Mercurial > hg > truffle
view agent/src/share/classes/sun/jvm/hotspot/debugger/cdbg/basic/BasicType.java @ 113:ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
Summary: Compressed oops in instances, arrays, and headers. Code contributors are coleenp, phh, never, swamyv
Reviewed-by: jmasa, kamg, acorn, tbell, kvn, rasbold
author | coleenp |
---|---|
date | Sun, 13 Apr 2008 17:43:42 -0400 |
parents | a61af66fc99e |
children | c18cbe5936b8 |
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/* * Copyright 2001 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, * CA 95054 USA or visit www.sun.com if you need additional information or * have any questions. * */ package sun.jvm.hotspot.debugger.cdbg.basic; import java.util.*; import sun.jvm.hotspot.debugger.*; import sun.jvm.hotspot.debugger.cdbg.*; public abstract class BasicType implements Type, CVAttributes { private String name; private int size; private int cvAttributes; // Types keep a list of const/volatile qualified variants of themselves private List cvVariants; protected BasicType(String name, int size) { this(name, size, 0); } protected BasicType(String name, int size, int cvAttributes) { this.name = name; this.size = size; this.cvAttributes = cvAttributes; } public String getName() { return name; } /** For use during resolution only */ protected void setName(String name) { this.name = name; } public int getSize() { return size; } public BitType asBit() { return null; } public IntType asInt() { return null; } public EnumType asEnum() { return null; } public FloatType asFloat() { return null; } public DoubleType asDouble() { return null; } public PointerType asPointer() { return null; } public ArrayType asArray() { return null; } public RefType asRef() { return null; } public CompoundType asCompound() { return null; } public FunctionType asFunction() { return null; } public MemberFunctionType asMemberFunction() { return null; } public VoidType asVoid() { return null; } public boolean isBit() { return (asBit() != null); } public boolean isInt() { return (asInt() != null); } public boolean isEnum() { return (asEnum() != null); } public boolean isFloat() { return (asFloat() != null); } public boolean isDouble() { return (asDouble() != null); } public boolean isPointer() { return (asPointer() != null); } public boolean isArray() { return (asArray() != null); } public boolean isRef() { return (asRef() != null); } public boolean isCompound() { return (asCompound() != null); } public boolean isFunction() { return (asFunction() != null); } public boolean isMemberFunction() { return (asMemberFunction() != null); } public boolean isVoid() { return (asVoid() != null); } public boolean isConst() { return ((cvAttributes & CONST) != 0); } public boolean isVolatile() { return ((cvAttributes & VOLATILE) != 0); } Type resolveTypes(BasicCDebugInfoDataBase db, ResolveListener listener) { if (cvVariants != null) { for (ListIterator iter = cvVariants.listIterator(); iter.hasNext(); ) { iter.set(db.resolveType(this, (BasicType) iter.next(), listener, "resolving const/var variants")); } } return this; } public boolean isLazy() { return false; } public void iterateObject(Address a, ObjectVisitor v) { iterateObject(a, v, null); } public abstract void iterateObject(Address a, ObjectVisitor v, FieldIdentifier f); public Type getCVVariant(int cvAttributes) { Type t = findCVVariant(cvAttributes); if (t != null) return t; t = createCVVariant(cvAttributes); addCVVariant(t); return t; } public String toString() { return getName(); } private int getCVAttributes() { return cvAttributes; } protected abstract Type createCVVariant(int cvAttributes); protected Type findCVVariant(int cvAttributes) { if (cvVariants != null) { for (Iterator iter = cvVariants.iterator(); iter.hasNext(); ) { BasicType t = (BasicType) iter.next(); if (t.getCVAttributes() == cvAttributes) return t; } } return null; } protected void addCVVariant(Type t) { if (cvVariants == null) { cvVariants = new ArrayList(); } cvVariants.add(t); } public abstract void visit(TypeVisitor v); }