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Diffstat (limited to 'libjava/java/nio/DirectByteBufferImpl.java')
| -rw-r--r-- | libjava/java/nio/DirectByteBufferImpl.java | 429 |
1 files changed, 0 insertions, 429 deletions
diff --git a/libjava/java/nio/DirectByteBufferImpl.java b/libjava/java/nio/DirectByteBufferImpl.java deleted file mode 100644 index dd40d5a..0000000 --- a/libjava/java/nio/DirectByteBufferImpl.java +++ /dev/null @@ -1,429 +0,0 @@ -/* DirectByteBufferImpl.java -- - Copyright (C) 2003, 2004 Free Software Foundation, Inc. - -This file is part of GNU Classpath. - -GNU Classpath is free software; you can redistribute it and/or modify -it under the terms of the GNU General Public License as published by -the Free Software Foundation; either version 2, or (at your option) -any later version. - -GNU Classpath is distributed in the hope that it will be useful, but -WITHOUT ANY WARRANTY; without even the implied warranty of -MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU -General Public License for more details. - -You should have received a copy of the GNU General Public License -along with GNU Classpath; see the file COPYING. If not, write to the -Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA -02110-1301 USA. - -Linking this library statically or dynamically with other modules is -making a combined work based on this library. Thus, the terms and -conditions of the GNU General Public License cover the whole -combination. - -As a special exception, the copyright holders of this library give you -permission to link this library with independent modules to produce an -executable, regardless of the license terms of these independent -modules, and to copy and distribute the resulting executable under -terms of your choice, provided that you also meet, for each linked -independent module, the terms and conditions of the license of that -module. An independent module is a module which is not derived from -or based on this library. If you modify this library, you may extend -this exception to your version of the library, but you are not -obligated to do so. If you do not wish to do so, delete this -exception statement from your version. */ - - -package java.nio; - -import gnu.gcj.RawData; - -abstract class DirectByteBufferImpl extends ByteBuffer -{ - /** - * The owner is used to keep alive the object that actually owns the - * memory. There are three possibilities: - * 1) owner == this: We allocated the memory and we should free it, - * but *only* in finalize (if we've been sliced - * other objects will also have access to the - * memory). - * 2) owner == null: The byte buffer was created thru - * JNI.NewDirectByteBuffer. The JNI code is - * responsible for freeing the memory. - * 3) owner == some other object: The other object allocated the - * memory and should free it. - */ - private final Object owner; - - static final class ReadOnly extends DirectByteBufferImpl - { - ReadOnly(Object owner, RawData address, - int capacity, int limit, - int position) - { - super(owner, address, capacity, limit, position); - } - - public ByteBuffer put(byte value) - { - throw new ReadOnlyBufferException (); - } - - public ByteBuffer put(int index, byte value) - { - throw new ReadOnlyBufferException (); - } - - public boolean isReadOnly() - { - return true; - } - } - - static final class ReadWrite extends DirectByteBufferImpl - { - ReadWrite(int capacity) - { - super(capacity); - } - - ReadWrite(RawData address, int capacity) - { - super(address, capacity); - } - - ReadWrite(Object owner, RawData address, - int capacity, int limit, - int position) - { - super(owner, address, capacity, limit, position); - } - - public boolean isReadOnly() - { - return false; - } - } - - DirectByteBufferImpl(int capacity) - { - super(capacity, capacity, 0, -1, - VMDirectByteBuffer.allocate(capacity), null, 0); - this.owner = this; - } - - DirectByteBufferImpl(RawData address, int capacity) - { - super(capacity, capacity, 0, -1, address, null, 0); - this.owner = null; - } - - DirectByteBufferImpl(Object owner, RawData address, - int capacity, int limit, - int position) - { - super(capacity, limit, position, -1, address, null, 0); - this.owner = owner; - } - - /** - * Allocates a new direct byte buffer. - */ - public static ByteBuffer allocate(int capacity) - { - return new DirectByteBufferImpl.ReadWrite(capacity); - } - - protected void finalize() throws Throwable - { - if (owner == this) - VMDirectByteBuffer.free(address); - } - - public byte get() - { - checkForUnderflow(); - - int pos = position(); - byte result = VMDirectByteBuffer.get(address, pos); - position(pos + 1); - return result; - } - - public byte get(int index) - { - checkIndex(index); - - return VMDirectByteBuffer.get(address, index); - } - - public ByteBuffer get(byte[] dst, int offset, int length) - { - checkArraySize(dst.length, offset, length); - checkForUnderflow(length); - - int index = position(); - VMDirectByteBuffer.get(address, index, dst, offset, length); - position(index+length); - - return this; - } - - public ByteBuffer put(byte value) - { - checkForOverflow(); - - int pos = position(); - VMDirectByteBuffer.put(address, pos, value); - position(pos + 1); - return this; - } - - public ByteBuffer put(int index, byte value) - { - checkIndex(index); - - VMDirectByteBuffer.put(address, index, value); - return this; - } - - void shiftDown(int dst_offset, int src_offset, int count) - { - VMDirectByteBuffer.shiftDown(address, dst_offset, src_offset, count); - } - - public ByteBuffer compact() - { - checkIfReadOnly(); - mark = -1; - int pos = position(); - if (pos > 0) - { - int count = remaining(); - VMDirectByteBuffer.shiftDown(address, 0, pos, count); - position(count); - limit(capacity()); - } - else - { - position(limit()); - limit(capacity()); - } - return this; - } - - public ByteBuffer slice() - { - int rem = remaining(); - if (isReadOnly()) - return new DirectByteBufferImpl.ReadOnly - (owner, VMDirectByteBuffer.adjustAddress(address, position()), - rem, rem, 0); - else - return new DirectByteBufferImpl.ReadWrite - (owner, VMDirectByteBuffer.adjustAddress(address, position()), - rem, rem, 0); - } - - private ByteBuffer duplicate(boolean readOnly) - { - int pos = position(); - reset(); - int mark = position(); - position(pos); - DirectByteBufferImpl result; - if (readOnly) - result = new DirectByteBufferImpl.ReadOnly(owner, address, capacity(), - limit(), pos); - else - result = new DirectByteBufferImpl.ReadWrite(owner, address, capacity(), - limit(), pos); - - if (mark != pos) - { - result.position(mark); - result.mark(); - result.position(pos); - } - return result; - } - - public ByteBuffer duplicate() - { - return duplicate(isReadOnly()); - } - - public ByteBuffer asReadOnlyBuffer() - { - return duplicate(true); - } - - public boolean isDirect() - { - return true; - } - - public CharBuffer asCharBuffer() - { - return new CharViewBufferImpl(this, remaining() >> 1); - } - - public ShortBuffer asShortBuffer() - { - return new ShortViewBufferImpl(this, remaining() >> 1); - } - - public IntBuffer asIntBuffer() - { - return new IntViewBufferImpl(this, remaining() >> 2); - } - - public LongBuffer asLongBuffer() - { - return new LongViewBufferImpl(this, remaining() >> 3); - } - - public FloatBuffer asFloatBuffer() - { - return new FloatViewBufferImpl(this, remaining() >> 2); - } - - public DoubleBuffer asDoubleBuffer() - { - return new DoubleViewBufferImpl(this, remaining() >> 3); - } - - public char getChar() - { - return ByteBufferHelper.getChar(this, order()); - } - - public ByteBuffer putChar(char value) - { - ByteBufferHelper.putChar(this, value, order()); - return this; - } - - public char getChar(int index) - { - return ByteBufferHelper.getChar(this, index, order()); - } - - public ByteBuffer putChar(int index, char value) - { - ByteBufferHelper.putChar(this, index, value, order()); - return this; - } - - public short getShort() - { - return ByteBufferHelper.getShort(this, order()); - } - - public ByteBuffer putShort(short value) - { - ByteBufferHelper.putShort(this, value, order()); - return this; - } - - public short getShort(int index) - { - return ByteBufferHelper.getShort(this, index, order()); - } - - public ByteBuffer putShort(int index, short value) - { - ByteBufferHelper.putShort(this, index, value, order()); - return this; - } - - public int getInt() - { - return ByteBufferHelper.getInt(this, order()); - } - - public ByteBuffer putInt(int value) - { - ByteBufferHelper.putInt(this, value, order()); - return this; - } - - public int getInt(int index) - { - return ByteBufferHelper.getInt(this, index, order()); - } - - public ByteBuffer putInt(int index, int value) - { - ByteBufferHelper.putInt(this, index, value, order()); - return this; - } - - public long getLong() - { - return ByteBufferHelper.getLong(this, order()); - } - - public ByteBuffer putLong(long value) - { - ByteBufferHelper.putLong(this, value, order()); - return this; - } - - public long getLong(int index) - { - return ByteBufferHelper.getLong(this, index, order()); - } - - public ByteBuffer putLong(int index, long value) - { - ByteBufferHelper.putLong(this, index, value, order()); - return this; - } - - public float getFloat() - { - return ByteBufferHelper.getFloat(this, order()); - } - - public ByteBuffer putFloat(float value) - { - ByteBufferHelper.putFloat(this, value, order()); - return this; - } - - public float getFloat(int index) - { - return ByteBufferHelper.getFloat(this, index, order()); - } - - public ByteBuffer putFloat(int index, float value) - { - ByteBufferHelper.putFloat(this, index, value, order()); - return this; - } - - public double getDouble() - { - return ByteBufferHelper.getDouble(this, order()); - } - - public ByteBuffer putDouble(double value) - { - ByteBufferHelper.putDouble(this, value, order()); - return this; - } - - public double getDouble(int index) - { - return ByteBufferHelper.getDouble(this, index, order()); - } - - public ByteBuffer putDouble(int index, double value) - { - ByteBufferHelper.putDouble(this, index, value, order()); - return this; - } -} |