jdk/src/java.base/share/classes/java/nio/Direct-X-Buffer-bin.java.template
author psandoz
Fri, 29 Jul 2016 10:18:47 +0200
changeset 40195 a13e4945de1d
parent 40180 e53a90882a23
permissions -rw-r--r--
8162458: Buffer view implementations use incorrect offset for Unsafe access Reviewed-by: alanb
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/*
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 * Copyright (c) 2000, 2016, 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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class XXX {
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#begin
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#if[rw]
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    private $type$ get$Type$(long a) {
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        $memtype$ x = unsafe.get$Memtype$Unaligned(null, a, bigEndian);
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        return $fromBits$(x);
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    }
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    public $type$ get$Type$() {
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        return get$Type$(ix(nextGetIndex($BYTES_PER_VALUE$)));
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    }
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    public $type$ get$Type$(int i) {
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        return get$Type$(ix(checkIndex(i, $BYTES_PER_VALUE$)));
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    }
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#end[rw]
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    private ByteBuffer put$Type$(long a, $type$ x) {
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#if[rw]
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        $memtype$ y = $toBits$(x);
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        unsafe.put$Memtype$Unaligned(null, a, y, 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 ByteBuffer put$Type$($type$ x) {
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#if[rw]
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        put$Type$(ix(nextPutIndex($BYTES_PER_VALUE$)), 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 ByteBuffer put$Type$(int i, $type$ x) {
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#if[rw]
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        put$Type$(ix(checkIndex(i, $BYTES_PER_VALUE$)), 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 as$Type$Buffer() {
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        int off = this.position();
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        int lim = this.limit();
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        assert (off <= lim);
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        int rem = (off <= lim ? lim - off : 0);
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        int size = rem >> $LG_BYTES_PER_VALUE$;
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        if (!unaligned && ((address + off) % $BYTES_PER_VALUE$ != 0)) {
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            return (bigEndian
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                    ? ($Type$Buffer)(new ByteBufferAs$Type$Buffer$RW$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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                                                                       address + off))
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                    : ($Type$Buffer)(new ByteBufferAs$Type$Buffer$RW$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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                                                                       address + off)));
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        } else {
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            return (nativeByteOrder
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                    ? ($Type$Buffer)(new Direct$Type$Buffer$RW$U(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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                                                                 off))
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                    : ($Type$Buffer)(new Direct$Type$Buffer$RW$S(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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                                                                 off)));
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        }
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    }
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#end
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}