/*
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * 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.
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package sun.jvm.hotspot.code;

import java.io.*;
import java.util.*;

import sun.jvm.hotspot.debugger.*;
import sun.jvm.hotspot.utilities.*;

An ObjectValue describes an object eliminated by escape analysis.
/** An ObjectValue describes an object eliminated by escape analysis. */
public class ObjectValue extends ScopeValue { private int id; private ScopeValue klass; private List fieldsValue; // ArrayList<ScopeValue> // Field "boolean visited" is not implemented here since // it is used only a during debug info creation. public ObjectValue(int id) { this.id = id; klass = null; fieldsValue = new ArrayList(); } public boolean isObject() { return true; } public int id() { return id; } public ScopeValue getKlass() { return klass; } public List getFieldsValue() { return fieldsValue; } public ScopeValue getFieldAt(int i) { return (ScopeValue)fieldsValue.get(i); } public int fieldsSize() { return fieldsValue.size(); } // Field "value" is always NULL here since it is used // only during deoptimization of a compiled frame // pointing to reallocated object. public OopHandle getValue() { return null; }
Serialization of debugging information
/** Serialization of debugging information */
void readObject(DebugInfoReadStream stream) { klass = readFrom(stream); Assert.that(klass.isConstantOop(), "should be constant klass oop"); int length = stream.readInt(); for (int i = 0; i < length; i++) { ScopeValue val = readFrom(stream); fieldsValue.add(val); } } // Printing public void print() { printOn(System.out); } public void printOn(PrintStream tty) { tty.print("scalarObj[" + id + "]"); } void printFieldsOn(PrintStream tty) { if (fieldsValue.size() > 0) { ((ScopeValue)fieldsValue.get(0)).printOn(tty); } for (int i = 1; i < fieldsValue.size(); i++) { tty.print(", "); ((ScopeValue)fieldsValue.get(i)).printOn(tty); } } };