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[multiple changes]

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2005-04-20  Sven de Marothy  <sven@physto.se>

	* java/nio/ByteBufferImpl.java:
	(putChar): Inlined for speed.
	(put, get): Bulk methods can use arraycopy.
	* java/nio/CharBufferImpl.java:
	(put, get): Bulk methods can use arraycopy.

2005-04-20  Jeroen Frijters  <jeroen@frijters.net>

	* java/nio/ByteBufferImpl.java (get(), put(byte)): Inlined checks
	and field updates.
	* java/nio/CharBufferImpl.java
	(CharBufferImpl(CharBufferImpl)): Copy array_offset field.
	(get(), put(char)): Inlined checks and field updates. Fixed to
	take array_offset into account.
	(get(int), put(int, char)): Fixed to take array_offset into account.

From-SVN: r98445
This commit is contained in:
Michael Koch 2005-04-20 06:05:04 +00:00
parent ce254988cf
commit ebce970d7f
3 changed files with 113 additions and 21 deletions
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18
libjava/ChangeLog
View File

@ -1,3 +1,21 @@
2005-04-20 Sven de Marothy <sven@physto.se>
* java/nio/ByteBufferImpl.java:
(putChar): Inlined for speed.
(put, get): Bulk methods can use arraycopy.
* java/nio/CharBufferImpl.java:
(put, get): Bulk methods can use arraycopy.
2005-04-20 Jeroen Frijters <jeroen@frijters.net>
* java/nio/ByteBufferImpl.java (get(), put(byte)): Inlined checks
and field updates.
* java/nio/CharBufferImpl.java
(CharBufferImpl(CharBufferImpl)): Copy array_offset field.
(get(), put(char)): Inlined checks and field updates. Fixed to
take array_offset into account.
(get(int), put(int, char)): Fixed to take array_offset into account.
2005-04-20 Sven de Marothy <sven@physto.se>
* java/text/SimpleDateFormat.java:

66
libjava/java/nio/ByteBufferImpl.java
View File

@ -144,13 +144,43 @@ final class ByteBufferImpl extends ByteBuffer
*/
public byte get ()
{
checkForUnderflow();
if (pos >= limit)
throw new BufferUnderflowException();
byte result = backing_buffer [position () + array_offset];
position (position () + 1);
return result;
return backing_buffer [(pos++) + array_offset];
}
/**
* Bulk get
*/
public ByteBuffer get (byte[] dst, int offset, int length)
{
checkArraySize(dst.length, offset, length);
if ( (limit - pos) < length) // check for overflow
throw new BufferUnderflowException();
System.arraycopy(backing_buffer, pos + array_offset,
dst, offset, length);
pos += length;
return this;
}
/**
* Relative bulk put(), overloads the ByteBuffer impl.
*/
public ByteBuffer put (byte[] src, int offset, int length)
{
if ( (limit - pos) < length) // check for overflow
throw new BufferOverflowException();
checkArraySize(src.length, offset, length);
System.arraycopy(src, offset, backing_buffer, pos + array_offset, length);
pos += length;
return this;
}
/**
* Relative put method. Writes <code>value</code> to the next position
* in the buffer.
@ -161,12 +191,12 @@ final class ByteBufferImpl extends ByteBuffer
*/
public ByteBuffer put (byte value)
{
checkIfReadOnly();
checkForOverflow();
if (readOnly)
throw new ReadOnlyBufferException();
if (pos >= limit)
throw new BufferOverflowException();
int pos = position();
backing_buffer [pos + array_offset] = value;
position (pos + 1);
backing_buffer [(pos++) + array_offset] = value;
return this;
}
@ -208,7 +238,21 @@ final class ByteBufferImpl extends ByteBuffer
public ByteBuffer putChar (char value)
{
ByteBufferHelper.putChar(this, value, order());
if (readOnly)
throw new ReadOnlyBufferException ();
if ( (limit-pos) < 2)
throw new BufferOverflowException();
if (endian == ByteOrder.LITTLE_ENDIAN)
{
backing_buffer [(pos++) + array_offset] = (byte)(value&0xFF);
backing_buffer [(pos++) + array_offset] = (byte)(value>>8);
}
else
{
backing_buffer [(pos++) + array_offset] = (byte)(value>>8);
backing_buffer [(pos++) + array_offset] = (byte)(value&0xFF);
}
return this;
}

50
libjava/java/nio/CharBufferImpl.java
View File

@ -62,6 +62,7 @@ final class CharBufferImpl extends CharBuffer
{
super (copy.capacity (), copy.limit (), copy.position (), 0);
backing_buffer = copy.backing_buffer;
array_offset = copy.array_offset;
readOnly = copy.isReadOnly ();
}
@ -127,11 +128,10 @@ final class CharBufferImpl extends CharBuffer
*/
public char get ()
{
checkForUnderflow();
if (pos >= limit)
throw new BufferUnderflowException();
char result = backing_buffer [position ()];
position (position () + 1);
return result;
return backing_buffer [(pos++) + array_offset];
}
/**
@ -142,10 +142,12 @@ final class CharBufferImpl extends CharBuffer
*/
public CharBuffer put (char value)
{
checkIfReadOnly();
backing_buffer [position ()] = value;
position (position () + 1);
if (readOnly)
throw new ReadOnlyBufferException();
if (pos >= limit)
throw new BufferOverflowException();
backing_buffer [(pos++) + array_offset] = value;
return this;
}
@ -162,9 +164,37 @@ final class CharBufferImpl extends CharBuffer
{
checkIndex(index);
return backing_buffer [index];
return backing_buffer [index + array_offset];
}
/**
* Bulk get, overloaded for speed.
*/
public CharBuffer get (char[] dst, int offset, int length)
{
checkArraySize(dst.length, offset, length);
checkForUnderflow(length);
System.arraycopy(backing_buffer, pos + array_offset,
dst, offset, length);
pos += length;
return this;
}
/**
* Bulk put, overloaded for speed.
*/
public CharBuffer put (char[] src, int offset, int length)
{
checkArraySize(src.length, offset, length);
checkForOverflow(length);
System.arraycopy(src, offset,
backing_buffer, pos + array_offset, length);
pos += length;
return this;
}
/**
* Absolute put method. Writes <code>value</code> to position
* <code>index</code> in the buffer.
@ -178,7 +208,7 @@ final class CharBufferImpl extends CharBuffer
checkIndex(index);
checkIfReadOnly();
backing_buffer [index] = value;
backing_buffer [index + array_offset] = value;
return this;
}