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

/*
 * Copyright (c) 2000, 2016, 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

class XXX {

#begin

#if[rw]

    private $type$ get$Type$(long a) {
        $memtype$ x = unsafe.get$Memtype$Unaligned(null, a, bigEndian);
        return $fromBits$(x);
    }

    public $type$ get$Type$() {
        return get$Type$(ix(nextGetIndex($BYTES_PER_VALUE$)));
    }

    public $type$ get$Type$(int i) {
        return get$Type$(ix(checkIndex(i, $BYTES_PER_VALUE$)));
    }

#end[rw]

    private ByteBuffer put$Type$(long a, $type$ x) {
#if[rw]
        $memtype$ y = $toBits$(x);
        unsafe.put$Memtype$Unaligned(null, a, y, bigEndian);
        return this;
#else[rw]
        throw new ReadOnlyBufferException();
#end[rw]
    }

    public ByteBuffer put$Type$($type$ x) {
#if[rw]
        put$Type$(ix(nextPutIndex($BYTES_PER_VALUE$)), x);
        return this;
#else[rw]
        throw new ReadOnlyBufferException();
#end[rw]
    }

    public ByteBuffer put$Type$(int i, $type$ x) {
#if[rw]
        put$Type$(ix(checkIndex(i, $BYTES_PER_VALUE$)), x);
        return this;
#else[rw]
        throw new ReadOnlyBufferException();
#end[rw]
    }

    public $Type$Buffer as$Type$Buffer() {
        int off = this.position();
        int lim = this.limit();
        assert (off <= lim);
        int rem = (off <= lim ? lim - off : 0);

        int size = rem >> $LG_BYTES_PER_VALUE$;
        if (!unaligned && ((address + off) % $BYTES_PER_VALUE$ != 0)) {
            return (bigEndian
                    ? ($Type$Buffer)(new ByteBufferAs$Type$Buffer$RW$B(this,
                                                                       -1,
                                                                       0,
                                                                       size,
                                                                       size,
                                                                       address + off))
                    : ($Type$Buffer)(new ByteBufferAs$Type$Buffer$RW$L(this,
                                                                       -1,
                                                                       0,
                                                                       size,
                                                                       size,
                                                                       address + off)));
        } else {
            return (nativeByteOrder
                    ? ($Type$Buffer)(new Direct$Type$Buffer$RW$U(this,
                                                                 -1,
                                                                 0,
                                                                 size,
                                                                 size,
                                                                 off))
                    : ($Type$Buffer)(new Direct$Type$Buffer$RW$S(this,
                                                                 -1,
                                                                 0,
                                                                 size,
                                                                 size,
                                                                 off)));
        }
    }

#end

}