--- a/jdk/src/share/classes/java/nio/Direct-X-Buffer.java Fri Nov 06 17:26:01 2009 -0800
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,464 +0,0 @@
-/*
- * Copyright 2000-2008 Sun Microsystems, Inc. All Rights Reserved.
- * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
- *
- * This code is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License version 2 only, as
- * published by the Free Software Foundation. Sun designates this
- * particular file as subject to the "Classpath" exception as provided
- * by Sun in the LICENSE file that accompanied this code.
- *
- * This code 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
- * version 2 for more details (a copy is included in the LICENSE file that
- * accompanied this code).
- *
- * You should have received a copy of the GNU General Public License version
- * 2 along with this work; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
- *
- * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
- * CA 95054 USA or visit www.sun.com if you need additional information or
- * have any questions.
- */
-
-#warn This file is preprocessed before being compiled
-
-package java.nio;
-
-import sun.misc.Cleaner;
-import sun.misc.Unsafe;
-import sun.nio.ch.DirectBuffer;
-
-
-class Direct$Type$Buffer$RW$$BO$
-#if[rw]
- extends {#if[byte]?Mapped$Type$Buffer:$Type$Buffer}
-#else[rw]
- extends Direct$Type$Buffer$BO$
-#end[rw]
- implements DirectBuffer
-{
-
-#if[rw]
-
- // Cached unsafe-access object
- protected static final Unsafe unsafe = Bits.unsafe();
-
- // Cached array base offset
- private static final long arrayBaseOffset = (long)unsafe.arrayBaseOffset($type$[].class);
-
- // Cached unaligned-access capability
- protected static final boolean unaligned = Bits.unaligned();
-
- // Base address, used in all indexing calculations
- // NOTE: moved up to Buffer.java for speed in JNI GetDirectBufferAddress
- // protected long address;
-
- // If this buffer is a view of another buffer then we keep a reference to
- // that buffer so that its memory isn't freed before we're done with it
- protected Object viewedBuffer = null;
-
- public Object viewedBuffer() {
- return viewedBuffer;
- }
-
-#if[byte]
-
- private static class Deallocator
- implements Runnable
- {
-
- private static Unsafe unsafe = Unsafe.getUnsafe();
-
- private long address;
- private long size;
- private int capacity;
-
- private Deallocator(long address, long size, int capacity) {
- assert (address != 0);
- this.address = address;
- this.size = size;
- this.capacity = capacity;
- }
-
- public void run() {
- if (address == 0) {
- // Paranoia
- return;
- }
- unsafe.freeMemory(address);
- address = 0;
- Bits.unreserveMemory(size, capacity);
- }
-
- }
-
- private final Cleaner cleaner;
-
- public Cleaner cleaner() { return cleaner; }
-
-#else[byte]
-
- public Cleaner cleaner() { return null; }
-
-#end[byte]
-
-#end[rw]
-
-#if[byte]
-
- // Primary constructor
- //
- Direct$Type$Buffer$RW$(int cap) { // package-private
-#if[rw]
- super(-1, 0, cap, cap, false);
- int ps = Bits.pageSize();
- int size = cap + ps;
- Bits.reserveMemory(size, cap);
-
- long base = 0;
- try {
- base = unsafe.allocateMemory(size);
- } catch (OutOfMemoryError x) {
- Bits.unreserveMemory(size, cap);
- throw x;
- }
- unsafe.setMemory(base, size, (byte) 0);
- if (base % ps != 0) {
- // Round up to page boundary
- address = base + ps - (base & (ps - 1));
- } else {
- address = base;
- }
- cleaner = Cleaner.create(this, new Deallocator(base, size, cap));
-#else[rw]
- super(cap);
-#end[rw]
- }
-
-#if[rw]
-
- // Invoked only by JNI: NewDirectByteBuffer(void*, long)
- //
- private Direct$Type$Buffer(long addr, int cap) {
- super(-1, 0, cap, cap, false);
- address = addr;
- cleaner = null;
- }
-
-#end[rw]
-
- // For memory-mapped buffers -- invoked by FileChannelImpl via reflection
- //
- protected Direct$Type$Buffer$RW$(int cap, long addr, Runnable unmapper) {
-#if[rw]
- super(-1, 0, cap, cap, true);
- address = addr;
- viewedBuffer = null;
- cleaner = Cleaner.create(this, unmapper);
-#else[rw]
- super(cap, addr, unmapper);
-#end[rw]
- }
-
-#end[byte]
-
- // For duplicates and slices
- //
- Direct$Type$Buffer$RW$$BO$(DirectBuffer db, // package-private
- int mark, int pos, int lim, int cap,
- int off)
- {
-#if[rw]
- super(mark, pos, lim, cap);
- address = db.address() + off;
- viewedBuffer = db;
-#if[byte]
- cleaner = null;
-#end[byte]
-#else[rw]
- super(db, mark, pos, lim, cap, off);
-#end[rw]
- }
-
- public $Type$Buffer slice() {
- int pos = this.position();
- int lim = this.limit();
- assert (pos <= lim);
- int rem = (pos <= lim ? lim - pos : 0);
- int off = (pos << $LG_BYTES_PER_VALUE$);
- assert (off >= 0);
- return new Direct$Type$Buffer$RW$$BO$(this, -1, 0, rem, rem, off);
- }
-
- public $Type$Buffer duplicate() {
- return new Direct$Type$Buffer$RW$$BO$(this,
- this.markValue(),
- this.position(),
- this.limit(),
- this.capacity(),
- 0);
- }
-
- public $Type$Buffer asReadOnlyBuffer() {
-#if[rw]
- return new Direct$Type$BufferR$BO$(this,
- this.markValue(),
- this.position(),
- this.limit(),
- this.capacity(),
- 0);
-#else[rw]
- return duplicate();
-#end[rw]
- }
-
-#if[rw]
-
- public long address() {
- return address;
- }
-
- private long ix(int i) {
- return address + (i << $LG_BYTES_PER_VALUE$);
- }
-
- public $type$ get() {
- return $fromBits$($swap$(unsafe.get$Swaptype$(ix(nextGetIndex()))));
- }
-
- public $type$ get(int i) {
- return $fromBits$($swap$(unsafe.get$Swaptype$(ix(checkIndex(i)))));
- }
-
- public $Type$Buffer get($type$[] dst, int offset, int length) {
-#if[rw]
- if ((length << $LG_BYTES_PER_VALUE$) > Bits.JNI_COPY_TO_ARRAY_THRESHOLD) {
- checkBounds(offset, length, dst.length);
- int pos = position();
- int lim = limit();
- assert (pos <= lim);
- int rem = (pos <= lim ? lim - pos : 0);
- if (length > rem)
- throw new BufferUnderflowException();
-
-#if[!byte]
- if (order() != ByteOrder.nativeOrder())
- Bits.copyTo$Memtype$Array(ix(pos), dst,
- offset << $LG_BYTES_PER_VALUE$,
- length << $LG_BYTES_PER_VALUE$);
- else
-#end[!byte]
- Bits.copyToArray(ix(pos), dst, arrayBaseOffset,
- offset << $LG_BYTES_PER_VALUE$,
- length << $LG_BYTES_PER_VALUE$);
- position(pos + length);
- } else {
- super.get(dst, offset, length);
- }
- return this;
-#else[rw]
- throw new ReadOnlyBufferException();
-#end[rw]
- }
-
-#end[rw]
-
- public $Type$Buffer put($type$ x) {
-#if[rw]
- unsafe.put$Swaptype$(ix(nextPutIndex()), $swap$($toBits$(x)));
- return this;
-#else[rw]
- throw new ReadOnlyBufferException();
-#end[rw]
- }
-
- public $Type$Buffer put(int i, $type$ x) {
-#if[rw]
- unsafe.put$Swaptype$(ix(checkIndex(i)), $swap$($toBits$(x)));
- return this;
-#else[rw]
- throw new ReadOnlyBufferException();
-#end[rw]
- }
-
- public $Type$Buffer put($Type$Buffer src) {
-#if[rw]
- if (src instanceof Direct$Type$Buffer$BO$) {
- if (src == this)
- throw new IllegalArgumentException();
- Direct$Type$Buffer$RW$$BO$ sb = (Direct$Type$Buffer$RW$$BO$)src;
-
- int spos = sb.position();
- int slim = sb.limit();
- assert (spos <= slim);
- int srem = (spos <= slim ? slim - spos : 0);
-
- int pos = position();
- int lim = limit();
- assert (pos <= lim);
- int rem = (pos <= lim ? lim - pos : 0);
-
- if (srem > rem)
- throw new BufferOverflowException();
- unsafe.copyMemory(sb.ix(spos), ix(pos), srem << $LG_BYTES_PER_VALUE$);
- sb.position(spos + srem);
- position(pos + srem);
- } else if (src.hb != null) {
-
- int spos = src.position();
- int slim = src.limit();
- assert (spos <= slim);
- int srem = (spos <= slim ? slim - spos : 0);
-
- put(src.hb, src.offset + spos, srem);
- src.position(spos + srem);
-
- } else {
- super.put(src);
- }
- return this;
-#else[rw]
- throw new ReadOnlyBufferException();
-#end[rw]
- }
-
- public $Type$Buffer put($type$[] src, int offset, int length) {
-#if[rw]
- if ((length << $LG_BYTES_PER_VALUE$) > Bits.JNI_COPY_FROM_ARRAY_THRESHOLD) {
- checkBounds(offset, length, src.length);
- int pos = position();
- int lim = limit();
- assert (pos <= lim);
- int rem = (pos <= lim ? lim - pos : 0);
- if (length > rem)
- throw new BufferOverflowException();
-
-#if[!byte]
- if (order() != ByteOrder.nativeOrder())
- Bits.copyFrom$Memtype$Array(src, offset << $LG_BYTES_PER_VALUE$,
- ix(pos), length << $LG_BYTES_PER_VALUE$);
- else
-#end[!byte]
- Bits.copyFromArray(src, arrayBaseOffset, offset << $LG_BYTES_PER_VALUE$,
- ix(pos), length << $LG_BYTES_PER_VALUE$);
- position(pos + length);
- } else {
- super.put(src, offset, length);
- }
- return this;
-#else[rw]
- throw new ReadOnlyBufferException();
-#end[rw]
- }
-
- public $Type$Buffer compact() {
-#if[rw]
- int pos = position();
- int lim = limit();
- assert (pos <= lim);
- int rem = (pos <= lim ? lim - pos : 0);
-
- unsafe.copyMemory(ix(pos), ix(0), rem << $LG_BYTES_PER_VALUE$);
- position(rem);
- limit(capacity());
- discardMark();
- return this;
-#else[rw]
- throw new ReadOnlyBufferException();
-#end[rw]
- }
-
- public boolean isDirect() {
- return true;
- }
-
- public boolean isReadOnly() {
- return {#if[rw]?false:true};
- }
-
-
-#if[char]
-
- public String toString(int start, int end) {
- if ((end > limit()) || (start > end))
- throw new IndexOutOfBoundsException();
- try {
- int len = end - start;
- char[] ca = new char[len];
- CharBuffer cb = CharBuffer.wrap(ca);
- CharBuffer db = this.duplicate();
- db.position(start);
- db.limit(end);
- cb.put(db);
- return new String(ca);
- } catch (StringIndexOutOfBoundsException x) {
- throw new IndexOutOfBoundsException();
- }
- }
-
-
- // --- Methods to support CharSequence ---
-
- public CharBuffer subSequence(int start, int end) {
- int pos = position();
- int lim = limit();
- assert (pos <= lim);
- pos = (pos <= lim ? pos : lim);
- int len = lim - pos;
-
- if ((start < 0) || (end > len) || (start > end))
- throw new IndexOutOfBoundsException();
- return new DirectCharBuffer$RW$$BO$(this,
- -1,
- pos + start,
- pos + end,
- capacity(),
- offset);
- }
-
-#end[char]
-
-
-
-#if[!byte]
-
- public ByteOrder order() {
-#if[boS]
- return ((ByteOrder.nativeOrder() == ByteOrder.BIG_ENDIAN)
- ? ByteOrder.LITTLE_ENDIAN : ByteOrder.BIG_ENDIAN);
-#end[boS]
-#if[boU]
- return ((ByteOrder.nativeOrder() != ByteOrder.BIG_ENDIAN)
- ? ByteOrder.LITTLE_ENDIAN : ByteOrder.BIG_ENDIAN);
-#end[boU]
- }
-
-#end[!byte]
-
-
-
-#if[byte]
-
- byte _get(int i) { // package-private
- return unsafe.getByte(address + i);
- }
-
- void _put(int i, byte b) { // package-private
-#if[rw]
- unsafe.putByte(address + i, b);
-#else[rw]
- throw new ReadOnlyBufferException();
-#end[rw]
- }
-
- // #BIN
- //
- // Binary-data access methods for short, char, int, long, float,
- // and double will be inserted here
-
-#end[byte]
-
-}