| /* |
| * Copyright (c) 2000, 2011, 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. |
| */ |
| |
| // -- This file was mechanically generated: Do not edit! -- // |
| |
| package java.nio; |
| |
| import java.io.FileDescriptor; |
| import sun.misc.Cleaner; |
| import sun.misc.Unsafe; |
| import sun.misc.VM; |
| import sun.nio.ch.DirectBuffer; |
| |
| |
| class DirectDoubleBufferS |
| |
| extends DoubleBuffer |
| |
| |
| |
| implements DirectBuffer |
| { |
| |
| |
| |
| // Cached unsafe-access object |
| protected static final Unsafe unsafe = Bits.unsafe(); |
| |
| // 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; |
| |
| // An object attached to this buffer. If this buffer is a view of another |
| // buffer then we use this field to keep a reference to that buffer to |
| // ensure that its memory isn't freed before we are done with it. |
| private final Object att; |
| |
| public Object attachment() { |
| return att; |
| } |
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| public Cleaner cleaner() { return null; } |
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| // For duplicates and slices |
| // |
| DirectDoubleBufferS(DirectBuffer db, // package-private |
| int mark, int pos, int lim, int cap, |
| int off) |
| { |
| |
| super(mark, pos, lim, cap); |
| address = db.address() + off; |
| |
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| att = db; |
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| } |
| |
| public DoubleBuffer slice() { |
| int pos = this.position(); |
| int lim = this.limit(); |
| assert (pos <= lim); |
| int rem = (pos <= lim ? lim - pos : 0); |
| int off = (pos << 3); |
| assert (off >= 0); |
| return new DirectDoubleBufferS(this, -1, 0, rem, rem, off); |
| } |
| |
| public DoubleBuffer duplicate() { |
| return new DirectDoubleBufferS(this, |
| this.markValue(), |
| this.position(), |
| this.limit(), |
| this.capacity(), |
| 0); |
| } |
| |
| public DoubleBuffer asReadOnlyBuffer() { |
| |
| return new DirectDoubleBufferRS(this, |
| this.markValue(), |
| this.position(), |
| this.limit(), |
| this.capacity(), |
| 0); |
| |
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| |
| } |
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| public long address() { |
| return address; |
| } |
| |
| private long ix(int i) { |
| return address + (i << 3); |
| } |
| |
| public double get() { |
| return Double.longBitsToDouble(Bits.swap(unsafe.getLong$(ix(nextGetIndex())))); |
| } |
| |
| public double get(int i) { |
| return Double.longBitsToDouble(Bits.swap(unsafe.getLong$(ix(checkIndex(i))))); |
| } |
| |
| public DoubleBuffer get(double[] dst, int offset, int length) { |
| |
| if ((length << 3) > 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 (order() != ByteOrder.nativeOrder()) |
| Bits.copyToLongArray(ix(pos), dst, |
| offset << 3, |
| length << 3); |
| else |
| |
| Bits.copyToArray(ix(pos), dst, 0, |
| offset << 3, |
| length << 3); |
| position(pos + length); |
| } else { |
| super.get(dst, offset, length); |
| } |
| return this; |
| |
| |
| |
| } |
| |
| |
| |
| public DoubleBuffer put(double x) { |
| |
| unsafe.putLong$(ix(nextPutIndex()), Bits.swap(Double.doubleToRawLongBits(x))); |
| return this; |
| |
| |
| |
| } |
| |
| public DoubleBuffer put(int i, double x) { |
| |
| unsafe.putLong$(ix(checkIndex(i)), Bits.swap(Double.doubleToRawLongBits(x))); |
| return this; |
| |
| |
| |
| } |
| |
| public DoubleBuffer put(DoubleBuffer src) { |
| |
| if (src instanceof DirectDoubleBufferS) { |
| if (src == this) |
| throw new IllegalArgumentException(); |
| DirectDoubleBufferS sb = (DirectDoubleBufferS)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 << 3); |
| 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; |
| |
| |
| |
| } |
| |
| public DoubleBuffer put(double[] src, int offset, int length) { |
| |
| if ((length << 3) > 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 (order() != ByteOrder.nativeOrder()) |
| Bits.copyFromLongArray(src, offset << 3, |
| ix(pos), length << 3); |
| else |
| |
| Bits.copyFromArray(src, 0, offset << 3, |
| ix(pos), length << 3); |
| position(pos + length); |
| } else { |
| super.put(src, offset, length); |
| } |
| return this; |
| |
| |
| |
| } |
| |
| public DoubleBuffer compact() { |
| |
| int pos = position(); |
| int lim = limit(); |
| assert (pos <= lim); |
| int rem = (pos <= lim ? lim - pos : 0); |
| |
| unsafe.copyMemory(ix(pos), ix(0), rem << 3); |
| position(rem); |
| limit(capacity()); |
| discardMark(); |
| return this; |
| |
| |
| |
| } |
| |
| public boolean isDirect() { |
| return true; |
| } |
| |
| public boolean isReadOnly() { |
| return false; |
| } |
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| public ByteOrder order() { |
| |
| return ((ByteOrder.nativeOrder() == ByteOrder.BIG_ENDIAN) |
| ? ByteOrder.LITTLE_ENDIAN : ByteOrder.BIG_ENDIAN); |
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| } |
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| } |