| /* |
| * Copyright (c) 2014, 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.code.stack; |
| |
| import jdk.vm.ci.meta.ResolvedJavaMethod; |
| |
| /** |
| * Access to the object variables in a stack frame. |
| */ |
| public interface InspectedFrame { |
| |
| /** |
| * Returns the value of the object local at {@code index}. This value is a copy iff |
| * {@link #isVirtual(int)} is true. |
| */ |
| Object getLocal(int index); |
| |
| /** |
| * Returns whether the local at {@code index} is a virtual object, and therefore the object |
| * returned by {@link #getLocal(int)} is a copy. |
| */ |
| boolean isVirtual(int index); |
| |
| /** |
| * Returns true if the stack frame is a compiled stack frame and there are virtual objects |
| * anywhere in the current state of the compiled method. This can return true even if |
| * {@link #isVirtual(int)} return false for all locals. |
| */ |
| boolean hasVirtualObjects(); |
| |
| /** |
| * This method will materialize all virtual objects, deoptimize the stack frame and make sure |
| * that subsequent execution of the deoptimized frame uses the materialized values. |
| */ |
| void materializeVirtualObjects(boolean invalidateCode); |
| |
| /** |
| * @return the current bytecode index |
| */ |
| int getBytecodeIndex(); |
| |
| /** |
| * @return the current method |
| */ |
| ResolvedJavaMethod getMethod(); |
| |
| /** |
| * Checks if the current method is equal to the given method. This is semantically equivalent to |
| * {@code method.equals(getMethod())}, but can be implemented more efficiently. |
| */ |
| boolean isMethod(ResolvedJavaMethod method); |
| } |