| /* |
| * 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; |
| |
| public interface StackIntrospection { |
| |
| /** |
| * Walks the current stack, providing {@link InspectedFrame}s to the visitor that can be used to |
| * inspect the stack frame's contents. Iteration continues as long as |
| * {@link InspectedFrameVisitor#visitFrame}, which is invoked for every {@link InspectedFrame}, |
| * returns {@code null}. A non-null return value from {@link InspectedFrameVisitor#visitFrame} |
| * indicates that frame iteration should stop. |
| * |
| * @param initialMethods if this is non-{@code null}, then the stack walk will start at the |
| * first frame whose method is one of these methods. |
| * @param matchingMethods if this is non-{@code null}, then only frames whose methods are in |
| * this array are visited |
| * @param initialSkip the number of matching methods to skip (including the initial method) |
| * @param visitor the visitor that is called for every matching method |
| * @return the last result returned by the visitor (which is non-null to indicate that iteration |
| * should stop), or null if the whole stack was iterated. |
| */ |
| <T> T iterateFrames(ResolvedJavaMethod[] initialMethods, ResolvedJavaMethod[] matchingMethods, int initialSkip, InspectedFrameVisitor<T> visitor); |
| } |