Mercurial > hg > graal-jvmci-8
view jvmci/jdk.vm.ci.hotspot/src/jdk/vm/ci/hotspot/HotSpotObjectConstantImpl.java @ 23387:a920338dd4d4
remove JVMCIError and UnsafeUtil classes (JDK-8156759)
author | Doug Simon <doug.simon@oracle.com> |
---|---|
date | Wed, 11 May 2016 15:54:36 +0200 |
parents | f102ee538647 |
children | 1d4ce2d19e52 |
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/* * Copyright (c) 2009, 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 static jdk.vm.ci.hotspot.HotSpotResolvedObjectTypeImpl.fromObjectClass; import java.lang.invoke.CallSite; import java.lang.invoke.ConstantCallSite; import java.lang.invoke.MethodHandle; import jdk.vm.ci.inittimer.SuppressFBWarnings; import jdk.vm.ci.meta.Assumptions; import jdk.vm.ci.meta.Constant; import jdk.vm.ci.meta.JavaConstant; import jdk.vm.ci.meta.JavaKind; import jdk.vm.ci.meta.ResolvedJavaType; /** * Represents a constant non-{@code null} object reference, within the compiler and across the * compiler/runtime interface. */ final class HotSpotObjectConstantImpl implements HotSpotObjectConstant, HotSpotProxified { static JavaConstant forObject(Object object) { return forObject(object, false); } static JavaConstant forObject(Object object, boolean compressed) { if (object == null) { return compressed ? HotSpotCompressedNullConstant.COMPRESSED_NULL : JavaConstant.NULL_POINTER; } else { return new HotSpotObjectConstantImpl(object, compressed); } } public static JavaConstant forBoxedValue(JavaKind kind, Object value) { if (kind == JavaKind.Object) { return HotSpotObjectConstantImpl.forObject(value); } else { return JavaConstant.forBoxedPrimitive(value); } } static Object asBoxedValue(Constant constant) { if (JavaConstant.isNull(constant)) { return null; } else if (constant instanceof HotSpotObjectConstantImpl) { return ((HotSpotObjectConstantImpl) constant).object; } else { return ((JavaConstant) constant).asBoxedPrimitive(); } } private final Object object; private final boolean compressed; private HotSpotObjectConstantImpl(Object object, boolean compressed) { this.object = object; this.compressed = compressed; assert object != null; } @Override public JavaKind getJavaKind() { return JavaKind.Object; } /** * Package-private accessor for the object represented by this constant. */ Object object() { return object; } public boolean isCompressed() { return compressed; } public JavaConstant compress() { assert !compressed; return new HotSpotObjectConstantImpl(object, true); } public JavaConstant uncompress() { assert compressed; return new HotSpotObjectConstantImpl(object, false); } public HotSpotResolvedObjectType getType() { return fromObjectClass(object.getClass()); } public JavaConstant getClassLoader() { if (object instanceof Class) { /* * This is an intrinsic for getClassLoader0, which occurs after any security checks. We * can't call that directly so just call getClassLoader. */ return HotSpotObjectConstantImpl.forObject(((Class<?>) object).getClassLoader()); } return null; } public int getIdentityHashCode() { return System.identityHashCode(object); } public JavaConstant getComponentType() { if (object instanceof Class) { return HotSpotObjectConstantImpl.forObject(((Class<?>) object).getComponentType()); } return null; } public JavaConstant getSuperclass() { if (object instanceof Class) { return HotSpotObjectConstantImpl.forObject(((Class<?>) object).getSuperclass()); } return null; } public JavaConstant getCallSiteTarget(Assumptions assumptions) { if (object instanceof CallSite) { CallSite callSite = (CallSite) object; MethodHandle target = callSite.getTarget(); if (!(callSite instanceof ConstantCallSite)) { if (assumptions == null) { return null; } assumptions.record(new Assumptions.CallSiteTargetValue(callSite, target)); } return HotSpotObjectConstantImpl.forObject(target); } return null; } @SuppressFBWarnings(value = "ES_COMPARING_STRINGS_WITH_EQ", justification = "reference equality is what we want") public boolean isInternedString() { if (object instanceof String) { String s = (String) object; return s.intern() == s; } return false; } public <T> T asObject(Class<T> type) { if (type.isInstance(object)) { return type.cast(object); } return null; } public Object asObject(ResolvedJavaType type) { if (type.isInstance(this)) { return object; } return null; } @Override public boolean isNull() { return false; } @Override public boolean isDefaultForKind() { return false; } @Override public Object asBoxedPrimitive() { throw new IllegalArgumentException(); } @Override public int asInt() { throw new IllegalArgumentException(); } @Override public boolean asBoolean() { throw new IllegalArgumentException(); } @Override public long asLong() { throw new IllegalArgumentException(); } @Override public float asFloat() { throw new IllegalArgumentException(); } @Override public double asDouble() { throw new IllegalArgumentException(); } @Override public int hashCode() { return System.identityHashCode(object); } @Override public boolean equals(Object o) { if (o == this) { return true; } else if (o instanceof HotSpotObjectConstantImpl) { HotSpotObjectConstantImpl other = (HotSpotObjectConstantImpl) o; return object == other.object && compressed == other.compressed; } return false; } @Override public String toValueString() { if (object instanceof String) { return "\"" + (String) object + "\""; } else { return JavaKind.Object.format(object); } } @Override public String toString() { return (compressed ? "NarrowOop" : getJavaKind().getJavaName()) + "[" + JavaKind.Object.format(object) + "]"; } }