| /* |
| * Copyright (c) 2016, 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. |
| */ |
| |
| /* |
| * @test |
| * @bug 8157892 8157977 |
| * @summary Verify file name, line number and bci of native methods |
| * @run main NativeMethod |
| */ |
| |
| import java.lang.StackWalker.Option; |
| import java.lang.StackWalker.StackFrame; |
| import java.lang.reflect.Method; |
| import java.util.List; |
| import java.util.stream.Collectors; |
| |
| public class NativeMethod { |
| public static void main(String... args) throws Exception { |
| new NativeMethod().test(); |
| } |
| |
| private final StackWalker walker; |
| NativeMethod() { |
| this.walker = StackWalker.getInstance(Option.SHOW_REFLECT_FRAMES); |
| } |
| |
| void test() throws Exception { |
| // invoke via reflection that includes native methods |
| Method m = NativeMethod.class.getDeclaredMethod("walk"); |
| m.invoke(this); |
| } |
| |
| void walk() { |
| List<StackFrame> nativeFrames = walker.walk(s -> |
| s.filter(StackFrame::isNativeMethod) |
| .collect(Collectors.toList()) |
| ); |
| |
| assertTrue(nativeFrames.size() > 0, "native frame not found"); |
| for (StackFrame f : nativeFrames) { |
| assertTrue(f.getFileName() != null, "source file expected to be found"); |
| assertTrue(f.getLineNumber() < 0, "line number expected to be unavailable"); |
| assertTrue(f.getByteCodeIndex() < 0, "bci expected to be unavailable"); |
| } |
| |
| } |
| |
| private static void assertTrue(boolean value, String msg) { |
| if (value != true) |
| throw new AssertionError(msg); |
| } |
| } |