| /* |
| * 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. |
| */ |
| |
| // -- This file was mechanically generated: Do not edit! -- // |
| // Android-note: This file is generated by ojluni/src/tools/gensrc_android.sh. |
| |
| package java.nio; |
| |
| import java.util.Objects; |
| |
| import libcore.io.Memory; |
| |
| class ByteBufferAsIntBuffer // package-private |
| extends IntBuffer |
| { |
| |
| |
| |
| protected final ByteBuffer bb; |
| |
| |
| // Android-added: Added offset as address can be zero on Android. |
| /** |
| * The offset from the Bytebuffer at the position 0 (in addition to bb.offset) in the |
| * number of bytes. |
| */ |
| protected final int byteOffset; |
| // Android-added: Merge with little- and big-endian classes. |
| private final ByteOrder order; |
| |
| // Android-changed: Added ByteOrder and removed MemorySegmentProxy to be supported yet. |
| ByteBufferAsIntBuffer(ByteBuffer bb, |
| int mark, int pos, int lim, int cap, |
| int off, ByteOrder order) |
| { |
| |
| // Android-removed: Android duplicates the buffer, and merges with the read-only buffer. |
| // super(mark, pos, lim, cap, segment); |
| // this.bb = bb; |
| // address = addr; |
| // assert address >= bb.address; |
| super(mark, pos, lim, cap); |
| this.bb = bb.duplicate(); |
| this.isReadOnly = bb.isReadOnly; |
| // There are only two possibilities for the type of ByteBuffer "bb", viz, DirectByteBuffer and |
| // HeapByteBuffer. We only have to initialize the field when bb is an instance of |
| // DirectByteBuffer. |
| // The address field is used by NIOAccess#getBasePointer and GetDirectBufferAddress method |
| // in art which return the address of the first usable byte of the underlying memory, i.e, |
| // the position of parent buffer. Therefore, value of "off" will be equal to parent buffer's |
| // position when the method is called from either HeapByteBuffer or DirectByteBuffer. |
| if (bb instanceof DirectByteBuffer) { |
| this.address = bb.address + off; |
| } |
| this.bb.order(order); |
| this.order = order; |
| byteOffset = off; |
| |
| |
| |
| } |
| |
| @Override |
| Object base() { |
| // Android-changed: DirectByteBuffer allocated directly assigns both hb and address field. |
| // return bb.hb; |
| return bb.base(); |
| } |
| |
| @Override |
| public IntBuffer slice() { |
| int pos = this.position(); |
| int lim = this.limit(); |
| int rem = (pos <= lim ? lim - pos : 0); |
| // Android-changed: Added ByteOrder and removed MemorySegmentProxy to be supported yet. |
| // long addr = byteOffset(pos); |
| // return new ByteBufferAsIntBuffer(bb, -1, 0, rem, rem, addr, order); |
| return new ByteBufferAsIntBuffer(bb, -1, 0, rem, rem, ix(pos), order); |
| } |
| |
| @Override |
| public IntBuffer slice(int index, int length) { |
| Objects.checkFromIndexSize(index, length, limit()); |
| return new ByteBufferAsIntBuffer(bb, |
| -1, |
| 0, |
| length, |
| length, |
| // Android-changed: Added ByteOrder and removed MemorySegmentProxy to be supported yet. |
| ix(index), order); |
| } |
| |
| @Override |
| public IntBuffer duplicate() { |
| return new ByteBufferAsIntBuffer(bb, |
| this.markValue(), |
| this.position(), |
| this.limit(), |
| this.capacity(), |
| // Android-changed: Added ByteOrder and removed MemorySegmentProxy to be supported yet. |
| byteOffset, order); |
| } |
| |
| @Override |
| public IntBuffer asReadOnlyBuffer() { |
| |
| return new ByteBufferAsIntBuffer(bb.asReadOnlyBuffer(), |
| this.markValue(), |
| this.position(), |
| this.limit(), |
| this.capacity(), |
| // Android-changed: Added ByteOrder and removed MemorySegmentProxy to be supported yet. |
| byteOffset, order); |
| |
| |
| |
| } |
| |
| |
| |
| private int ix(int i) { |
| // Android-changed: address can be zero on Android. |
| // int off = (int) (address - bb.address); |
| // return (i << 2) + off; |
| return (i << 2) + byteOffset; |
| } |
| |
| // Android-removed: Removed unused byteOffset(long). |
| /* |
| protected long byteOffset(long i) { |
| return (i << 2) + address; |
| } |
| */ |
| |
| @Override |
| public int get() { |
| // Android-changed: Removed MemorySegmentProxy to be supported yet. |
| // int x = SCOPED_MEMORY_ACCESS.getIntUnaligned(scope(), bb.hb, byteOffset(nextGetIndex()), |
| // false); |
| // return (x); |
| return get(nextGetIndex()); |
| } |
| |
| @Override |
| public int get(int i) { |
| // Android-changed: Removed MemorySegmentProxy to be supported yet. |
| // int x = SCOPED_MEMORY_ACCESS.getIntUnaligned(scope(), bb.hb, byteOffset(checkIndex(i)), |
| // false); |
| // return (x); |
| return bb.getIntUnchecked(ix(checkIndex(i))); |
| } |
| |
| // BEGIN Android-added: Improve the efficiency of get(). |
| @Override |
| public IntBuffer get(int[] dst, int off, int length) { |
| Objects.checkFromIndexSize(off, length, dst.length); |
| if (length > remaining()) |
| throw new BufferUnderflowException(); |
| bb.getUnchecked(ix(position), dst, off, length); |
| position += length; |
| return this; |
| } |
| |
| @Override |
| public IntBuffer get(int index, int[] dst, int off, int length) { |
| Objects.checkFromIndexSize(index, length, limit()); |
| Objects.checkFromIndexSize(off, length, dst.length); |
| bb.getUnchecked(ix(index), dst, off, length); |
| return this; |
| } |
| // END Android-added: Improve the efficiency of get(). |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| @Override |
| public IntBuffer put(int x) { |
| |
| // Android-added: Merge the Read-only buffer class with this Read-Write buffer class. |
| throwIfReadOnly(); |
| // Android-changed: Removed MemorySegmentProxy to be supported yet. |
| // int y = (x); |
| // SCOPED_MEMORY_ACCESS.putIntUnaligned(scope(), bb.hb, byteOffset(nextPutIndex()), y, |
| // false); |
| put(nextPutIndex(), x); |
| return this; |
| |
| |
| |
| } |
| |
| @Override |
| public IntBuffer put(int i, int x) { |
| |
| // Android-added: Merge the Read-only buffer class with this Read-Write buffer class. |
| throwIfReadOnly(); |
| // Android-changed: Removed MemorySegmentProxy to be supported yet. |
| // int y = (x); |
| // SCOPED_MEMORY_ACCESS.putIntUnaligned(scope(), bb.hb, byteOffset(checkIndex(i)), y, |
| // false); |
| bb.putIntUnchecked(ix(checkIndex(i)), x); |
| return this; |
| |
| |
| |
| } |
| |
| // BEGIN Android-added: Improve the efficiency of put(type$[]). |
| @Override |
| public IntBuffer put(int[] src, int off, int length) { |
| throwIfReadOnly(); |
| Objects.checkFromIndexSize(off, length, src.length); |
| if (length > remaining()) |
| throw new BufferOverflowException(); |
| bb.putUnchecked(ix(position), src, off, length); |
| position += length; |
| return this; |
| } |
| |
| @Override |
| public IntBuffer put(int index, int[] src, int off, int length) { |
| throwIfReadOnly(); |
| Objects.checkFromIndexSize(index, length, limit()); |
| Objects.checkFromIndexSize(off, length, src.length); |
| putUnchecked(index, src, off, length); |
| return this; |
| } |
| |
| private void putUnchecked(int index, int[] src, int off, int length) { |
| bb.putUnchecked(ix(index), src, off, length); |
| } |
| |
| @Override |
| void putBuffer(int pos, IntBuffer src, int srcPos, int n) { |
| if (src.hb != null) { |
| // this and src don't share the same backed char[]. |
| putUnchecked(pos, src.hb, srcPos + src.offset, n); |
| return; |
| } |
| if (order() == src.order() && |
| src instanceof ByteBufferAsIntBuffer asSrc) { // always true if src.hb == null |
| this.bb.putBuffer(ix(pos), asSrc.bb, asSrc.ix(srcPos), n << 2); |
| return; |
| } |
| |
| // Fallback to the slow path until memmove with bswap is implemented |
| super.putBuffer(pos, src, srcPos, n); |
| } |
| // END Android-added: Improve the efficiency of put(type$[]). |
| |
| @Override |
| public IntBuffer compact() { |
| |
| // Android-added: Merge the Read-only buffer class with this Read-Write buffer class. |
| throwIfReadOnly(); |
| int pos = position(); |
| int lim = limit(); |
| int rem = (pos <= lim ? lim - pos : 0); |
| // Android-changed: Improve the efficiency. |
| /* |
| ByteBuffer db = bb.duplicate(); |
| db.limit(ix(lim)); |
| db.position(ix(0)); |
| ByteBuffer sb = db.slice(); |
| sb.position(pos << 2); |
| sb.compact(); |
| */ |
| if (!(bb instanceof DirectByteBuffer)) { |
| System.arraycopy(bb.array(), ix(pos), bb.array(), ix(0), rem << 2); |
| } else { |
| // Use pos << 2 instead of ix(pos) to avoid double counting of the offset |
| // because this.address == bb.address + offset; |
| Memory.memmove(this, 0, this, pos << 2, rem << 2); |
| } |
| position(rem); |
| limit(capacity()); |
| discardMark(); |
| return this; |
| |
| |
| |
| } |
| |
| @Override |
| public boolean isDirect() { |
| return bb.isDirect(); |
| } |
| |
| @Override |
| public boolean isReadOnly() { |
| return isReadOnly; |
| } |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| @Override |
| public ByteOrder order() { |
| return order; |
| } |
| |
| |
| |
| |
| |
| |
| |
| |
| // Android-added: Merge the Read-only buffer class with this Read-Write buffer class. |
| private void throwIfReadOnly() { |
| if (isReadOnly) { |
| throw new ReadOnlyBufferException(); |
| } |
| } |
| } |
