001/*
002 * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
003 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
004 *
005 * This code is free software; you can redistribute it and/or modify it
006 * under the terms of the GNU General Public License version 2 only, as
007 * published by the Free Software Foundation.
008 *
009 * This code is distributed in the hope that it will be useful, but WITHOUT
010 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
011 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
012 * version 2 for more details (a copy is included in the LICENSE file that
013 * accompanied this code).
014 *
015 * You should have received a copy of the GNU General Public License version
016 * 2 along with this work; if not, write to the Free Software Foundation,
017 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
018 *
019 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
020 * or visit www.oracle.com if you need additional information or have any
021 * questions.
022 */
023package jdk.internal.jvmci.hotspot;
024
025import java.util.*;
026
027import jdk.internal.jvmci.code.stack.*;
028import jdk.internal.jvmci.meta.*;
029
030public class HotSpotStackFrameReference implements InspectedFrame {
031
032    private CompilerToVM compilerToVM;
033
034    // information used to find the stack frame
035    private long stackPointer;
036    private int frameNumber;
037
038    // information about the stack frame's contents
039    private int bci;
040    private long metaspaceMethod;
041    private Object[] locals;
042    private boolean[] localIsVirtual;
043
044    public long getStackPointer() {
045        return stackPointer;
046    }
047
048    public int getFrameNumber() {
049        return frameNumber;
050    }
051
052    @Override
053    public Object getLocal(int index) {
054        return locals[index];
055    }
056
057    @Override
058    public boolean isVirtual(int index) {
059        return localIsVirtual == null ? false : localIsVirtual[index];
060    }
061
062    @Override
063    public void materializeVirtualObjects(boolean invalidateCode) {
064        compilerToVM.materializeVirtualObjects(this, invalidateCode);
065    }
066
067    @Override
068    public int getBytecodeIndex() {
069        return bci;
070    }
071
072    @Override
073    public ResolvedJavaMethod getMethod() {
074        return HotSpotResolvedJavaMethodImpl.fromMetaspace(metaspaceMethod);
075    }
076
077    @Override
078    public boolean isMethod(ResolvedJavaMethod method) {
079        return metaspaceMethod == ((HotSpotResolvedJavaMethodImpl) method).getMetaspaceMethod();
080    }
081
082    @Override
083    public boolean hasVirtualObjects() {
084        return localIsVirtual != null;
085    }
086
087    @Override
088    public String toString() {
089        return "HotSpotStackFrameReference [stackPointer=" + stackPointer + ", frameNumber=" + frameNumber + ", bci=" + bci + ", method=" + getMethod() + ", locals=" + Arrays.toString(locals) +
090                        ", localIsVirtual=" + Arrays.toString(localIsVirtual) + "]";
091    }
092}