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772 lines
24 KiB
Text
772 lines
24 KiB
Text
/*
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* Copyright (c) 2000, 2024, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation. Oracle designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Oracle in the LICENSE file that accompanied this code.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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#warn This file is preprocessed before being compiled
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package java.nio;
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import java.lang.foreign.MemorySegment;
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import jdk.internal.foreign.AbstractMemorySegmentImpl;
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import jdk.internal.foreign.MemorySessionImpl;
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import jdk.internal.foreign.SegmentFactories;
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import jdk.internal.vm.annotation.ForceInline;
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import java.util.Objects;
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/**
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#if[rw]
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* A read/write Heap$Type$Buffer.
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#else[rw]
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* A read-only Heap$Type$Buffer. This class extends the corresponding
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* read/write class, overriding the mutation methods to throw a {@link
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* ReadOnlyBufferException} and overriding the view-buffer methods to return an
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* instance of this class rather than of the superclass.
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#end[rw]
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*/
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#if[rw]
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sealed
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#else[rw]
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final
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#end[rw]
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class Heap$Type$Buffer$RW$
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extends {#if[ro]?Heap}$Type$Buffer
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#if[rw]
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permits Heap$Type$BufferR
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#end[rw]
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{
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#if[rw]
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// Cached array base offset
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private static final long ARRAY_BASE_OFFSET = UNSAFE.arrayBaseOffset($type$[].class);
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// Cached array index scale
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private static final long ARRAY_INDEX_SCALE = UNSAFE.arrayIndexScale($type$[].class);
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// For speed these fields are actually declared in X-Buffer;
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// these declarations are here as documentation
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/*
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protected final $type$[] hb;
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protected final int offset;
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*/
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#end[rw]
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Heap$Type$Buffer$RW$(int cap, int lim, MemorySegment segment) { // package-private
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#if[rw]
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super(-1, 0, lim, cap, new $type$[cap], 0, segment);
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/*
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hb = new $type$[cap];
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offset = 0;
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*/
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this.address = ARRAY_BASE_OFFSET;
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#else[rw]
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super(cap, lim, segment);
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this.isReadOnly = true;
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#end[rw]
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}
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Heap$Type$Buffer$RW$($type$[] buf, int off, int len, MemorySegment segment) { // package-private
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#if[rw]
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super(-1, off, off + len, buf.length, buf, 0, segment);
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/*
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hb = buf;
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offset = 0;
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*/
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this.address = ARRAY_BASE_OFFSET;
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#else[rw]
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super(buf, off, len, segment);
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this.isReadOnly = true;
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#end[rw]
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}
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protected Heap$Type$Buffer$RW$($type$[] buf,
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int mark, int pos, int lim, int cap,
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int off, MemorySegment segment)
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{
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#if[rw]
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super(mark, pos, lim, cap, buf, off, segment);
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/*
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hb = buf;
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offset = off;
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*/
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this.address = ARRAY_BASE_OFFSET + off * ARRAY_INDEX_SCALE;
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#else[rw]
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super(buf, mark, pos, lim, cap, off, segment);
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this.isReadOnly = true;
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#end[rw]
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}
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public $Type$Buffer slice() {
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int pos = this.position();
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int lim = this.limit();
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int rem = (pos <= lim ? lim - pos : 0);
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return new Heap$Type$Buffer$RW$(hb,
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-1,
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0,
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rem,
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rem,
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pos + offset, segment);
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}
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@Override
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public $Type$Buffer slice(int index, int length) {
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Objects.checkFromIndexSize(index, length, limit());
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return new Heap$Type$Buffer$RW$(hb,
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-1,
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0,
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length,
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length,
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index + offset, segment);
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}
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public $Type$Buffer duplicate() {
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return new Heap$Type$Buffer$RW$(hb,
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this.markValue(),
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this.position(),
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this.limit(),
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this.capacity(),
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offset, segment);
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}
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public $Type$Buffer asReadOnlyBuffer() {
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#if[rw]
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return new Heap$Type$BufferR(hb,
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this.markValue(),
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this.position(),
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this.limit(),
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this.capacity(),
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offset, segment);
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#else[rw]
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return duplicate();
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#end[rw]
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}
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#if[rw]
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protected int ix(int i) {
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return i + offset;
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}
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#if[byte]
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private long byteOffset(long i) {
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return address + i;
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}
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#end[byte]
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public $type$ get() {
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return hb[ix(nextGetIndex())];
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}
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public $type$ get(int i) {
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return hb[ix(checkIndex(i))];
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}
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#if[streamableType]
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$type$ getUnchecked(int i) {
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return hb[ix(i)];
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}
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#end[streamableType]
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public $Type$Buffer get($type$[] dst, int offset, int length) {
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checkSession();
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Objects.checkFromIndexSize(offset, length, dst.length);
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int pos = position();
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if (length > limit() - pos)
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throw new BufferUnderflowException();
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System.arraycopy(hb, ix(pos), dst, offset, length);
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position(pos + length);
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return this;
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}
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public $Type$Buffer get(int index, $type$[] dst, int offset, int length) {
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checkSession();
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Objects.checkFromIndexSize(index, length, limit());
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Objects.checkFromIndexSize(offset, length, dst.length);
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System.arraycopy(hb, ix(index), dst, offset, length);
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return this;
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}
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public boolean isDirect() {
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return false;
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}
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#end[rw]
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public boolean isReadOnly() {
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return {#if[rw]?false:true};
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}
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public $Type$Buffer put($type$ x) {
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#if[rw]
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hb[ix(nextPutIndex())] = x;
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return this;
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#else[rw]
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throw new ReadOnlyBufferException();
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#end[rw]
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}
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public $Type$Buffer put(int i, $type$ x) {
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#if[rw]
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hb[ix(checkIndex(i))] = x;
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return this;
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#else[rw]
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throw new ReadOnlyBufferException();
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#end[rw]
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}
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public $Type$Buffer put($type$[] src, int offset, int length) {
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#if[rw]
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checkSession();
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Objects.checkFromIndexSize(offset, length, src.length);
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int pos = position();
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if (length > limit() - pos)
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throw new BufferOverflowException();
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System.arraycopy(src, offset, hb, ix(pos), length);
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position(pos + length);
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return this;
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#else[rw]
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throw new ReadOnlyBufferException();
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#end[rw]
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}
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public $Type$Buffer put($Type$Buffer src) {
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#if[rw]
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checkSession();
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super.put(src);
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return this;
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#else[rw]
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throw new ReadOnlyBufferException();
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#end[rw]
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}
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public $Type$Buffer put(int index, $Type$Buffer src, int offset, int length) {
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#if[rw]
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checkSession();
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super.put(index, src, offset, length);
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return this;
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#else[rw]
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throw new ReadOnlyBufferException();
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#end[rw]
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}
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public $Type$Buffer put(int index, $type$[] src, int offset, int length) {
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#if[rw]
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checkSession();
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Objects.checkFromIndexSize(index, length, limit());
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Objects.checkFromIndexSize(offset, length, src.length);
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System.arraycopy(src, offset, hb, ix(index), length);
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return this;
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#else[rw]
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throw new ReadOnlyBufferException();
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#end[rw]
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}
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#if[char]
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//
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// Use getChars() to load chars directly into the heap buffer array.
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// For a String or StringBuffer source this improves performance if
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// a proper subsequence is being appended as copying to a new intermediate
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// String object is avoided. For a StringBuilder where either a subsequence
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// or the full sequence of chars is being appended, copying the chars to
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// an intermedite String in StringBuilder::toString is avoided.
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//
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private $Type$Buffer appendChars(CharSequence csq, int start, int end) {
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checkSession();
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Objects.checkFromToIndex(start, end, csq.length());
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int length = end - start;
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int pos = position();
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int lim = limit();
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int rem = (pos <= lim) ? lim - pos : 0;
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if (length > rem)
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throw new BufferOverflowException();
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if (csq instanceof String str) {
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str.getChars(start, end, hb, ix(pos));
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} else if (csq instanceof StringBuilder sb) {
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sb.getChars(start, end, hb, ix(pos));
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} else if (csq instanceof StringBuffer sb) {
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sb.getChars(start, end, hb, ix(pos));
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}
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position(pos + length);
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return this;
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}
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public $Type$Buffer append(CharSequence csq) {
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#if[rw]
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if (csq instanceof StringBuilder)
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return appendChars(csq, 0, csq.length());
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return super.append(csq);
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#else[rw]
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throw new ReadOnlyBufferException();
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#end[rw]
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}
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public $Type$Buffer append(CharSequence csq, int start, int end) {
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#if[rw]
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if (csq instanceof String || csq instanceof StringBuffer ||
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csq instanceof StringBuilder)
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return appendChars(csq, start, end);
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return super.append(csq, start, end);
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#else[rw]
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throw new ReadOnlyBufferException();
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#end[rw]
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}
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public $Type$Buffer put(String src, int start, int end) {
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#if[rw]
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checkSession();
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int length = end - start;
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Objects.checkFromIndexSize(start, length, src.length());
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int pos = position();
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int lim = limit();
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int rem = (pos <= lim) ? lim - pos : 0;
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if (length > rem)
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throw new BufferOverflowException();
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src.getChars(start, end, hb, ix(pos));
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position(pos + length);
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return this;
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#else[rw]
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throw new ReadOnlyBufferException();
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#end[rw]
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}
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#end[char]
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public $Type$Buffer compact() {
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#if[rw]
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int pos = position();
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int lim = limit();
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assert (pos <= lim);
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int rem = (pos <= lim ? lim - pos : 0);
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System.arraycopy(hb, ix(pos), hb, ix(0), rem);
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position(rem);
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limit(capacity());
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discardMark();
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return this;
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#else[rw]
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throw new ReadOnlyBufferException();
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#end[rw]
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}
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#if[byte]
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byte _get(int i) { // package-private
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return hb[i];
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}
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void _put(int i, byte b) { // package-private
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#if[rw]
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hb[i] = b;
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#else[rw]
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throw new ReadOnlyBufferException();
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#end[rw]
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}
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// char
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#if[rw]
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public char getChar() {
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return SCOPED_MEMORY_ACCESS.getCharUnaligned(session(), hb, byteOffset(nextGetIndex(2)), bigEndian);
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}
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public char getChar(int i) {
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return SCOPED_MEMORY_ACCESS.getCharUnaligned(session(), hb, byteOffset(checkIndex(i, 2)), bigEndian);
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}
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#end[rw]
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public $Type$Buffer putChar(char x) {
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#if[rw]
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SCOPED_MEMORY_ACCESS.putCharUnaligned(session(), hb, byteOffset(nextPutIndex(2)), x, bigEndian);
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return this;
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#else[rw]
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throw new ReadOnlyBufferException();
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#end[rw]
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}
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public $Type$Buffer putChar(int i, char x) {
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#if[rw]
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SCOPED_MEMORY_ACCESS.putCharUnaligned(session(), hb, byteOffset(checkIndex(i, 2)), x, bigEndian);
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return this;
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#else[rw]
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throw new ReadOnlyBufferException();
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#end[rw]
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}
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public CharBuffer asCharBuffer() {
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int pos = position();
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int size = (limit() - pos) >> 1;
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long addr = address + pos;
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return (bigEndian
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? (CharBuffer)(new ByteBufferAsCharBuffer$RW$B(this,
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-1,
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0,
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size,
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size,
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addr, segment))
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: (CharBuffer)(new ByteBufferAsCharBuffer$RW$L(this,
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-1,
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0,
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size,
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size,
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addr, segment)));
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}
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// short
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#if[rw]
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public short getShort() {
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return SCOPED_MEMORY_ACCESS.getShortUnaligned(session(), hb, byteOffset(nextGetIndex(2)), bigEndian);
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}
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public short getShort(int i) {
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return SCOPED_MEMORY_ACCESS.getShortUnaligned(session(), hb, byteOffset(checkIndex(i, 2)), bigEndian);
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}
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#end[rw]
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public $Type$Buffer putShort(short x) {
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#if[rw]
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SCOPED_MEMORY_ACCESS.putShortUnaligned(session(), hb, byteOffset(nextPutIndex(2)), x, bigEndian);
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return this;
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#else[rw]
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throw new ReadOnlyBufferException();
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#end[rw]
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}
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public $Type$Buffer putShort(int i, short x) {
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#if[rw]
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SCOPED_MEMORY_ACCESS.putShortUnaligned(session(), hb, byteOffset(checkIndex(i, 2)), x, bigEndian);
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return this;
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#else[rw]
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throw new ReadOnlyBufferException();
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#end[rw]
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}
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public ShortBuffer asShortBuffer() {
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int pos = position();
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int size = (limit() - pos) >> 1;
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long addr = address + pos;
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return (bigEndian
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? (ShortBuffer)(new ByteBufferAsShortBuffer$RW$B(this,
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-1,
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0,
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size,
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size,
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addr, segment))
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: (ShortBuffer)(new ByteBufferAsShortBuffer$RW$L(this,
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-1,
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0,
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size,
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size,
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addr, segment)));
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}
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// int
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#if[rw]
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public int getInt() {
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return SCOPED_MEMORY_ACCESS.getIntUnaligned(session(), hb, byteOffset(nextGetIndex(4)), bigEndian);
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}
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public int getInt(int i) {
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return SCOPED_MEMORY_ACCESS.getIntUnaligned(session(), hb, byteOffset(checkIndex(i, 4)), bigEndian);
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}
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#end[rw]
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public $Type$Buffer putInt(int x) {
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#if[rw]
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SCOPED_MEMORY_ACCESS.putIntUnaligned(session(), hb, byteOffset(nextPutIndex(4)), x, bigEndian);
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return this;
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#else[rw]
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throw new ReadOnlyBufferException();
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#end[rw]
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}
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public $Type$Buffer putInt(int i, int x) {
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#if[rw]
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SCOPED_MEMORY_ACCESS.putIntUnaligned(session(), hb, byteOffset(checkIndex(i, 4)), x, bigEndian);
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return this;
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#else[rw]
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throw new ReadOnlyBufferException();
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#end[rw]
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}
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public IntBuffer asIntBuffer() {
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int pos = position();
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int size = (limit() - pos) >> 2;
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long addr = address + pos;
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return (bigEndian
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? (IntBuffer)(new ByteBufferAsIntBuffer$RW$B(this,
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-1,
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0,
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size,
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size,
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addr, segment))
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: (IntBuffer)(new ByteBufferAsIntBuffer$RW$L(this,
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-1,
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0,
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size,
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size,
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addr, segment)));
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}
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// long
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#if[rw]
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public long getLong() {
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return SCOPED_MEMORY_ACCESS.getLongUnaligned(session(), hb, byteOffset(nextGetIndex(8)), bigEndian);
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}
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public long getLong(int i) {
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return SCOPED_MEMORY_ACCESS.getLongUnaligned(session(), hb, byteOffset(checkIndex(i, 8)), bigEndian);
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}
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#end[rw]
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public $Type$Buffer putLong(long x) {
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#if[rw]
|
|
SCOPED_MEMORY_ACCESS.putLongUnaligned(session(), 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(session(), 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(session(), hb, byteOffset(nextGetIndex(4)), bigEndian);
|
|
return Float.intBitsToFloat(x);
|
|
}
|
|
|
|
public float getFloat(int i) {
|
|
int x = SCOPED_MEMORY_ACCESS.getIntUnaligned(session(), 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(session(), 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(session(), 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(session(), hb, byteOffset(nextGetIndex(8)), bigEndian);
|
|
return Double.longBitsToDouble(x);
|
|
}
|
|
|
|
public double getDouble(int i) {
|
|
long x = SCOPED_MEMORY_ACCESS.getLongUnaligned(session(), 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(session(), 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(session(), 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]
|
|
@ForceInline
|
|
@Override
|
|
int scaleShifts() {
|
|
return 0;
|
|
}
|
|
|
|
@ForceInline
|
|
@Override
|
|
AbstractMemorySegmentImpl heapSegment(Object base,
|
|
long offset,
|
|
long length,
|
|
boolean readOnly,
|
|
MemorySessionImpl bufferScope) {
|
|
return SegmentFactories.arrayOf$Type$Segment(base, offset, length, readOnly, bufferScope);
|
|
}
|
|
#end[byte]
|
|
|
|
#if[!byte]
|
|
|
|
public ByteOrder order() {
|
|
return ByteOrder.nativeOrder();
|
|
}
|
|
#end[!byte]
|
|
#if[char]
|
|
|
|
ByteOrder charRegionOrder() {
|
|
return order();
|
|
}
|
|
#end[char]
|
|
}
|