java.nio.ByteBufferAs-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, 2019, 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;
import jdk.internal.misc.Unsafe;
class ByteBufferAs$Type$Buffer$RW$$BO$ // package-private
extends {#if[ro]?ByteBufferAs}$Type$Buffer{#if[ro]?$BO$}
{
#if[rw]
protected final ByteBuffer bb;
#end[rw]
ByteBufferAs$Type$Buffer$RW$$BO$(ByteBuffer bb, MemorySegmentProxy segment) { // package-private
#if[rw]
super(-1, 0,
bb.remaining() >> $LG_BYTES_PER_VALUE$,
bb.remaining() >> $LG_BYTES_PER_VALUE$, segment);
this.bb = bb;
// enforce limit == capacity
int cap = this.capacity();
this.limit(cap);
int pos = this.position();
assert (pos <= cap);
address = bb.address;
#else[rw]
super(bb, segment);
#end[rw]
}
ByteBufferAs$Type$Buffer$RW$$BO$(ByteBuffer bb,
int mark, int pos, int lim, int cap,
long addr, MemorySegmentProxy segment)
{
#if[rw]
super(mark, pos, lim, cap, segment);
this.bb = bb;
address = addr;
assert address >= bb.address;
#else[rw]
super(bb, mark, pos, lim, cap, addr, segment);
#end[rw]
}
@Override
Object base() {
return bb.hb;
}
public $Type$Buffer slice() {
int pos = this.position();
int lim = this.limit();
int rem = (pos <= lim ? lim - pos : 0);
long addr = byteOffset(pos);
return new ByteBufferAs$Type$Buffer$RW$$BO$(bb, -1, 0, rem, rem, addr, segment);
}
@Override
public $Type$Buffer slice(int index, int length) {
Objects.checkFromIndexSize(index, length, limit());
return new ByteBufferAs$Type$Buffer$RW$$BO$(bb,
-1,
0,
length,
length,
byteOffset(index), segment);
}
public $Type$Buffer duplicate() {
return new ByteBufferAs$Type$Buffer$RW$$BO$(bb,
this.markValue(),
this.position(),
this.limit(),
this.capacity(),
address, segment);
}
public $Type$Buffer asReadOnlyBuffer() {
#if[rw]
return new ByteBufferAs$Type$BufferR$BO$(bb,
this.markValue(),
this.position(),
this.limit(),
this.capacity(),
address, segment);
#else[rw]
return duplicate();
#end[rw]
}
#if[rw]
private int ix(int i) {
int off = (int) (address - bb.address);
return (i << $LG_BYTES_PER_VALUE$) + off;
}
protected long byteOffset(long i) {
return (i << $LG_BYTES_PER_VALUE$) + address;
}
public $type$ get() {
$memtype$ x = SCOPED_MEMORY_ACCESS.get$Memtype$Unaligned(scope(), bb.hb, byteOffset(nextGetIndex()),
{#if[boB]?true:false});
return $fromBits$(x);
}
public $type$ get(int i) {
$memtype$ x = SCOPED_MEMORY_ACCESS.get$Memtype$Unaligned(scope(), bb.hb, byteOffset(checkIndex(i)),
{#if[boB]?true:false});
return $fromBits$(x);
}
#if[streamableType]
$type$ getUnchecked(int i) {
$memtype$ x = SCOPED_MEMORY_ACCESS.get$Memtype$Unaligned(null, bb.hb, byteOffset(i),
{#if[boB]?true:false});
return $fromBits$(x);
}
#end[streamableType]
#end[rw]
public $Type$Buffer put($type$ x) {
#if[rw]
$memtype$ y = $toBits$(x);
SCOPED_MEMORY_ACCESS.put$Memtype$Unaligned(scope(), bb.hb, byteOffset(nextPutIndex()), y,
{#if[boB]?true:false});
return this;
#else[rw]
throw new ReadOnlyBufferException();
#end[rw]
}
public $Type$Buffer put(int i, $type$ x) {
#if[rw]
$memtype$ y = $toBits$(x);
SCOPED_MEMORY_ACCESS.put$Memtype$Unaligned(scope(), bb.hb, byteOffset(checkIndex(i)), y,
{#if[boB]?true:false});
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);
ByteBuffer db = bb.duplicate();
db.limit(ix(lim));
db.position(ix(0));
ByteBuffer sb = db.slice();
sb.position(pos << $LG_BYTES_PER_VALUE$);
sb.compact();
position(rem);
limit(capacity());
discardMark();
return this;
#else[rw]
throw new ReadOnlyBufferException();
#end[rw]
}
public boolean isDirect() {
return bb.isDirect();
}
public boolean isReadOnly() {
return {#if[rw]?false:true};
}
#if[char]
public String toString(int start, int end) {
Objects.checkFromToIndex(start, end, limit());
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;
Objects.checkFromToIndex(start, end, len);
return new ByteBufferAsCharBuffer$RW$$BO$(bb,
-1,
pos + start,
pos + end,
capacity(),
address, segment);
}
#end[char]
public ByteOrder order() {
#if[boB]
return ByteOrder.BIG_ENDIAN;
#end[boB]
#if[boL]
return ByteOrder.LITTLE_ENDIAN;
#end[boL]
}
#if[char]
ByteOrder charRegionOrder() {
return order();
}
#end[char]
}
© 2015 - 2024 Weber Informatics LLC | Privacy Policy