java.nio.Heap-X-Buffer.template Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of qbicc-rt-java.base Show documentation
Show all versions of qbicc-rt-java.base Show documentation
The Qbicc builder for the java.base JDK module
/*
* Copyright (c) 2000, 2021, Oracle and/or its affiliates. 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. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
#warn This file is preprocessed before being compiled
package java.nio;
import java.util.Objects;
import jdk.internal.access.foreign.MemorySegmentProxy;
/**
#if[rw]
* A read/write Heap$Type$Buffer.
#else[rw]
* A read-only Heap$Type$Buffer. This class extends the corresponding
* read/write class, overriding the mutation methods to throw a {@link
* ReadOnlyBufferException} and overriding the view-buffer methods to return an
* instance of this class rather than of the superclass.
#end[rw]
*/
class Heap$Type$Buffer$RW$
extends {#if[ro]?Heap}$Type$Buffer
{
// Cached array base offset
private static final long ARRAY_BASE_OFFSET = UNSAFE.arrayBaseOffset($type$[].class);
// Cached array index scale
private static final long ARRAY_INDEX_SCALE = UNSAFE.arrayIndexScale($type$[].class);
// For speed these fields are actually declared in X-Buffer;
// these declarations are here as documentation
/*
#if[rw]
protected final $type$[] hb;
protected final int offset;
#end[rw]
*/
Heap$Type$Buffer$RW$(int cap, int lim, MemorySegmentProxy segment) { // package-private
#if[rw]
super(-1, 0, lim, cap, new $type$[cap], 0, segment);
/*
hb = new $type$[cap];
offset = 0;
*/
this.address = ARRAY_BASE_OFFSET;
#else[rw]
super(cap, lim, segment);
this.isReadOnly = true;
#end[rw]
}
Heap$Type$Buffer$RW$($type$[] buf, int off, int len, MemorySegmentProxy segment) { // package-private
#if[rw]
super(-1, off, off + len, buf.length, buf, 0, segment);
/*
hb = buf;
offset = 0;
*/
this.address = ARRAY_BASE_OFFSET;
#else[rw]
super(buf, off, len, segment);
this.isReadOnly = true;
#end[rw]
}
protected Heap$Type$Buffer$RW$($type$[] buf,
int mark, int pos, int lim, int cap,
int off, MemorySegmentProxy segment)
{
#if[rw]
super(mark, pos, lim, cap, buf, off, segment);
/*
hb = buf;
offset = off;
*/
this.address = ARRAY_BASE_OFFSET + off * ARRAY_INDEX_SCALE;
#else[rw]
super(buf, mark, pos, lim, cap, off, segment);
this.isReadOnly = true;
#end[rw]
}
public $Type$Buffer slice() {
int pos = this.position();
int lim = this.limit();
int rem = (pos <= lim ? lim - pos : 0);
return new Heap$Type$Buffer$RW$(hb,
-1,
0,
rem,
rem,
pos + offset, segment);
}
@Override
public $Type$Buffer slice(int index, int length) {
Objects.checkFromIndexSize(index, length, limit());
return new Heap$Type$Buffer$RW$(hb,
-1,
0,
length,
length,
index + offset, segment);
}
public $Type$Buffer duplicate() {
return new Heap$Type$Buffer$RW$(hb,
this.markValue(),
this.position(),
this.limit(),
this.capacity(),
offset, segment);
}
public $Type$Buffer asReadOnlyBuffer() {
#if[rw]
return new Heap$Type$BufferR(hb,
this.markValue(),
this.position(),
this.limit(),
this.capacity(),
offset, segment);
#else[rw]
return duplicate();
#end[rw]
}
#if[rw]
protected int ix(int i) {
return i + offset;
}
#if[byte]
private long byteOffset(long i) {
return address + i;
}
#end[byte]
public $type$ get() {
return hb[ix(nextGetIndex())];
}
public $type$ get(int i) {
return hb[ix(checkIndex(i))];
}
#if[streamableType]
$type$ getUnchecked(int i) {
return hb[ix(i)];
}
#end[streamableType]
public $Type$Buffer get($type$[] dst, int offset, int length) {
checkScope();
Objects.checkFromIndexSize(offset, length, dst.length);
int pos = position();
if (length > limit() - pos)
throw new BufferUnderflowException();
System.arraycopy(hb, ix(pos), dst, offset, length);
position(pos + length);
return this;
}
public $Type$Buffer get(int index, $type$[] dst, int offset, int length) {
checkScope();
Objects.checkFromIndexSize(index, length, limit());
Objects.checkFromIndexSize(offset, length, dst.length);
System.arraycopy(hb, ix(index), dst, offset, length);
return this;
}
public boolean isDirect() {
return false;
}
#end[rw]
public boolean isReadOnly() {
return {#if[rw]?false:true};
}
public $Type$Buffer put($type$ x) {
#if[rw]
hb[ix(nextPutIndex())] = x;
return this;
#else[rw]
throw new ReadOnlyBufferException();
#end[rw]
}
public $Type$Buffer put(int i, $type$ x) {
#if[rw]
hb[ix(checkIndex(i))] = x;
return this;
#else[rw]
throw new ReadOnlyBufferException();
#end[rw]
}
public $Type$Buffer put($type$[] src, int offset, int length) {
#if[rw]
checkScope();
Objects.checkFromIndexSize(offset, length, src.length);
int pos = position();
if (length > limit() - pos)
throw new BufferOverflowException();
System.arraycopy(src, offset, hb, ix(pos), length);
position(pos + length);
return this;
#else[rw]
throw new ReadOnlyBufferException();
#end[rw]
}
public $Type$Buffer put($Type$Buffer src) {
#if[rw]
checkScope();
super.put(src);
return this;
#else[rw]
throw new ReadOnlyBufferException();
#end[rw]
}
public $Type$Buffer put(int index, $Type$Buffer src, int offset, int length) {
#if[rw]
checkScope();
super.put(index, src, offset, length);
return this;
#else[rw]
throw new ReadOnlyBufferException();
#end[rw]
}
public $Type$Buffer put(int index, $type$[] src, int offset, int length) {
#if[rw]
checkScope();
Objects.checkFromIndexSize(index, length, limit());
Objects.checkFromIndexSize(offset, length, src.length);
System.arraycopy(src, offset, hb, ix(index), length);
return this;
#else[rw]
throw new ReadOnlyBufferException();
#end[rw]
}
#if[char]
public $Type$Buffer put(String src, int start, int end) {
#if[rw]
checkScope();
int length = end - start;
Objects.checkFromIndexSize(start, length, src.length());
int pos = position();
int lim = limit();
int rem = (pos <= lim) ? lim - pos : 0;
if (length > rem)
throw new BufferOverflowException();
src.getChars(start, end, hb, ix(pos));
position(pos + length);
return this;
#else[rw]
throw new ReadOnlyBufferException();
#end[rw]
}
#end[char]
public $Type$Buffer compact() {
#if[rw]
int pos = position();
int lim = limit();
assert (pos <= lim);
int rem = (pos <= lim ? lim - pos : 0);
System.arraycopy(hb, ix(pos), hb, ix(0), rem);
position(rem);
limit(capacity());
discardMark();
return this;
#else[rw]
throw new ReadOnlyBufferException();
#end[rw]
}
#if[byte]
byte _get(int i) { // package-private
return hb[i];
}
void _put(int i, byte b) { // package-private
#if[rw]
hb[i] = b;
#else[rw]
throw new ReadOnlyBufferException();
#end[rw]
}
// char
#if[rw]
public char getChar() {
return SCOPED_MEMORY_ACCESS.getCharUnaligned(scope(), hb, byteOffset(nextGetIndex(2)), bigEndian);
}
public char getChar(int i) {
return SCOPED_MEMORY_ACCESS.getCharUnaligned(scope(), hb, byteOffset(checkIndex(i, 2)), bigEndian);
}
#end[rw]
public $Type$Buffer putChar(char x) {
#if[rw]
SCOPED_MEMORY_ACCESS.putCharUnaligned(scope(), hb, byteOffset(nextPutIndex(2)), x, bigEndian);
return this;
#else[rw]
throw new ReadOnlyBufferException();
#end[rw]
}
public $Type$Buffer putChar(int i, char x) {
#if[rw]
SCOPED_MEMORY_ACCESS.putCharUnaligned(scope(), hb, byteOffset(checkIndex(i, 2)), x, bigEndian);
return this;
#else[rw]
throw new ReadOnlyBufferException();
#end[rw]
}
public CharBuffer asCharBuffer() {
int pos = position();
int size = (limit() - pos) >> 1;
long addr = address + pos;
return (bigEndian
? (CharBuffer)(new ByteBufferAsCharBuffer$RW$B(this,
-1,
0,
size,
size,
addr, segment))
: (CharBuffer)(new ByteBufferAsCharBuffer$RW$L(this,
-1,
0,
size,
size,
addr, segment)));
}
// short
#if[rw]
public short getShort() {
return SCOPED_MEMORY_ACCESS.getShortUnaligned(scope(), hb, byteOffset(nextGetIndex(2)), bigEndian);
}
public short getShort(int i) {
return SCOPED_MEMORY_ACCESS.getShortUnaligned(scope(), hb, byteOffset(checkIndex(i, 2)), bigEndian);
}
#end[rw]
public $Type$Buffer putShort(short x) {
#if[rw]
SCOPED_MEMORY_ACCESS.putShortUnaligned(scope(), hb, byteOffset(nextPutIndex(2)), x, bigEndian);
return this;
#else[rw]
throw new ReadOnlyBufferException();
#end[rw]
}
public $Type$Buffer putShort(int i, short x) {
#if[rw]
SCOPED_MEMORY_ACCESS.putShortUnaligned(scope(), hb, byteOffset(checkIndex(i, 2)), x, bigEndian);
return this;
#else[rw]
throw new ReadOnlyBufferException();
#end[rw]
}
public ShortBuffer asShortBuffer() {
int pos = position();
int size = (limit() - pos) >> 1;
long addr = address + pos;
return (bigEndian
? (ShortBuffer)(new ByteBufferAsShortBuffer$RW$B(this,
-1,
0,
size,
size,
addr, segment))
: (ShortBuffer)(new ByteBufferAsShortBuffer$RW$L(this,
-1,
0,
size,
size,
addr, segment)));
}
// int
#if[rw]
public int getInt() {
return SCOPED_MEMORY_ACCESS.getIntUnaligned(scope(), hb, byteOffset(nextGetIndex(4)), bigEndian);
}
public int getInt(int i) {
return SCOPED_MEMORY_ACCESS.getIntUnaligned(scope(), hb, byteOffset(checkIndex(i, 4)), bigEndian);
}
#end[rw]
public $Type$Buffer putInt(int x) {
#if[rw]
SCOPED_MEMORY_ACCESS.putIntUnaligned(scope(), hb, byteOffset(nextPutIndex(4)), x, bigEndian);
return this;
#else[rw]
throw new ReadOnlyBufferException();
#end[rw]
}
public $Type$Buffer putInt(int i, int x) {
#if[rw]
SCOPED_MEMORY_ACCESS.putIntUnaligned(scope(), hb, byteOffset(checkIndex(i, 4)), x, bigEndian);
return this;
#else[rw]
throw new ReadOnlyBufferException();
#end[rw]
}
public IntBuffer asIntBuffer() {
int pos = position();
int size = (limit() - pos) >> 2;
long addr = address + pos;
return (bigEndian
? (IntBuffer)(new ByteBufferAsIntBuffer$RW$B(this,
-1,
0,
size,
size,
addr, segment))
: (IntBuffer)(new ByteBufferAsIntBuffer$RW$L(this,
-1,
0,
size,
size,
addr, segment)));
}
// long
#if[rw]
public long getLong() {
return SCOPED_MEMORY_ACCESS.getLongUnaligned(scope(), hb, byteOffset(nextGetIndex(8)), bigEndian);
}
public long getLong(int i) {
return SCOPED_MEMORY_ACCESS.getLongUnaligned(scope(), hb, byteOffset(checkIndex(i, 8)), bigEndian);
}
#end[rw]
public $Type$Buffer putLong(long x) {
#if[rw]
SCOPED_MEMORY_ACCESS.putLongUnaligned(scope(), hb, byteOffset(nextPutIndex(8)), x, bigEndian);
return this;
#else[rw]
throw new ReadOnlyBufferException();
#end[rw]
}
public $Type$Buffer putLong(int i, long x) {
#if[rw]
SCOPED_MEMORY_ACCESS.putLongUnaligned(scope(), hb, byteOffset(checkIndex(i, 8)), x, bigEndian);
return this;
#else[rw]
throw new ReadOnlyBufferException();
#end[rw]
}
public LongBuffer asLongBuffer() {
int pos = position();
int size = (limit() - pos) >> 3;
long addr = address + pos;
return (bigEndian
? (LongBuffer)(new ByteBufferAsLongBuffer$RW$B(this,
-1,
0,
size,
size,
addr, segment))
: (LongBuffer)(new ByteBufferAsLongBuffer$RW$L(this,
-1,
0,
size,
size,
addr, segment)));
}
// float
#if[rw]
public float getFloat() {
int x = SCOPED_MEMORY_ACCESS.getIntUnaligned(scope(), hb, byteOffset(nextGetIndex(4)), bigEndian);
return Float.intBitsToFloat(x);
}
public float getFloat(int i) {
int x = SCOPED_MEMORY_ACCESS.getIntUnaligned(scope(), hb, byteOffset(checkIndex(i, 4)), bigEndian);
return Float.intBitsToFloat(x);
}
#end[rw]
public $Type$Buffer putFloat(float x) {
#if[rw]
int y = Float.floatToRawIntBits(x);
SCOPED_MEMORY_ACCESS.putIntUnaligned(scope(), hb, byteOffset(nextPutIndex(4)), y, bigEndian);
return this;
#else[rw]
throw new ReadOnlyBufferException();
#end[rw]
}
public $Type$Buffer putFloat(int i, float x) {
#if[rw]
int y = Float.floatToRawIntBits(x);
SCOPED_MEMORY_ACCESS.putIntUnaligned(scope(), hb, byteOffset(checkIndex(i, 4)), y, bigEndian);
return this;
#else[rw]
throw new ReadOnlyBufferException();
#end[rw]
}
public FloatBuffer asFloatBuffer() {
int pos = position();
int size = (limit() - pos) >> 2;
long addr = address + pos;
return (bigEndian
? (FloatBuffer)(new ByteBufferAsFloatBuffer$RW$B(this,
-1,
0,
size,
size,
addr, segment))
: (FloatBuffer)(new ByteBufferAsFloatBuffer$RW$L(this,
-1,
0,
size,
size,
addr, segment)));
}
// double
#if[rw]
public double getDouble() {
long x = SCOPED_MEMORY_ACCESS.getLongUnaligned(scope(), hb, byteOffset(nextGetIndex(8)), bigEndian);
return Double.longBitsToDouble(x);
}
public double getDouble(int i) {
long x = SCOPED_MEMORY_ACCESS.getLongUnaligned(scope(), hb, byteOffset(checkIndex(i, 8)), bigEndian);
return Double.longBitsToDouble(x);
}
#end[rw]
public $Type$Buffer putDouble(double x) {
#if[rw]
long y = Double.doubleToRawLongBits(x);
SCOPED_MEMORY_ACCESS.putLongUnaligned(scope(), hb, byteOffset(nextPutIndex(8)), y, bigEndian);
return this;
#else[rw]
throw new ReadOnlyBufferException();
#end[rw]
}
public $Type$Buffer putDouble(int i, double x) {
#if[rw]
long y = Double.doubleToRawLongBits(x);
SCOPED_MEMORY_ACCESS.putLongUnaligned(scope(), hb, byteOffset(checkIndex(i, 8)), y, bigEndian);
return this;
#else[rw]
throw new ReadOnlyBufferException();
#end[rw]
}
public DoubleBuffer asDoubleBuffer() {
int pos = position();
int size = (limit() - pos) >> 3;
long addr = address + pos;
return (bigEndian
? (DoubleBuffer)(new ByteBufferAsDoubleBuffer$RW$B(this,
-1,
0,
size,
size,
addr, segment))
: (DoubleBuffer)(new ByteBufferAsDoubleBuffer$RW$L(this,
-1,
0,
size,
size,
addr, segment)));
}
#end[byte]
#if[char]
String toString(int start, int end) { // package-private
try {
return new String(hb, start + offset, end - start);
} catch (StringIndexOutOfBoundsException x) {
throw new IndexOutOfBoundsException();
}
}
// --- Methods to support CharSequence ---
public CharBuffer subSequence(int start, int end) {
int pos = position();
Objects.checkFromToIndex(start, end, limit() - pos);
return new HeapCharBuffer$RW$(hb,
-1,
pos + start,
pos + end,
capacity(),
offset, segment);
}
#end[char]
#if[!byte]
public ByteOrder order() {
return ByteOrder.nativeOrder();
}
#end[!byte]
#if[char]
ByteOrder charRegionOrder() {
return order();
}
#end[char]
}
© 2015 - 2024 Weber Informatics LLC | Privacy Policy