73 lines
2.5 KiB
Java
73 lines
2.5 KiB
Java
/*
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* Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/*
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* @test
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* @bug 8157892 8157977
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* @summary Verify file name, line number and bci of native methods
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* @run main NativeMethod
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*/
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import java.lang.StackWalker.Option;
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import java.lang.StackWalker.StackFrame;
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import java.lang.reflect.Method;
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import java.util.List;
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import java.util.stream.Collectors;
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public class NativeMethod {
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public static void main(String... args) throws Exception {
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new NativeMethod().test();
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}
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private final StackWalker walker;
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NativeMethod() {
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this.walker = StackWalker.getInstance(Option.SHOW_REFLECT_FRAMES);
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}
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void test() throws Exception {
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// invoke via reflection that includes native methods
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Method m = NativeMethod.class.getDeclaredMethod("walk");
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m.invoke(this);
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}
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void walk() {
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List<StackFrame> nativeFrames = walker.walk(s ->
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s.filter(StackFrame::isNativeMethod)
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.collect(Collectors.toList())
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);
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assertTrue(nativeFrames.size() > 0, "native frame not found");
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for (StackFrame f : nativeFrames) {
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assertTrue(f.getFileName() != null, "source file expected to be found");
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assertTrue(f.getLineNumber() < 0, "line number expected to be unavailable");
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assertTrue(f.getByteCodeIndex() < 0, "bci expected to be unavailable");
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}
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}
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private static void assertTrue(boolean value, String msg) {
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if (value != true)
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throw new AssertionError(msg);
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}
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}
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