src/java.base/share/classes/java/lang/invoke/VarHandleByteArrayBase.java
author redestad
Thu, 19 Sep 2019 23:38:50 +0200
changeset 58238 3386b9a8ef4d
parent 47216 71c04702a3d5
permissions -rw-r--r--
8230768: Arrays of SoftReferences in MethodTypeForm should not be @Stable Reviewed-by: mchung
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/*
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 * Copyright (c) 2015, 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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package java.lang.invoke;
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import java.nio.Buffer;
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import java.nio.ByteBuffer;
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import static java.lang.invoke.MethodHandleStatics.UNSAFE;
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/**
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 * The base class for generated byte array and byte buffer view
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 * implementations
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 */
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abstract class VarHandleByteArrayBase {
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    // Buffer.address
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    static final long BUFFER_ADDRESS
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            = UNSAFE.objectFieldOffset(Buffer.class, "address");
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    // Buffer.limit
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    static final long BUFFER_LIMIT
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            = UNSAFE.objectFieldOffset(Buffer.class, "limit");
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    // ByteBuffer.hb
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    static final long BYTE_BUFFER_HB
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            = UNSAFE.objectFieldOffset(ByteBuffer.class, "hb");
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    // ByteBuffer.isReadOnly
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    static final long BYTE_BUFFER_IS_READ_ONLY
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            = UNSAFE.objectFieldOffset(ByteBuffer.class, "isReadOnly");
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    static final boolean BE = UNSAFE.isBigEndian();
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    static IllegalStateException newIllegalStateExceptionForMisalignedAccess(int index) {
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        return new IllegalStateException("Misaligned access at index: " + index);
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    }
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}