerint values.
This method reads multiple int values from consecutive addresses,
beginning at the given offset, and stores them in an array.
get in class Pointeroffset - 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)
Pointerint values.
This method writes multiple int values to consecutive addresses,
beginning at the given offset, from an array.
put in class Pointeroffset - 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)
Pointerlong values.
This method reads multiple long values from consecutive addresses,
beginning at the given offset, and stores them in an array.
get in class Pointeroffset - 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)
Pointerlong values.
This method writes multiple long values to consecutive addresses,
beginning at the given offset, from an array.
put in class Pointeroffset - 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)
Pointerfloat values.
This method reads multiple float values from consecutive addresses,
beginning at the given offset, and stores them in an array.
get in class Pointeroffset - 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)
Pointerfloat values.
This method writes multiple float values to consecutive addresses,
beginning at the given offset, from an array.
put in class Pointeroffset - 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)
Pointerdouble values.
This method reads multiple double values from consecutive addresses,
beginning at the given offset, and stores them in an array.
get in class Pointeroffset - 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)
Pointerdouble values.
This method writes multiple double values to consecutive addresses,
beginning at the given offset, from an array.
put in class Pointeroffset - 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 int indexOf(long offset,
byte value)
PointerPointer.
indexOf in class AbstractMemoryIOoffset - the offset from the start of the memory location this Pointer represents to begin searching.value - the byte value to locate.
public final int indexOf(long offset,
byte value,
int maxlen)
PointerPointer.
indexOf in class Pointeroffset - 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)
PointerPointer.
to a specified value.
setMemory in class Pointeroffset - the offset from the start of the memory location this Pointer represents to begin writing to.size - the number of bytes to set to the value.value - the value to set each byte to.public final void clear()
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