1 /* 2 * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 package jdk.vm.ci.code.stack; 24 25 import jdk.vm.ci.meta.ResolvedJavaMethod; 26 27 public interface StackIntrospection { 28 29 /** 30 * Accesses the current stack, providing {@link InspectedFrame}s to the visitor that can be used 31 * to inspect the stack frames' contents. Iteration continues as long as 32 * {@link InspectedFrameVisitor#visitFrame}, which is invoked for every {@link InspectedFrame}, 33 * returns null. Any non-null result of the visitor indicates that frame iteration should stop. 34 * 35 * @param initialMethods if this is non-{@code null}, then the stack trace will start at these 36 * methods 37 * @param matchingMethods if this is non-{@code null}, then only matching stack frames are 38 * returned 39 * @param initialSkip the number of matching methods to skip (including the initial method) 40 * @param visitor the visitor that is called for every matching method 41 * @return the last result returned by the visitor (which is non-null to indicate that iteration 42 * should stop), or null if the whole stack was iterated. 43 */ 44 <T> T iterateFrames(ResolvedJavaMethod[] initialMethods, ResolvedJavaMethod[] matchingMethods, int initialSkip, InspectedFrameVisitor<T> visitor); 45 }