Class HeapBuffer
- java.lang.Object
-
- org.glassfish.grizzly.memory.HeapBuffer
-
- All Implemented Interfaces:
Comparable<Buffer>,WritableMessage,Buffer
public class HeapBuffer extends Object implements Buffer
Bufferimplementation, which uses theByteBufferunderneath.- Since:
- 2.0
- Author:
- Ken Cavanaugh, John Vieten, Alexey Stashok, Ryan Lubke
- See Also:
Buffer,MemoryManager,ByteBuffer
-
-
Field Summary
Fields Modifier and Type Field Description protected booleanallowBufferDisposeprotected booleanbigEndianprotected ByteBufferbyteBufferprotected intcapstatic booleanDEBUG_MODEprotected ExceptiondisposeStackTraceprotected byte[]heapprotected intlimprotected intmarkprotected intoffsetprotected ByteOrderorderprotected intposprotected booleanreadOnly
-
Constructor Summary
Constructors Modifier Constructor Description protectedHeapBuffer()protectedHeapBuffer(byte[] heap, int offset, int cap)
-
Method Summary
All Methods Static Methods Instance Methods Concrete Methods Modifier and Type Method Description booleanallowBufferDispose()voidallowBufferDispose(boolean allowBufferDispose)byte[]array()Returns the byte array that backs this buffer (optional operation).intarrayOffset()Returns the offset within this buffer's backing array of the first element of the buffer (optional operation).HeapBufferasReadOnlyBuffer()Creates a new, read-onlyBufferthat shares this buffer's content.intcapacity()Returns this buffer's capacity.protected voidcheckDispose()HeapBufferclear()Clears this buffer.HeapBuffercompact()Compacts this buffer (optional operation).intcompareTo(Buffer o)protected HeapBuffercreateHeapBuffer(int offs, int capacity)Create a newHeapBufferbased on the current heap.voiddispose()Notify the allocator that the space for this Buffer is no longer needed.voiddumpHex(Appendable appendable)Generate a hex dump of thisBuffer's content.HeapBufferduplicate()Creates a newBufferthat shares this buffer's content.booleanequals(Object obj)HeapBufferflip()Flips this buffer.byteget()Relative get method.HeapBufferget(byte[] dst)Relative bulk get method.HeapBufferget(byte[] dst, int offset, int length)Relative bulk get method.byteget(int index)Absolute get method.Bufferget(ByteBuffer dst)Relative bulk get method.Bufferget(ByteBuffer dst, int position, int length)Relative bulk get method.chargetChar()Relative get method for reading a char value.chargetChar(int index)Absolute get method for reading a char value.doublegetDouble()Relative get method for reading a double value.doublegetDouble(int index)Absolute get method for reading a double value.floatgetFloat()Relative get method for reading a float value.floatgetFloat(int index)Absolute get method for reading a float value.intgetInt()Relative get method for reading an int value.intgetInt(int index)Absolute get method for reading an int value.longgetLong()Relative get method for reading a long value.longgetLong(int index)Absolute get method for reading a long value.shortgetShort()Relative get method for reading a short value.shortgetShort(int index)Absolute get method for reading a short value.booleanhasArray()Tells whether or not this buffer is backed by an accessible byte array.inthashCode()booleanhasRemaining()Tells whether there are any elements between the current position and the limit.booleanisComposite()booleanisDirect()Tells whether or not this buffer is direct.booleanisExternal()Returns true if the message represents an external resource (for exampleFileTransfer), which is not loaded in memory.booleanisReadOnly()Tells whether or not this buffer is read-only.intlimit()Returns this buffer's limit.HeapBufferlimit(int newLimit)Sets this buffer's limit.HeapBuffermark()Sets this buffer's mark at its position.protected voidonShareHeap()ByteOrderorder()Retrieves this buffer's byte order.HeapBufferorder(ByteOrder bo)Modifies this buffer's byte order.intposition()Returns this buffer's position.HeapBufferposition(int newPosition)Sets this buffer's position.protected voidprepareDispose()HeapBufferprepend(Buffer header)Prepend data from header.position() to header.limit() to the current buffer.HeapBufferput(byte b)Relative put method (optional operation).HeapBufferput(byte[] src)Relative bulk put method (optional operation).HeapBufferput(byte[] src, int offset, int length)Relative bulk put method (optional operation).HeapBufferput(int index, byte b)Absolute put method (optional operation).Bufferput(ByteBuffer src)Relative bulk put method (optional operation).Bufferput(ByteBuffer src, int position, int length)Relative bulk put method (optional operation).HeapBufferput(Buffer src)Relative bulk put method (optional operation).HeapBufferput(Buffer src, int position, int length)Relative bulk put method (optional operation).HeapBufferput8BitString(String s)Relative bulk put method (optional operation).HeapBufferputChar(char value)Relative put method for writing a char value (optional operation).HeapBufferputChar(int index, char value)Absolute put method for writing a char value (optional operation).HeapBufferputDouble(double value)Relative put method for writing a double value (optional operation).HeapBufferputDouble(int index, double value)Absolute put method for writing a double value (optional operation).HeapBufferputFloat(float value)Relative put method for writing a float value (optional operation).HeapBufferputFloat(int index, float value)Absolute put method for writing a float value (optional operation).HeapBufferputInt(int value)Relative put method for writing an int value (optional operation).HeapBufferputInt(int index, int value)Absolute put method for writing an int value (optional operation).HeapBufferputLong(int index, long value)Absolute put method for writing a long value (optional operation).HeapBufferputLong(long value)Relative put method for writing a long value (optional operation).HeapBufferputShort(int index, short value)Absolute put method for writing a short value (optional operation).HeapBufferputShort(short value)Relative put method for writing a short value (optional operation).booleanrelease()Perform message specific actions to release resources held by the entity backing thisWritableMessage.intremaining()Returns the number of elements between the current position and the limit.HeapBufferreset()Resets this buffer's position to the previously-marked position.HeapBufferrewind()Rewinds this buffer.voidshrink()Disposes the buffer part, outside [position, limit] interval if possible.HeapBufferslice()Creates a newBufferwhose content is a shared subsequence of this buffer's content.HeapBufferslice(int position, int limit)Creates a newBufferwhose content is a shared subsequence of this buffer's content.Buffersplit(int splitPosition)Split up the buffer into two parts: [0..splitPosition) and [splitPosition, capacity).BufferArraytoBufferArray()BufferArraytoBufferArray(int position, int limit)BufferArraytoBufferArray(BufferArray array)Returns the specifiedBufferArrayafter adding thisBuffer.BufferArraytoBufferArray(BufferArray array, int position, int limit)ByteBuffertoByteBuffer()Converts thisBufferto aByteBuffer.ByteBuffertoByteBuffer(int position, int limit)Converts thisBufferto aByteBuffer.protected ByteBuffertoByteBuffer0(int pos, int lim, boolean slice)ByteBufferArraytoByteBufferArray()Converts thisBufferto aByteBufferperBuffer.toByteBuffer()and returns aByteBufferArraycontaining the convertedByteBuffer.ByteBufferArraytoByteBufferArray(int position, int limit)Converts thisBufferto aByteBufferperBuffer.toByteBuffer(int, int)and returns aByteBufferArraycontaining the convertedByteBuffer.ByteBufferArraytoByteBufferArray(ByteBufferArray array)Converts thisBufferto aByteBufferperBuffer.toByteBuffer()and adds the result to the providedByteBufferArray.ByteBufferArraytoByteBufferArray(ByteBufferArray array, int position, int limit)Converts thisBufferto aByteBufferperBuffer.toByteBuffer(int, int)and adds the result to the providedByteBufferArray.StringtoString()StringtoStringContent()StringtoStringContent(Charset charset)StringtoStringContent(Charset charset, int position, int limit)voidtrim()Trim the buffer by reducing capacity to position, if possible.booleantryDispose()Try to dispose Buffer if it's allowed.ByteBufferunderlying()Return the underlying bufferstatic HeapBufferwrap(byte[] heap)static HeapBufferwrap(byte[] heap, int off, int len)
-
-
-
Field Detail
-
DEBUG_MODE
public static volatile boolean DEBUG_MODE
-
allowBufferDispose
protected boolean allowBufferDispose
-
disposeStackTrace
protected Exception disposeStackTrace
-
heap
protected byte[] heap
-
offset
protected int offset
-
pos
protected int pos
-
cap
protected int cap
-
lim
protected int lim
-
mark
protected int mark
-
readOnly
protected boolean readOnly
-
order
protected ByteOrder order
-
bigEndian
protected boolean bigEndian
-
byteBuffer
protected ByteBuffer byteBuffer
-
-
Method Detail
-
isComposite
public final boolean isComposite()
- Specified by:
isCompositein interfaceBuffer- Returns:
trueif thisBufferrepresents a composite of individualBufferinstances.
-
prepend
public HeapBuffer prepend(Buffer header)
Description copied from interface:BufferPrepend data from header.position() to header.limit() to the current buffer. This will change the value returned by buffer()!
-
trim
public void trim()
Description copied from interface:BufferTrim the buffer by reducing capacity to position, if possible. May return without changing capacity. Also resets the position to 0, likeBuffer.flip().
-
shrink
public void shrink()
Description copied from interface:BufferDisposes the buffer part, outside [position, limit] interval if possible. May return without changing capacity. After shrink is called, position/limit/capacity values may have different values, than before, but still point to the same Buffer elements.
-
allowBufferDispose
public final boolean allowBufferDispose()
- Specified by:
allowBufferDisposein interfaceBuffer
-
allowBufferDispose
public final void allowBufferDispose(boolean allowBufferDispose)
- Specified by:
allowBufferDisposein interfaceBuffer
-
tryDispose
public final boolean tryDispose()
Description copied from interface:BufferTry to dispose Buffer if it's allowed.- Specified by:
tryDisposein interfaceBuffer- Returns:
- true if successfully disposed
-
dispose
public void dispose()
Description copied from interface:BufferNotify the allocator that the space for this Buffer is no longer needed. All calls to methods on a Buffer will fail after a call to dispose().
-
prepareDispose
protected final void prepareDispose()
-
underlying
public ByteBuffer underlying()
Description copied from interface:BufferReturn the underlying buffer- Specified by:
underlyingin interfaceBuffer- Returns:
- the underlying buffer
-
capacity
public final int capacity()
Description copied from interface:BufferReturns this buffer's capacity.
-
position
public final int position()
Description copied from interface:BufferReturns this buffer's position.
-
position
public final HeapBuffer position(int newPosition)
Description copied from interface:BufferSets this buffer's position. If the mark is defined and larger than the new position then it is discarded.
-
limit
public final int limit()
Description copied from interface:BufferReturns this buffer's limit.
-
limit
public final HeapBuffer limit(int newLimit)
Description copied from interface:BufferSets this buffer's limit. If the position is larger than the new limit then it is set to the new limit. If the mark is defined and larger than the new limit then it is discarded.
-
mark
public final HeapBuffer mark()
Description copied from interface:BufferSets this buffer's mark at its position.
-
reset
public final HeapBuffer reset()
Description copied from interface:BufferResets this buffer's position to the previously-marked position.Invoking this method neither changes nor discards the mark's value.
-
clear
public final HeapBuffer clear()
Description copied from interface:BufferClears this buffer. The position is set to zero, the limit is set to the capacity, and the mark is discarded.Invoke this method before using a sequence of channel-read or put operations to fill this buffer. For example:
buf.clear(); // Prepare buffer for reading in.read(buf); // Read data
This method does not actually erase the data in the buffer, but it is named as if it did because it will most often be used in situations in which that might as well be the case.
-
flip
public final HeapBuffer flip()
Description copied from interface:BufferFlips this buffer. The limit is set to the current position and then the position is set to zero. If the mark is defined then it is discarded.After a sequence of channel-read or put operations, invoke this method to prepare for a sequence of channel-write or relative get operations. For example:
buf.put(magic); // Prepend header in.read(buf); // Read data into rest of buffer buf.flip(); // Flip buffer out.write(buf); // Write header + data to channel
This method is often used in conjunction with the
compactmethod when transferring data from one place to another.
-
rewind
public final HeapBuffer rewind()
Description copied from interface:BufferRewinds this buffer. The position is set to zero and the mark is discarded.Invoke this method before a sequence of channel-write or get operations, assuming that the limit has already been set appropriately. For example:
out.write(buf); // Write remaining data buf.rewind(); // Rewind buffer buf.get(array); // Copy data into array
-
remaining
public final int remaining()
Description copied from interface:BufferReturns the number of elements between the current position and the limit.- Specified by:
remainingin interfaceBuffer- Specified by:
remainingin interfaceWritableMessage- Returns:
- The number of elements remaining in this buffer
-
hasRemaining
public final boolean hasRemaining()
Description copied from interface:BufferTells whether there are any elements between the current position and the limit.- Specified by:
hasRemainingin interfaceBuffer- Specified by:
hasRemainingin interfaceWritableMessage- Returns:
- true if, and only if, there is at least one element remaining in this buffer
-
isReadOnly
public boolean isReadOnly()
Description copied from interface:BufferTells whether or not this buffer is read-only.- Specified by:
isReadOnlyin interfaceBuffer- Returns:
- true if, and only if, this buffer is read-only
-
isDirect
public final boolean isDirect()
Description copied from interface:BufferTells whether or not this buffer is direct.
-
split
public Buffer split(int splitPosition)
Split up the buffer into two parts: [0..splitPosition) and [splitPosition, capacity). This Buffer will represent the first part: [0..splitPosition) and returned Buffer will represent the second part: [splitPosition, capacity). Splitting a buffer will reset the mark if the mark is greater than or equal to thesplitPosition.
-
slice
public HeapBuffer slice()
Description copied from interface:BufferCreates a newBufferwhose content is a shared subsequence of this buffer's content.The content of the new buffer will start at this buffer's current position. Changes to this buffer's content will be visible in the new buffer, and vice versa; the two buffers' position, limit, and mark values will be independent.
The new buffer's position will be zero, its capacity and its limit will be the number of bytes remaining in this buffer, and its mark will be undefined. The new buffer will be direct if, and only if, this buffer is direct, and it will be read-only if, and only if, this buffer is read-only.
-
slice
public HeapBuffer slice(int position, int limit)
Description copied from interface:BufferCreates a newBufferwhose content is a shared subsequence of this buffer's content.The content of the new buffer will start at passed position and end at passed limit. Changes to this buffer's content will be visible in the new buffer, and vice versa; the two buffer's position, limit, and mark values will be independent.
The new buffer's position will be zero, its capacity and its limit will be the number of bytes remaining in this buffer, and its mark will be undefined. The new buffer will be direct if, and only if, this buffer is direct, and it will be read-only if, and only if, this buffer is read-only.
-
duplicate
public HeapBuffer duplicate()
Description copied from interface:BufferCreates a newBufferthat shares this buffer's content.The content of the new buffer will be that of this buffer. Changes to this buffer's content will be visible in the new buffer, and vice versa; the two buffer's position, limit, and mark values will be independent.
The new buffer's capacity, limit, position, and mark values will be identical to those of this buffer. The new buffer will be direct if, and only if, this buffer is direct, and it will be read-only if, and only if, this buffer is read-only.
-
asReadOnlyBuffer
public HeapBuffer asReadOnlyBuffer()
Description copied from interface:BufferCreates a new, read-onlyBufferthat shares this buffer's content.The content of the new buffer will be that of this buffer. Changes to this buffer's content will be visible in the new buffer; the new buffer itself, however, will be read-only and will not allow the shared content to be modified. The two buffer's position, limit, and mark values will be independent.
The new buffer's capacity, limit, position, and mark values will be identical to those of this buffer.
If this buffer is itself read-only then this method behaves in exactly the same way as the
duplicatemethod.- Specified by:
asReadOnlyBufferin interfaceBuffer- Returns:
- The new, read-only
Buffer
-
get
public byte get()
Description copied from interface:BufferRelative get method. Reads the byte at this buffer's current position, and then increments the position.
-
get
public byte get(int index)
Description copied from interface:BufferAbsolute get method. Reads the byte at the given index.
-
put
public HeapBuffer put(byte b)
Description copied from interface:BufferRelative put method (optional operation).Writes the given byte into this buffer at the current position, and then increments the position.
-
put
public HeapBuffer put(int index, byte b)
Description copied from interface:BufferAbsolute put method (optional operation).Writes the given byte into this buffer at the given index.
-
get
public HeapBuffer get(byte[] dst)
Description copied from interface:BufferRelative bulk get method.This method transfers bytes from this buffer into the given destination array. An invocation of this method of the form src.get(a) behaves in exactly the same way as the invocation
src.get(a, 0, a.length)
-
get
public HeapBuffer get(byte[] dst, int offset, int length)
Description copied from interface:BufferRelative bulk get method.This method transfers bytes from this buffer into the given destination array. If there are fewer bytes remaining in the buffer than are required to satisfy the request, that is, if length > remaining(), then no bytes are transferred and a
BufferUnderflowExceptionis thrown.Otherwise, this method copies length bytes from this buffer into the given array, starting at the current position of this buffer and at the given offset in the array. The position of this buffer is then incremented by length.
In other words, an invocation of this method of the form src.get(dst, off, len) has exactly the same effect as the loop
for (int i = off; i < off + len; i++) dst[i] = src.get();except that it first checks that there are sufficient bytes in this buffer and it is potentially much more efficient.- Specified by:
getin interfaceBuffer- Parameters:
dst- The array into which bytes are to be writtenoffset- The offset within the array of the first byte to be written; must be non-negative and no larger than dst.lengthlength- The maximum number of bytes to be written to the given array; must be non-negative and no larger than dst.length - offset- Returns:
- This buffer
-
put
public HeapBuffer put(Buffer src)
Description copied from interface:BufferRelative bulk put method (optional operation).This method transfers the bytes remaining in the given source buffer into this buffer. If there are more bytes remaining in the source buffer than in this buffer, that is, if src.remaining() > remaining(), then no bytes are transferred and a
BufferOverflowExceptionis thrown.Otherwise, this method copies n = src.remaining() bytes from the given buffer into this buffer, starting at each buffer's current position. The positions of both buffers are then incremented by n.
In other words, an invocation of this method of the form dst.put(src) has exactly the same effect as the loop
while (src.hasRemaining()) dst.put(src.get());except that it first checks that there is sufficient space in this buffer and it is potentially much more efficient.
-
put
public HeapBuffer put(Buffer src, int position, int length)
Description copied from interface:BufferRelative bulk put method (optional operation).This method transfers the "length" bytes from the given source buffer into this buffer. If this buffer has less bytes remaining than length, that is, if length > remaining(), then no bytes are transferred and a
BufferOverflowExceptionis thrown.Otherwise, this method copies n = length bytes from the given position in the source buffer into this buffer, starting from the current buffer position. The positions of this buffer is then incremented by length.
In other words, an invocation of this method of the form dst.put(src, position, length) has exactly the same effect as the loop
for (int i = 0; i < length; i++) dst.put(src.get(i + position));except that it first checks that there is sufficient space in this buffer and it is potentially much more efficient.
-
get
public Buffer get(ByteBuffer dst)
Description copied from interface:BufferRelative bulk get method.This method transfers bytes from this buffer into the given destination
ByteBuffer. An invocation of this method of the form src.get(a) behaves in exactly the same way as the invocationsrc.get(a, 0, a.remaining())
- Specified by:
getin interfaceBuffer- Parameters:
dst- destinationByteBufferto put the data into- Returns:
- This buffer
-
get
public Buffer get(ByteBuffer dst, int position, int length)
Description copied from interface:BufferRelative bulk get method.This method transfers bytes from this buffer into the given destination
ByteBuffer. If there are fewer bytes remaining in the buffer than are required to satisfy the request, that is, if length > remaining(), then no bytes are transferred and aBufferUnderflowExceptionis thrown.Otherwise, this method copies length bytes from this buffer into the given
ByteBuffer, starting at the current position of this buffer and at the given offset in theByteBuffer. The position of this buffer is then incremented by length.In other words, an invocation of this method of the form src.get(dst, off, len) has exactly the same effect as the loop
for (int i = off; i < off + len; i++) dst.put(i) = src.get();except that it first checks that there are sufficient bytes in this buffer and it is potentially much more efficient.- Specified by:
getin interfaceBuffer- Parameters:
dst- TheByteBufferinto which bytes are to be writtenposition- The offset within theByteBufferof the first byte to be written; must be non-negative and no larger than dst.remaining()length- The maximum number of bytes to be written to the given array; must be non-negative and no larger than dst.remaining() - offset- Returns:
- This buffer
-
put
public Buffer put(ByteBuffer src)
Description copied from interface:BufferRelative bulk put method (optional operation).This method transfers the bytes remaining in the given source buffer into this buffer. If there are more bytes remaining in the source buffer than in this buffer, that is, if src.remaining() > remaining(), then no bytes are transferred and a
BufferOverflowExceptionis thrown.Otherwise, this method copies n = src.remaining() bytes from the given buffer into this buffer, starting at each buffer's current position. The positions of both buffers are then incremented by n.
In other words, an invocation of this method of the form dst.put(src) has exactly the same effect as the loop
while (src.hasRemaining()) dst.put(src.get());except that it first checks that there is sufficient space in this buffer and it is potentially much more efficient.
-
put
public Buffer put(ByteBuffer src, int position, int length)
Description copied from interface:BufferRelative bulk put method (optional operation).This method transfers the "length" bytes from the given source buffer into this buffer. If this buffer has less bytes remaining than length, that is, if length > remaining(), then no bytes are transferred and a
BufferOverflowExceptionis thrown.Otherwise, this method copies n = length bytes from the given position in the source buffer into this buffer, starting from the current buffer position. The positions of this buffer is then incremented by length.
In other words, an invocation of this method of the form dst.put(src, position, length) has exactly the same effect as the loop
for (int i = 0; i < length; i++) dst.put(src.get(i + position));except that it first checks that there is sufficient space in this buffer and it is potentially much more efficient.
-
wrap
public static HeapBuffer wrap(byte[] heap)
-
wrap
public static HeapBuffer wrap(byte[] heap, int off, int len)
-
put
public HeapBuffer put(byte[] src)
Description copied from interface:BufferRelative bulk put method (optional operation).This method transfers the entire content of the given source byte array into this buffer. An invocation of this method of the form dst.put(a) behaves in exactly the same way as the invocation
dst.put(a, 0, a.length)
-
put
public HeapBuffer put(byte[] src, int offset, int length)
Description copied from interface:BufferRelative bulk put method (optional operation).This method transfers bytes into this buffer from the given source array. If there are more bytes to be copied from the array than remain in this buffer, that is, if length > remaining(), then no bytes are transferred and a
BufferOverflowExceptionis thrown.Otherwise, this method copies length bytes from the given array into this buffer, starting at the given offset in the array and at the current position of this buffer. The position of this buffer is then incremented by length.
In other words, an invocation of this method of the form dst.put(src, off, len) has exactly the same effect as the loop
for (int i = off; i < off + len; i++) dst.put(a[i]);except that it first checks that there is sufficient space in this buffer and it is potentially much more efficient.- Specified by:
putin interfaceBuffer- Parameters:
src- The array from which bytes are to be readoffset- The offset within the array of the first byte to be read; must be non-negative and no larger than array.lengthlength- The number of bytes to be read from the given array; must be non-negative and no larger than array.length - offset- Returns:
- This buffer
-
put8BitString
public HeapBuffer put8BitString(String s)
Description copied from interface:BufferRelative bulk put method (optional operation).This method transfers bytes into this buffer from the given 8-bit source
String. If the sourceString.length()is bigger than this buffer's remaining, that is, if length() > remaining(), then no bytes are transferred and aBufferOverflowExceptionis thrown.Otherwise, this method copies length bytes from the given
Stringinto this buffer.In other words, an invocation of this method of the form dst.put8BitString(src) has exactly the same effect as the loop
for (int i = 0; i < src.length(); i++) dst.put((byte) src.charAt(i));except that it first checks that there is sufficient space in this buffer and it is potentially much more efficient.- Specified by:
put8BitStringin interfaceBuffer- Parameters:
s- TheStringfrom which bytes are to be read- Returns:
- This buffer
-
compact
public HeapBuffer compact()
Description copied from interface:BufferCompacts this buffer (optional operation).The bytes between the buffer's current position and its limit, if any, are copied to the beginning of the buffer. That is, the byte at index p = position() is copied to index zero, the byte at index p + 1 is copied to index one, and so forth until the byte at index limit() - 1 is copied to index n = limit() - 1 - p. The buffer's position is then set to n+1 and its limit is set to its capacity. The mark, if defined, is discarded.
The buffer's position is set to the number of bytes copied, rather than to zero, so that an invocation of this method can be followed immediately by an invocation of another relative put method.
Invoke this method after writing data from a buffer in case the write was incomplete. The following loop, for example, copies bytes from one channel to another via the buffer buf:
buf.clear(); // Prepare buffer for use for (;;) { if (in.read(buf) < 0 && !buf.hasRemaining()) break; // No more bytes to transfer buf.flip(); out.write(buf); buf.compact(); // In case of partial write }
-
order
public ByteOrder order()
Description copied from interface:BufferRetrieves this buffer's byte order.The byte order is used when reading or writing multibyte values, and when creating buffers that are views of this
Buffer. The order of a newly-createdBufferis alwaysBIG_ENDIAN.
-
order
public HeapBuffer order(ByteOrder bo)
Description copied from interface:BufferModifies this buffer's byte order.- Specified by:
orderin interfaceBuffer- Parameters:
bo- The new byte order, eitherBIG_ENDIANorLITTLE_ENDIAN- Returns:
- This buffer
-
getChar
public char getChar()
Description copied from interface:BufferRelative get method for reading a char value.Reads the next two bytes at this buffer's current position, composing them into a char value according to the current byte order, and then increments the position by two.
-
getChar
public char getChar(int index)
Description copied from interface:BufferAbsolute get method for reading a char value.Reads two bytes at the given index, composing them into a char value according to the current byte order.
-
putChar
public HeapBuffer putChar(char value)
Description copied from interface:BufferRelative put method for writing a char value (optional operation).Writes two bytes containing the given char value, in the current byte order, into this buffer at the current position, and then increments the position by two.
-
putChar
public HeapBuffer putChar(int index, char value)
Description copied from interface:BufferAbsolute put method for writing a char value (optional operation).Writes two bytes containing the given char value, in the current byte order, into this buffer at the given index.
-
getShort
public short getShort()
Description copied from interface:BufferRelative get method for reading a short value.Reads the next two bytes at this buffer's current position, composing them into a short value according to the current byte order, and then increments the position by two.
-
getShort
public short getShort(int index)
Description copied from interface:BufferAbsolute get method for reading a short value.Reads two bytes at the given index, composing them into a short value according to the current byte order.
-
putShort
public HeapBuffer putShort(short value)
Description copied from interface:BufferRelative put method for writing a short value (optional operation).Writes two bytes containing the given short value, in the current byte order, into this buffer at the current position, and then increments the position by two.
-
putShort
public HeapBuffer putShort(int index, short value)
Description copied from interface:BufferAbsolute put method for writing a short value (optional operation).Writes two bytes containing the given short value, in the current byte order, into this buffer at the given index.
-
getInt
public int getInt()
Description copied from interface:BufferRelative get method for reading an int value.Reads the next four bytes at this buffer's current position, composing them into an int value according to the current byte order, and then increments the position by four.
-
getInt
public int getInt(int index)
Description copied from interface:BufferAbsolute get method for reading an int value.Reads four bytes at the given index, composing them into a int value according to the current byte order.
-
putInt
public HeapBuffer putInt(int value)
Description copied from interface:BufferRelative put method for writing an int value (optional operation).Writes four bytes containing the given int value, in the current byte order, into this buffer at the current position, and then increments the position by four.
-
putInt
public HeapBuffer putInt(int index, int value)
Description copied from interface:BufferAbsolute put method for writing an int value (optional operation).Writes four bytes containing the given int value, in the current byte order, into this buffer at the given index.
-
getLong
public long getLong()
Description copied from interface:BufferRelative get method for reading a long value.Reads the next eight bytes at this buffer's current position, composing them into a long value according to the current byte order, and then increments the position by eight.
-
getLong
public long getLong(int index)
Description copied from interface:BufferAbsolute get method for reading a long value.Reads eight bytes at the given index, composing them into a long value according to the current byte order.
-
putLong
public HeapBuffer putLong(long value)
Description copied from interface:BufferRelative put method for writing a long value (optional operation).Writes eight bytes containing the given long value, in the current byte order, into this buffer at the current position, and then increments the position by eight.
-
putLong
public HeapBuffer putLong(int index, long value)
Description copied from interface:BufferAbsolute put method for writing a long value (optional operation).Writes eight bytes containing the given long value, in the current byte order, into this buffer at the given index.
-
getFloat
public float getFloat()
Description copied from interface:BufferRelative get method for reading a float value.Reads the next four bytes at this buffer's current position, composing them into a float value according to the current byte order, and then increments the position by four.
-
getFloat
public float getFloat(int index)
Description copied from interface:BufferAbsolute get method for reading a float value.Reads four bytes at the given index, composing them into a float value according to the current byte order.
-
putFloat
public HeapBuffer putFloat(float value)
Description copied from interface:BufferRelative put method for writing a float value (optional operation).Writes four bytes containing the given float value, in the current byte order, into this buffer at the current position, and then increments the position by four.
-
putFloat
public HeapBuffer putFloat(int index, float value)
Description copied from interface:BufferAbsolute put method for writing a float value (optional operation).Writes four bytes containing the given float value, in the current byte order, into this buffer at the given index.
-
getDouble
public double getDouble()
Description copied from interface:BufferRelative get method for reading a double value.Reads the next eight bytes at this buffer's current position, composing them into a double value according to the current byte order, and then increments the position by eight.
-
getDouble
public double getDouble(int index)
Description copied from interface:BufferAbsolute get method for reading a double value.Reads eight bytes at the given index, composing them into a double value according to the current byte order.
-
putDouble
public HeapBuffer putDouble(double value)
Description copied from interface:BufferRelative put method for writing a double value (optional operation).Writes eight bytes containing the given double value, in the current byte order, into this buffer at the current position, and then increments the position by eight.
-
putDouble
public HeapBuffer putDouble(int index, double value)
Description copied from interface:BufferAbsolute put method for writing a double value (optional operation).Writes eight bytes containing the given double value, in the current byte order, into this buffer at the given index.
-
compareTo
public int compareTo(Buffer o)
- Specified by:
compareToin interfaceComparable<Buffer>
-
checkDispose
protected void checkDispose()
-
toStringContent
public String toStringContent()
Description copied from interface:Buffer- Specified by:
toStringContentin interfaceBuffer- Returns:
Stringrepresentation of thisBuffercontent.
-
toStringContent
public String toStringContent(Charset charset)
Description copied from interface:Buffer
-
toStringContent
public String toStringContent(Charset charset, int position, int limit)
Description copied from interface:Buffer- Specified by:
toStringContentin interfaceBuffer- Parameters:
charset- theCharset, which will be use for byte[] ->Stringtransformation.position- the first byte offset in the Buffer (inclusive)limit- the last byte offset in the Buffer (exclusive)- Returns:
Stringrepresentation of part of thisBuffer.
-
dumpHex
public void dumpHex(Appendable appendable)
Generate a hex dump of thisBuffer's content.- Specified by:
dumpHexin interfaceBuffer- Parameters:
appendable- theAppendableto dump thisBuffer's content to.
-
toByteBuffer
public ByteBuffer toByteBuffer()
Converts this
Bufferto aByteBuffer. If thisBufferis not composite - then returnedByteBuffer's content is a shared subsequence of this buffer's content, withCompositeBufferthis is not guaranteed. The position of the returnedByteBufferis not guaranteed to be 0, the capacity of the returnedByteBufferis not guaranteed to be equal to the capacity of thisBuffer. It is guaranteed that the result of the returned ByteBuffer'sBuffer.remaining()call will be equal to this Buffer'sBuffer.remaining()call. The Buffer's and ByteBuffer's position, limit, and mark values are not guaranteed to be independent, so it's recommended to save and restore position, limit values if it is planned to change them orByteBuffer.slice()the returnedByteBuffer.- Specified by:
toByteBufferin interfaceBuffer- Returns:
- this
Bufferas aByteBuffer.
-
toByteBuffer
public ByteBuffer toByteBuffer(int position, int limit)
Converts this
Bufferto aByteBuffer. If thisBufferis not composite - then returnedByteBuffer's content is a shared subsequence of this buffer's content, withCompositeBufferthis is not guaranteed. The position of the returnedByteBufferis not guaranteed to be 0, the capacity of the returnedByteBufferis not guaranteed to be equal to the capacity of thisBuffer. It is guaranteed that the result of the returned ByteBuffer'sBuffer.remaining()call will be equal (limit - position). The Buffer's and ByteBuffer's position, limit, and mark values are not guaranteed to be independent, so it's recommended to save and restore position, limit values if it is planned to change them orByteBuffer.slice()the returnedByteBuffer.- Specified by:
toByteBufferin interfaceBuffer- Parameters:
position- the position for the starting subsequence for the returnedByteBuffer.limit- the limit for the ending of the subsequence of the returnedByteBuffer.- Returns:
- this
Bufferas aByteBuffer.
-
toByteBufferArray
public final ByteBufferArray toByteBufferArray()
Converts this
Bufferto aByteBufferperBuffer.toByteBuffer()and returns aByteBufferArraycontaining the convertedByteBuffer. It is guaranteed that returned array's ByteBuffer elements' content is a shared subsequence of this buffer's content no matter if it's aCompositeBufferor not.- Specified by:
toByteBufferArrayin interfaceBuffer- Returns:
- Converts this
Bufferto aByteBufferperBuffer.toByteBuffer()and returns aByteBufferArraycontaining the convertedByteBuffer. - See Also:
Buffer.toByteBuffer()
-
toByteBufferArray
public final ByteBufferArray toByteBufferArray(int position, int limit)
Converts this
Bufferto aByteBufferperBuffer.toByteBuffer(int, int)and returns aByteBufferArraycontaining the convertedByteBuffer. It is guaranteed that returned array's ByteBuffer elements' content is a shared subsequence of this buffer's content no matter if it's aCompositeBufferor not.- Specified by:
toByteBufferArrayin interfaceBuffer- Parameters:
position- the start position within the sourcebufferlimit- the limit, or number, of bytes to include in the resultingByteBuffer- Returns:
- Converts this
Bufferto aByteBufferperBuffer.toByteBuffer(int, int)and returns aByteBufferArraycontaining the convertedByteBuffer. - See Also:
Buffer.toByteBuffer(int, int)
-
toByteBufferArray
public final ByteBufferArray toByteBufferArray(ByteBufferArray array)
Converts this
Bufferto aByteBufferperBuffer.toByteBuffer()and adds the result to the providedByteBufferArray. It is guaranteed that returned array's ByteBuffer elements' content is a shared subsequence of this buffer's content no matter if it's aCompositeBufferor not.- Specified by:
toByteBufferArrayin interfaceBuffer- Parameters:
array- this buffer as aByteBufferArray- Returns:
- returns the provided
ByteBufferArraywith the convertedByteBufferadded to providedarray. - See Also:
Buffer.toByteBuffer()
-
toByteBufferArray
public final ByteBufferArray toByteBufferArray(ByteBufferArray array, int position, int limit)
Converts this
Bufferto aByteBufferperBuffer.toByteBuffer(int, int)and adds the result to the providedByteBufferArray. It is guaranteed that returned array's ByteBuffer elements' content is a shared subsequence of this buffer's content no matter if it's aCompositeBufferor not.- Specified by:
toByteBufferArrayin interfaceBuffer- Parameters:
array- theByteBufferArrayto append this toposition- the start position within the sourcebufferlimit- the limit, or number, of bytes to include in the resultingByteBuffer- Returns:
- returns the provided
ByteBufferArraywith the convertedByteBufferadded to providedarray. - See Also:
Buffer.toByteBuffer(int, int)
-
toBufferArray
public final BufferArray toBufferArray()
Returns a new
BufferArrayinstance with thisBufferadded as an element to theBufferArray. It is guaranteed that returned array's Buffer elements' content is a shared subsequence of this buffer's content no matter if it's aCompositeBufferor not.- Specified by:
toBufferArrayin interfaceBuffer- Returns:
- Returns a new
BufferArrayinstance with thisBufferadded as an element to theBufferArray.
-
toBufferArray
public final BufferArray toBufferArray(int position, int limit)
Updates this
Buffer'spositionandlimitand adds it to a newBufferArrayinstance. It is guaranteed that returned array's Buffer elements' content is a shared subsequence of this buffer's content no matter if it's aCompositeBufferor not.- Specified by:
toBufferArrayin interfaceBuffer- Parameters:
position- the new position for thisBufferlimit- the new limit for thisBuffer- Returns:
- adds this
Bufferand returns the specifiedBufferArray.
-
toBufferArray
public final BufferArray toBufferArray(BufferArray array)
Returns the specified
BufferArrayafter adding thisBuffer. It is guaranteed that returned array's Buffer elements' content is a shared subsequence of this buffer's content no matter if it's aCompositeBufferor not.- Specified by:
toBufferArrayin interfaceBuffer- Parameters:
array- the base array to append to- Returns:
- Returns the specified
BufferArrayafter adding thisBuffer.
-
toBufferArray
public final BufferArray toBufferArray(BufferArray array, int position, int limit)
Updates this
Buffer'spositionandlimitand adds it to the specifiedBufferArray. It is guaranteed that returned array's Buffer elements' content is a shared subsequence of this buffer's content no matter if it's aCompositeBufferor not.- Specified by:
toBufferArrayin interfaceBuffer- Parameters:
array- theBufferArrayto prepend toposition- the new position for thisBufferlimit- the new limit for thisBuffer- Returns:
- adds this
Bufferand returns the specifiedBufferArray.
-
release
public boolean release()
Description copied from interface:WritableMessagePerform message specific actions to release resources held by the entity backing thisWritableMessage.- Specified by:
releasein interfaceWritableMessage- Returns:
- true if successfully released
-
isExternal
public boolean isExternal()
Returns true if the message represents an external resource (for exampleFileTransfer), which is not loaded in memory.- Specified by:
isExternalin interfaceWritableMessage- Returns:
- False, if the message is located in memory (like
Buffer).
-
hasArray
public boolean hasArray()
Description copied from interface:BufferTells whether or not this buffer is backed by an accessible byte array. If this method returns true then the array and arrayOffset methods may safely be invoked.
-
arrayOffset
public int arrayOffset()
Description copied from interface:BufferReturns the offset within this buffer's backing array of the first element of the buffer (optional operation). If this buffer is backed by an array then buffer position p corresponds to array index p + arrayOffset(). Invoke the hasArray method before invoking this method in order to ensure that this buffer has an accessible backing array.- Specified by:
arrayOffsetin interfaceBuffer- Returns:
- The offset within this buffer's array of the first element of the buffer
-
array
public byte[] array()
Description copied from interface:BufferReturns the byte array that backs this buffer (optional operation). Modifications to this buffer's content will cause the returned array's content to be modified, and vice versa. Invoke the hasArray method before invoking this method in order to ensure that this buffer has an accessible backing array.
-
onShareHeap
protected void onShareHeap()
-
createHeapBuffer
protected HeapBuffer createHeapBuffer(int offs, int capacity)
Create a newHeapBufferbased on the current heap.- Parameters:
offs- relative offset, the absolute value will calculated as (this.offset + offs)capacity-- Returns:
-
toByteBuffer0
protected ByteBuffer toByteBuffer0(int pos, int lim, boolean slice)
-
-