64 lines
2.3 KiB
Java
64 lines
2.3 KiB
Java
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/*
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* Copyright (c) 2019, 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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/**
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* Base class for memory access var handle implementations.
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*/
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abstract class VarHandleMemoryAddressBase extends VarHandle {
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/** endianness **/
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final boolean be;
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/** access size (in bytes, computed from var handle carrier type) **/
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final long length;
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/** access offset (in bytes); must be compatible with {@code alignmentMask} **/
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final long offset;
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/** alignment constraint (in bytes, expressed as a bit mask) **/
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final long alignmentMask;
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VarHandleMemoryAddressBase(VarForm form, boolean be, long length, long offset, long alignmentMask) {
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super(form);
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this.be = be;
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this.length = length;
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this.offset = offset;
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this.alignmentMask = alignmentMask;
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}
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static IllegalStateException newIllegalStateExceptionForMisalignedAccess(long address) {
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return new IllegalStateException("Misaligned access at address: " + address);
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}
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/**
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* Strides used for multi-dimensional access; each stride must be compatible with {@code alignmentMask}.
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*/
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abstract long[] strides();
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abstract Class<?> carrier();
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}
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