Mercurial > hg > graal-jvmci-8
view jvmci/jdk.vm.ci.hotspot/src/jdk/vm/ci/hotspot/HotSpotMetaspaceConstantImpl.java @ 22760:4cf1946f59fc
must not fold accesses to @Stable fields if -XX:-FoldStableValues (GRAAL-58)
author | Doug Simon <doug.simon@oracle.com> |
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date | Sat, 26 Dec 2015 15:00:55 +0100 |
parents | 1bbd4a7c274b |
children | f8178417d018 |
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/* * Copyright (c) 2014, 2015, 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. * * 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. */ package jdk.vm.ci.hotspot; import java.util.Objects; import jdk.vm.ci.meta.Constant; import jdk.vm.ci.meta.VMConstant; final class HotSpotMetaspaceConstantImpl implements HotSpotMetaspaceConstant, VMConstant, HotSpotProxified { static HotSpotMetaspaceConstantImpl forMetaspaceObject(MetaspaceWrapperObject metaspaceObject, boolean compressed) { return new HotSpotMetaspaceConstantImpl(metaspaceObject, compressed); } static MetaspaceWrapperObject getMetaspaceObject(Constant constant) { return ((HotSpotMetaspaceConstantImpl) constant).metaspaceObject; } private final MetaspaceWrapperObject metaspaceObject; private final boolean compressed; private HotSpotMetaspaceConstantImpl(MetaspaceWrapperObject metaspaceObject, boolean compressed) { this.metaspaceObject = metaspaceObject; this.compressed = compressed; } @Override public int hashCode() { return System.identityHashCode(metaspaceObject) ^ (compressed ? 1 : 2); } @Override public boolean equals(Object o) { if (o == this) { return true; } if (!(o instanceof HotSpotMetaspaceConstantImpl)) { return false; } HotSpotMetaspaceConstantImpl other = (HotSpotMetaspaceConstantImpl) o; return Objects.equals(this.metaspaceObject, other.metaspaceObject) && this.compressed == other.compressed; } @Override public String toValueString() { return String.format("meta{%s%s}", metaspaceObject, compressed ? ";compressed" : ""); } @Override public String toString() { return toValueString(); } public boolean isDefaultForKind() { return false; } public boolean isCompressed() { return compressed; } public Constant compress() { assert !isCompressed(); HotSpotMetaspaceConstantImpl res = HotSpotMetaspaceConstantImpl.forMetaspaceObject(metaspaceObject, true); assert res.isCompressed(); return res; } public Constant uncompress() { assert isCompressed(); HotSpotMetaspaceConstantImpl res = HotSpotMetaspaceConstantImpl.forMetaspaceObject(metaspaceObject, false); assert !res.isCompressed(); return res; } public HotSpotResolvedObjectType asResolvedJavaType() { if (metaspaceObject instanceof HotSpotResolvedObjectType) { return (HotSpotResolvedObjectType) metaspaceObject; } return null; } public HotSpotResolvedJavaMethod asResolvedJavaMethod() { if (metaspaceObject instanceof HotSpotResolvedJavaMethod) { return (HotSpotResolvedJavaMethod) metaspaceObject; } return null; } }